electric vehicles – RoboticsBiz https://roboticsbiz.com Everything about robotics and AI Wed, 20 Mar 2024 16:52:23 +0000 en-US hourly 1 https://wordpress.org/?v=6.7.2 How to choose an ideal American car for your lifestyle https://roboticsbiz.com/how-to-choose-an-ideal-american-car-for-your-lifestyle/ Thu, 11 Jan 2024 16:10:12 +0000 https://roboticsbiz.com/?p=11354 Choosing the right car can be a difficult task. There are countless options available, and each one is designed to meet your specific needs. However, not all of these cars are created equal. Some may not even be suitable for your lifestyle at all! To help you avoid this pitfall, we’ve compiled a list of […]

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Choosing the right car can be a difficult task. There are countless options available, and each one is designed to meet your specific needs. However, not all of these cars are created equal. Some may not even be suitable for your lifestyle at all! To help you avoid this pitfall, we’ve compiled a list of tips that will help narrow down your search and find the ideal American-made car for your lifestyle:

Identifying Your Lifestyle Needs

To help you identify the right car for your lifestyle, we’ve compiled a list of questions to ask yourself, including considerations for Ford prices at Copart.

  • How much do I need to carry? If you have a lot of stuff and/or kids, you’ll want a larger vehicle with lots of storage space.
  • What kind of driving do I do most often? If most of your driving is on highways or other high-speed roads, comfort may be more important than performance (and vice versa).
  • How much am I willing to spend on gas? If money isn’t an issue for you, then go ahead and get whatever car appeals most strongly to you, but if saving money matters more than anything else, consider buying used cars instead of new ones whenever possible! This will save thousands over time because newer models cost more than their older counterparts due to inflationary pressures caused by increased demand.”

Budget Considerations

The first thing to consider when choosing an American car is how much you can afford to spend on it. It’s important to consider not only the initial cost of the vehicle itself but also recurring expenses like gas and maintenance. You should also consider how much insurance will cost based on your driving history and credit score and whether or not those rates will be affected by where you live (insurance premiums vary widely across states).

Fuel Efficiency and Environmental Impact

Fuel efficiency is an important factor to consider when buying a car, especially if you’re looking for something that will help you save money on fuel costs. The EPA estimates that the average American drives about 12,000 miles per year, which equates to about 20 gallons of gasoline (or 1/4th of a tank) per week. This number could be much higher if you have a long commute or drive your car frequently for work or school activities.

Beyond assessing qualities such as fuel efficiency and environmental impact, understanding the value of your current vehicle can influence your decision. If you’re considering trading in or selling your used car, you might want to schedule a vehicle appraisal at EchoPark Houston to ensure you’re getting a fair deal before making any final choices.

It’s also important to consider environmental impact when choosing your next vehicle. The average passenger vehicle emits around 4 tonnes of CO2 annually. While some cars are better than others at reducing this number (hybrids tend to pollute less), many other factors are involved in determining how much carbon dioxide any given model will produce over its lifetime and how efficient its engine is at converting fossil fuels into usable energy.

Test Driving and Research

Once you know what type of car you want and the price range, it’s time to start test driving. Test driving a car is an important part of the process because it allows you to experience the vehicle firsthand. It also allows you to check out how well it handles on the road, whether or not there are any mechanical issues with it, and if you feel comfortable driving it. Additionally, consider integrating Ford VIN decoding into this process to gather more specific information about the vehicle’s history and specifications.

Test driving isn’t limited to just going for an initial spin around town; take your potential purchase on long-distance trips so that everything is noticed during those drives (like poor gas mileage). While test driving is necessary before making any final decisions about buying a car, there are other ways research can help, too!

You should also research online reviews from other drivers who own cars similar in style and size as yours; this will give insight into common issues people encounter with these types of vehicles over time. Researching reliability ratings is another great way to ensure no major problems are reported about this particular make/model by using sites like Consumer Reports’ reliability rankings tool. This site provides detailed information about which makes/models perform best overall based on their testing methods and user feedback submitted through surveys over time – so keep checking back frequently until one sticks out above all others!

Customer Reviews and Ratings

Before shopping, checking online reviews and ratings is a good idea. You can find out which cars have high customer satisfaction ratings, are known for reliability and dependability, or have a history of low maintenance costs. If you’re concerned about the environment, you’ll also want to look at the vehicle’s safety, fuel efficiency, and emissions ratings.

Conclusion

The American car market is vast and varied, but with a little research and test driving, you can find the right vehicle for your lifestyle. We hope these tips have been helpful as you start your search!

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Electric vehicle (EV) charging – Key emerging trends https://roboticsbiz.com/electric-vehicle-ev-charging-key-emerging-trends/ https://roboticsbiz.com/electric-vehicle-ev-charging-key-emerging-trends/#respond Tue, 25 Jan 2022 07:15:56 +0000 https://roboticsbiz.com/?p=7011 Electric vehicles (EVs) represent a growing opportunity to capture new sources of demand flexibility while increasing revenue from a customer class that will grow significantly over the next decade. Unlike conventional vehicles that cannot be refueled without dedicated fueling infrastructure at designated locations, one of the positive aspects of electric vehicles is that these can […]

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Electric vehicles (EVs) represent a growing opportunity to capture new sources of demand flexibility while increasing revenue from a customer class that will grow significantly over the next decade.

Unlike conventional vehicles that cannot be refueled without dedicated fueling infrastructure at designated locations, one of the positive aspects of electric vehicles is that these can be charged at many places like homes, workplaces, malls, parking spots, etc. However, proper and suitable charging infrastructure will need to be in place. A widespread and easily accessible charging network will be crucial for the mass adoption of electric vehicles.

However, proper and suitable charging infrastructure will need to be in place. A widespread and easily accessible charging network will be crucial for the mass adoption of electric vehicles.

Developing a robust charging infrastructure network is widely considered a key requirement for a large-scale transition to electromobility. Such infrastructure would provide more charging options for drivers and promote awareness and range confidence for prospective electric vehicle owners.

“The challenge, alongside making the costs of these vehicles more economic, is how to implement charging points in a way that’s not too intrusive and easily accessible,” comments James Durr of auctioneer company House Property Solvers. This post explores some of the key emerging electric vehicle charging infrastructure trends.

1. Induction charging/wireless charging

Many manufacturers are currently proposing local communities and businesses to switch to a non-contact electrical charging system for electric vehicles rather than cable and sockets. The ground-based system can be incorporated into the asphalt of a road or attached to off-street parking spaces on a large scale. A vehicle parked above the system’s battery will be charged wirelessly via induction. Inductive charging, which involves electricity being transferred through an air gap between two magnetic coils, is at the heart of the technology.

It enables the electrical energy transfer from the grid to a vehicle without wires. Magnetic resonance coupling occurs when two copper coils tuned to the same frequency, one embedded in the ground and the other mounted beneath the vehicle, transfer energy. The setup is similar to a transformer, with the primary in the ground and the secondary in the vehicle. It is not a standalone charger. It simply takes the place of a direct grid connection. A normal charger, such as a Level 1 or Level 2 charger, receives the AC power picked up by the secondary coil.

Benefits of wireless charging

  • Full autonomy: The application of autonomous vehicles is yet to be fully realized because they are still being developed. However, if there is no need to stop charging autonomous vehicles, they can move indefinitely – or until repairs are needed. It may increase the scope and efficiency with which they can be utilized.
  • Charging station not required: There is no need to insert a cable with wireless charging, which means it’s a more user-friendly approach. You can go about your day without even thinking about charging the car, and it will automatically take care of itself
  • Smaller battery units: The increase in charging points means the size of the battery pack can be reduced. It reduces the cost and weight of the vehicle

Drawbacks of wireless charging

  • Energy loss: There is the potential for 90-93% energy efficiency, but there will still be energy loss during the transfer. Over a larger scale, this leads to a lot of wasted energy that increases the total amount of electricity required to run the vehicles
  • Building the infrastructure: Implementing the infrastructure may not make economic sense when considering wireless charging to roadways. To start, it might be restricted to densely populated urban areas, which will limit the user to predefined locations
  • Health effects: The magnetic fields created may be harmful, or they may not – more investigation is required to ensure that long-term exposure to weak magnetic fields isn’t a problem.

2. Battery swapping

The government has given significant consideration to battery swapping to mitigate the issues of (a) cost of ownership and (b) range anxiety faced with electric vehicles. A Battery Swapping Infrastructure enables the replacement of discharged batteries in vehicles with fully charged batteries from a shelf. Battery swapping can reduce the time it takes to recharge an electric vehicle’s battery, which can take anywhere from 5 to 15 minutes compared to the up to eight hours it takes to charge a battery.

Because vehicles can be sold with a battery available on lease, this strategy of providing a widespread battery swapping model is expected to lower the upfront cost of EVs. Electric vehicle batteries must be easily replaceable and accessible to all to fully realize BSS’s potential.

One of the most important requirements would be the consistent standardization of batteries across various electric vehicles. As a result, the best EV model will be when the vehicle owner leases batteries from the company. The most notable benefit of this approach is that the price of an electric vehicle will drop dramatically as the cost of the battery is deducted from the total vehicle cost.

A battery-swapping station is where an electric car can drive over, and an automatic or a manual system can open up the bottom of the electric car, remove the exhausted battery, and insert a new fully charged battery. You can picture it as robot mechanics giving an electric car a fresh battery

The adoption of EVs is hindered due to the high cost of ownership. The cost can be reduced by taking out of the battery from the equation. A third party will have ownership of the battery and will be liable for replacing the drained batteries with fresh, charged, and standard ones.

Battery Swapping Stations is a battery aggregator with enough clout to compete in the electrical energy and reserve markets. The BSS can maximize its profits by providing services to the system, such as voltage support, regulation reserves, or energy arbitrage. However, the battery swapping model has not been fully implemented globally due to technological and commercial dynamics. Standardization, commercial viability, and reliability are well-known issues. This system has both benefits and drawbacks.

3. Vehicle to Grid (V2G) Energy Transfer

V2G facility envisions electricity-generating utilities to level demand on their generating capacity by drawing energy from the batteries of EVs connected to the grid during peak demand hours during the day and returning it to the vehicles during low-demand hours at night. To feed the energy back into the grid, charging stations would need to be capable of bi-directional power transfer, incorporating inverters with precisely controlled voltage and frequency output.

Vehicle-to-grid (V2G) refers to a system in which plug-in electric vehicles, such as electric cars (BEV) and plug-in hybrids (PHEV), and the power grid exchange reciprocal, bi-directional electrical energy. It is done through selling demand response services by throttling the charge rate or returning electricity to the grid. Other types of V2G technology consist of load-sharing sources with the power grid. It includes subsets of V2G such as vehicle-to-home (V2H) and vehicle-to-building (V2B), which draw power directly from the EV rather than through the power grid.

Benefits of V2G

  • Financial Rewards: The energy stored in the vehicle can be used to avoid peak tariffs and additional strain on the power grid during times of high demand. V2G can also reduce monthly bills by maximizing the value of energy generated from home renewables (such as solar panels). All of these cost savings are on top of the savings that come with owning an electric vehicle in the first place.
  • Home Energy Storage: A 4kWh electric battery can meet one-third of a typical home’s energy requirements. Home battery energy storage products are currently being developed to scale up dispersed energy storage capacity. Homeowners can save thousands of dollars each year by maximizing resource use through a fully connected home energy network. Additionally, when people are at work or running errands, energy can be saved from the power grid and used to power other buildings as part of the new grid infrastructure.
  • Green Impact: V2G aims to increase the number of electric vehicles on the road to contribute to the power grid and avoid power outages. It has a hugely beneficial effect on the environment and air quality. Not all vehicle owners are required to invest in costly technology.

Drawbacks of V2G

  • The main challenge V2G faces is that as batteries are used more frequently, they lose their ability to store energy. However, as stronger lithium-ion batteries become more affordable to produce (and more disposable), this issue becomes less of a concern.
  • Business cases for V2G still need to be made in various local economies and governments. V2G is fairly new, but each year more car companies are jumping on board to harness the potential of the technology. This type of hardware helps balance supply and demand when used in addition to smart chargers.

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What is the cost to install a fast charging station for EVs? https://roboticsbiz.com/what-is-the-cost-to-install-a-fast-charging-station-for-evs/ https://roboticsbiz.com/what-is-the-cost-to-install-a-fast-charging-station-for-evs/#respond Sat, 18 Dec 2021 16:36:02 +0000 https://roboticsbiz.com/?p=6780 Fast-charging networks for electric vehicles (EVs) are rapidly developing worldwide. As the market develops, many lessons are learned from studies and past deployments that provide guidance for the future. However, many gaps in knowledge show the need for continued research as charging speed increases, range increases, and the market broadens to include new users with […]

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Fast-charging networks for electric vehicles (EVs) are rapidly developing worldwide. As the market develops, many lessons are learned from studies and past deployments that provide guidance for the future.

However, many gaps in knowledge show the need for continued research as charging speed increases, range increases, and the market broadens to include new users with different driving needs and uncertain access to charging options.

Fast chargers for electric vehicles typically necessitate extensive site preparation and electrical infrastructure. As a result, fast-charging hardware accounts for only a portion of total costs, and the total cost of installing fast-charging stations varies significantly depending on the location. Due to the inherently local nature of these differences, exact labor costs and infrastructure requirements, as well as hardware and materials, must be assessed on a site-by-site basis.

Despite these differences, we present some estimates in terms of dollars per charger based on several scenarios and sites considered for fast-charging stations in Ottawa, Ontario. Estimates are shown for charging stations with four different charging speeds (50 kW, 100 kW, 150 kW, and 400 kW) and for installing four or eight stations per site to give an idea of future impacts.

Transformer upgrades, grid upgrades, and site preparation costs can range from less than $5,000 to more than $125,000 per charger. These costs do not, however, include the cost of the chargers.

Several conclusions can be drawn from these figures and data that may be useful in future deployments. First, because the increased electrical infrastructure was amortized over more stations, installing eight stations per location resulted in lower per-station costs than installing only four stations. Second, cost increases from 50 kW to 150 kW were relatively minor in all cases—less than $3,000 per station—but the jump from 150 kW to 400 kW resulted in a significant cost increase in some cases. This was due to the need to upgrade the distribution grid at some locations with new capacity and switching infrastructure and an expense triggered only by the highest-power stations. Although this varies by location, this experience shows that higher power comes with a higher risk of costly (and sometimes unpredictable) upgrades. Despite this, some locations were relatively unaffected by the increased power.

Estimates for these locations in Ottawa are similar to other deployments’ estimates. The EV Project collaborated on the first large-scale deployment and cost analysis of fast chargers in the United States, with 69 50 kW chargers installed and costs analyzed in 2015. According to the survey, installation costs ranged from $4,000 to $51,000. These were 50 kW chargers that were typically installed as single chargers rather than as part of plazas because they could often be accommodated on existing service.

The EV Project’s rural sites were the most likely to require new service upgrades, with costs averaging around $40,000. In the United Kingdom, utility upgrade costs for 50 kW chargers at highway stations ranged from $1,500 to $30,000. In contrast, Rapid Charge Network stations typically cost between $21,200 and $28,500 to install, with grid connections accounting for about a quarter of the total. Because labor, construction, and utility components drive installation costs, they are unlikely to decrease significantly in the future.

Hardware costs, which were not factored into previous cost estimates, rise as the power and complexity of the system grow. According to the EV Project, hardware costs ranged from $10,000 to $40,000 and were based on charging power, the ability to charge multiple cars without power-sharing, and network connections. The 25 kW Chargepoint Express 100 with CCS or CHAdeMO is currently available for $12,500, and the 50 kW Chargepoint Express 200 with CCS and CHAdeMO is currently available for $35,800. Nissan charges $15,500 for its 44 kW CHAdeMO unit. Hardware purchase costs for a dual-standard 50 kW station on the UK rapid-charge network averaged around $28,500.

Porsche has estimated that the hardware and installation of a pilot site in Atlanta with six 350 kW stations will cost $1 million. It’s still unclear whether this cost will be the same for large-scale deployments. In China, the total cost of a fast-charging plaza with ten 140 kW chargers is estimated to be 4.1 million yuan ($642,367). The transformer power is comparable to the Porsche site, but the total costs are lower. As new technology and economies of scale emerge, station costs are expected to decrease to some extent.

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Battery fast charging in EVs – Key challenges to overcome https://roboticsbiz.com/battery-fast-charging-in-evs-key-challenges-to-overcome/ https://roboticsbiz.com/battery-fast-charging-in-evs-key-challenges-to-overcome/#respond Thu, 16 Dec 2021 10:29:29 +0000 https://roboticsbiz.com/?p=6773 Fully battery-powered electric vehicles (EVs) are the most popular green vehicles worldwide. Relatively long charging time is arguably one of the most difficult and limiting parameters for consumers to accept and for researchers to meet among the factors preventing widespread adoption of these EVs. In comparison to the quick refueling time of internal combustion engine […]

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Fully battery-powered electric vehicles (EVs) are the most popular green vehicles worldwide. Relatively long charging time is arguably one of the most difficult and limiting parameters for consumers to accept and for researchers to meet among the factors preventing widespread adoption of these EVs.

In comparison to the quick refueling time of internal combustion engine vehicles, the current fastest recharging time for an 80 percent state of charge can take up to 30 minutes (SOC). Extreme fast charging (10 minutes to reach 80% state of charge) has been identified as one of the most important directions for the advancement of electric vehicles in the marketplace and, as a result, in the field of battery science.

The following are some of the current technical issues with fast charging in batteries: (1) cathode particle cracking, (2) low active material utilization, (3) electrolyte-electrode side reactions, and (4) Li plating at the anode. These issues are exacerbated by (5) electrode variability, and they are nearly all caused by the cell’s insufficient mass transport properties.

1. Cracking of cathode material

LIB cathode materials are typically agglomerated primary particles that clump together to form secondary particles. The secondary particles have been known to crack even at low cycling currents. Since the primary particles are not arranged in any particular order in the secondary particles, intragranular cracks are formed due to nonisotropic lattice strains.

The volume changes experienced by the cathode particles are amplified at higher Li insertion rates, increasing heterogeneity and stress throughout the battery material compared to slower rates. The Li-ion diffusion-induced stress is amplified at higher currents, such as in XFC conditions. The SOC of surface cathode primary particles is higher than that of inner primary particles. Cracking the cathode material could reduce the number of Li storage sites available while increasing the surface area available for electrolyte decomposition.

2. Low Active Material Utilization

The observed increases in cell voltages at higher charging rates are primarily due to changes in the system’s thermodynamics and kinetics. Concentration and Li-ion transport cause these changes. The concentration gradient generated in the cell at both the cathode and anode is extremely high due to mass transfer limitations. Suppose the electrolyte Li-ion transport is the limiting step. In that case, a higher current will generate more Li-ions and, as a result, a higher Li-ion concentration at the cathode’s surface than low current charging. On the other hand, the li-ion concentration at the graphite surface will be lower.

According to the Butler-Volmer equation, the overpotential is inversely proportional to the concentration of the reduction reaction reactants at a given current density. Because of the lower Li-ion concentration, the rate of the reduction reaction of Li-ion intercalation into the graphite anode is slowed, increasing the overpotential. Simultaneously, the increased/decreased Li-ion concentrations at the cathode/anode have a thermodynamic effect. On average, increasing the Li-ion concentration at the cathode will increase the oxidation potential required to extract Li from the cathode material. The lower Li-ion concentration at the anode’s surface will push the anode down to a more reductive potential. The polarization experienced by both the anode and cathode increases the overall cell voltage, causing it to reach its cut-off voltage prematurely, among other sources of overpotential (ohmic resistance, charge neutrality, etc.). As a result, low material utilization and energy efficiency have been reported.

3. Electrolyte-Electrode Side Reaction

To prevent continuous electrolyte/electrode side reactions, the cathode and anode are passivated by cathode electrolyte interfacial (CEI) and solid electrolyte interphase (SEI), respectively, under ideal conditions. On the other hand, passive layers are imperfect and will have an area where side reactions can occur. These reactions, which occur on both the cathode and anode, are a major cause of battery degradation. Due to lower overpotentials experienced by the cathode and anode and a likely lower operating temperature, side reactions are manageable at low currents, yielding the accepted cycle life in commercial LIBs. However, the local currency can be heterogeneous (especially under XFC conditions). Due to electron and ion flow resistance, it may cause significant Joule heating in the battery system.

The kinetics of each electrode’s side reactions (parasitic reactions) of electrolyte components will increase as the temperature rises. At the same time, the overpotential experienced by each electrode will allow the cathode potentials to be more anodic and the anode potentials to be more cathodic, resulting in a larger thermodynamic driving force for these parasitic reactions. The oxidation of electrolyte species on the cathode, potential corrosion of the Al current collector, and reduction of species in the anode are parasitic reactions, with some side reactions resulting in the production of gaseous compounds. It should be noted that research has shown that charging a 2-mAh cm2 single-layer NMC532/graphite pouch cell at rates up to 9C causes insignificant changes in cell temperature. However, this was accompanied by a small absolute current, which resulted in a maximum heating rate of only 16 mW.

4. Li Plating

The goal of using an N/P ratio that is typically greater than unity is to reduce the likelihood of Li plating. A low N/P, or a high cathode-to-anode areal capacity ratio of near unity, is dangerous because it increases the risk of locally saturating the graphite anode with Liions and bringing the local potential past 0 versus Li+/Li, allowing Li plating. It should be noted that as the current is increased, the heterogeneity in the current distribution is amplified. At high charge rates, the anode’s overpotential reduces the potential levels to the point where Li plating can occur, effectively lowering the battery’s N/P ratio below one.

Li plating, or reducing Li-ions to Li metal, is particularly hazardous because it allows Li dendrites to form. The cell is prone to thermal runaway if the cathode and anode are shorted by an internal Li dendrite. In addition, the formation of metallic Li allows the electrolyte to decompose. Because the SEI on Li metal is unstable, the continuously formed Li (due to its highly reductive nature) will constantly consume the electrolytes and produce gaseous species, degrading the cell’s cycle retention if a short circuit is not first established.

Furthermore, Li plating is well-known to occur when charging at low temperatures due to sluggish Li-ion transport in the electrolyte, resulting in large overpotential at low currents. Throughout the literature, the most effective way to overcome this is to warm the battery from ambient to room temperature before doing any significant charging. High temperatures, interestingly, were found to facilitate Li plating by increasing Li-ion reduction kinetics. However, this relationship between Li plating and temperature is only valid if the anode’s potential is low enough to allow Li plating thermodynamically. In other words, if Li plating occurs, a high operating temperature will likely accelerate dendrite growth.

5. High Susceptibility to Cell-to-Cell Variability

The amplification effect of any variability in the cell’s physical characteristics is at the root of these issues. Any spatial heterogeneity in the electrode could serve as a higher or lower current (depending on its local pressure), allowing the effective local current to be amplified beyond even the most difficult XFC conditions. Furthermore, it has been suggested that heterogeneity in binder/carbon black and active material aggregates has a significant impact under XFC conditions.

Aggregates have more active material per volume and lower mass transfer rates, resulting in preferential lithiation/delithiation as the degree of aggregation increases. They will cause more damage to the cell if they are combined, resulting in either a shorter cycle life or complete cell death. As a result, the manufacturing of XFC cells will necessitate a higher level of design to avoid any minor variations in the cells. In particular, the so-called secondary pore networks, which are intended to provide more efficient Li-ion transport highways, could have in-plane columns of electrodes that could serve as a point of higher contact pressure and, as a result, an undesirable higher local current.

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