This EV Charging Glossary is a comprehensive reference for industry professionals, enthusiasts, and anyone looking to deepen their understanding of the EV charging landscape.
EV Charging Glossary
A
AC (Alternating Current)
The distinctive feature of AC is its ability to regularly reverse the direction of current, allowing for efficient transmission over long distances. While AC chargers are generally slower than their Direct Current (DC) counterparts, they are prevalent in residential settings, providing a convenient and widely accessible means for recharging electric vehicles.
AER (All-electric Range)
This metric, typically measured in miles or kilometres, provides a practical indication of an electric vehicle’s autonomy from traditional combustion engines, serving as a crucial factor in assessing the vehicle’s suitability for individual commuting or travel requirements.
B
BEV (Battery Electric Vehicle)
With no reliance on traditional fuel sources, BEVs exemplify a clean and efficient mode of transportation, highlighting a key facet of the ongoing shift towards more environmentally conscious and sustainable mobility solutions.
BMS (Battery Management System)
Acting as a vigilant guardian, the BMS plays a pivotal role in safeguarding the battery from potential risks such as overcharging, overheating, and deep discharge. By continuously monitoring the battery’s state, the BMS manages its charging and discharging processes to prevent adverse conditions that could compromise safety or diminish the battery’s longevity.
This critical component is integral in electric vehicles and other applications utilizing battery packs, contributing significantly to the enhancement of safety, efficiency, and the overall health of the battery system.
C
CCID (Charge Circuit Interrupting Device)
This device operates in real time, responding dynamically to unforeseen circumstances during the charging process. By promptly interrupting the power flow, the CCID acts as a crucial safeguard, mitigating risks and contributing significantly to the overall safety and reliability of electric vehicle charging systems.
CCS (Combined Charging System)
What distinguishes CCS is its amalgamation of AC and DC charging capabilities into a singular plug, showcasing adaptability for various charging needs. This standardization has contributed significantly to the interoperability of electric vehicles with diverse charging infrastructure, offering users a seamless and versatile fast-charging experience.
CHAdeMO
What sets CHAdeMO apart is its distinctive connectors, incompatible with other fast-charging standards, making it a standalone system developed to address the rapid charging requirements of electric vehicles, especially in its home country, CHAdeMO has extended its influence to other areas.
The unique connectors underscore the exclusivity of this standard, showcasing its role in providing efficient and dedicated fast-charging solutions for specific electric vehicles in various global markets.
Charging Cable
Charging cables are designed with various connectors, such as Type 2 for AC charging and CCS for DC fast charging, reflecting the diverse standards in the electric vehicle ecosystem. Furthermore, these cables come in different lengths and connector types to ensure compatibility with various charging stations and electric vehicle models.
The adaptability of charging cables is crucial for accommodating the evolving landscape of charging technologies, promoting interoperability, and enhancing the overall accessibility of electric vehicle charging for users.
Charging Network
Charging networks, managed by various providers, contribute substantially to the usability and acceptance of electric vehicles by establishing a comprehensive and convenient infrastructure for charging. By strategically placing charging stations along travel routes, these networks alleviate range anxiety and play a pivotal role in fostering the broader adoption of electric vehicles.
The Tesla Supercharger network, as a prominent example, underscores the importance of robust charging networks in promoting the widespread use and acceptance of electric mobility.
Charging Session
The duration of a charging session may vary and is influenced by factors such as the charging speed and the desired range increase. For instance, a charging session at a public station could last around 30 minutes, adding a specific amount of range to the electric vehicle. Importantly, charging sessions may involve different charging speeds and costs, contingent on the type of charging station used, highlighting the adaptability of this concept to cater to the diverse preferences and requirements of electric vehicle users.
This term encapsulates the dynamic and flexible nature of the charging process, accommodating various scenarios from quick top-ups to overnight charges, contributing to the overall convenience and usability of electric vehicles.
CPMS (Charge Point Management System)
This system empowers Charge Point Operators (CPOs) by providing a centralized hub for overseeing diverse charging infrastructure elements. Through the CPMS, CPOs can remotely track charging activity, set pricing structures, and promptly address issues, enhancing the overall efficiency and effectiveness of managing charging networks.
The CPMS is a cornerstone in ensuring the seamless operation and optimization of charging infrastructure, allowing for dynamic control, monitoring, and maintenance of charging stations across various locations, ultimately contributing to the reliability and user-friendliness of the electric vehicle charging ecosystem.
CPO (Charge Point Operator)
CPOs play a central role in the deployment, management, and accessibility of charging networks, ensuring that electric vehicle users have convenient and reliable charging options. This diverse category encompasses utilities, government agencies, private companies, and even individual entrepreneurs, reflecting the inclusive nature of those involved in facilitating electric mobility.
By taking on the responsibility of owning and operating charging stations, CPOs contribute significantly to the growth, accessibility, and sustainability of electric vehicle charging infrastructure, thereby supporting the broader adoption and integration of electric vehicles into the transportation ecosystem.
CPI (Charge Point Installer)
Beyond the installation process, CPIs play a pivotal part in expanding the charging infrastructure and upholding its reliability. Their contribution is instrumental in supporting the growing demand for electric vehicles, as they actively contribute to the establishment of a robust and efficient charging network, fostering the accessibility and convenience of EV charging for a burgeoning user base.
D
DC (Direct Current)
This proficiency in rapid charging makes DC chargers particularly advantageous for electric vehicles engaged in long-distance travel, showcasing their importance in the evolving landscape of electric mobility infrastructure.
E
eMSP (Electro-mobility Service Provider)
This broad term includes companies involved in various facets of electric mobility, such as operating car-sharing fleets, providing fleet management solutions, and offering subscription services for electric vehicles. An eMSP exemplifies versatility, adapting to the evolving needs of the electric mobility ecosystem by delivering a comprehensive suite of services.
Whether it involves developing and managing charging infrastructure or engaging in innovative approaches like car sharing and subscription services, eMSPs play a pivotal role in advancing and supporting the broader adoption and integration of electric vehicles into the transportation sector.
EV (Electric Vehicle)
The Tesla Model S serves as a notable example, emblematic of the widespread adoption of electric propulsion technology. EVs, gaining popularity due to their environmental advantages and continuous advancements in battery technology, offer a diverse and sustainable alternative to traditional internal combustion engine vehicles.
EVSE (Electric Vehicle Supply Equipment)
As a pivotal element in the electric mobility infrastructure, EVSEs contribute significantly to enhancing the accessibility and convenience of electric vehicle charging, playing a vital role in supporting the broader adoption of sustainable transportation.
EVSP (Electric Vehicle Service Provider)
This distinct category primarily engages in the operation and management of charging networks, overseeing network functionality, handling billing processes, and conducting data analysis to enhance the efficiency of charging infrastructure. The role of an EVSP is pivotal in ensuring the smooth operation of charging stations, offering a dedicated focus on optimizing the charging experience for electric vehicle users.
By specializing in charging-related services such as network operation, billing, and data analysis, EVSPs contribute significantly to the development, reliability, and efficiency of charging infrastructure, supporting the broader adoption and integration of electric vehicles into the transportation landscape.
F
FCEV (Fuel Cell Electric Vehicle)
The Toyota Mirai serves as an exemplar of this technology, illustrating the utilization of fuel cells in automotive propulsion. FCEVs, distinct from Battery Electric Vehicles (BEVs), boast extended driving ranges, a notable feature attributed to their reliance on hydrogen.
However, their broader adoption is hindered by the limited availability of hydrogen infrastructure, highlighting a current constraint in the expansion of fuel cell technology in the realm of sustainable and zero-emission transportation.
FHEV (Full Hybrid Electric Vehicle)
This dual-mode functionality provides FHEVs like the Toyota Prius with an effective solution for urban commuting, where electric power is efficient, while still addressing the need for extended range during highway driving.
The FHEV design exemplifies a balance between the benefits of electric propulsion and the extended range offered by a gasoline engine, making it a practical and adaptable choice for drivers seeking a flexible and fuel-efficient hybrid vehicle.
G
GFCI (Ground Fault Circuit Interrupter)
Triggered by the detection of a ground fault, the GFCI swiftly interrupts the circuit, exemplified by its role in charging stations where it ensures user safety by promptly cutting off power in case of a fault. Particularly vital in outdoor charging environments where moisture and ground faults pose heightened risks, GFCIs serve as essential safeguards, swiftly disconnecting power to prevent potential electric shocks.
Their application underscores their paramount role in enhancing the overall safety and reliability of electric vehicle charging infrastructure, contributing to a secure charging experience for users.
GHG (Green House Gas)
A prominent example of a GHG is CO2, commonly emitted from combustion engines. These gases create a “greenhouse effect” by trapping infrared radiation, resulting in a gradual rise in global temperatures. Notably, Electric Vehicles (EVs) emerge as a pivotal solution in the battle against climate change, as they produce zero tailpipe emissions during operation, thereby playing a crucial role in reducing overall GHG emissions.
This underscores the significance of EVs in fostering a more sustainable and environmentally conscious approach to transportation, contributing to global efforts to mitigate the impact of greenhouse gases on the Earth’s climate.
H
HEV (Hybrid Electric Vehicle)
Unlike Plug-in Hybrid Electric Vehicles (PHEVs) and Battery Electric Vehicles (BEVs), HEVs do not require external charging, as they generate electric power through regenerative braking and the internal combustion engine.
This unique dual-power system not only contributes to increased fuel efficiency but also reduces emissions, positioning HEVs as a pragmatic choice for individuals seeking a practical compromise between traditional and electric vehicle technologies.
I
ICE (Internal Combustion Engine)
In contrast to Electric Vehicles (EVs), which utilize electric power, ICE vehicles contribute to air pollution and are reliant on finite fossil fuel resources. The distinction between these two propulsion systems underscores the environmental benefits of EVs, emphasizing reduced air pollution and a departure from traditional fossil fuel dependence, aligning with global initiatives to promote sustainability in the realm of transportation.
IEC 62196
Illustrated by the Type 2 connector’s compliance in Europe, this standard plays a crucial role in establishing a unified framework for electric vehicle charging. Encompassing various aspects such as connector design and communication protocols, IEC 62196 aims to promote interoperability among charging infrastructure components globally.
By adhering to these guidelines, electric vehicle manufacturers and charging station developers contribute to the creation of a standardized and reliable charging infrastructure, fostering a safer and more efficient environment for the expanding realm of electric mobility.
K
kWh (Kilowatt-hours)
For instance, a Nissan Leaf with a 40 kWh battery showcases the practical application of this metric, offering an approximate travel range of 150 miles on a full charge.
Understanding kWh proves essential for consumers in estimating charging costs and determining the potential range of an electric vehicle, serving as a standardized measure that aids in informed decision-making regarding the efficiency and performance of electric mobility solutions.
L
Level 1 Charging
While suitable for overnight charging scenarios, Level 1 chargers may not meet the demands of drivers with higher daily mileage due to their relatively slower charging rate. Despite this limitation, Level 1 Charging remains a practical and widely accessible solution, especially for users looking to maintain their electric vehicle’s charge during periods of inactivity or when faster charging options are not readily available.
Level 2 Charging
Known for versatility, Level 2 chargers effectively cater to the charging needs of most electric vehicle users, providing a balance between charging speed and accessibility. Widely deployed in various locations, including residences and public charging stations,
Level 2 Charging offers a practical and efficient solution for electric vehicle owners seeking a faster recharge without the speed of DC fast charging, contributing to the increased accessibility and adoption of electric mobility.
Level 3 Charging
Typically found at highway rest stops, Level 3 chargers play a crucial role in supporting long-distance travel by allowing quick top-ups during road trips. Their utilization of Direct Current (DC) enables a swift recharge, minimizing the overall charging time and providing an efficient solution for electric vehicle owners aiming to optimize their journeys.
Despite their importance in reducing charging stops, the availability of Level 3 chargers may be limited compared to slower charging alternatives. Nevertheless, their strategic placement at key locations contributes significantly to the convenience and practicality of electric mobility, especially for those embarking on extended travels.
M
mpkWh (Miles per Kilowatt-hour)
For example, an electric vehicle boasting an efficiency rating of 4 mpkWh signifies its capability to cover 4 miles on a single kilowatt-hour. Higher mpkWh values indicate superior energy efficiency, translating to more miles per charge and, consequently, more resourceful use of electrical energy.
This metric plays a pivotal role for consumers, aiding them in comparing and evaluating the energy efficiency of different electric vehicle models, ultimately influencing informed decisions regarding the optimal balance between efficiency and range.
As advancements in electric vehicle technology continue, the focus on improving mpkWh values contributes to the ongoing evolution of sustainable transportation by maximizing the distance covered on each unit of electrical energy consumed.
O
Off-peak Charging
Beyond individual benefits, this practice also plays a crucial role in grid management by redistributing the charging load to times of lower demand. By doing so, Off-peak Charging helps mitigate strain on the grid during peak hours, contributing to a more balanced and resilient electricity infrastructure.
This practice aligns with the broader objectives of optimizing energy consumption patterns, promoting sustainability, and ensuring the efficient use of resources within the evolving landscape of electric mobility.
OCPI (Open Charge Point Interface)
An illustrative scenario involves an OCPI-compliant charging station, which seamlessly communicates with electric vehicles from different manufacturers, exemplifying the standard’s capacity to bridge communication gaps between various networks. Beyond mere technical specifications, OCPI plays a pivotal role in shaping a more accessible and interconnected charging infrastructure.
By promoting interoperability, OCPI empowers electric vehicle users with the flexibility to charge at different stations, irrespective of the charging provider or network. This open standard, therefore, contributes significantly to the evolution of a cohesive and user-friendly electric mobility ecosystem, enhancing the overall accessibility and convenience of electric vehicle charging experiences for both users and charging station providers alike.
OCPP (Open Charge Point Protocol)
Charging network operators rely on OCPP to conduct remote surveillance of OCPP charger’s statuses and deliver software updates, exemplifying its role in streamlining operational processes. Beyond its practical applications, OCPP significantly contributes to the overall efficiency and reliability of charging networks by facilitating seamless communication between diverse components.
This protocol establishes a standardized framework, fostering interoperability among charging station manufacturers and operators. By enabling remote oversight and proactive maintenance, OCPP plays a pivotal role in advancing the capabilities of smart and interconnected charging infrastructure, responding effectively to the evolving needs of the electric mobility landscape.
OCSP (Open Smart Charging Protocol)
This protocol is poised to revolutionize the charging experience by allowing automatic adjustments that minimize strain on the grid during peak periods while maximizing the utilization of renewable energy sources.
OCSP represents a significant step towards a smarter and more responsive EV charging infrastructure, aligning with the broader goals of sustainability and grid-friendly energy management in the electric mobility landscape.
P
PHEV (Plug-in Hybrid Electric Vehicle)
PHEVs offer distinctive flexibility, providing electric-only operation for shorter distances and utilizing gasoline assistance for extended trips. The larger battery capacity in PHEVs enables external charging, extending the electric-only range and diminishing dependence on traditional gasoline power.
This dual-power functionality not only contributes to reduced emissions and heightened fuel efficiency but also grants drivers the adaptability to tailor their driving mode according to specific needs, positioning PHEVs as a practical choice for those seeking a harmonious blend of electric and conventional driving experiences.
Private Charging
This method stands as the most common and accessible way for electric vehicle owners to recharge their vehicles, relying on home-based charging stations or personal charging infrastructure. Beyond its prevalence, private charging underscores user autonomy, offering the flexibility to integrate charging seamlessly into daily routines and ensuring electric vehicles are consistently ready for use without dependence on external charging facilities.
The convenience and accessibility of private charging contribute significantly to the widespread adoption and acceptance of electric mobility by enhancing the overall user experience.
Public Charging
This infrastructure is integral to expanding the range and usability of electric vehicles, particularly during long trips, by providing accessible and widely distributed charging options. Public charging addresses the need for recharging beyond private residences, offering electric vehicle users the flexibility to recharge while on the go, thereby contributing significantly to the widespread adoption and acceptance of electric mobility.
The strategic placement of public charging stations in high-traffic areas ensures their availability and accessibility, enhancing the overall convenience and viability of electric vehicles in various usage scenarios.
R
Range
Potential electric vehicle buyers consider range as a pivotal factor in their decision-making process, aligning their choice with their typical driving needs. It serves as a key performance indicator, reflecting the vehicle’s capability to meet the user’s travel requirements without the need for frequent recharging.
As advancements in battery technology continue, the range becomes an increasingly essential element, contributing to the overall practicality, usability, and acceptance of electric vehicles within the broader transportation landscape.
Range Anxiety
This psychological barrier has historically influenced driving behaviours and hindered the widespread adoption of electric vehicles. However, as technology has advanced and electric vehicle capabilities have improved, range anxiety is gradually diminishing. Advancements in battery technology, resulting in extended ranges, coupled with the expansion of charging networks, contribute significantly to alleviating these concerns.
The ongoing efforts to address range anxiety play a pivotal role in bolstering confidence among consumers, ultimately fostering a more widespread acceptance of electric mobility in the evolving landscape of sustainable transportation.
RPM (Revolutions per Minute)
Unlike traditional vehicles relying on RPM for power delivery through gear transmissions, electric vehicles exhibit a distinct characteristic of generating instantaneous torque across their RPM range, resulting in a smoother and more direct power delivery.
Understanding RPM contributes to a holistic grasp of the nuanced differences between EVs and ICE vehicles, shedding light on the unique features and advantages of electric propulsion systems in the realm of modern transportation.
S
Semi-public Charging
Unlike public charging stations that are open to all, semi-public charging caters to specific communities or organizations, tailoring the accessibility of charging infrastructure to the needs of a defined user group. For instance, a company might implement semi-public charging by providing dedicated charging stations for its employees within the workplace premises.
This approach enhances the convenience and availability of electric vehicle charging for a targeted audience, contributing to the integration of sustainable transportation solutions in specific community or organizational settings.
SAE J1772
Illustrated by the Chevrolet Bolt’s utilization of the SAE J1772 connector for AC charging, this standard plays a pivotal role in creating a harmonized and interoperable charging infrastructure. The prevalence of SAE J1772 connectors in North American charging networks fosters a consistent and standardized approach, simplifying the charging experience for electric vehicle users.
By adhering to this standard, electric vehicle manufacturers contribute to the seamless integration of their vehicles into the regional charging ecosystem, ultimately enhancing accessibility and usability for electric vehicle owners across the continent.
T
Tesla Supercharger
Distinguished by its high charging speeds, the Tesla Supercharger network contributes significantly to the efficiency of recharging Tesla electric vehicles. However, it’s crucial to highlight that Tesla Superchargers are exclusively compatible with Tesla vehicles, emphasizing the brand’s commitment to providing an exclusive and streamlined charging experience for its customers.
This proprietary infrastructure represents Tesla’s strategic approach to optimizing the convenience and accessibility of long-distance travel for their electric vehicle users, showcasing a commitment to both technological innovation and a seamless charging ecosystem.
Torque
This critical factor plays a pivotal role in dictating the dynamic and responsive performance exhibited by many electric vehicles. The emphasis on high torque aligns with the inherent advantages of electric propulsion, showcasing an ability to deliver robust acceleration and a driving experience characterized by immediate responsiveness.
The significance of torque in electric vehicles underscores its role as a key determinant of their impressive acceleration and performance capabilities, contributing to the ongoing evolution of electric mobility.
Type 1 Plug
This standardized connector provides a uniform interface for electric vehicles and charging stations, ensuring compatibility and ease of use. Type 1 Plugs play a pivotal role in fostering interoperability across diverse electric vehicle models and charging infrastructure, contributing to the seamless integration of electric mobility in North America.
The widespread adoption of the Type 1 Plug emphasizes the importance of a standardized approach to AC charging, enhancing user convenience and accessibility while reinforcing a consistent and reliable charging experience for electric vehicle owners throughout the region.
Type 2 Plug
This standardized connector is exemplified by its integration in the Renault Zoe, a popular electric vehicle in Europe utilizing the Type 2 Plug for AC charging. Widely adopted in these regions, Type 2 Plugs provide a uniform charging interface, promoting interoperability and contributing to a seamless charging experience.
The standardization of Type 2 Plugs not only enhances convenience for electric vehicle owners but also underscores the importance of a consistent and reliable charging infrastructure to support the growing adoption of electric mobility in Europe and Asia.
V
V2G (Vehicle-to-grid)
The bidirectional flow of energy facilitated by V2G technology establishes a symbiotic relationship between electric vehicles and the electric grid, optimizing energy usage and supporting grid resilience.
This innovation not only benefits the grid by efficiently managing energy resources but also provides electric vehicle owners with the potential for additional revenue streams, underscoring the dual advantages of V2G for both individual users and the broader energy ecosystem.
Z
ZEV (Zero-emission Vehicle)
We hope our Comprehensive EV Charging Glossary will help you in your research on EV charging and electric vehicles in general. If you plan to install a Home EV Charger, read our thorough review of the best EV Home Chargers. Additionally, please browse our EV Charger Reviews and helpful EV charging guides for more valuable insights.
We aim to support your research and decision-making in electric vehicles.
About the Author: James Ndungu
James Ndungu, founder and editor-in-chief of Electric Vehicle Geek, brings over five years of hands-on experience in Electric Vehicle Supply Equipment (EVSE) selection, permitting, and installation. He specializes in assisting businesses and homeowners in the United States with a seamless transition to electric vehicles.
As a certified EV charger installer and holder of advanced certifications, including the EVITP (Electric Vehicle Infrastructure Training Program), Diploma in Electric Vehicle Technology, and Diploma in Engineering Fundamentals of Electric Vehicles, I provide expert guidance and in-depth reviews on the latest EV charging equipment.