{"id":2912,"date":"2019-06-06T12:56:06","date_gmt":"2019-06-06T10:56:06","guid":{"rendered":"https:\/\/www.servomotorsadjust.com\/?p=2912"},"modified":"2024-06-05T05:39:24","modified_gmt":"2024-06-05T03:39:24","slug":"glossary-hybrid-battery-terminology-acronyms-explained","status":"publish","type":"post","link":"https:\/\/www.servomotorsadjust.com\/en\/glossary-hybrid-battery-terminology-acronyms-explained\/","title":{"rendered":"Glossary Hybrid battery terminology & acronyms explained"},"content":{"rendered":"

Battery<\/strong><\/h2>\n

We use the term in relation to the individual physically solid\u00a0batteries forming the pack (e.g. 6-cell, 7.2V Battery or 8-cell, 9.6V Battery).<\/p>\n

Battery Electric Vehicle (BEV)<\/strong><\/h2>\n

An all-electric vehicle propelled by an electric\u00a0motor powered by energy stored in an on-board battery.<\/p>\n

Battery Internal Resistance<\/strong><\/h2>\n

With age internal impedance of the individual\u00a0battery may rise affecting its performance. It is also a contributing factor to\u00a0the self-discharge during storage. Our Analyser visually reveals batteries\u00a0with increased resistance during charge mode.<\/p>\n

Battery Pack<\/strong><\/h2>\n

Battery Pack could consist of a number of batteries assembled\u00a0together inside metal enclosure. Battery Pack normally would have Battery\u00a0Electronic Control Unit (Battery ECU) inside that enclosure, relays,\u00a0connectors, bus bars, temperature sensors, fuses, resistors and cooling fan\u00a0forming part or closely connected to that enclosure. Chemistry, number and type of batteries inside the pack differ according to the vehicle manufacturer,\u00a0car make and model. For example in Toyota Prius NHW-20 there are 28\u00a0NiMH 7.2V batteries, connected in series forming high voltage battery pack,\u00a034 in Camry, 20 in Prius C (Aqua), 30 in Estima etc.<\/p>\n

Design Capacity<\/strong><\/h2>\n

Sometimes called Rated Capacity. That could be found in\u00a0manufacturer specifications, e.g. Prismatic NiMH Battery in Prius NHW-20\u00a0has rated capacity of 6,5Ahr at 1C. Note that capacity tested at lower\u00a0discharge rates (e.g. 1A or lower in Racing Toys Cycle Chargers) could be\u00a0much higher than measured at 6 Amps. We saw anecdotal reports by DIY enthusiasts who were obtaining >7AH results on aged degraded Prius\u00a0batteries.<\/p>\n

DSCH \/ CHRG<\/strong><\/h2>\n

Battery Analyser discharge or charge mode.<\/p>\n

Electric Vehicle (EV)<\/strong><\/h2>\n

A general term used to describe any car that uses a\u00a0power source to drive an electric motor for propulsion.<\/p>\n

Electric Vehicle Supply Equipment (EVSE)<\/strong><\/h2>\n

Delivers electrical energy from an electricity source to charge an EV\u2019s batteries. It communicates with the EV\u00a0to ensure that an appropriate and safe flow of electricity is supplied. EVSE\u00a0units are commonly referred to as \u201ccharging stations\u201d or \u201ccharging points\u201d\u00a0and include the connectors, conductors, fittings and other associated\u00a0equipment.<\/p>\n

FCC<\/strong><\/h2>\n

Full Charge Capacity. That is all the battery in its current condition can\u00a0deliver. It degrades with battery age and number of CHRG\/DSCH cycles.
\nOur High Voltage Battery Testing Complex is capable of measuring Capacity\u00a0quickly and accurately on the individual battery level, whether it is 1.2V,\u00a07.2V, 9.6 or 20V battery or the series of those.
\nIn real life when you test batteries from the second hand vehicle \u2013 the FCC\u00a0of the Battery could be substantially lower its Design Capacity to the point\u00a0when the battery is considered to be no longer useful.<\/p>\n

Hybrid Electric Vehicle (HEV)<\/strong><\/h2>\n

A vehicle that combines a conventional\u00a0internal combustion engine (ICE) propulsion system with an electric\u00a0propulsion system to achieve improvements in fuel economy.<\/p>\n

Internal Combustion Engine (ICE)<\/strong><\/h2>\n

An engine in which the combustion of\u00a0liquid fuel (such as petrol, diesel, or biofuels) or a gaseous fuel (such as\u00a0compressed natural gas) and air occur at high temperature and pressure to\u00a0generate mechanical power. It is the dominant power source for on-road\u00a0vehicles today.<\/p>\n

LiPO<\/strong><\/h2>\n

Lithium Polymer type battery. Some EV vehicles use LiPO HV Batteries.<\/p>\n

NiMH<\/strong><\/h2>\n

Nickel Metal Hydride type battery. Those could be found in high\u00a0voltage traction batteries in Toyota Prius, Camry, Estima, Lexus, Honda and\u00a0other cars.<\/p>\n

OCV<\/strong><\/h2>\n

Open circuit voltage of a battery or an entire pack.<\/p>\n

Pb<\/strong><\/h2>\n

Lead Acid type starter 12V batteries in the ICE vehicles. Those types are\u00a0used in Toyota hybrid cars as well but not as a traction batteries. Lead Acid\u00a0batteries could be used as traction batteries in fork-lifters, golf carts and\u00a0mobility scooters.<\/p>\n

Plug\u2013in Hybrid Electric Vehicle (PHEV)<\/strong><\/h2>\n

A hybrid electric vehicle with a\u00a0high-capacity rechargeable battery that is capable of using electricity as its\u00a0primary propulsion source. The internal combustion engine typically assists\u00a0in recharging the battery or serves as a back-up when the battery is depleted.<\/p>\n

Remaining Capacity<\/strong><\/h2>\n

The amount of charge remaining in the battery at any\u00a0given point in time. Could be tested in Discharge mode from FCC down to the\u00a06V level in the 6-cell battery module or down to 8V in 8-cell module. Note\u00a0that remaining capacity of the individual battery is applicable to the\u00a0individual module only and will always be bigger than Usable Remaining Capacity of the assembled pack. Modules in the pack need to be in\u00a0conformance with each other and tested simultaneously under the same load\u00a0to come up to a informed decision of it\u2019s Usable Remaining Capacity.<\/p>\n

Battery Rebuild (or Recondition)<\/strong><\/h2>\n

Process of compiling the pack from good\u00a0tested modules aiming at achieving maximum possible URC. That would\u00a0always require a bigger number of good tested modules to choose from.\u00a0There are some hybrid shops and individuals who mislead people by\u00a0promising to \u201crecondition\u201d aged degraded pack without changing the\u00a0modules and even bring it to design specs. That is not possible. There is no\u00a0magic cure against pure laws of physics and aging.<\/p>\n

Usable Remaining Capacity (URC \u2013 our own terminology)<\/strong><\/h2>\n

The amount of\u00a0charge remaining in the battery \u2013 measured during discharge mode at\u00a0specific current down to the predefined voltage level until Delta V on battery\u00a0modules stays within the predefined limit.<\/p>\n

RSOC<\/strong><\/h2>\n

Relative State of Charge, defined as: Remaining Capacity\/Full Charge\u00a0Capacity. In some hybrid vehicles that is known as SOC \u2013 State of charge<\/p>\n