Lithium-ion batteries in 2009 achieve a leap (b): requirement varies by vehicle

Lighter than nickel-hydrogen batteries 1 / 2 Lithium-ion rechargeable battery the advantages of easy to say that is the weight, volume of only nickel-metal hydride (Ni-MH) rechargeable batteries can achieve about half of the same performance. Battery performance in general to unit weight of energy and power to express, lithium-ion rechargeable battery unit weight of the energy density (the density in particular related to the EV travel distance) and power density (related to the HEV of the ease of charging and discharging) are nickel Hydrogen Toshiba laptop battery 2 times.
Sanyo Electric said that the development of batteries for the Audi, and its power density and energy density of nickel-metal hydride toshiba pa2487u battery has reached 2.3 times. Same, AESC's batteries have reached about 2 times, from the point of view of volume, it is estimated to reach about 2.3 times.
R & D in the current HEV, EV, PHEV three electric vehicles, the recognized are the closest practical level of HEV. System has been used in nickel-hydrogen toshiba pa3107u-1brs precedent to "Prius" as an example the use of the battery capacity is only about 1.3kWh.
On the other hand, EV and PHEV prototype car has also finally debut. EV at the field, the real production car will be iMiEV and Plugin Stella Concept of production constitutes the performance target. At this point even if the toshiba pa3383u-1brs capacity are light vehicles of iMiEV, also required Prius 12.3 times 16kWh.
Mitsubishi "iMiEV" At bottom, under a number of toshiba pa3384u-1brs configurations. Capacity of 16kWh, voltage of 3.7V, with a capacity of 88 units 50Ah battery.
EV Energy all drivers want to rely on batteries, and therefore more stringent requirements of the battery. Compared with the HEV battery status is usually (SOC) of 50% as the center, the scope of work of the toshiba pa3285u-1brs at its upper and lower 10%, EV's use of greatly expanding the scope of the need.
However, CO2 (carbon dioxide) emissions from the perspective of consumers, EV more advantages than the HEV. Click on the basis of projections Sanyo,toshiba pa3191u-1brs, HEV mode at 10.15 the CO2 emissions 123g/km, while the EV for 49g/km, the former can be reduced to 1 / 2 below.
PHEV can be equipped with more than HEV batteries, to extend the driving distance between the requirements for the HEV batteries with batteries and battery between EV. Nissan EV from the development experience, EV driving power required by the vehicle weight of 1.7t at level 150 ~ 250Wh/km. If you are 1.3kWh the Prius toshiba pa3166u-1brs, use about 20% of the SOC, the farthest we can only travel less than 2km.
And the PHEV Prius prototype vehicles through the nickel-metal hydride rechargeable batteries and in parallel double the size of obtained 2.6kWh capacity, will be extending the use of the SOC to 20 ~ 80%, so that battery-powered driving distance reach 13km. If its replaced by lithium-ion rechargeable batteries, Ni-MH rechargeable toshiba pa3331u-1brs only half the weight, you can achieve the same performance PHEV.
HEV and EV require different characteristics of The characteristics of the toshiba pa3098u-1brs in HEV, EV, PHEV three cars on what are the differences? Data to Toshiba as an example, the company developed for HEV batteries, the power density reached 3800W/kg, belong to high-power attention to type. Even though at supporting and accelerating the renewable electricity requirements with respect to accessibility of HEV high current flow through a short period of time, but not because of the battery-powered Long time traveling, so belong to a lower energy density level.
Toshiba's toshiba pa3084u-1brs performance and strive to achieve. HEV battery connection at a power density of the development of 3800W/kg products. At PHEV batteries are being developed with a capacity of 10Ah and 20Ah products. The EV battery objectives are to achieve energy density 150Wh/kg.
The EV is just the opposite. Although 100Wh/kg required more than high energy density, but not so high power density requirements. The PHEV performance target is between the range of HEV and EV. To Toshiba's PHEV toshiba pa3399u-1brs as an example, the company's goal is to achieve power density 1300W/kg, the energy density of 120Wh/kg.