EV用 セル / モジュール / パック

セル High energy cell

セル High energy cell

Superior Heat Dissipation and High Energy Density are Achieved

AESC's cells for EV applications are formed by layering cathodes and electrodes and then packing them in a laminate pack. The cells are sheet shaped with a dimension of 290mm × 216mm, and while they are compact, they also demonstrate large capacity. Stability is ensured and a long life span and large capacity are realized by blending lithium nickel oxide with a cathode material that is based on lithium manganese.
Another characteristic of AESC's cells is the excellent heat dissipation that results from the laminated structure with a wide surface area.

General specifications

Cell Type
Laminate Type
Cathode Active Material
LMO
with LNO
Anode Active Material
Graphite
Capacity (0.3C)
32.5 Ah
Nominal Voltage
3.75 V
Exterior Dimensions
Length
290mm
Width
216mm
Weight
787 g
Energy Density
317Wh/L
157Wh/kg

Cell performanceExample of discharge profiles (25°C, BOL)

UN test resultsExample of charge-discharge characteristics (25°C, BOL)

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Modules:High energy modules

Modules:High energy modules

A Compact Shape that Increases the Efficiency of Loading in Vehicles

The modules for EV use are formed by connecting 4 cells in a 2-series, 2-parallel formation and then housing the unit in metal case. The case functions to protect the cells from vibration and such and also increases the flexibility of the pack design because of its simple, compact shape.
The EV modules adopted in the Nissan Leaf and other vehicles feature a 2-series, 2-parallel formation, but applications with a 4-series formation are also possible.

General specifications

Number of Cells
4
Structure
2 parallel, 2 series
Exterior Dimensions
Length
303 mm
Width
223mm
Height
35mm
Weight
3.8 kg

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パック:High energy battery pack

パック:High energy battery pack

Vehicle Tailored Designs are Possible

The pack is formed by connecting multiple modules to sensors, a controller, and other components and then housing the unit in a case custom designed for each vehicle model.
The battery packs for both the Nissan Leaf and the Renault Kangoo are formed by connecting 48 modules in a series.
AESC's modules can be installed vertically or flat, and the pack can be designed with a shape that is tailored to the shape under the vehicle floor.
The packs for both the Nissan Leaf and the Renault Kangoo are designed with a voltage of 360V and a capacity of 24kWh and can store electric power that is equivalent to 2 days of electric power used by a standard home.

General specifications

Number of Modules
48
Nominal Voltage
360V
Capacity
24kWh

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EV用パックの回路模式図

Composition

Voltage, temperature, and such are constantly monitored by sensors attached to the modules in the pack. The data is sent from the battery controller to the vehicle control unit via a CAN (Controller Area Network).
When a vehicle is maintenanced at a service factory, the circuit is interrupted by operating the SDSW (Service Disconnect Switch) so that work can be safely performed.