E2W Power Recommender

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Copyright © Liu HONG

48–96V Platform

E2W Power Recommender

Commercial E2W Pre-Sales Engineering Sizing Tool

Translate customer operating requirements into preliminary E2W powertrain and battery specifications.

Motor rated minimum

-

Motor peak minimum

-

Battery capacity minimum

-

Battery chemistry

NCM

Customer Requirement

Capture the customer's real operating needs during the pre-sales conversation.

Pre-Sales SizingTranslate customer operating requirements into preliminary E2W powertrain and battery specifications.

Persons, cargo & payload

Total persons on vehicleIncluding rider

persons

Cargo

kg

Manual total payload overrideWhen enabled, this value replaces persons + cargo.

Off

kg

Persons2 × 75 kg = 150 kg

Cargo0 kg

Applied Payload150 kg

Road & speed requirement

Average operating gradeUsed for rated power and acceleration sizing

5

%

Common steep gradeUsed for the separate steep-grade peak case

15

%

Required speed on steep grade

25

km/h

Target cruise speedSustained speed on average grade

40

km/h

Operating distance & energy replenishment

Daily operating distanceTotal distance travelled in one operating day

120

km/day

Energy replenishment mode

-

Distance per batteryMaximum distance between energy replenishment opportunities

120

km

For once-per-day plug-in charging, set this equal to daily operating distance. For swapping or opportunity charging, enter the maximum distance required between energy replenishment events.

Preliminary Design Choice

Nominal system voltage

72

V

Battery chemistry

-

Advanced Engineering SettingsReview or edit the assumptions used by the engineering model.

Vehicle mass

130

kg

Person mass assumption

75

kg/person

Boost speed

25

km/h

Desired acceleration at boost speed

1.6

m/s²

Rolling resistance coefficient

0.018

-

CdA

0.8

m²

Air density

1.2

kg/m³

Drivetrain efficiency

0.82

-

Rated power margin

20

%

Peak power margin

10

%

Expected energy consumption

45

Wh/km

Usable battery depth of discharge

90

%

Battery reserve margin

15

%

Applied continuous C-rate overrideLeave blank to use chemistry preset

C

Applied peak C-rate overrideLeave blank to use chemistry preset

C

Battery Ah rounding step

5

Ah

Available standard battery pack capacitiesComma-separated positive Ah values

Ah

Pre-Sales Recommendation

Preliminary minimum technical specification derived from the current operating requirement.

Pre-Sales Recommendation

Calculated requirements are shown as minimum specifications, not product SKUs.

Operating Requirement

Total persons on vehicle	-
Person mass assumption	- kg/person
Cargo	- kg
Applied Payload	- kg
Cruise speed	- km/h
Average grade	-%
Steep grade	-%
Required grade speed	- km/h
Daily distance	- km/day
Energy mode	-
Distance per battery	- km

Recommended Powertrain

Motor rated power	≥ - kW
Motor peak power	≥ - kW
Peak requirement driver	-
Nominal system voltage	- V
Controller continuous	≥ - A
Controller peak	≥ - A

Recommended Battery

Battery chemistry	-
Nominal system voltage	- V
Capacity	≥ - Ah
Nominal battery energy	≥ - kWh
Continuous discharge requirement	≥ - A
Peak discharge requirement	≥ - A
Suggested Standard Pack	-

Primary design constraint-

Detailed Engineering ResultsRated, peak, controller, power-limited battery, candidate, and energy calculations.

Power Requirement

Calculated rated motor requirement

-kW

Final peak motor requirement

-kW

Acceleration peak requirement

-kW

Steep-grade peak requirement

-kW

Peak requirement driver	-
Peak-to-rated ratio	-
Recommended minimum rated specification	≥ - kW
Recommended minimum peak specification	≥ - kW

Controller Requirement

Nominal system compatibility	- V
Calculated continuous battery current	- A
Calculated peak battery current	- A
Recommended continuous battery-side controller current	≥ - A
Recommended peak battery-side controller current	≥ - A

Controller maximum DC input voltage must be verified against the actual battery pack full-charge voltage.

Battery Power Capability Sizing

Target rated motor power used	- kW
Target peak motor power used	- kW
Target battery continuous current	- A
Target battery peak current	- A
Minimum Ah from continuous C-rate	- Ah
Minimum Ah from peak C-rate	- Ah
Power-limited technical minimum	- Ah
Power-limited rounded requirement	- Ah

Candidate Ah	Continuous C-rate	Peak C-rate	Power capability	Range capability	Overall status

Energy / Range Requirement

Daily usable energy requirement	- kWh
Battery-cycle usable energy requirement	- kWh
Required nominal battery energy	- kWh
Required Ah from energy / range	- Ah
Rounded energy / range requirement	- Ah

Final Battery Specification

Battery chemistry	-
Nominal system voltage	- V
Capacity	≥ - Ah
Nominal battery energy	≥ - kWh
Continuous discharge requirement	≥ - A
Peak discharge requirement	≥ - A
Actual continuous C-rate at final recommended capacity	- C
Actual peak C-rate at final recommended capacity	- C
Primary design constraint	-
Suggested Standard Pack	-

Final recommended battery capacity

≥ -Ah

Applied Engineering AssumptionsThe active values used in the current calculation.