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Lvchi Venere

Automotive application

Lvchi Venere

Key project requirements

| Full EV prototype
| Usable energy > 100 kWh
| Gravimetric energy density > 180 Wh/kg
| Maximum discharge power: 320 kW

Podium Advanced Technologies has developed and built the first prototype of the 104 kWh battery pack for a high performance full electric car presented at 2018 Geneva Motor Show by Lvchi Auto Group, a Chinese manufacturer of electric
vehicles.

“Venere” is a high-performance, 740 kW all-electric four-seater, developed in partnership with Italian engineering
and design firm I.DE.A. Institute.
The whole electric powertrain system – including the battery
pack, the BMS, the electric motors controls – has been
designed, developed and assembled by Podium Advanced
Technologies.
The 100+ kWh lithium ion battery pack, using the proprietary
Podium Advanced Technologies BMS, has been designed with
the target to optimize the trade-off between max power output
and range extension, and has been assembled entirely in the Podium
Advanced Technologies laboratories, using leading-edge wire-bonding
technology facility.
The electric powertrain consists of four electric motors, two installed on
the front axle and two on the rear axle, combined with a differential per
axle, so as to implement a permanent all-wheel drive. The differential
housing also contains a two-speed transmission to optimize the
distribution of torque and power.

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Credits
ADDRESS
Via Carlo Viola 65
11026 Pont-Saint-Martin (AO) | Italy
Podium Engineering s.r.l. - P.IVA 01158110070
REA AO-72219 - Cap.Soc. EUR 1.000.000 i.v.
GDPR privacy notice for customers and suppliers
ADDRESS
Via Carlo Viola 65 - 11026 Pont-Saint-Martin (AO) | Italy
Podium Engineering s.r.l. - P.IVA 01158110070
REA AO-72219 - Cap.Soc. EUR 1.000.000 i.v.
GDPR privacy notice for customers and suppliers
Podium Engineering © 2021. All rights reserved​
Podium Engineering © 2021. All rights reserved​
ADDRESS
Via Carlo Viola 65 - 11026 Pont-Saint-Martin (AO) | Italy
Podium Engineering s.r.l. - P.IVA 01158110070
REA AO-72219 - Cap.Soc. EUR 1.000.000 i.v.
GDPR privacy notice for customers and suppliers

Assembly process

Sorting, Testing and Stacking Cylindrical
- Fully automated station
- 100% cells state of health testing (including open circuit voltage, resistance/AC impedance, temperature
- Stations able to handle module up to 1200 mm length
- Different cooling strategies can be handled within this station
- Similar capacity cells can be sorted and included in a module
- Fast and tack-free led lamp curing
- Accurate pressing operation
Sorting, Testing and Stacking Cylindrical
Sorting, Testing and Stacking Prismatic and Pouch
- Fully automated station
- 100% cells state of health testing (including open circuit voltage, resistance/AC impedance, temperature
- Stations can handle different cell dimensions and different thermal extraction strategies
- Accurate pressing operation
Sorting, Testing and Stacking Prismatic and Pouch
Bus Bar Laser Welding
- Cutting edge laser beam technology that guarantees robust joints for several type of busbar connections
- Possibility to weld challenging reflective materials such as CU, Al and dissimiral combination of materials
- Internal development of welding parameters
- Extensive quality control such as weld penetration in process monitoring and resistivity checks
- Stations can handle module up to 1200 mm length and 600 mm width
Bus Bar Laser Welding
Ultrasonic wire bonding
- Fully automatic station
- Wire bonding with the highest axis accuracy
- Continuous real time monitoring of wire condition and process
- Integrated quality control
Ultrasonic wire bonding
Pack assembly stations
- Stations equipped with manual assistors and process dedicated tools to allow assembly teams to work in perfect ergonomic and safe conditions
- Stations equipped with torque monitored tools
- Control tracking system to verify process completion and quality monitoring
- Junction box assembly and quality control
- Controlled sealing application completed after functional test
Pack assembly stations
EOL Testing
- Battery module and pack functional tests
- BMS firmware and software flashing
- Pack cooling system integrity test
EOL Testing

Main features

  • Safety: BMS Design compliant for ISO 26262
  • Scalable slave-master architecture, handles systems
    up to 1.000 V
  • Cell dissipative balancing

Functionalities

  • Real time monitoring cells & components voltage
    and temperatures
  • Advanced algorithms for SOC/SOH estimation
  • Advanced SOP estimation with realtime cell
    thermoelectrical models
  • Electromechanical components feedback monitoring
    and degradation estimation (fuses, contactors)
  • Control and monitoring of the thermal management system
  • Sensing of current, water leak, internal humidity, etc
  • Ground fault monitoring of grounded or ungrounded systems

Services related to BMS

  • Testing and modelling of battery cells
    and systems
  • Experimental characterization of cells
    for accurate state estimation algorithms
    (e.g., SOC, SOE, SOH, SOP)
  • BMS hardware and software development
    for specific applications
  • Prototyping of high-performance
    battery systems
  • Consulting in the field of battery systems

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