Not many details around the BYD Shark PHEV, but worth sharing what we know. The image shows a rectangular battery pack, typical of the BYD Blade design. This uniform shape keeps the cost low, but will challenge the packaging of the driveline and in particular propshafts.
A north-south configured 1.5-litre turbocharged four-cylinder petrol engine and two electric motors, one on each axle.
- Energy = 29.58 kWh
- Chemistry = LFP
- Cell = BYD Blade
- Power ~ 355 kW10s (320kW peak electric motor power and assuming 90% efficiency)
- Charging = 30 to 80% SoC in 20 minutes
This post has been built based on the support and sponsorship from: Thermo Fisher Scientific, Eatron Technologies, About:Energy and Quarto Technical Services.
- Configuration
- 114s 1p
- 2 modules of 57s 1p
The images come from the Shark Attack! Breaking Down BYD’s Battery Pack, Munro Live and this is really worth watching.
Munro take the top off this pack. The refrigerant loops split into two loops and this can be seen with the interface block at the front centre of the pack (bottom right of this image).
Heating of the cells is achieved with an electrical heater (orange element sheet) on top of the cells and bonded between the cells and the top coolant plate.
A top coolant plate is a good way of reducing the thermal loss to the environment as the other side of the coolant plate can be insulated and protected by the body floor.
The battery control system and HV control and distribution are all located at the front of the pack. A local CSC voltage and temperature sensing board is attached to one side of each module.
Structure
A simple box structural design in aluminium with mica inner surface coverings.
The top panel also houses the refrigerant coolant loop.
One of these vents on each side of the pack.
The foam outer layer is very strange and assumption is this is there for rattle control/noise reduction, maybe thermal.
Module
57 short blade cells connected in series. The local CSC control board fits under the plastic housing shown attached to the module. The clever part is that BYD have added an electrical pathway across the cell with a connection point at each end. This means that the electrical voltage sensing can be enabled by directly connecting the positive or negative terminal on one side of the cell to the transfer connection, this is then picked up by the CSC board on the other side of the cell.
This design element means BYD do not need to run a harness from one side of the module block to the other. Reducing the complexity of a harness and making for a more robust design.
The local CSC board can be seen above with the connections that align directly with the cells.
Cells
- BYD Short Blade
- Chemistry = LFP
- Nominal Voltage = 3.2V
- Nominal Capacity = 81Ah
Once again, huge thanks to Munro Live for their detailed teardown: Shark Attack! Breaking Down BYD’s Battery Pack and this is really worth watching.
BYD e-Platform 3.0
The 2021 BYD e-Platform 3.0 brought quite a few changes to the battery pack design. Now with more data available it is worth a more detailed look. BYD make a number of claims around the battery in this design.
See also: Plugin Hybrid Electric Vehicle