youyoung21147
100 mW
- Joined
- Jul 21, 2016
- Messages
- 41
Hello,
I just came across these 2 datasheets on QB's website.
Both are clearly addressing the EV and residential storage market. E63 is ~240Wh/kg and C1.5S is ~170Wh/kg.
It seems like the 65Ah model is the current (or future ?) Renault Zoe battery cell : the datasheet explicitely mentions 22 and 43kW charging scenario equivalent to 115/224W per cell. That means a 46kWh battery pack with 192 cells. The Renault Zoe has a 192-cell, 41kWh pack ! Some other details speak for themselves, like the way the puncture tests are performed in a cell holder similar to the Zoe battery pack architecture.
I'm very pleased to see how detailed the datasheets are. All the characterization has been performed to cover EV use scenarios :
- Temperature dependance
- Cycle life
- Shelf life
- SoC = f(voltage) for BMS charging and remaining energy calculation algorithms
- Max charge current = f(SoC)
- Impedance
That litteraly means thousands of measurements !
Interestingly, Renault is now offering to sell its Zoe and Twizy with battery since April 2018, which is very close to this datasheet's release date (February 2018). Before that, the only option was to rent the battery.
I can only suspect that LG and Renault extensive characterization of the battery cells ageing during the last years has led to this kind of datasheet and also to a contract between Renault and LG to guarantee the cell performance in the field.
If QB's pricing is accurate (at 92USD/kWh), that would wean factory pricing between 50 and 75USD/kWh for the cells. Today, the insured value of the Zoe battery in case of crash is 7000€, that is ~200USD/kWh.
This is really good news for the EV market, more mature and well-qualified cells at a lower price.
I do hope someone here can get some of these cells and make a super EV or solar project with them
I just came across these 2 datasheets on QB's website.
Both are clearly addressing the EV and residential storage market. E63 is ~240Wh/kg and C1.5S is ~170Wh/kg.
It seems like the 65Ah model is the current (or future ?) Renault Zoe battery cell : the datasheet explicitely mentions 22 and 43kW charging scenario equivalent to 115/224W per cell. That means a 46kWh battery pack with 192 cells. The Renault Zoe has a 192-cell, 41kWh pack ! Some other details speak for themselves, like the way the puncture tests are performed in a cell holder similar to the Zoe battery pack architecture.
I'm very pleased to see how detailed the datasheets are. All the characterization has been performed to cover EV use scenarios :
- Temperature dependance
- Cycle life
- Shelf life
- SoC = f(voltage) for BMS charging and remaining energy calculation algorithms
- Max charge current = f(SoC)
- Impedance
That litteraly means thousands of measurements !
Interestingly, Renault is now offering to sell its Zoe and Twizy with battery since April 2018, which is very close to this datasheet's release date (February 2018). Before that, the only option was to rent the battery.
I can only suspect that LG and Renault extensive characterization of the battery cells ageing during the last years has led to this kind of datasheet and also to a contract between Renault and LG to guarantee the cell performance in the field.
If QB's pricing is accurate (at 92USD/kWh), that would wean factory pricing between 50 and 75USD/kWh for the cells. Today, the insured value of the Zoe battery in case of crash is 7000€, that is ~200USD/kWh.
This is really good news for the EV market, more mature and well-qualified cells at a lower price.
I do hope someone here can get some of these cells and make a super EV or solar project with them