Hina NaCR32140-MP10

The Hina NaCR32140-MP10 is a sodium ion based chemistry cylindrical cell with a capacity of 10Ah.

HiNa 32140 12Ah specifications
HiNa CR32140 specification sheet

In the original release of this cell we saw a specification showing 12Ah (left image).

However, the volume production shows this 32140 format is a 10Ah Sodium Ion cell.

Key Metrics

  • 111 Wh/kg
  • 248 Wh/litre
  • 533 W10s/kg
  • 1188 W10s/litre
  • Nominal Capacity = 10Ah
  • Nominal Voltage = 3.0V
  • Nominal Energy = 30Wh
  • Charge
    • Charge cutoff voltage
      • 3.95V T>0°C
      • 3.9V 0°C>=T>=-10°C
      • 3.8V -10°C>T>-20°C
    • Maximum charge rate
      • Standard = 0.5C (5A)
      • Maximum continuous = 3C (30A)
  • Discharge
    • Cutoff voltage = 2.0V
    • Standard continuous = 0.5C (5A)
    • Maximum continuous = 3C (30A)
HiNa 32140 NaB pulse discharge test

The maximum power has been calculated based on the 100A for 10s disharge test at 50% SoC at room temperature.

The OCV at 50% SoC = 3.129V

From this we can estimate the 10s DCIR ~10.5mΩ at 50% SoC and room temperature.

It is always really good to see the quoted values on the specification sheet matching the test data that has been shared.

  • ACIR <3mΩ AC 1kHz, 3.2V
  • DCIR <10mΩ 2C 30s, 3.2V
    • Pulse test data shows:
      • DCIR 10.5mΩ 10C, 10s, 50%SoC, room temperature
      • DCIR 11.0mΩ 10C, 60s, 50%SoC, room temperature

This post has been built based on the support and sponsorship from: Eatron TechnologiesAbout:EnergyAVANT Future MobilityQuarto Technical Services and TAE Power Solutions.

OCV

A look at the Open Circuit Voltage curves as Sodium Ion is a new chemistry to many.

HiNa 32140 OCV curves for charge and discharge

There is a small hysterisis between charge and discharge OCV curves. This is likely to result in a larger SoC prediction error in the 20% to 40% region.

The average OCV curve for this cell shows that there is a large voltage swing versus SoC compared to other chemistries. This does make it more difficult in terms of power electronics and delivering a constant power versus state of charge.

HiNa 32140 OCV curves versus other chemistry

The OCV versus the other sodium cell makes me think that the HiNa curve is more representative of the open circuit voltage for Sodium Ion and hence we will be updating the Workbook with this data.

Cell Capacity

The data shared shows that the cell capacity remains at high discharge rate and down to cold temperatures.

HiNa 32140 rate data

The following map shows the discharge capacity versus temperature and dicharge C-rate.

HiNa 32140 capacity versus discharge rate and temperature

The cell shows remarkably flat capacity performance across a wide temperature and rate.

Cycle Life

This is cycle life data from the specification sheet.

This will get updated as other sources of data become available.

0.5C Charge / 0.5C Discharge

Charge to 3.95V at 0.5C constant current and constant voltage at 25°C ± 5°C, discharge to 2.0V at 0.5C

HiNa 32140 sodium ion cell cycle life

Capacity Retention is 98% after 500 cycles.

2C Charge to 90% DoD / 2C Discharge

Charge to 3.80V (90% DOD) at 2C constant current, 25°C ± 5°C, discharge to 2.0V at 2C

HiNa 32140 2C / 2C cycle life

Capacity retention is 96% after 3850 cycles, expected life to 80% SOH is >25,000 cycles

1C Charge / 1C Discharge at 45°C

HiNa 32140 45°C cycle life

Safety Data

Data as shown on manufacturers specification sheet.

TestResultComments
External Short CircuitPassed
no fire, no explosion
Charge to 3.95V at 0.5C constant current and constant voltage at 25°C ± 5°C , and short circuit for 10min with an external circuit resistance of < 5mΩ .
OverchargePassed
Temperature increased to approximately 61°C
1C constant current charge to 6.0V at 25 °C ± 5 °C.
Forced DischargePassed
Capacity test passed after 3 over-discharge tests
Over-discharged: At 1C constant current to 0V at 25°C ± 5°C, then fully discharge it to 0V. u and then verify the capacity once.
Crush
ImpactPassed
No fire, no explosion, no leakage
Charge to 3.95V at 0.5C constant current and constant voltage at 25°C ± 5°C , weight height 610mm, weight weight 9.1kg, 15.8mm steel rod
Shock
Vibration
Temperature Cycling
Low PressurePassed
no fire, no explosion
Charge to 3.95V at 0.5C constant current and constant voltage at 25°C ± 5°C , and leave the battery under an absolute pressure of 11.6kPa for 6 hours at room temperature.
Nail Penetration
External HeatPassed
CIDs opened. There is no abnormality in appearance after the test, and there is no terminal voltage.
Charge to 3.95V at 0.5C constant current and constant voltage at 25 °C ± 5 °C.
After the battery is fully charged, place it in the heating test box.
Heat to 130°C at 5°C/min and then keep it for 30min.
Drop

Overview

The HiNa 32140 is a really interesting cell in terms of performance and specifications. The cold temperature performance is excellent and the cycle life at room temperature is showing early signs of being extraordinary.

The cycle life at 45°C is OK, but the form of the curve gives us concerns and we need to see data beyond 337 cycles to see if this curve is going to form into an early knee point and hence more rapid degradation.

One final note: this is all based on data kindly sent to us from the manufacturer. With extra data files and graphs kindly shared. We would really like to see independent data for this cell – if you have any test data / results that you can share we will happily update this page.

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