2. Operating Limits¶
2.1. High-Voltage Master Board¶
Danger
Exceeding the specified maximum ratings is strictly prohibited and it will result in the damage of the VinciX HVBMS Master module.
2.1.1. Electrical Characteristics¶
| Symbol | Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|---|
Stack Bus Specifications |
+Vsup | Input Voltage | Supplied Externally can be configured to work between 12V to 60VDC | 9 18 48 |
12 24 60 |
15 36 65 |
V DC |
| Input Current Without Contactors Driven | +Vsup = 12 V DC | 0.12 | - | 0.14 | A DC | CAN Bus Specifications |
| No. of Channels | 1 |
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| Rterm_CAN | CAN Termination resistance | - | 118 | 120 | 122 | Ω |
| Power Rating | At 70°C | - | 12 | W | ||
| Dominant Output | 1.5 | - | 3.0 | V DC | ||
| Recessive Output | 2 | 2.3 | 3 | V DC | ||
| Output Current | 15 | - | 30 | mA DC | ||
| Output Signal Rise Time | - | - | 150 | ns | ||
| Output Signal Fall Time | - | - | 200 | ns | ||
LMU Link Specifications |
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| Communication Type | Iso SPI | |||||
| No of Channels | 2 | |||||
| Transmitter Pulse Amplitude | - | 1.6 | V DC | |||
| Transmission Baude Rate | - | 1 | 1 Mbps | |||
| Transmission Current | - | 30 | mA | |||
USB Specifications |
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| I_USB | I_USB | - | - | 500 | mA DC | |
| +5V_USB | USB Voltage | - | - | 5 | V DC | |
GPIO-Out Specifications |
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| No. of Channels | 3 |
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| Vopen | Max Reverse Voltage | Between N and P | - | - | 70 | V DC |
| Imax | Max Source Current | - | - | 6 | mA | |
| Vout | GPIO Voltage Level | Between P and N | 10 | 12 | 13.2 | V DC |
| GPIO_ISO | Input-Output Isolation Voltage. | - | - | 5000 | V DC | |
GPIO-Out Specifications |
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| No of Channels | 7 |
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| Imax | Max Sink Current | 6 | mA | |||
| Vo | Voltage Level | 10 | - | 13.2 | V DC | |
| GPIO_ISO | Input-Output Isolation Voltage. | 5000 | V DC | |||
*All the inputs have 12V sourced from the board, no need to provide power externally. Also, in case if the external IO has voltage source. |
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Hall Sensor Specification |
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| Supply voltage (Vhall+ and Vhall -) | On Board derived | ±11.90 | - | ±12 | V DC | |
| Supply Current (Ihall+, Ihall-) | Maximum Current available for hall sensor – Board derived | ±250 | mA | |||
| Burden Resistance | 12 | - | Ohm | |||
| Burden Resistor Power | 1 | W | ||||
| Number of Channels | 1 |
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| Hall Sensor Type | Closed Loop Bidirectional, Bipolar, No offset. |
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*Example: HE300RET6 – Electrohms make closed loop hall sensor. |
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High Voltage Sense Specification |
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| Max Voltage Sense Range | High Voltage sense range | 875 | V DC | |||
| Isolation Level | Isolation between HV input and ADC Channel | 2.2 | KV | |||
| No of Sense Channels | 4 |
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Contactor Driver Specification |
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| Power Supply | For 12V Contactor SKU For 24V Contactor SKU |
10 18 |
12 24 |
15 30 |
V DC | |
| Max Continuous Current Per Contactor | 2 | A | ||||
| No of Contactors Driven | 3 |
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2.1.2. Environmental Conditions¶
| Symbol | Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|---|
Thermal Specifications |
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| Ta | Operating Temperature | -10 | 25 | 60 | °C |
| Ts | Storage Temperature | -20 | 60 | °C | |
Humidity Specifications |
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| RHa | Operational RH | 5 | 85 | % | |
| RHs | Storage RH | 5 | 85 | % | |
Shock and Vibration Specifications |
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| Vertical | Vertical shock/vibration as per AIS - 156 | - | 10 | m/s2 | |
| Longitudinal | Longitudinal shock/vibration as per AIS - 156 | - | 10 | m/s2 | |
| Mechanical Shock | On each axis as per AIS - 156 | - | 500 | m/s2 | |
2.1.3. Standards and Certifications¶
The HV BMS Master Board meets industry standards AIS-004 EMC/EMI and ESD respectively. All components are ROHS compliant and leadfree.
The HV Master Board was tested and certified for the below environmental standards
| Standard | Test Name | Temperature | Total No of Hours |
|---|---|---|---|
| IEC 60068-2-1 | Cold Test | -20C | 16 hrs |
| IEC 60068-2-2 | Dry Test | 60C | 16 hrs |
| IEC 60068-2-14 | Temperature Cyclic Test | -20C to +60C | 8 hrs, 1C Per Min, 2 hrs dwell time, 3 Cycles. |
| IEC 60068-2-30 | Damp Heat | Rh 95% & 55C | Max temp 55C, 95 %RH, Variant 1 |
| IS 9000 | Salt Mist Test | As per the standard | 72 hrs ( 2hrs spray +22 hrs rest, 3 cycles) |
| IS 9000 | Dust | 40C | 1 hr |
2.2. VinciX LMU Module¶
Danger
EExceeding the specified maximum ratings is strictly prohibited and it will result in the damage of the VinciX LMU module.
2.2.1. Electrical Characteristics¶
| Symbol | Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|---|
| Nc | Total No of cells in Series | 6 | - | 18 | ||
| Tn | Total no of Thermistors supported | 0 | - | 9 | ||
LMU Power Specifications |
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| V+ | Supply Voltage | 16 | 60 | 90 | V DC | |
| I+ | Supply Current Measured at 30VDC |
When Active | - | 4 | - | mA |
| When transmitting | - | 15 | - | mA | ||
| When in Sleep | - | 5.5 | - | uA | ||
| C(n) – C(n-1) | Cell Measurement Range | 0 | - | 5 | V DC | |
| TME | Total Measurement Error | C(n) to C(n–1)=4.2V, GPIO(n) to V– = 2.0 T= 26 °C |
±2 | ±5 | ±7 | mV |
Temperature Sensors Specifications |
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| IT | Temp Sensor Current | At sensor resistor 0 Ohm | - | - | 300 | uA |
| Type | Sensor Type | NTC Thermistors | ||||
| R25 | Thermistor Resistance | at 25 °C | - | 10 | - | Kohm |
| TV | Thermistor Sensor Voltage Range | - | - | 3 | V | |
*BMS FW Supports 103JT-025 thermistor by default, to use thermistor of different beta value, FW upgrade is required. |
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Cell Balancing |
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| Ibal | Average Cell Balancing Current | At 4.2V | - | - | 150 | mA |
| Rbal | Balancing Resistor | 15 | 16 | 17 | Ohm | |
| PR | Balancing Resistorr | - | 1 | - | W | |
| LMU Communication with Master Board | ISO-SPI | |||||
| Baud Rate | LMU COM baud rate | With twisted pair wires | - | 1 | - | Mbps |
*It is recommended to use single core twisted pair shielded cable for LMU communication to increase the noise immunity, preferred make : Belden |
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2.2.2 Environmental Conditions¶
| Symbol | Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|---|
Thermal Specifications |
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| Ta | Operating Temperature | -10 | 25 | 60 | °C |
| Ts | Storage Temperature | -20 | 60 | °C | |
Humidity Specifications |
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| RHa | Operational RH | 5 | 85 | % | |
| RHs | Storage RH | 5 | 85 | % | |
Shock and Vibration Specifications |
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| Vertical | Vertical shock/vibration as per AIS - 156 | - | 10 | m/s2 | |
| Longitudinal | Longitudinal shock/vibration as per AIS - 156 | - | 10 | m/s2 | |
| Mechanical Shock | On each axis as per AIS - 156 | - | 500 | m/s2 | |
2.2.3 Standards and Certifications¶
| Standard | Test Name | Temperature | Total No of Hours |
|---|---|---|---|
| IEC 60068-2-1 | Cold Test | -20C | 16 hrs |
| IEC 60068-2-2 | Dry Test | 60C | 16 hrs |
| IEC 60068-2-14 | Temperature Cyclic Test | -20C to +60C | 8 hrs, 1C Per Min, 2 hrs dwell time, 3 Cycles. |
| IEC 60068-2-30 | Damp Heat | Rh 95% & 55C | Max temp 55C, 95 %RH, Variant 1 |
| IS 9000 | Salt Mist Test | As per the standard | 72 hrs ( 2hrs spray +22 hrs rest , 3 cycles) |
| IS 9000 | Dust | 40C | 1 hr |
2.2.4 Using Multiple LMU Modules¶
When the no of cells to be monitored is more than 18 in a stack multiple no of VinciX-LMU modules are deployed as a daisy chain. The maximum number of modules that are supported in a stack depends on the required scan rate of the cell voltage measurements.
The timing analysis data yet be updated.