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Cell Management Unit

This section provides information on the Prohelion D1000 Gen2 Cell Management Unit (CMU).

Figure 1: Prohelion BMS D1000 Gen2 CMU

Figure 1: Prohelion BMS D1000 Gen2 CMU Cell Sense Connector

Features

  • Up to 14 Cell Voltage Measurements at 1mV Accuracy
  • Up to 4 Temperature Measurements
  • Up to 650 mA Balancing Current per Cell
  • Support ASIL D Requirements for Cell Voltage, Temperature, Communication
  • AECQ-100 Grade 1 Temperature Range
  • Isolated Battery Management Daisy-Chain Protocol

Specifications

Parameter Value
Operating Voltage Range 9 V to 65 V
Operating Temperature Range -40°C to +125°C
Ultra-Low-Power Operation Shutdown Mode: 2µA
Number of Cell Voltage Measurements 4-14 (configurable)
Number of Temperature Measurements 0-4 (configurable)
Measurement Accuracy 1mV Accuracy (3.6V, +25°C), 2mV Accuracy (+5°C to +40°C), 4.5mV Accuracy (-40°C to +125°C)
Balancing Current 650 mA @ 100% duty-cycle

Dimensions

Figure 1: Prohelion BMS D1000 Gen2 CMU

Figure 1: Prohelion BMS D1000 Gen2 CMU

Connectors and Pinouts

Connector Name Receptacle Part Number Plug Part Number
Cell Sense Connector JAE Electronics MX34R32HF4T JAE Electronics MX34032SF1
Upper Communication Port JAE Electronics MX34R08HF4T JAE Electronics MX34008SF4
Lower Communication Port JAE Electronics MX34R08HF4T JAE Electronics MX34008SF4

Cell Sense Connector Pinout

Figure 1: Prohelion BMS D1000 Gen2 CMU

Figure 1: Prohelion BMS D1000 Gen2 CMU Cell Sense Connector
Pin Number Label Pin Number Label
1 Not Connected 17 Not Connected
2 Not Connected 18 Not Connected
3 Top of Stack (see note 1) 19 Cell 14+
4 Cell 13+ 20 Cell 12+
5 Cell 11+ 21 Cell 10+
6 Cell 9+ 22 Cell 8+
7 Cell 7+ 23 Cell 6+
8 Cell 5+ 24 Cell 4+
9 Cell 3+ 25 Cell 2+
10 Cell 1+ 26 Cell 1- (GND) (see note 2)
11 Not Connected 27 Cell 1- (GND) (see note 2)
12 Not Connected 28 Not Connected
13 Temp 4 - GND (see note 3) 29 Temp A4
14 Temp 3 - GND (see note 3) 30 Temp A3
15 Temp 2 - GND (see note 3) 31 Temp A2
16 Temp 1 - GND (see note 3) 32 Temp A1

Upper Communication Port Pinout

Pin Number Label Pin Number Label
1 TX Upper Positive 5 TX Upper Negative
2 Not Connected 6 Not Connected
3 Not Connected 7 Not Connected
4 RX Upper Negative 8 RX Upper Negative

Lower Communication Port Pinout

Pin Number Label Pin Number Label
1 TX Lower Positive 5 TX Lower Negative
2 Not Connected 6 Not Connected
3 Not Connected 7 Not Connected
4 RX Lower Negative 8 RX Lower Negative

  1. Note 1: Top of stack is to be connected to the highest potential cell of the CMU. E.g. If the CMU is only measuring 10 cells, Top of Stack is considered to be the 10th cell (Cell 10+). ↩

  2. Note 2: Pins labelled as "Cell 1-" are the ground reference for the CMU. They are not the same as battery ground or any other ground. ↩↩

  3. Note 3: The pins labelled as "Temp X - GND" on the temp sense connector is not to be used for anything other than providing a ground reference for the respective thermistor on the same connector. They are not the same as battery ground or any other ground. A short-circuit between battery ground and the thermistor ground could result in damage. ↩↩↩↩