Visteon SLA8 sense Line Assembly User Manual
- June 5, 2024
- Visteon
Table of Contents
SLA8 sense Line Assembly
User Manual
Model Name: | SLA8 |
---|---|
Type of product: | Sense Line Assembly |
Brand Name: | Visteon |
Manufacturer: | Visteon Corporation |
Manufacturer Address: | One Village center drive, Van Buren Township |
48111-5711 Michigan United States of America
SLA Features
The SLA (Sense Line Assembly) is an electronic module intended to monitor
battery module cell groups voltages and module temperatures from the High
Voltage battery bus in addition to activating cell balancing to improve
battery cell life.
All cell voltages and module temperatures are reported directly to the VICM3
on a regular periodic basis via Wireless communication through the BRFM.
The SLA implements a Cell Monitoring Unit board that uses a Pinnacle IC
(ADRF8800), this is an IC that provides wireless communication between the
Battery Cell Monitoring chip and the Battery Management System Controller
System interaction:
Module-to-Vehicle Electrical Interface
Analog Input| The battery module provides voltage to SLA. The power
nominal value is 29.2V Minimum voltage expected is 8V and the maximum is
35.2V. NTC1, NTC2, and NTC3 thermistors from ICB.
Digital (discrete state) Input| NA
Analog Output| NA
Digital (discrete state) Output| NA
Communication Bus| NA
RF Link(s)|
ISM Band (2.4GHz to 2.5GHz) is used to communicate with BRFM modules. Rx sensitivity shall be around 50% of PER, where each measurement shall vary by no more than +/- 2.0dB from the golden sample. Tx output power shall vary by no more than +/-2.5dB from the golden sample. Radiofrequency reference shall be within ± 20PPM from the desired frequency (2.44GHz, channel 7).
Module-to-Vehicle Non-Electrical Interface
N/A
User Interface
NA
Internal Interface
Note: For these internal I/O, monitoring shall only occur via
communication bus data or via indirect methods. Direct monitoring using
attachments leads to external monitoring devices shall not be included.
Analog Input| NA
Digital (discrete state) Input – steady-state I/O| NA
---|---
Switching & Clock Frequency Content| SPI communication shall be 1Mbps
nominal. Used to communicate between RF manager to Sensors ASIC. RF Manager IC
XTAL frequency shall be 40MHz nominal.
Digital (discrete state) Input – dynamic I/O| NA
Analog Output| The main power supply SMPS U302 0shall has an output
voltage of 3.3V with ±5mV peak-to-peak ripple voltage
Digital (discrete state) Output
Communication Bus
Note: This section assumes that production software is not mandatory; the
use of specialized software is acceptable.
Note: Software diagnostic timers should be reset to minimum detection
values, to facilitate assertion of potential diagnostic flags during the RF
exposure time (maximum 2 seconds).
Note: States/faults/issues shall be reported directly over the
communication bus (i.e., Class 2, Controller Area Network (CAN), etc.) or
indirectly if the communication bus is not available via the cycling of
output(s) (e.g., PWM duty cycle change, telltale flash rate change, etc.)
Note: Unless otherwise specified in the EMC Test Plan, in order to ensure
a refreshed value, all information related to data monitoring (such as analog
input voltages, operating states, etc.) shall be via parameter requests (e.g.,
Parameter ID (PID)) and not via scheduled, or periodic, broadcast messages.
This ensures bi-directional communications during immunity testing.
The following information shall also be included in the case of radio
equipment intentionally emitting radio waves:
a. Frequency band: 2.4 2.5 GHz b. Maximum radio-frequency power is
transmitted in the frequency band(s) in which the radio equipment operates.
Max output power = 10 dBm
(U.S.A. and Canada)
FCC This device complies with Part 15 of the FCC Rules. Operation is
subject to the following two conditions: (1) This device may not cause harmful
interference, and (2) The device must accept any interference received,
including interference that may cause undesired operation.
Changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
RF exposure safety
This device complies with the FCC RF exposure limits and has been evaluated
in compliance with portable exposure conditions.
The equipment must be installed and operated and was evaluated with a minimum
distance of 5.668 cm from the human body. This distance or greater is
maintained by vehicle design and ensures compliance with the normal use of the
vehicle.
Changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
RF exposure safety This device complies with the FCC RF exposure limits and
has been evaluated in compliance with portable exposure conditions.
The equipment must be installed and operated and was evaluated with a minimum
distance of 5.668 cm from the human body. This distance or greater is
maintained by vehicle design and ensures compliance with the normal use of the
vehicle.
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