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66 changes: 66 additions & 0 deletions src/site/notes/Car Architecture.md
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🚧UNDER CONSTRUCTION [[General/How to contribute to the megathread\|You Can Help!]]🚧
# Mechanical
Our vehicle is a single motor + differential car. Many other teams have more sophisticated drivetrains, including setups with hub motors, which allow you to eliminate all spinning shafts inboard of the wheels.
We have stuck with the traditional single motor + differential setup for simplicity.
🚧I need help for this🚧
# Electrical
>[!Warning] For most up to date information, check the [draw.io](https://app.diagrams.net/#G1aAUkTBznf-oBW0_HJwPR886YPGE_Ngbq#%7B%22pageId%22%3A%22AH0zOfJDxDtdpztpxlL7%22%7D)
### Overview
🚧draw.io output and generals🚧

---
### Shutdown Circuit
The shutdown circuit (Described in [[General/FSAE 2025 Rules\|EV.7.2]]) is a safety mechanism which serves to disconnect the [[General/Team Terminology#Tractive System (TS)\|Tractive System]] either automatically or manually. This is done through a series of switches and [[General/Team Terminology#Interlocks\|interlocks]] which can break power supply to the [[General/Team Terminology#Isolation Relays (IR)\|IR'S]] thus isolating the Tractive System from the outside world to protect us from the high voltage. For specifics on the wiring, see the drawing below.

![](https://i.imgur.com/7lUzD3D.png)

---
### CAN (Controller Area Network)
CAN is a rugged information bus protocol that allows many devices to communicate with one another over a limited number of wires (two per bus). On NFR25 we have two separate CAN busses. This means that devices can only communicate with other devices on the same bus (unless they use another device which is on both busses as an intermediary). Our two CAN busses are called *DATA* and **DRIVE** CAN. *DATA* is (as the name suggests) intended for purely data acquisition purposes and is not [[General/Team Terminology#Drive Critical\|drive critical]]. **DRIVE** contains information directly related to controlling the driving of the car and is drive critical. There are two buses to reduce the [[General/Team Terminology#Bus Load\|bus load]] of any one bus which is intended to make the car's communication network more robust.

>[!note] For more low level information on how CAN actually works, refer to [this article on DigiKey](https://forum.digikey.com/t/overview-of-the-can-bus-protocol/21170)
The drawing below denotes which devices are connected to which CAN busses, arranged as to approximate location within the car.

![](https://i.imgur.com/WLkDqtt.png)

---
### Battery Structure
#### Accumulator
🚧 *overview text* 🚧
The [[General/Team Terminology#Accumulator\|Accumulator]] is the high voltage battery which supplies the power that drives our motor. It is important to exercise caution when handling the Accumulator
###### Full Pack Electrical Structure

| Cells | Configuration | Max Voltage | Nominal Voltage | Capacity | Fused Current |
| ------------ | ----------------------------------- | ----------- | --------------- | -------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Molicel p45b | 5 Series Segments *see table below* | 588 V | 504 V | 🚧 | 80 A<br>[Fuse](https://www.mouser.com/ProductDetail/Littelfuse/L75QS080.V?qs=w%2Fv1CP2dgqquMmGcdv%252B%252BVQ%3D%3D)<br>[Datasheet](https://www.littelfuse.com/~/media/electrical/datasheets/fuses/semiconductor-fuses/littelfuse-industrial-l75qs-fuse-datasheet.pdf) |
###### Single Segment Electrical Structure

| Cells | Configuration | Max Voltage | Nominal Voltage | Capacity | Fused Current |
| ------------ | ---------------------------------------------------------------- | ----------- | --------------- | -------- | ------------- |
| Molicel p45b | [[General/Team Terminology#Battery Pack Configuration Shorthand\|28s3p]] | 117.6 V | 100.8 V | 🚧 | 80 A |

#### Low Voltage (LV) Battery
The [[Electrical/Power Distribution/LV Battery/LV Battery\|LV Battery]] powers everything other than the [[General/Team Terminology#Tractive System (TS)\|Tractive System]]. It's located in the [[Car Architecture#LV Box\|#LV Box]]. The mechanical structure is designed by the [[Mechanical/Accumulator/Accumulator Home\|Accumulator Subteam]] and the electrical structure is designed by the [[Electrical/Power Distribution/Power Distribution Home\|Power Distribution Subteam]].
###### Electrical Structure

| Cells | Configuration | Max Voltage | Nominal Voltage | Capacity | Fused Current |
| ------------ | --------------------------------------------------------------- | ----------- | --------------- | -------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Molicel p42a | [[General/Team Terminology#Battery Pack Configuration Shorthand\|6s3p]] | 25.2 V | 21.6 V | 12.6 Ah | 40 A<br>[Fuse](https://www.amazon.com/Chanzon-50Pcs-Listed-Standard-Automotive/dp/B0CYP881ZL?crid=KOYM53VK3BJI&dib=eyJ2IjoiMSJ9.kAud1lwfnSJMHH_HHJksJ3AayT8HQIqm2DRrKdBcHMnv_5H38w8UA5qC38SW-9TZeDXUhWiUH5apFWH5WxkjyAqGwauFDSRfrqBKFBpEtEMMDnBAl-fw4ZHpuBtrKXKUkab2x4VEEME3K_TacMuT8-gI3TrKF94495g-FLnbpBmou8O6N8UpJYpcsO5qqdaKDeMduAyfolulBSMIC2Yjs8qKYCl8mqNGbtF5UdIVvy0.ofn3doJM6QnXEOKwYIaudk923TirJMeK_C6ZZ_5s2C0&dib_tag=se&keywords=40%2Bamp%2Batc%2Bfuse&qid=1721963859&sprefix=40%2Bamp%2Batc%2Bfus%2Caps%2C117&sr=8-4&th=1) |

---
### Power Distribution
All [[General/Team Terminology#Grounded Low Voltage (GLV)\|GLV]] power is supplied by the [[Car Architecture#Low Voltage (LV) Battery\|LV Battery]]

---
### Enclosures
#### Dashbox
#### LV Box
#### Accumulator
#### Penthouse
#### Inverter
#### Backbox
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# About:

# Project List
- [[Electrical/BMS/Voltage Indicator Board (VIB)\|Voltage Indicator Board (VIB)]]
-
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### Members in Charge
- [Rohit Seshadri](https://nufsae.slack.com/team/U07PHFW7HS7)
- [Jason Lin](https://nufsae.slack.com/team/U07P336CXN3)
### Project Information
2 changes: 1 addition & 1 deletion src/site/notes/Electrical/General Electrical Home.md
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## [[General/Car Architecture#Electrical\|Electrical Architecture]]
## [[Car Architecture#Electrical\|Electrical Architecture]]
## [CAN DBC](https://nfr-learn.ue.r.appspot.com/can)
## Informational Guides
- [[Electrical/General Electrical/Altium Onboarding Guide\|Altium Onboarding Guide]]
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4 changes: 2 additions & 2 deletions src/site/notes/General/Team Terminology.md
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Expand Up @@ -10,7 +10,7 @@ By **EV.1.2**: "Every electrical part that is not part of the Tractive System" M
##### Accumulator
By **EV.1.3**: "All the battery cells or super capacitors that store the electrical energy to be used by the Tractive System" More rules found in **EV.5.1**
##### Penthouse
This is an internal term which describes the upper portion of our Accumulator container. We make this distinction as the [[General/Car Architecture#Penthouse\|penthouse]] contains the logic portion of the Accumulator, whereas we refer to the portion which contains the battery cells as simply the Accumulator. ==*By rules the penthouse is indistinguishable from the Accumulator*==
This is an internal term which describes the upper portion of our Accumulator container. We make this distinction as the [[Car Architecture#Penthouse\|penthouse]] contains the logic portion of the Accumulator, whereas we refer to the portion which contains the battery cells as simply the Accumulator. ==*By rules the penthouse is indistinguishable from the Accumulator*==
##### Energy Meter
Described in **EV.3.2**: Measures power and voltage of the accumulator to ensure [[General/FSAE 2025 Rules\|rules]] compliance to **EV.3.3**
##### Motor Controller / Inverter
Expand All @@ -26,7 +26,7 @@ Described by **EV.5.4**: Normally open relays which disconnect the two poles of
##### Manual Service Disconnect (MSD)
By **EV.5.5** "A Manual Service Disconnect (MSD) must be included to quickly disconnect one or the two poles of the Accumulator **EV.11.3.2**"
##### Shutdown Circuit
The shutdown circuit (Described in [[General/FSAE 2025 Rules\|EV.7.2]]) is a safety mechanism which serves to disconnect the [[General/Team Terminology#Tractive System (TS)\|Tractive System]] either automatically or manually. This is done through a series of switches and [[General/Team Terminology#Interlocks\|interlocks]] which can break power supply to the [[General/Team Terminology#Isolation Relays (IR)\|IR'S]] thus isolating the Tractive System from the outside world to protect us from the high voltage. For specifics on the wiring, see the [[General/Car Architecture#Shutdown Circuit\|car architecture]].
The shutdown circuit (Described in [[General/FSAE 2025 Rules\|EV.7.2]]) is a safety mechanism which serves to disconnect the [[General/Team Terminology#Tractive System (TS)\|Tractive System]] either automatically or manually. This is done through a series of switches and [[General/Team Terminology#Interlocks\|interlocks]] which can break power supply to the [[General/Team Terminology#Isolation Relays (IR)\|IR'S]] thus isolating the Tractive System from the outside world to protect us from the high voltage. For specifics on the wiring, see the [[Car Architecture#Shutdown Circuit\|car architecture]].
##### Interlocks
Described in **EV.7.8**: Interlocks are wires or connections which when unplugged open the shutdown circuit. Think of it like a safety switch which detects whether or not a plug is plugged in. They are required on the [[General/Team Terminology#Manual Service Disconnect (MSD)\|MSD]] and on any [[General/Team Terminology#Tractive System (TS)\|TS]] connector outside of a housing (including those that are mounted on a housing)

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🚧UNDER CONSTRUCTION [[General/How to contribute to the megathread\|You Can Help!]]🚧

## [[General/Car Architecture#Mechanical\|Mechanical Architecture]]
## [[Car Architecture#Mechanical\|Mechanical Architecture]]
## Informational Guides
- [[General/UTM (Free Windows Emulator) Setup Guide\|UTM (Free Windows Emulator) Setup Guide]]
## Full Project List
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2 changes: 1 addition & 1 deletion src/site/notes/Welcome!.md
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## Quick Links
- [[Electrical/General Electrical Home\|General Electrical Home]]
- [[Mechanical/General Mechanical/General Mechanical Home\|General Mechanical Home]]
- ***[[General/Car Architecture\|Car Architecture]]***
- ***[[Car Architecture\|Car Architecture]]***
- [[General/FSAE 2025 Rules\|FSAE 2025 Rules]]
- [CAN DBC](https://nfr-learn.ue.r.appspot.com/can)
- [[General/How to contribute to the megathread\|How to contribute to the megathread]]
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