'Engineers of Innovation Wiki' - User contributions [en]

Battery

2022-10-01T08:06:16Z

Wkooij: /* Open questions */

This page contains the information about the EoI battery development, everything from the requirements to the implementation can be found here.

== What is the battery? ==
The battery is the energy buffer of the boat, it stores the energy coming in from the solar panels and provides a constant voltage for the motor path and peripheral electronics. The battery consists of multiple parts:

* Battery cells
* Battery management system (BMS)

The BMS makes sure that the battery cells can't be overcharged or over-discharged, as this might damage them and present dangerous situations. Besides monitoring the voltage a BMS usually monitors the current and temperature as well.

== Technical regulations (as per September 2022) ==

* Maximum nominal voltage: 58,8V (14S lithium-ion)
* Maximum capacity: 1,5 kWh (= 5400 MJ)
* All battery cells must be commercially available
* The BMS must monitor the battery voltage and current
* The BMS must be capable of shutting down the system
* The BMS must be able to monitor charge and discharge currents
* The BMS must have a means to limit over-current in charge and discharge paths
* The BMS must monitor all individual cells
* All electrical systems must be provided with a fuse in series connection with the main battery ('Main fuse')
* The battery must be fused
* The BMS must be fused

== Specifications ==
{| class="wikitable"
|+Functional requirements
!ID
!Specifiction
!Value
!Pass/Fail
|-
|
|Nominal pack voltage
|<code><= 58,8V</code>
|
|-
|
|Maximum capacity
|<code>1,5 kWh</code>
|
|-
|
|Monitor (pack) voltage
|
|
|-
|
|Monitor (pack) current
|
|
|-
|
|Monitor (pack) temperature
|>> 1 sensor (8)
|
|-
|
|Limit overcurrent in (dis)charge path
|
|
|-
|
|Capable of shutting down the whole system
|
|
|-
|
|CAN-bus communication
|<code>5V / 1 Mbit</code>
|
|-
|
|Internal cell balancing
|
|
|-
|
|Charge and discharge paths can be operated simultaneously
|
|
|-
|
|Motor and MPPT should be enabled independently
|
|
|-
|
|The battery should be enabled with a N.O. contact
|open = off
closed = on
|
|-
|
|Separate enable contact for Motor path (output) (Optional: Software disable only)
|
|
|-
|
|Battery should be fully disabled (all outputs disabled) by emergency switch
|
|
|-
|
|Shelve life (Save battery mode)
|>= 1 year (<code>2.8mA max</code>)
|
|-
|
|Humidity sensor
|
|
|-
|
|Galvanic separation of safety path (bilge and horn)
|
|
|-
|
|(Optional) I.M.U.
|
|
|-
|
|(Optional) Phase change cooling hardware
|
|
|}
{| class="wikitable"
|+Electrical requirements
!ID
!Specification
!Value
!Pass/Fail
|-
|0
|Motor path (output)
|<code>60V / 300A</code>
|
|-
|1
|Charge path (input)
|<code>60V / 50A</code>
|
|-
|2
|Peri path (output)
|<code>24V / 2.5A</code>
|
|-
|3
|Safety path (output) (bilge and horn)
|<code>24V / 4A</code>
|
|}
{| class="wikitable"
|+Environmental requirements
!ID
!Specification
!Value
!Pass/Fail
|-
|0
|Ambient operating temperature
|0 - 50 °C
|
|-
|1
|Ingress protection
|IP67 or better
|
|}

== Open questions ==

* Do the MPPTs have to be modified for the 14S battery?
*Integrated or seperate charge/discharge paths? (I've got a slight preference for seperate pcb's)

Battery

2022-09-26T06:14:21Z

Wkooij: /* Open questions */

This page contains the information about the EoI battery development, everything from the requirements to the implementation can be found here.

== What is the battery? ==
The battery is the energy buffer of the boat, it stores the energy coming in from the solar panels and provides a constant voltage for the motor path and peripheral electronics. The battery consists of multiple parts:

* Battery cells
* Battery management system (BMS)

The BMS makes sure that the battery cells can't be overcharged or over-discharged, as this might damage them and present dangerous situations. Besides monitoring the voltage a BMS usually monitors the current and temperature as well.

== Technical regulations (as per September 2022) ==

* Maximum nominal voltage: 58,8V (14S lithium-ion)
* Maximum capacity: 1,5 kWh (= 5400 MJ)
* All battery cells must be commercially available
* The BMS must monitor the battery voltage and current
* The BMS must be capable of shutting down the system
* The BMS must be able to monitor charge and discharge currents
* The BMS must have a means to limit over-current in charge and discharge paths
* The BMS must monitor all individual cells
* All electrical systems must be provided with a fuse in series connection with the main battery ('Main fuse')
* The battery must be fused
* The BMS must be fused

== Specifications ==
{| class="wikitable"
|+Functional requirements
!ID
!Specifiction
!Value
!Pass/Fail
|-
|
|Nominal pack voltage
|<= 58,8V
|
|-
|
|Maximum capacity
|1,5 kWh
|
|-
|
|Monitor (pack) voltage
|
|
|-
|
|Monitor (pack) current
|
|
|-
|
|Monitor (pack) temperature
|
|
|-
|
|Limit overcurrent in (dis)charge path
|
|
|-
|
|Capable of shutting down the whole system
|
|
|-
|
|CAN-bus communication
|5V / 1 Mbit
|
|-
|
|Internal cell balancing
|
|
|-
|
|Charge and discharge paths can be operated simultaneously
|
|
|-
|
|Motor and MPPT should be enabled independently of the battery and eachother
|
|
|-
|
|The battery should be enabled with a N.O. contact
|open = off
closed = on
|
|}
{| class="wikitable"
|+Electrical requirements
!ID
!Specification
!Value
!Pass/Fail
|-
|0
|Motor path (output)
|60V / 250A
|
|-
|1
|Charge path (input)
|60V / 50A
|
|-
|2
|Peri path (output)
|24V / 2.5A
|
|}
{| class="wikitable"
|+Environmental requirements
!ID
!Specification
!Value
!Pass/Fail
|-
|0
|Ambient operating temperature
|0 - 50 °C
|
|-
|1
|Ingress protection
|IP67 or better
|
|}

== Open questions ==

* Do the MPPTs have to be modified for the 14S battery?
*Integrated or seperate charge/discharge paths? (I've got a slight preference for seperate pcb's)
*Seperate peri output for safety critical devices (bilge, horn)

Battery

2022-09-23T09:10:28Z

Wkooij: /* Open questions */

This page contains the information about the EoI battery development, everything from the requirements to the implementation can be found here.

== What is the battery? ==
The battery is the energy buffer of the boat, it stores the energy coming in from the solar panels and provides a constant voltage for the motor path and peripheral electronics. The battery consists of multiple parts:

* Battery cells
* Battery management system (BMS)

The BMS makes sure that the battery cells can't be overcharged or over-discharged, as this might damage them and present dangerous situations. Besides monitoring the voltage a BMS usually monitors the current and temperature as well.

== Technical regulations (as per September 2022) ==

* Maximum nominal voltage: 58,8V (14S lithium-ion)
* Maximum capacity: 1,5 kWh (= 5400 MJ)
* All battery cells must be commercially available
* The BMS must monitor the battery voltage and current
* The BMS must be capable of shutting down the system
* The BMS must be able to monitor charge and discharge currents
* The BMS must have a means to limit over-current in charge and discharge paths
* The BMS must monitor all individual cells
* All electrical systems must be provided with a fuse in series connection with the main battery ('Main fuse')
* The battery must be fused
* The BMS must be fused

== Specifications ==
{| class="wikitable"
|+Functional requirements
!ID
!Specifiction
!Value
!Pass/Fail
|-
|
|Nominal pack voltage
|<= 58,8V
|
|-
|
|Maximum capacity
|1,5 kWh
|
|-
|
|Monitor (pack) voltage
|
|
|-
|
|Monitor (pack) current
|
|
|-
|
|Monitor (pack) temperature
|
|
|-
|
|Limit overcurrent in (dis)charge path
|
|
|-
|
|Capable of shutting down the whole system
|
|
|-
|
|CAN-bus communication
|5V / 1 Mbit
|
|-
|
|Internal cell balancing
|
|
|-
|
|Charge and discharge paths can be operated simultaneously
|
|
|-
|
|Motor and MPPT should be enabled independently of the battery and eachother
|
|
|-
|
|The battery should be enabled with a N.O. contact
|open = off
closed = on
|
|}
{| class="wikitable"
|+Electrical requirements
!ID
!Specification
!Value
!Pass/Fail
|-
|0
|Motor path (output)
|60V / 250A
|
|-
|1
|Charge path (input)
|60V / 50A
|
|-
|2
|Peri path (output)
|24V / 2.5A
|
|}
{| class="wikitable"
|+Environmental requirements
!ID
!Specification
!Value
!Pass/Fail
|-
|0
|Ambient operating temperature
|0 - 50 °C
|
|-
|1
|Ingress protection
|IP67 or better
|
|}

== Open questions ==

* Do the MPPTs have to be modified for the 14S battery?
*Integrated or seperate charge/discharge paths? (I've got a slight preference for seperate pcb's)

Battery

2022-09-21T06:19:58Z

Wkooij: add outstanding question

This page contains the information about the EoI battery development, everything from the requirements to the implementation can be found here.

== What is the battery? ==
The battery is the energy buffer of the boat, it stores the energy coming in from the solar panels and provides a constant voltage for the motor path and peripheral electronics. The battery consists of multiple parts:

* Battery cells
* Battery management system (BMS)

The BMS makes sure that the battery cells can't be overcharged or overdisharged, as this might damage them and present dangerous situations. Besides monitoring the voltage a BMS usually monitors the current and temperature as well.

== Technical regulations (as per september 2022) ==

* Maximum nominal voltage: 58,8V (14S lithium-ion)
* Maximum capacity: 1500 kWh (= 5400 MJ)
* All battery cells must be commercialy available
* The BMS must monitor the battery voltage and current
* The BMS must be capable of shutting down the system
* The BMS must be able to monitor charge and discharge currents
* The BMS must have a means to limit overcurrent in charge and discharge paths
* The BMS must monitor all individual cells
* All electrical systems must be provided with a fuse in series connection with the main battery ('Main fuse')
* The battery must be fused
* The BMS must be fused

== Specifications ==
{| class="wikitable"
|+Functional requirements
!ID
!Specifiction
!Value
!Pass/Fail
|-
|
|Nominal pack voltage
|<= 58,8V
|
|-
|
|Maximum capacity
|1500 kWh
|
|-
|
|Monitor (pack) voltage
|
|
|-
|
|Monitor (pack) current
|
|
|-
|
|Monitor (pack) temperature
|
|
|-
|
|Limit overcurrent in (dis)charge path
|
|
|-
|
|Capable of shutting down the whole system
|
|
|-
|
|CAN-bus communication
|5V / 1 Mbit
|
|-
|
|Internal cell balancing
|
|
|-
|
|Charge and discharge paths can be operated simultaneously
|
|
|-
|
|Motor and MPPT should be enabled independently of the battery and eachother
|
|
|-
|
|The battery should be enabled with a N.O. contact
|open = off
closed = on
|
|}
{| class="wikitable"
|+Electrical requirements
!ID
!Specification
!Value
!Pass/Fail
|-
|0
|Motor path (output)
|60V / 250A
|
|-
|1
|Charge path (input)
|60V / 50A
|
|-
|2
|Peri path (output)
|24V / 2.5A
|
|}
{| class="wikitable"
|+Environmental requirements
!ID
!Specification
!Value
!Pass/Fail
|-
|0
|Ambient operating temperature
|0 - 50 °C
|
|-
|1
|Ingress protection
|IP67 or better
|
|}

== Open questions ==

* Do the MPPTs have to be modified for the 14S battery?

MPPT

2022-09-20T21:11:08Z

Wkooij: added an introduction to MPPTs

The Maximum Power Point Trackers (MPPT) are the abdomens of the SolarBoat (BoII) that gives the battery juice from the solar panels.

The MPPTs are self made, where the hardware can be found on the altium365 [https://engineers-of-innovation.365.altium.com workspace] and the software on [https://git.engineersofinnovation.nl/boat-fw/mppt-software Git].

== What is a MPPT? ==
A MPPT (Maximum Power Point Tracker) is a device that ensures that a solar panel is used at the most efficient point of its I-V curve. The I-V curve of a solar panel can be redrawn into an P-V curve by summing the voltage and current, resulting in the voltage at which the panel generates the most power. Because the output of the MPPT is connected to a battery (which is a very constant voltage source) any adjustments in the dutycycle of the MPPT influence the voltage over the solar panel, making it possible to steer the panel towards its maximum power point.

== PCBs ==
[[File:MPPT layout on deck.png|thumb|570x570px|Deck layout with corresponding MPPTs ID per panel.]]
There are probably 8 MPPT PCBs in total. Where 4 are used in the current SolarBoat. The picture on the right shows the layout of the solar panels with the corresponding MPPTs.

Battery

2022-09-20T19:18:16Z

Wkooij: /* Specifications */

This page contains the information about the EoI battery development, everything from the requirements to the implementation can be found here.

== What is the battery? ==
The battery is the energy buffer of the boat, it stores the energy coming in from the solar panels and provides a constant voltage for the motor path and peripheral electronics. The battery consists of multiple parts:

* Battery cells
* Battery management system (BMS)

The BMS makes sure that the battery cells can't be overcharged or overdisharged, as this might damage them and present dangerous situations. Besides monitoring the voltage a BMS usually monitors the current and temperature as well.

== Technical regulations (as per september 2022) ==

* Maximum nominal voltage: 58,8V (14S lithium-ion)
* Maximum capacity: 1500 kWh (= 5400 MJ)
* All battery cells must be commercialy available
* The BMS must monitor the battery voltage and current
* The BMS must be capable of shutting down the system
* The BMS must be able to monitor charge and discharge currents
* The BMS must have a means to limit overcurrent in charge and discharge paths
* The BMS must monitor all individual cells
* All electrical systems must be provided with a fuse in series connection with the main battery ('Main fuse')
* The battery must be fused
* The BMS must be fused

== Specifications ==
{| class="wikitable"
|+Functional requirements
!ID
!Specifiction
!Value
!Pass/Fail
|-
|
|Nominal pack voltage
|<= 58,8V
|
|-
|
|Maximum capacity
|1500 kWh
|
|-
|
|Monitor (pack) voltage
|
|
|-
|
|Monitor (pack) current
|
|
|-
|
|Monitor (pack) temperature
|
|
|-
|
|Limit overcurrent in (dis)charge path
|
|
|-
|
|Capable of shutting down the whole system
|
|
|-
|
|CAN-bus communication
|5V / 1 Mbit
|
|-
|
|Internal cell balancing
|
|
|-
|
|Charge and discharge paths can be operated simultaneously
|
|
|-
|
|Motor and MPPT should be enabled independently of the battery and eachother
|
|
|-
|
|The battery should be enabled with a N.O. contact
|open = off
closed = on
|
|}
{| class="wikitable"
|+Electrical requirements
!ID
!Specification
!Value
!Pass/Fail
|-
|0
|Motor path (output)
|60V / 250A
|
|-
|1
|Charge path (input)
|60V / 50A
|
|-
|2
|Peri path (output)
|24V / 2.5A
|
|}
{| class="wikitable"
|+Environmental requirements
!ID
!Specification
!Value
!Pass/Fail
|-
|0
|Ambient operating temperature
|0 - 50 °C
|
|-
|1
|Ingress protection
|IP67 or better
|
|}

Battery

2022-09-20T18:44:26Z

Wkooij: dingen

Engineers of Innovation

2022-09-20T12:23:11Z

Wkooij: it is 365, not 360

Consult the [[mediawikiwiki:Special:MyLanguage/Help:Contents|User's Guide]] for information on using the wiki software.

== Getting started ==
To get started with Engineers of Innovation a couple of links are shown here:

* [https://engineersofinnovation.nl Our own website]
* [https://git.engineersofinnovation.nl Git]
* [https://engineers-of-innovation.365.altium.com/ Altium 365 workspace]

=== Wiki page getting started ===
The different programs that are used all have their respective wiki page for getting started on getting an account and how to access the workspaces. The pages are linked below for easy access:

* [[Altium|Getting started with Altium Designer]]
*[[Fusion 360|Getting started with Fusion 360]]
*[[GIT|Getting started with Git]]

== Projects ==
Different project pages are given here:

* [[Solar boat (boii)]]
*[[Datalogger]]
* [[Linux servers]]
* [[MPPT|MPPTs]]
* [[BLDC motordriver]]
* [[Battery]]
*[[Live data]]
*[[Foils]]
== Page syntax! ==
Before anyone can edit or add pages to the wiki. An account [[Special:RequestAccount|request]] need to be made.

For new users or users who just want to lookup what the syntax is, a '''[[Test]]''' page is created with general use cases.