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Lithiumate™ - Distributed Li-Ion BMS
Battery Management Systems for Lithium Ion batteries - overview
This state-of-the-art, versatile, Li-Ion Battery Management System (BMS), proven in actual use in vehicles around the US, is now made available to you.
This BMS will transform your pack from a simple collection of cells to a true smart battery.
Lithiumate brochure (pdf)
Three Cell Boards mounted on 26650 Li-Ion cells.
Note the lack of spaghetti: there is just a single wire (yellow) between cell boards.
This BMS allows you to be up and running with your battery pack very rapidly:
- Mature, field proven design
- Modular and scalable
- High level functionality customizable by you
The salient characteristics of the Li-Ion BMS are:
- Ideally matched to work in high power Li-Ion battery packs
- Up to 255 cells in series (~840 V), no limit to cells in parallel, isolated
- No limit to cells in parallel, up to 600 A (higher currents available)
- Includes a contactor drivers, a cooling fan interface and an interlock input
- Ideally matched to:
- Lithium-ion Polymer(LiPo)
- Standard lithium-cobalt-oxide (LiCoO2)
- Lithium-Manganese-Nickel-Cobalt (LiMnNiCo)
- Nano-phosphate / lithium-iron-phosphate / lithium-ferro-phosphate (LiFePO4)
- Lithium-manganese-oxide (LiMnO2)
- (Not compatible with lithium-titanate cells)
- Compatible with a a range of chargers, motor drivers, displays
- Optimized for automotive applications
- CAN bus, ignition line input, 12V power
- Performs monitoring, evaluation, communication, balancing and protection
- Monitors the voltage and temperature of each set of parallel cells, and the pack current
- Evaluates SOC (State Of Charge), DOD (Depth Of Discharge), and SOH (State Of Health)
- Calculates the pack's internal resistance
- Determines appropriate CCL (Charge Current Limit) and DCL (Discharge Current Limit)
- Detects any abnormal conditions and sets a fault accordingly
- Communicates through a serial port and through a CAN bus, reporting above data
- Balances the charge through dissipation of excessive energy in most charged cells
- Protects against over and under-voltage, over and under-temperature, over-current
- Optional HV Front End tests for loss of isolation and end of precharge current (using a precharge resistor, not supplied)
- Plug and play (for "mules" and proof-of-concept products)
- Lets you refine your product at your own convenience
- Distributed: electronic assemblies are mounted on cells
- Consists of: one or more Cell Boards and a BMS controller
- Mechanically matched with cylindrical, pouch or prismatic cells
- Minimal wiring (no "spaghetti"); individual cell voltage and temperature
- Controller communicates with Cell Boards on cells, and with external system
These are simplified specifications that may apply to a typical system.
Actual specifications depend on which components are used in a system.
Detailed specifications are in the manual
| Item
| Value
| Units
|
| Controller
|
| Supply voltage
| 12
| Vdc nom
|
| 12 V supply current
| 100
| mAdc max
|
| Control inputs' voltage
| 0 to 12
| Vdc nom
|
| Digital outputs' sink current
| 1.5
| Adc max
|
| Analog outputs' voltage
| 0 to 5
| Vdc
|
| RS232 rate
| 19200
| baud
|
| CAN rate
| 125, 250, 500 or 1000
| kHz
|
| Reading rate
| 0.1 to 1.5
| readings / s
|
| Number of cells monitored
| 1 to 255
| -
|
| Operating temperature
| -40 to +80
| °C
|
| Volume
| 0.8
| liters
|
| Current sensor
|
| Sensed battery current
| 5 to 600
| Adc
|
| Cell boards
|
| Cell voltage sensing range
| 2.09 to 4.54
| Vdc
|
| Cell voltage sensing accuracy
| +/-10
| mVdc
|
| Cellboard temperature sensing accuracy
| +/-2
| °C
|
| Cell current drain, standby
| 2.0
| uA max
|
| Cell current drain, operating
| 2
| mA max
|
| Cell current drain, balancing
| 200
| mA nom
|
| Battery isolation
| 2.5
| kV
|
- Automotive: EVs, HEVs, PHEVs
- Distributed resources: peak shavers
- Back-up systems: UPSs
- (Not available for military nor life-support applications.)
The BMS consists of:
- A BMS controller:
- A standard Controller, which may be:
- Optionally, a separate High Voltage Front End may be placed away from the controller
- A cable mounted Current sensor may be required in some applications
- A number of Cell Boards (one cell board for every set of cells that are conected directly in parallel), mounted on the cells and matched to their shape:
Elithion offers the following accessories to complement the standard BMS:
- There is a significant "volume compensating fee": US $ 1500 per order, plus US $ 1000 for the first order
- The prices of the cell boards depend on the number of cells in series: US $ 6 to 13 per cell in series
- The price of the BMS controller depends on features requested: US $ 240 to 416
- The BMS is very versatile, and handles most applications; custom features may be developed for a consulting charge
- Ground shipping included in the US
- Sales tax is added to product delivered in Colorado
- Prices are subject to modification without notice
- The following table gives estimated prices in US dollars.
No of
cells
in
series
|
| Number of systems per order
|
|
| 1
| 3
| 10
| 30
| 100
|
| 10
| 2943
| 1276
| 693
| 526
| 468
|
| 20
| 3015
| 1347
| 764
| 597
| 539
|
| 30
| 3086
| 1419
| 836
| 669
| 611
|
| 40
| 3158
| 1490
| 907
| 740
| 682
|
| 50
| 3229
| 1562
| 979
| 812
| 754
|
| 60
| 3301
| 1633
| 1050
| 883
| 825
|
| 70
| 3372
| 1705
| 1122
| 955
| 897
|
| 80
| 3443
| 1776
| 1193
| 1026
| 968
|
| 90
| 3515
| 1848
| 1265
| 1098
| 1040
|
| 100
| 3586
| 1919
| 1336
| 1169
| 1111
|
| 110
| 3658
| 1991
| 1408
| 1241
| 1183
|
| 120
| 3729
| 2062
| 1479
| 1312
| 1254
|
| 130
| 3801
| 2134
| 1551
| 1384
| 1326
|
| 140
| 3872
| 2205
| 1622
| 1455
| 1397
|
| 150
| 3944
| 2276
| 1693
| 1526
| 1468
|
| 160
| 4015
| 2348
| 1765
| 1598
| 1540
|
| 170
| 4086
| 2419
| 1836
| 1669
| 1611
|
| 180
| 4158
| 2491
| 1908
| 1741
| 1683
|
| 190
| 4229
| 2562
| 1979
| 1812
| 1754
|
| 200
| 4301
| 2634
| 2051
| 1884
| 1826
|
| 210
| 4372
| 2705
| 2122
| 1955
| 1897
|
| 220
| 4444
| 2777
| 2194
| 2027
| 1969
|
| 230
| 4515
| 2848
| 2265
| 2098
| 2040
|
| 240
| 4586
| 2920
| 2337
| 2170
| 2112
|
| 250
| 4658
| 2991
| 2408
| 2241
| 2183
|
Sale terms and conditions:
- Not available for life support or military applications
- Terms: payment due at time of shipment, unless other arrangements are made
- Available only to technically qualified customers
- Warranty: 1 year after shipment
Notes:
- As of Nov '09, typical delivery times are 30 days from date of order
- You may also buy Elithion products from these resellers
A demo system may be rented for evaluation.
BMS demo board. Click to enlarge.
Specifications:
- BMS controller
- Battery consisting of 12 26650 LiFePO4 cells, in a 6S2P arrangement
- Six cell boards mounted on cells, divided into 2 banks
- RS232-USB adapter
- Connector kits
Terms:
- Available to pre-qualified renters:
- Subject to successful appraisal of technical expertize of renter
- Subject to credit approval
- US only
- US$ 200 per rental, plus US$ 50 per week
- Paid support is available
- Three months max rental
- Manual
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Description
