Hybrid battery equipment
Hybrid and electric vehicle battery reconditioning and cell balancing tools
|EVc-30 battery reconditioning unit connected in parallel to a 28-module Prius pack. One parallel connection does the job.|
Consumers pay over $2500 for replacement hybrid battery packs when the P0A80 code appears. Recondition packs in mass, remove their headaches and make a fortune! Process up to 120 hybrid battery packs a month with an EVc-120. Our hands-on battery reconditioning short course teaches anyone to recondition and balance a prismatic battery module with an EVc battery reconditioner. We simplified complex electronics for use by the every-man.
Battery reconditioning and cell balancing is a well understood process developed for NiCad batteries decades ago. NuVant simply reduced the electronic complexity, applied it to hybrid vehicle batteries, and now enable you to bring electrochemistry to the streets! The EVc units are for street shops (push one button after wire-up and the P0A80 code vanishes), for researchers (using high speed GITT and recipe editor) and for big picture outfits ready to service huge private and government fleets. Transit authority bus fleets managers are cancelling contracts to energy storage system providers because our system provides reliable battery storage at a fraction of the cost. A new Allison ESS bus battery is over $50K. Our 120 channel system will convert a 240 module core into a refurbished ESS units with about 12 hours of labor.
We ship world-wide! Over 100 EVc battery reconditioners operate in 13 countries / 6 continents!
The turnkey system includes:
- software configured laptop computer (USB connection to instrument)
- battery pack cooling box
- free software upgrades
For more information, click the following links:
|EVc-12 battery reconditioner||EVc-30 battery reconditioner||Evc-120 battery reconditioner|
|No. of Channels||12||30||120|
|Monthly Capability:||360 modules
(12 Prius packs)
(32 Prius packs)
(128 Prius packs)
|Lease with the option to buy available. Call for details.|
Equipment for hybrid vehicle battery reconditioning, repair and balancing
What is a hybrid battery module?
Modules are nickel metal hydride (NiMH) cells connected in series. NiMH cells have a nominal voltage of 1.2 V. A Ford Escape module has 5 cylindrical NiMH cells in series. A Toyota Prius module has 6 prismatic NiMH cells. A hybrid vehicle traction pack battery consists of modules configured in series. A Ford Escape has two 25-module traction packs. A Prius has a single 28-module pack.
|cells/module||module V||type||modules/pack||pack V|
|Ford Escape||5||6||cylinder||25||150 V|
What does “out of balance” mean?
The driving cycle of a hybrid vehicle subjects the battery pack to repeated shallow depths of discharge of less than 10% of the battery capacity. The unused capacity undergoes a correctable degradation process that reduces battery capacity. This failure process (i.e., module-to-module variation of amp-hour (Ah) capacity) is referred to as an “out of balance” pack. The modules have a memory of the small capacity demanded, thus resulting in the term “memory effect”.
What is battery cell balancing?
Reconditioning recovers lost capacity. When reconditioned modules are sorted and positioned for optimum performance, the battery pack is balanced. The steps are:
1 Extract the hybrid battery pack from the vehicle
2 Remove the high voltage cable
3 Connect modules in parallel to the EVc-30 (see photo above)
4 Press the start button.
The output report:
a identifies high resistance modules (e.g., > 10 mΩ for a 6-cell module).
b enables sorting and selecting of modules for pack assembly based on amp-hour or watt-hour capacity.
c pairs up modules into blocks based on module rest voltage.
d archives all data for your warranty management program.
The equipment is pricey, but the use of the equipment is simple!
What tools are required for hybrid battery reconditioning and repair?
The required tools are (1) a menu driven charge discharge cycler, (2) software for analysis of amp-hour capacity and midpoint voltage data on every module maintained in inventory, (3) a QR code reader and (4) a 50 inch-pound torque limited nut driver.
Hybrid battery repair tool: EVc-30
Includes EVc unit, training and EVc software (EVcharge). EVcharge imports module state-of-health data from the EVc-30.
How long does it take to recondition a hybrid battery pack?
High quality cell balancing requires a minimum of 20 hours instrument time. NiMH modules have system parameters specific to the form factor (e.g., prismatic versus cylindrical) and number of cells in series (e.g., Ford Escape: 5; Prius prismatic: 6; etc.). These parameters govern the choice of recipe parameters. Balancing recipes and their automated implementation are covered in the NuVant battery reconditioning course. The business model is to build up an inventory of reconditioned modules for replacement of customer packs and recovery of a core from the customer.
What cell balancing data does the EVc archive as Excel files?
The EVc provides internal resistance, amp-hour, watt-hour capacity and real-world nominal voltages for every module. The chart below is a real time display of module parameters during the cell balancing process.
Example EVc output files for popular traction battery packs are shown below.
Toyota Highlander (click on figures to expand)
Ford Escape (click on figures to expand)
Toyota Prius (click on figure to expand)
How do I learn more about hybrid battery repair prior to purchasing an EVc?
The hands-on hybrid electric vehicle battery reconditioning short course allows participants to connect Prius pack modules to an EVc reconditioning unit for cell balancing. During the reconditioning process, the terminology required for understanding cell balancing will be thoroughly explained. On the second day, results of the overnight process are thoroughly discussed along with data processing.
|Max Load Voltage||10 V/channel (Customized up to 20V)|
|Max Load Current||5A per channel|
|Number of channels||10, 30 or 40 channel systems|
|Applied Current Accuracy||0.5% of the Applied Current|
|Applied Current Resolution||.3 mA|
|Measured DC Potential Ranges||10 V/channel (Customized up to 20V)|
|Accuracy||0.08 or 0.03% of FSR|
|Current Interrupt Resistance|
|Data Acquisition Speed||12.5 kS/s|
|Serial Resistance Precision||0.5 %|
|Measurement logging time||1 second|
What if I need additional training after an EVc purchase?
New owners of EVc reconditioning equipment receive a complementary 5-hour EZtime ticket. This complementary on-line (TeamViewer) training provides sufficient time for remote reconditioning of your first 2 packs simultaneous with the suggested training agenda.
- On-line training provided after customer receives purchased EVc unit. Training includes:
- Unpacking and set-up of EVc unit.
- Connections to prismatic or cylindrical modules
- Use of EVc to identify high resistance modules
- Module reconditioning
- BRIMS package for business management.
- Additional 5-hour EZtime tickets can be purchased for $450.
Call 219-644-3231 for more details!
For zero down payment alternate to the NuVant financing plan, consider Crest Capital Financing for US buyers.
For USA Financing: Crest Capital Financing