Hybrid battery cooling mod

Regardless of their mailing address Inngr is in china

 

Not everything made in china is substandard, the issue would be whether the product abides by US standards for safety.

 

The previous supplier got them from china as well. Odds are good its the same product with a different interface.

 

The casing looks the same as the one you are mentioning so odds are there are some shared physical components with a linked BMS. Auto balancing seems like a nice feature, however its all for nothing if we dont have specs on safety features...or worse the lack thereof.

I was real close to purchasing a pack, but im waiting until I have some definitive evidence these have a proper BMS. I doubt the supplier will send a demo but its worth a shot. I could see them doing a demo if I was California local but Im on the other side of the US...

 

It has to be a custom interface for every brand and then it needs extensive testing in the real world.

You only have one life to live and in this area its not worth the very real risk to you, your passengers and others sharing the road with you.

If you want more power and mpge buy a modern plugin.

 

Jack's Sodium Ion pack is proven. And safe.

 

Hot day today

 

Please reply with any specific questions so I can ask. From their responses I can deduce it just mimics the cell voltages but with lithium chemistry. Im not sure how to pose the questions.

 

Direct quote from INNRG POWER Solutions:

1. Cell Balancing (Voltage Equalization)
The most critical task of the circuitry during charging is balancing. Lithium-ion cells are sensitive to voltage variations; if one cell reaches a high state of charge (SoC) before the others, it risks over-voltage damage.
Passive Balancing: The circuitry uses shunt resistors to dissipate excess energy from fully charged cells as heat, allowing the lagging cells to "catch up" during the final phase of the charging cycle.

Active Balancing: More advanced systems redistribute energy from higher-voltage cells to lower-voltage cells, which is significantly more efficient and maintains better pack health over time.

2. The Protective "Guardrails" (OVP/UVP)

The circuitry acts as an independent safety layer that sits between the vehicle's main power systems and the lithium cells.

Over-Voltage Protection (OVP): If the charging current causes any individual cell to exceed its maximum safety threshold, the BMS immediately triggers a disconnect (often via high-amperage MOSFETs or contactors) to stop the current flow, regardless of what the vehicle's main computer requests.

Under-Voltage Protection (UVP): Conversely, during discharge, the circuit prevents cells from dropping below a critical voltage, which would permanently damage the lithium chemistry.

3. Thermal Management Integration

Lithium-ion batteries are more sensitive to temperature fluctuations than NiMH. The circuitry monitors integrated NTC (Negative Temperature Coefficient) thermistors placed throughout the module assembly.

Dynamic Throttling: If the internal temperature sensors detect a rise beyond safe limits during a charge cycle, the BMS communicates with the charging source to throttle (reduce) the charge current.

Emergency Interruption: If temperatures spike into a critical range, the circuitry completely terminates the charge/discharge path to prevent thermal runaway.

4. The "Translator" (ECU Handshake)
Since the vehicle's factory computer (the ECU or hybrid battery control module) expects NiMH voltage curves, your circuitry must act as a translator.

Data Emulation: The BMS circuitry monitors the actual state of the lithium cells and "translates" that data into signals the car’s ECU expects to see.

Managed Charging: It ensures the car’s regenerative braking or wall-charging logic never forces the lithium cells into an unsafe state by feeding the ECU calibrated data that keeps the system within the safe operating parameters of the spe


UPDATE: There appears to be more to the message...I will edit this to add the rest as it trickles in.

 

That message looks for the life of me as if they have sent you an AI summary of what a good BMS ought to do.

What I would be hungry for would be evidence that what they have actually built is a good BMS, and does that.

 

My thoughts were exactly the same, regurgitated AI summary...

It appears it just interfaces with the NiMH BMS to manage the lithium packs, in the manner he just spoke of. I appreciate everyones input, i really do. I told him I would probe him later as he was with his family. Seeing that he obliged to talk with me during his off time tells me he's a nice guy. I'll finish the conversation later this next week.