Amprius SA124 Li-ion Battery Module

ENEPAQ’S NEW AMPRIUS SA124 BATTERY MODULE

Enepaq’s innovative Amprius SA124 Li-ion Battery Modules, built with high-performance Amprius SA124 Li-ion Battery cells, offer the perfect combination of lightweight design, high power output, exceptional quality, built-in safety features, and ease of use.

Each module contains several 3.60V 21700 Li-ion cells connected in parallel. Multiple blocks can be connected in parallel and series to form high voltage Battery Packs of various shapes and sizes.

ENEPAQ AMPRIUS SA124 LI-ION BATTERY MODULES: ENGINEERED FOR EFFICIENCY

While cylindrical cells offer superior quality and safety, Enepaq recognizes the challenges they pose for large battery pack assembly. That’s why Enepaq battery modules are specifically designed to address these issues:

• Modular Design: Enepaq modules integrate cylindrical cells within a pre-engineered format, eliminating the need for custom trays and simplifying battery pack design.
• Simplified Connections: Enepaq modules are specifically designed for easy connections. No engineering expertise is required! Simply assemble them using busbars and bolt kits – no welding or additional wiring necessary.
• Scalable and Efficient Assembly: Enepaq modules allow for faster and more efficient assembly of large battery packs due to their pre-configured format and simplified connections.
• Specific design based on air cooling: Enepaq battery modules utilize strategically placed air gaps within the housing to facilitate superior thermal management. This innovative design leverages air circulation to effectively dissipate heat generated by the battery cells, maintaining optimal operating temperatures for the entire pack.
• Integrated temperature sensors: Enepaq modules are with JST 2 pin-XH connection on each module (you can connect the modules with the custom-made device, that can read module temp data and provide it to your BMS unit). Note: The temperature sensor is an option and is not available on 1x1p modules. 
• Fuse Control: Protects cells from overload and potential fire.

By incorporating high-quality cylindrical cells within a well-designed module, Enepaq offers a solution that leverages the benefits of cylindrical cells while mitigating the challenges associated with their integration.

Amprius SA124Li-ion Battery Module Product Characteristics

1x Series 

Dimensions and weight

1x Series

Weights are without fasteners. Length tolerance ±0.6 mm. 

TECHNICAL DETAILS:

• Sensor Type: Temperature-variable voltage shunt reference
• Signal Output: Non-linear (internally compensated for -40°C to +120°C operating range)
• Conversion Values: Provided in Table 2 for easy reference (refer to datasheet)
• Additional Calculations: Linear interpolation can be used for further value determination

Enepaq battery modules integrated temperature sensor is designed to be galvanically isolated from cell terminals, ensuring safe signal reading with a separate circuit. However, for convenience, a standard stack measurement IC, typically used for battery monitoring and balancing, can be employed. An example circuit utilizing the widely available LTC6803 IC is shown in Figure 6 (refer to datasheet).

MEASUREMENT PROCESS

To measure temperature:

1. Activate Balancing Switch: The balancing switch on the IC is activated.
2. Voltage Difference: The voltage difference between Cn+1 and Cn represents the temperature.
3. Current Flow: During measurement, the sensor current flows from the cell positive tab through a series resistor to the sensor, then to the internal balancing FET of the IC, and finally to the cell negative via another series resistor.
4. Resistor Configuration: Two 330Ω resistors form a total of 680Ω resistance for the sensor.

IMPORTANT CONSIDERATIONS

• Cell Voltage Measurement: When the switch is disabled, the cell voltage can be measured.
• Capacitor Addition: Exercise caution when adding capacitors for filtered measurement to avoid overcurrent conditions in the sensor.
• Balancing Switches: Adjacent balancing switches must not be enabled simultaneously to prevent overcurrent conditions.
• Measurement Cycles: If using this technique, conduct measurements in two cycles, alternating cells (e.g., cells 1, 3, and 5 in one cycle, then cells 2, 4, and 6 in the next).

RECOMMENDATIONS

• Separate ICs: It is recommended to use separate ICs for battery management and temperature measurement.
• Single IC Use: With careful engineering, a single IC can be used for cell voltage measurement, temperature measurement, and balancing. This can be achieved by bleeding the cells during temperature measurement, provided an additional bleed resistor and MOSFET are added.

By following these guidelines, the temperature sensor can be effectively integrated into the battery management system, ensuring accurate and reliable temperature monitoring.

(from 1:10 and 5:55 min about our batteries)

(from 4:20 min about our batteries)

(from 5:25 min about our batteries)

1. STORAGE CONDITIONS:

The module should be stored within the specified temperature range to maintain its performance:

• Temperature: 0 ∼ 23℃
• Humidity: Below 65%
• Environment: No dust or corrosive gas

Failure to adhere to these conditions may result in performance loss, leakage, and/or rust.

2. LONG-TERM STORAGE:

2.1 Voltage Requirements
For long-term storage (not exceeding the warranty period), the module should be stored at shipping voltage. Storing the module with a higher voltage can lead to significant performance loss.

2.2 Disconnection
Ensure all devices or components connected to the module clamps are disconnected to prevent current leakage.

2.3 Liability
Enepaq is not liable for any defects occurring after the warranty period, even if the module is stored according to the above guidelines.

3. WARRANTY

Enepaq warrants that the module will be free from manufacturing defects for 12 months from the shipping date (“Warranty Period”). In case of defects, Enepaq will replace the affected modules. However, the warranty does not cover:

3.1 Inspection Requirement
The buyer must inspect the goods immediately upon receipt. Any quality issues or discrepancies must be reported in writing within 7 days of receipt. Concealed defects must be reported within the warranty term but within 7 days of discovery.

3.2 Improper Handling
The warranty is void if the module has been improperly installed, repaired, altered, or modified (except by Enepaq).

3.3 Misuse
Misuse, abuse, negligence, or accidents void the warranty.

3.4 Non-compliant Use
Using, handling, storing, selling, or distributing the module contrary to the provided instructions voids the warranty.

4. APPLICATIONS

4.1 Aircraft Use
The products are not certified for use in any type of aircraft (including drones, planes, or any flying mechanisms). Enepaq is not liable for any damage if the modules are used in such applications. The buyer assumes all risks.

4.2 Misguided Use
Enepaq does not indemnify the buyer for any loss or expenses caused by the misguided use of products.

5. USAGE

5.1 Buyer Responsibility
The buyer is solely responsible for the installation, storage, operation, and maintenance of the goods. The buyer must ensure that the personnel handling the goods are appropriately qualified. Installation, storage, operation, maintenance, and training are conducted at the buyer’s own risk and expense.

5.2 Seller Liability
The seller is not liable for defects or inconsistencies occurring after the transfer of goods due to the buyer’s or their staff’s failure to ensure proper installation, storage, and operation within specified limits, or due to third-party fault, force majeure, or similar circumstances.

ADDITIONAL NOTES

This product is made to order, non-cancelable, and non-returnable (NCNR). Once the order is placed with the factory, no changes can be made.