Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download lithium-ion multi-cell blocks designed to be combined in series and
Document related concepts
Transcript
2321 W. 41st Street Chicago, IL 60609 USA +1.773.922.1155 [email protected] allcelltech.com lithium-ion multi-cell blocks designed to be combined in series and/or parallel in a variety of configurations Specifications 32P Block 60P Block HP-32P2.2 HP-60P2.2 Nominal Voltage 3.65 V 3.65 V Nominal Capacity 69 Ah 129 Ah Nominal Energy 251 Wh 471 Wh Size 6.5 x 4.3 x 2.8” 16 x 11 x 7 cm 7.7 x 6.2 x 2.8” 20 x 16 x 7 cm Weight 2.1 kg 3.8 kg Operating Voltage 2.75 ~ 4.2 V 2.75 ~ 4.2 V Charge Voltage 4.2 V 4.2 V Maximum Charge 69 A 471 A Temperature Range* Discharge (Charge) -20 to 60°C (0 to 60°C) -20 to 60°C (0 to 60°C) Maximum Discharge Continuous Peak 275 A 344 A 516 A 654 A Voltage Range 3.5 ~ 3.7 V 3.5 ~ 3.7 V Temperature Range -20° ~ 40°C -20° ~ 40°C Operating Specifications Storage Specifications *Power regulation is required above 45°C Features • • • • • Premium lithium-ion cells Threaded stud terminals High charge/discharge rates Combinable in series/parallel Compatible with thin film heaters for cold weather use Benefits • Standard building block supports wide variety of energy/power needs • Perfect for hot environments • Long-lasting and durable • 50% better energy density than large format LiFePO4 cells • Protection against thermal runaway propagation © 2014 AllCell Technologies LLC. All rights reserved. Integrated Thermal Management AllCell SP Blocks™ are protected by our proprietary Phase Change Composite (PCC™) material. PCC™ absorbs waste heat ensuring uniform pack temperature, and has passed the UL 94 V-0 flammability test. The result is industry leading safety with extended cycle life. 2321 W. 41st Street Chicago, IL 60609 USA +1.773.922.1155 [email protected] allcelltech.com The SP Block™ was designed to provide customers with a set of standard multi-cell building blocks that can be combined in series and/or in parallel. Inside each SP Block™ are a number of lithium-ion cells connected in parallel and surrounded by AllCell’s proprietary Phase Change Composite (PCC™) material. The PCC material ensures temperature uniformity across the cells in the block and protects them from overheating, improving both cycle life and safety. Each block is encased in a semi-rigid electrically-isolating material, and includes two threaded stud terminals for easy electrical connections. Cell Temperature with PCC Limit Maximum Temperature In the same way that an ice cube keeps a glass of water at 32 F, AllCell’s PCC composite limits the maximum temperature of the battery pack to the melting point of the phase change material within the PCC throughout the melting process. The phase change material—typically a wax—is encapsulated within the PCC, ensuring no leaks occur during melting. Maintain Temperature Uniformity AllCell’s PCC material also ensures temperature uniformity across cells in each battery pack. As each cell discharges electricity and begins to heat up, the graphite within the PCC distributes the heat evenly throughout the pack, avoiding hot spots and keeping the temperature of the hottest cell no more than 3 -5 C higher than the coldest cell. Increase Life Cycle by 50% or More The result of limiting maximum temperature and ensuring temperature uniformity is a dramatic increase in cycle life. The graph to the left illustrates the typical increase in cycle life driven by adding PCC to a battery pack. If the battery pack in this example cost $250, the capital cost per charging cycle would be reduced from $0.63 to $0.35. Prevent Thermal Runaway Propagation Thermal runaway is a technical term for a rapid uncontrolled increase in temperature. In lithium-ion cells, thermal runaway can be triggered by internal short circuits, physical damage, or overheating of the cell. For batteries, the key safety concern is thermal runaway propagation - a chain reaction that spreads to the surrounding cells that can lead to serious fires or large explosions. Simulation results, field tests, and 3rd party evaluations show AllCell's PCC technology successfully prevents thermal runaway propagation. © 2014 AllCell Technologies LLC. All rights reserved.
