Currently hybrid

Currently hybrid
(HEV) and plug-in hybrid (PHEV) in the commercial mass production and gain more market share, the main obstacle is the battery. Electric vehicle battery must IBM Laptop Battery be used in high-performance, low-cost, long life and high safety performance. Lithium-ion batteries are most likely to meet these challenges. At present, all over the world to do the appropriate research and development to improve the battery characteristics. But even the best battery performance, combined into a poor battery pack battery pack may also lead to overall performance, reduced life, security, deterioration of which led to increased costs. In addition, we also must take into account machinery, packaging, electricity, heat, security, monitoring, control, and other parts of the interface with the vehicle and other issues.

Batteries from the laptop battery pack is generally composed of modules or single cells. A battery module also formed by a number of single cells. Loaded in a battery of electronic and thermal control of the box, this cabinets there is a whole battery system with the vehicle interface to other components of the facilities, and battery management systems. Each module also has its proper packaging, thermal control and mechanical or electronic equipment. This loaded with batteries, thermal control and electronic equipment, and other parts of the box is what we usually refer to the IBM 08K8198 Battery pack.

Battery Select

The packaging of lithium-ion batteries should take into account the following: battery module interconnection between the single cell design; batteries, battery modules and electronic components, the connection between the specific design; structure subject to shock and vibration protection; how to battery pack for collision protection; select the ideal fixed in position of the vehicle; and vehicles other components of the mechanical interface design. Therefore, in the initial design of battery, it must take into account: safety (abuse of limitations); the entire system of packaging costs; of packaging the life and durability of effects; packaging recyclable and re-use of; manufacturing costs; maintenance / repair of convenience; thermal management (because of temperature influence battery life and performance); electronic monitoring and control; display performance, capacity, recession and so the measurement facilities. Therefore, in the initial selection IBM 08K8197 Battery， of a suitable type of battery, battery pack for the packaging, interconnect design, thermal management, are very meaningful.

Battery Safety

Security is the largest lithium-ion battery concerns. Abuse trials, over-voltage, over charge, over discharge, overheating, nail puncture, external short circuit, or an internal short-circuit defects and so may lead to thermal runaway and IBM 92P1075 Battery electrolyte leakage, smoke damage, openings, fire, or even an explosion. For the application of the battery in the vehicle we should be demanding. Although batteries are by improving the negative electrode materials can improve the safety performance of adding additives and through effective electronic and mechanical control virtually eliminate or significantly reduce the risk of accidents, but are like a pressure and squeeze, as well as thermal runaway caused by internal short-circuit still need special attention. And should therefore be targeted to the battery pack accordingly designed to reduce the impact of these conditions to improve the safety of battery pack.

Small number of large-capacity lithium-ion battery single cell with many small-capacity lithium-ion battery single cell comparative

In the PHEV, HEV and EV on the use of a large number of small-capacity lithium-ion IBM ThinkPad R40 Battery cell with the use of a small amount of single large-capacity lithium-ion battery single cell is different. For example, Energy CS in the PHEV battery pack for use more than 2000 single small 18650 battery (2Ah). And the Chrysler Corporation in the PHEV battery pack using the 200 a much larger single IBM ThinkPad R32 Battery (41Ah). The use of a large number of small-capacity single cells has certain advantages, such as batteries low cost (currently in commodity markets, mostly small-capacity single battery), safety, better (faster cooling), because of the small battery cell while security incidents small size and battery production and processing of higher quality. But there are many drawbacks, including a single cell there are too many inter-connections, requiring higher integration and assembly cost, weight, volume ratio is low, the reliability of difference (integral part of more and somewhat redundant), the need for expensive electrical management . Use fewer large-capacity single cell has some advantages, such as assembly, low cost, weight and volume is high and high reliability (due to the reduced number of connections section). However, the disadvantage is the high cost of IBM 02K6928 Battery, low quality, thermal management becomes more difficult and large-scale security incidents occur. Finally decided to use what kind of trade-off analysis must be based on the specific application.