combattery84

lithium batteries power the concept of security and life

2.1 The root causes of insecurity in the battery

When the battery is a part of the deviation occurs, such as when the internal short circuit, high-current discharge and over-charging, it will generate a lot of heat, causing the battery to the system temperature increases. When the battery system and reach a higher temperature, Normal 0 7.8 磅 0 2 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:普通表格; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-fareast-font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} Toshiba PA3084U-1BRS battery  Toshiba PA3098U battery   will lead to a series of side-effects, so that the battery produces heat damage, due to battery flammable liquid electrolyte, so the worst case, the battery would catch fire [1].

In the case of the non-normal use (such as overcharge), lithium-ion battery anode is likely to surface, the electron, as a lithium metal precipitation, and gradually gathered into a lithium dendrite punctured diaphragm, connectivity is negative, causing the battery internal micro-short. Lithium-ion batteries used in high compression, high-boiling point organic electrolyte. In the short-circuit, over-charging, high temperature and other non-normal use conditions, the lithium-ion battery internal temperature will rise, the electrolyte may be broken down into a lot of gas will be generated within the sealed housing relatively large pressure. Once this pressure large enough to break through the battery case, rupture occurs, and even lead to burning or explosion [2]

In China, car battery replacement after the recovery of more forgotten corners. A repair shop in the 4S said: "The car battery can be recycled. 4S store in the user's car battery replacement, the unified collection of specialized batteries sold to recycling companies, one can sell a hundred million." Regret is that the owner was told that each time only for a new battery, do not know the replacement of the old batteries can be recycled.

And domestic users of automotive batteries automotive knowledge and understanding of diametrically opposed, in Europe and the United States and other auto power, auto batteries already been placed in the supermarket shelves, and oil, tires, like the three cars side by side to become vulnerable one piece. A fire or a car suddenly broke down there Dabu Zhao circumstances, the owner will be obvious to determine where the problem lies immediately removed. In these countries, can often see such chic scene: the car owners driving a car to the supermarket shopping, by the way forget to buy a battery, to return home to open car cover, replace the battery themselves. This is abroad, is not something new in. In the United States, there are four or more into the hands of the owners to replace their batteries.

"Owner should cultivate a good sense of the car battery consumption, in order to protect their own rights." An appeal to the industry.HP EV087AA Battery, He said: "the current situation, China's auto battery market, has just started, most owners do not realize that automotive batteries are not only start the car directly to the energy, but also for the growing automotive electrical current to provide a balanced guarantee. Leading to frequent car broke down halfway there the embarrassment caused to the owners a lot of unnecessary trouble. Therefore, we owners should be aware of the importance of automotive batteries. "PA3107U-1BAS battery  PA3107U-1BRS battery  

Pleased to see that some well-known domestic companies have started to focus on automotive batteries to guide China's auto battery consumption, and thus lead China's automotive battery industry. As the world's top 200 companies, has the world's automotive battery market share nearly 35% of the industry leader, Johnson Controls has already begun such actions. "We hope that through our efforts to help China's auto users to have a correct knowledge of the car batteries and consumer outlook." Johnson Controls Power Program (battery) of China, Mr. Huang, director of sales and marketing, said in an interview,HP Pavilion dv9000 Battery(hp dv9000 battery), HP EV087AA Battery, HP EX942AA Battery "We understand the owners the case of a sudden Dabu Zhao Jiao set fire flawless mentality, so we hope that through the efforts of Johnson Controls for China to bring a healthy and positive life vehicles as far as possible to avoid the occurrence of the above. "

It is understood that, in order to effectively guide the consumer to promote industrial development, Shanghai, Johnson Controls has established a nationwide 20 Valta flagship store / image of the shop, and will be established throughout the country next year in 200 outlets. HP EX942AA Battery "We hope that in this way is so that people could feel that VARTA service and care, understanding and knowledge of our consumer culture advocated by the car battery." So, said Mr. Huang Zhiyong.

 

High-power charging and discharging of the large-capacity lithium-powered batteries, in the harsh conditions of the use of a portion of the battery easier to induce deviations occur, giving rise to security issues.

2.2 Battery Management System (BMS) the important role of

Li-ion power batteries ideal for high performance, consistency, as long as the use of the process of filling, however, although put, there is no security issue,IBM 92P1060 Battery but the reality is that the quality of mobile phone battery factory in full compliance with standards, but in use there is an explosion incidents, notebook computer battery pack are also continuing fire, explosions, and product recalls reported. From the resulting life of the battery until the end of recovery, there are security issues, even in the factory in full compliance with international safety standards, in the course of evolution from the safe state to a state of insecurity and good quality single cell performance to achieve the life of a gradual decline limit , the poor quality of the single cell, in the course of its performance will start to appear and a variety of abnormal deterioration recession, worried about the insecurity of the state to enter. This is a gradual process of cumulative change. Battery management system is that unlike some battery manufacturers as a luxury but a must have, but also applied consistently throughout the battery pack. Battery management system at home and abroad have been many studies and start applications in many areas have been able to meet the needs of some markets, lithium power battery applications for battery management system put forward higher requirements to ensure the safe use of battery power, lithium power battery management system for the primary task.

3 Battery Management System

A typical battery charge PA3166U-1BRS battery  PA3176U-1BAS battery balance management system, its methods of work is to connect a good series battery charging at the same time, testing each single battery in the battery terminal voltage, when a single battery terminal voltage is high, The single cells in parallel with the balance of the circuit to the battery charge diversion, reduce the single battery charge speed and terminal voltage rise rate, so that the single battery terminal voltage tends to a balanced line, thereby to avoid the series battery each single battery charge and discharge characteristics of the differences affect the battery life. As the shunt charging the battery in parallel with the monomer part of the charging energy consumption of a balanced circuit, a balanced circuit fever, a balanced circuit balanced ability to be limited. For large-capacity, high-power battery, high current charge, the balance of the balance of the circuit capacity can not meet the actual needs.