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深圳神火手電筒廠家今天介紹下有關18650鋰電池的知識

2012-11-05 11:49:32 jason 112

 

18650鋰電池 簡介


1. 尺寸
  18650這幾個數字,代表外表尺寸:18指電池直徑18.0mm 650指電池高度65.0mm。


2、18650八極鋰電池的種類:
  18650電池分為鋰離子電池和鎳氫電池


3、電壓及容量規格:
  鎳氫電池電壓為1.2V常見容量為4500MAH鋰離子電池電壓為3.6V常見容量為1500MAH-2600MAH


4. 18650鋰電池 3.7V和4.2V的區別
  鋰電池標3.7V或4.2V,是一回事。隻是生產廠商標注的不一樣而己。3.7V 指電池使用過程中放電的平台電壓,而4.2伏指的是充電滿電時的電壓。常見的可充18650鋰電池,電壓都是標3.6或者3.7v,充滿電的時候是4.2v,這跟電量(容量)關係不大,18650電池從1200mah到2600mah,甚至有標2800或3000mah都有)3.7V是指電池電用完時的最低電壓.   一般認為將鋰電池的空載電壓放到3.7V就認為電用完了   鋰電池放電不能將空載電壓放到3.7V以下的,否則會損害電池   4.2V是電池充電的最高限製電壓,   一般認為將鋰電池的空載電壓充到4.2V就認為電充滿了   電池充電過程中,電池的電壓在3.7V逐漸上升到4.2V   鋰電池充電不能將空載電壓充到4.2V以上的,否則也會損害電池   這就是鋰電池特殊的地方

 

18650電池用途
  可以使用放電時間是3-4個小時,循環充電500次。常用在強光手電筒,美國神火官網頭燈,移動醫用設備等方麵。還可以組合起來!18650現在多用於筆記本電池上,還有一些強光手電也在用它,當然,18650性能是非常優異的,所以隻要容量和電壓合適,是比其它材料的電池要優良很多的。。。手電,MP3,對講機,手機。隻要電壓在3.5--5V的電器都可以用。 
 18650電池和5號電池的區別
  18650的意思是,直徑18毫米,長650毫米   而5號電池的型號是14500,直徑14毫米,長500毫米   一般18650的電池在工業上用的比較多,民用的很少,常見的也就在筆記本電池和高檔手電上用的比較多~~   18650隻是電池的尺寸型號,根據電池種類還能分為,鋰離子的18650,磷酸鐵鋰的18650,鎳氫的18650(很少見),目前常見的18650是鋰離子的。鋰電池(Li-ion,Lithium Ion Battery)定義
鋰電池
鋰離子電池定義
  (Li-ion,Lithium Ion Battery):鋰離子電池具有重量輕、容量大、無記憶效應等優點,因而得到了普遍應用——現在的許多數碼設備都采用了鋰離子電池作電源,盡管其價格相對來說比較昂貴。鋰離子電池的能量密度很高,它的容量是同重量的鎳氫電池的1.5~2倍,而且具有很低的自放電率。此外,鋰離子電池幾乎沒有“記憶效應”以及不含有毒物質等優點也是它廣泛應用的重要原因。 另外請注意鋰電池外部一般標有英文7.2V lithiumion battery(鋰電池)或7.2V lithium secondary battery(鋰二次電池)、7.2V lithiumion rechargeable battery(充電鋰電池),所以用戶在購買電池時一定要看清電池塊外表的標誌,防止因為沒有看清電池類型而將鎘鎳、氫鎳電池誤認為鋰電池。
鋰電池充電
  鋰電池充電控製是分為兩個階段的,第一階段是恒流充電,在電池電壓低於4.2V時,充電器會以恒定電流充電。  18650充電鋰電池


第二階段是恒壓充電階段,當電池電壓達到4.2V時,由於鋰電池特性,如果電壓再高,就會損壞,充電器會將電壓固定在4.2V,充電電流會逐步減小,當電流減小到一定值時(一般是1/10設置電流時),切斷充電電路,充電完成指示燈亮,充電完成。目前很多充電器都是用的廉價的方案實現的,在控製精度上不夠好,容易造成電池充電異常,甚至損壞電池。
編輯本段一般配置
  單節標稱電壓一般為:3.6V 或3.7V   充電電壓一般為:4.20V   最小放電終止電壓一般為: 2.75V ,低於這個電壓容易導致電池容量嚴重下降乃至報廢   最大充電終止電壓:4.20V   直徑:18±0.2mm   高度:65±2.0mm   容量:1000mAh以上,有些品牌會標上3600mAh或4500mAh等驚人的容量,但實際容量是達不到的,目前18650電池容量做得最高的是鬆下,能做到3100mAh,但價格也不低。

 

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18650 lithium batteries Profile
 
1 Size
18650 few figures, representing the appearance size: 18 refers to the battery diameter 18.0mm 650 battery height 65.0mm.
 
2,18650 octupole lithium battery types:
18650 battery is divided into lithium-ion batteries and nickel-metal hydride battery
 
3, the voltage and capacity specifications:
The nickel-metal hydride battery voltage of 1.2V common capacity 4500MAH lithium-ion battery voltage to 3.6V common capacity 1500MAH-2600MAH
 
The difference between 4.18650 lithium battery 3.7V and 4.2V
Lithium battery labeled 3.7V or 4.2V, is one thing. Only manufacturers label not as yourself. 3.7V means discharge platform in the battery during the voltage, and 4.2 volts is the charging voltage when the full power. Are standard 3.6 or 3.7v the common rechargeable 18650 lithium battery, the voltage when fully charged is 4.2v, this has little to do with electricity (capacity) 18650 battery from 1200mah to 2600mah standard 2800 or 3000mah have even otherwise it will undermine) 3.7V minimum voltage when the battery runs out. generally believed that the no-load voltage of the lithium battery on the 3.7V that run out of power lithium battery discharge can not be placed in the no-load voltage 3.7V or less battery 4.2V is limited to a maximum voltage battery charging, no-load voltage of the lithium battery is generally believed that the full power charge to 4.2V battery is charging, the battery voltage is gradually increased in 3.7V to 4.2V lithium battery charging can not be no-load voltage charge to 4.2V, otherwise it will damage the battery which is lithium batteries special place
 
18650 battery use
Can use the discharge time is 3-4 hours, the charge cycle 500 times. Commonly used in bright flashlight, headlamp, mobiles medical equipment. Can also be combined! 18650 used for laptop batteries, there are some bright flashlight also use it, of course, the 18650 performance is very excellent, so long as the appropriate capacity and voltage battery than other materials to be excellent, many. . . Flashlight, MP3, walkie-talkies, mobiles phoness. Can be used as long as the voltage in the 3.5 - 5V appliances. 18650 battery and battery difference
18650 mean, 18 mm in diameter and 650 mm long and the 5th battery model 14500, 14 mm in diameter, the general 18650 500 mm long battery industry with more civilian few common also in more laptop batteries and high-end flashlight ~ ~ 18650 is just the size of the battery model, battery types can be divided into 18650 lithium-ion, lithium iron phosphate, 18650, and 18650 of the nickel-metal hydride (rare), the current common The 18650 is a lithium ion. The definition of a lithium battery (Li-ion, Lithium Ion Battery)
Lithium battery
Lithium-ion battery is defined
(Li-ion, Lithium Ion Battery): lithium-ion battery with light weight, large capacity, no memory effect, etc., which have been widely applications - many digital devices using lithium-ion batteries for power, even though its price relatively expensive. The high energy density of the lithium-ion battery, its capacity is 1.5 to 2 times the same weight of nickel-metal hydride batteries, and has a very low self-discharge rate. In addition, almost no "memory effect" and does not contain toxic substances, etc. is also an important reason for it is widely used in lithium-ion battery. Also note that the general standard of lithium battery external English 7.2V lithiumion battery (lithium battery) or 7.2V lithium secondary battery (lithium secondary battery), 7.2V lithiumion rechargeable battery (rechargeable lithium battery), so the user must buy batteries to see the battery block the appearance of signs, to prevent the lithium battery did not see the type of battery, nickel-cadmium, nickel hydrogen batteries mistaken.
Rechargeable lithium battery
Li-ion battery charging control is divided into two phases, the first phase of constant current charging, the battery voltage is lower than 4.2V, the charger will charge constant current. 18650 rechargeable lithium battery
 
The second phase is the constant-voltage charging phase, when the battery voltage reaches 4.2V, because the lithium battery characteristics, if the voltage is again high, it will damage the charger will voltage fixed at 4.2V, and the charging current gradually decreases, when the current decreases to a certain value (typically when the current of 1/10 is provided), to cut off the charging circuit, the charge completion indicator light, charging is complete. Many chargers are cheap program, the control precision is not good enough, is likely to cause the battery does not charge, or even damage to the battery.
Edit this section general configuration
Single nominal voltage is generally: general 3.6V or 3.7V charge voltage: 4.20V minimum discharge termination voltage is generally: 2.75V below this voltage easily lead to a serious decline in battery capacity and even scrapped maximum charge termination voltage: 4.20V diameter : 18 ± 0.2mm height: 65 ± 2.0mm Capacity: 1000mAh some brand monogram on the amazing capacity of 3600mAh or 4500mAh, but the actual capacity is unattainable, doing the highest capacity 18650 battery Panasonic can do 3100mAh, but the price is not low.

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