Maintenance-free lead-a山體cid batteries a吃個re composed of posi爸資tive and negative pla外筆tes, separators and ele頻海ctrolytes, battery slots and connec我兒ting bars (or lead parts), ter聽間minals and exhaust valves.

1. The main parts of the b照事attery

1. The pole plate i年街s the core compon為美ent of the battery, equivalent to the 市見"heart" of the battery, whi嗎綠ch is divided into a 短行positive plate and a n議光egative plate.

2. The function of the 身吧separator is to isolate the唱好 positive and negative plates 志森to prevent short cir呢廠cuits, which can be 技來called "the third electr黑樹ode". As a carrier of electrolyte作喝, it can absorb爸關 a large amount of electrolyte and p討黃lay a role in good ion diffu高用sion (ion conduction). F黑家or sealed maintenan愛廠ce-free batteries, t唱畫he separator can also b舊男e used as a "channel&qu訊笑ot; for the positive plate to generate她電 oxygen to reach the negative p問票late, so that the plate can smoothly es小海tablish oxygen cir睡上culation and reduce 見金water loss. The 長我key to the maintenance短好-free partition batte長技ry is the use of ultra-fine gla什個ss fibers.

3. Most of the electrolyte is生問 composed of pure water and多離 sulfuric acid, mixed with some addit暗對ives.

The main function of the ele見商ctrolyte lies in two aspects從子: one is to participate in the 麗愛electrochemical react照討ion, which is one of the acti我問ve substances of the ba票間ttery; the other is 謝子to conduct electricity. make the che街視mical reaction proceed smoothl少到y.

4. The safety valve is one o舊購f the key components of mainten現行ance-free lead-acid batteries. I看拍t is located on the 視知top of the batt雜身ery. It plays a role in fou亮通r aspects:

(1) Safety func我民tion, that is, whe西還n the gas pressure generated in電見side the batter制答y reaches the pressure of th銀都e safety valve,市木 open the valve to releas月森e the pressure to prevent pr劇弟oduction

(2) Sealing function, 些新when the internal pressure of the batt木要ery is lower than the closing pres術冷sure of the safety valve, the safety 了紙valve is closed to prevent 綠刀the leakage of the internal g他中as acid mist, and also prevent人她 the air from entering the battery 船煙and causing adve子坐rse effects.

(3) Ensure the norm如年al internal pressure of mainte舊大nance-free lead-acid batteries, promo理能te oxygen recombination in the battery學店, and reduce water lo裡不ss.

(4) Explosion-proof e不東ffect, some safety valves are equipped民們 with anti-acid a秒子nd anti-riot sheets. Such 從民as Panasonic batterie子電s.

In addition, there舊業 are many types of 請北safety valve structures, 老舊mainly cap, umbrella, s雨身heet and so on. It is common to make喝訊 cap-type rafts from rubber with 動會better elasticity. Its structure is s用訊imple and the fa靜技ilure rate is low, so 場樂it is widely used.