Why does overdischarging lithium batteries damage the battery?

Introduction Why does overdischarging lithium batteries damage the battery? Excessive charging and discharging of lithium-ion batteries will result in permanent damage to the positive and negative electrodes. Excessive discharge causes the carbon sheet structure of th

Why does overdischarging lithium batteries damage the battery?

Excessive charging and discharging of lithium-ion batteries will result in permanent damage to the positive and negative electrodes.

Excessive discharge causes the carbon sheet structure of the negative electrode of the lithium battery to collapse, and the collapse will prevent lithium ions from being inserted during the charging process of the lithium battery and overcharging the lithium battery will result in too much lithium ion; be integrated into the carbon structure of the negative electrode. As a result, some lithium ions can no longer be released, which will damage the lithium battery.

Detailed information:

The final discharge voltage of lithium-ion batteries is 2.75V~3.0V (domestic battery manufacturers give the operating voltage range or the discharge voltage final, each parameter is slightly different, generally 3.0 ~ 2.75V, iron phosphor is 2.5V).

Continuing to discharge below 2.5V (iron phosphor 2.0V) is called overdischarge (the international standard is a minimum of 3.2V, iron phosphor 2.8V at low voltage or self-discharge reaction will cause lithium). ions Active substances are broken down and destroyed and are not necessarily restored. Any form of overcharging lithium-ion batteries will result in serious damage to battery performance or even an explosion.

Baidu Encyclopedia - Lithium Battery

What are the maximum and general discharge operating current, charging current and operating voltage of a lithium battery? lithium iron phosphate

Generally, the working voltage of lithium battery is 3.7V and the termination voltage is 3.2V; the operating voltage of the lithium battery fer phosphate is 3.26 V and the termination voltage is 2.5 V.

Lithium battery is a primary battery that uses lithium metal or alloy lithium as the negative electrode material and uses a non-aqueous electrolyte solution. It is similar to rechargeable lithium batteries. Ion batteries and lithium-ion batteries are different. The inventor of lithium batteries is Edison. Since the chemical properties of lithium metal are very active, the processing, storage and use of lithium metal are subject to very high environmental requirements. Therefore, lithium batteries have not been used for a long time.

Lithium batteries are generally divided into two categories:

Lithium metal batteries: Lithium metal batteries generally use manganese dioxide as a material cathode, metallic lithium or other. A battery that uses a metal alloy as the negative electrode material and uses a non-aqueous electrolyte solution.

Lithium ion battery: Lithium ion battery generally uses lithium alloy metal oxide as the positive electrode material, graphite as the negative electrode material, and non-aqueous electrolyte.

Causes of lithium battery explosion:

1. Great internal polarization.

2. The pole piece absorbs water and reacts with the electrolyte.

3. The quality and performance issues of the electrolyte itself.

4. When injecting liquid, the amount of liquid injected does not meet the process requirements.

5. The sealing performance of laser welding during the assembly process is poor., air leakage, leakage when measuring air leakage.

6. Dust and dust from the pole pieces can easily causemicro-short circuits.

7. The positive and negative electrode sheets are thicker than the process array and difficult to insert into the shell.

8. Liquid injection sealing problem, poor sealing performance of steel balls leads to air swelling.

9. The incoming shell material has a thicker shell wall, and shell deformation affects the thickness.

1. The working current of lithium iron phosphate battery is generally 1C, the maximum is 15C.

2. Charging current is the same as operating current, generally 1C, the maximum is 15C.

3. The general operating voltage of standard lithium iron phosphate batteries is 3.2V; the maximum operating voltage is 3.65V.

Lithium iron phosphate:

Lithium iron phosphate electrode material is mainly used in dvarious lithium-ion batteries. Since the Japanese NTT first revealed the olivine-structured lithium battery cathode material of AyMPO4 (A is an alkali metal, M is a combination of CoFe: LiFeCoPO4) in 1996, John B. Goodenough of the 'Texas State University in the United States in 1997 and others. research groups also subsequently reported the reversible transfer and desorption of lithium characteristics from LiFePO4.

The United States and Japan coincidentally published the structure of olivine (LiMPO4), which attracted great attention to this material and caused extensive research and rapid development. Compared with traditional lithium-ion secondary battery cathode materials, LiMn2O4 spinel structure and LiCoO2 layered structure, LiMPO4 has wider sources of raw materials, is cheaper and has no environmental pollution.

Lithium iron phosphate battery:

Lithium iron phosphate battery refers to a lithium-ion battery using lithium iron phosphate as the positive electrode material. The cathode materials of lithium ion batteries mainly include lithium cobalt oxide, lithium manganate, lithium nickel oxide, ternary materials, lithium iron phosphate, etc. Among them, lithium cobalt oxide is the cathode material currently used in most lithium-ion batteries.

  • Popular Focus
  • Where is the cheapest battery wholesale?

    Where is the cheapest battery wholesale in Tangxia, Sanyuanli, Baiyun District? There is an enterprise specializing in the independent production of electric vehicles in Tangxia, Sanyuanli, Baiyun District, Baiyun Sanyuanli Avenue, Baiyun Sanyuanli Street
    08-02
  • Four 3.7V lithium batteries in series and parallel produce 7.4V/4.4A. How to reduce it to 4.8V/4.4A?

    Four 3.7V lithium batteries in series and parallel produce 7.4V/4.4A. I personally think it is impossible to reduce it to 4.8V/4.4A. Because the discharge platform of lithium batteries is generally set
    08-10
  • What are the materials of the negative electrodes of lithium batteries?

    What are the materials of the negative electrodes of lithium batteries? The main commercial applications of lithium batteries include graphite, which is a sheet of copper used to guide current and which does not react. another safe
    08-02
  • The difference between 18500 and 26500 batteries

    What is the difference between 18500 and 26500 batteries? The answer above is 18650. The person asking the question should ask what is the difference between 18505 and 26500 batteries. In the case of Fuant ER1
    08-02
  • What does 3.7V 80mAh written on a lithium battery mean?

    What does 3.7V 80mAh written on a lithium battery mean? 3.7 V, 80 mA = 0.08 A, H means 1 hour, or 3600 seconds. Taken together, it is
    08-02
  • How long does a lithium battery (cell phone battery) last?

    How long does a lithium battery (cell phone battery) last? The lifespan of mobile phone batteries, under normal conditions of use and without serious impact, the lifespan set by the manufacturer must be 5 years.
    08-02
  • Will lithium batteries explode when charging?

    Will lithium batteries explode when charged? Will lithium batteries explode when charged? Lithium battery explosions usually occur during the charging process, because the negative electrode material of lithium batteries is graphite or other carbon materi
    08-02
  • Parameters of lgdas31865 lithium battery

    Parameters of lgdas31865 lithium battery The parameters of lgdas31865 lithium battery are as follows: LGDAS31865 is a model 18650 lithium battery with a capacity of
    08-02
  • What are the main components of lithium battery electrolyte?

    What are the main components of lithium battery electrolyte? The composition of lithium battery electrolyte is shown below. 1. Ethylene carbonate: molecular formula C3H4O3. Colorless transparent liquid (>35℃), room temperature
    08-02
  • Who are the lithium battery manufacturers in Shandong?

    What are the lithium battery manufacturers in Shandong? Shandong Shengyang Power Supply Co., Ltd. and Shandong Weineng Environmental Protection Power Technology Co., Ltd. 1. Shandong Shengyang Power Supply Co., Ltd. is located in Shengyang, Qufu City.
    08-02
  • Types of drone batteries available in 2024

    Part 1. Types of drone batteries available in 2024In 2024, drone batteries have advanced significantly, offering a range of options to cater to various needs in
    07-30
  • How long does it take to charge 26650 battery?

    How long does it take to charge a 26650 battery? The charging time for a 26650 battery is generally between 3 and 6 hours, but the precise time depends on the power of the charger and the capacity of the battery. in general
    08-02
  • For what?Sure, here's an article based on the phrase "For what?

    The simple yet profound question, "For what?" often serves as a gateway to deeper reflections on purpose and intention. It is a query that invites us to delve into the reasons behind actions, decisions, and circumstances that shape our lives and the wor
    08-02
  • Choosing the Right Cart Battery

    This comprehensive guide will walk you through everything you need about cart batteries, from understanding different types to making an informed purchase decision.
    08-02
  • 30mAh~500mAh 3.7 V Li-ion Battery

    Welcome to Ufine's collection of 3.7V lithium-ion batteries ranging from 30mAh to 500mAh. Explore a diverse range of compact and lightweight batteries suitable for various electronic devices,
    08-02
  • Here are 10 essential facts about drone batteries for 2024.

    10 Key Facts About Drone Battery for 2024 In 2024, drone batteries have advanced significantly, offering a range of options to cater to various needs in the consumer, commercial, and industrial sectors. Below are the primary types of drone batteries avai
    08-02
  • Could you please explain the difference among IMR, ICR, INR, and IFR 18650 batteries?

    What is the Difference Between IMR, ICR, INR, and IFR 18650 Battery?In 18650 batteries, discerning the differences among IMR, ICR, INR, and IFR types is fundamental for tailored and efficient battery usage. These distinct
    08-02
  • Safety considerations for cart batteries

    Selecting the ideal cart battery is crucial for ensuring optimal performance and longevity of your electric vehicle or vaping device. This comprehensive guide w
    08-01