What is the battery core?

Lithium battery is mainly composed of two large blocks, battery and protection board PCM (power battery is generally called battery management system BMS), protection board is mainly composed of protection chip (or management chip), MOS tube, resistor, capacitor and PCB board. The battery core is equivalent to the heart of the lithium battery, and the management system is equivalent to the lithium battery. The brain battery is mainly composed of a positive electrode material, a negative electrode material, an electrolyte, a diaphragm and an outer casing.

There are certain differences between the two, and the natural size is different.

The battery core is an important part of the lithium battery component. The lithium battery is often composed of a battery core, a management (protection) unit, a casing, etc., so the size is normal.

The battery core is an important part of the lithium battery component. The lithium battery is often composed of a battery core, a management (protection) unit, a casing, etc., so the size is normal. The battery core is a semi-finished product, which cannot be used directly as a battery. It is only powered. It needs to be equipped with a protection circuit, and the outer casing is packaged to form a finished battery.

Refers to a single electrochemical cell containing positive and negative electrodes, generally not used directly. Different from the battery contains protective circuit and housing, it can be used directly.

The composition of the lithium ion secondary rechargeable battery is such that: the cell + protection circuit board. The rechargeable battery removal protection board is the battery. He is the power storage part of the rechargeable battery. The quality of the battery directly determines the quality of the rechargeable battery.

The mobile phone board removes the outer casing, and then removes the protective circuit board in the electric board to leave the lithium battery.

The battery core is divided into aluminum shell batteries, soft pack batteries (also known as "polymer batteries"), and cylindrical batteries. Generally, the mobile phone battery adopts an aluminum-clad battery core, and digital products such as Bluetooth adopt a soft-package battery core, and the battery of the notebook computer adopts a series-parallel combination of cylindrical batteries.

The particle size is small, the specific surface area is large, the color is white, the purity is high, and the electrochemical performance is obviously improved. It can be used in lithium titanate battery materials and lithium cobalt oxide battery materials. 1: Typical Faraday tantalum capacitance behavior is exhibited over a potential range of -0.05 to 0.35 v(vsSCE). The so-called tantalum capacitor is developed after the electric double layer capacitor. The tantalum capacitor is also called the Faraday quasi-capacitor. For the Faraday quasi-capacitor, the process of storing the charge includes not only the storage on the electric double layer, but also the ion in the electrolyte in the electrode active material to store the charge in the electrode due to the redox reaction. The ions in the electrolyte, generally H or hydroxide, diffuse from the solution to the electrode/solution interface under the action of an applied electric field, and then enter the bulk phase of the electrode surface active oxide through the electrochemical reaction at the interface, due to The electrode material is an oxide having a large specific surface area, so that a considerable amount of such an electrochemical reaction occurs, and a large amount of charge is stored in the electrode. During the discharge, these ions entering the oxide will return to the electrolyte again, and the stored charge will be released through the external circuit. This is the charging and discharging mechanism of the Faraday quasi-capacitor. Explain the white point, tantalum capacitor is an infinite number of small electric double layer capacitors. 2: Increase the specific capacity (method/gram) at the same current density (mA/cm 2 ). 3: Reduce the self-discharge rate and have a good cycle life. Composition: nano titanium dioxide (XZ-TI01) Appearance: white powder; PH value: 6 - 8; particle size: 10 nm; specific surface area: 60 - 70 m2 / g; purity: 99.9%, drying weight loss 105 ° C, 2 H ≤ 0.05 (%), loss on ignition (%) ≤ 0.1; iron content ≤ 3 qualified lead (Pb) ppm ≤ 10 qualified. Packing: 10 kg / paper drum lined with plastic film bag

The composition of the rechargeable battery is this: cell + protection circuit board. The rechargeable battery removal protection board is the battery. He is the power storage part of the rechargeable battery. The quality of the battery directly determines the quality of the rechargeable battery.

The mobile phone board removes the outer casing, and then removes the protective circuit board in the electric board to leave the lithium battery.

The rechargeable battery is composed of battery core + protection circuit board + plastic shell + insulation accessories + related accessories. Among them, the battery core plays a leading role.

Classification / cell editing

The batteries are divided into six categories: nickel-metal hydride, nickel-cadmium, lithium battery, polymer, lead acid, and electricity storage.

The individual voltages of each cell: nickel-hydrogen, nickel-cadmium is 1.2 v. Lithium battery, the polymer is 3.7 v lead acid is 1.5 v. The voltage of the storage core is usually 5 v9v12v.... and so on.

Battery difference: 1. Nickel-metal hydride and nickel-cadmium batteries have no distinction in appearance. They are mainly divided into weight capacity, and nickel-cadmium batteries are lighter. Nickel-metal hydride, nickel-cadmium battery models in the battery field are usually AAAA grade, AAA, AA, A, SC, C, D, N, F, etc. to illustrate AA is what we usually call the 5th battery, the size is: diameter 14 mm, height 49 mm; AAA is what we usually call the 7th battery, the size is: 11 mm in diameter and 44 mm in height. The above two types are available on the market, and most of the other models are used to make electronic products. Nickel-cadmium battery core: Nickel-cadmium battery core consists of two plates, one made of nickel and the other made of cadmium. These two metals react reversibly in the battery, so the battery can be recharged. The advantage of nickel cadmium is that the "knot" is light and inexpensive. The disadvantage is that cadmium metal is polluted by the environment, the battery capacity is small, and the life is short. Therefore, the nickel-cadmium battery is the lowest-grade battery, and has a memory effect. It must be discharged first every time, otherwise his memory function will greatly reduce the charge of the mobile phone. Only when the battery's residual power is discharged and then charged, can the battery charge amount be maintained. Nickel-metal hydride battery: Nickel-hydrogen battery core is composed of hydrogen ion and metal nickel. The electricity reserve is 30% more than that of nickel-cadmium battery. It has longer service life than nickel-cadmium battery, and it has no pollution to the environment and no memory effect. The disadvantage of nickel-metal hydride batteries is that the price of nickel-cadmium batteries is expensive, the weight is heavier than nickel-cadmium, and the capacity is lower than that of lithium batteries, but the advantage is that the batteries will not explode due to over-charge and over-discharge.

Lithium batteries are divided into two categories: one is lithium battery shell, the other is lithium aluminum shell, the same type of battery aluminum shell weight, steel shell weight, aluminum shell capacity is higher. Due to the different internal structure of the steel shell and the aluminum shell, there are also differences between the positive and negative poles of the shell. The outer shell of the steel shell battery is the negative pole, and the top is the positive pole: the electrode of the aluminum shell is just opposite to the steel shell. The outer casing is positive and the top is negative. There is no big difference in internal resistance and voltage between the two batteries.

The main characteristics of the battery core are small particle size, large comparative area, white color, high purity and obvious electrochemical performance. It can be used in lithium titanate battery materials and lithium cobalt oxide battery materials.

1: Typical Faraday tantalum capacitance behavior is exhibited over a potential range of -0.05 to 0.35 v(vsSCE). The so-called tantalum capacitor is developed after the electric double layer capacitor. The tantalum capacitor is also called the Faraday quasi-capacitor. For the Faraday quasi-capacitor, the process of storing the charge includes not only the storage on the electric double layer, but also the ion in the electrolyte in the electrode active material to store the charge in the electrode due to the redox reaction. The ions in the electrolyte, generally H or hydroxide, diffuse from the solution to the electrode/solution interface under the action of an applied electric field, and then enter the bulk phase of the electrode surface active oxide through the electrochemical reaction at the interface, due to The electrode material is an oxide having a large specific surface area, so that a considerable amount of such an electrochemical reaction occurs, and a large amount of charge is stored in the electrode. During the discharge, these ions entering the oxide will return to the electrolyte again, and the stored charge will be released through the external circuit. This is the charging and discharging mechanism of the Faraday quasi-capacitor. Explain the white point, tantalum capacitor is an infinite number of small electric double layer capacitors.

2: Increase the specific capacity (hair/gram) at the same current density (mA/cm 2 ). 3: Reduce the self-discharge rate and have a good cycle life. Composition: nano titanium dioxide (XZ-TI01) Appearance: white powder; PH value: 6 - 8; particle size: 10 nm; specific surface area: 60 - 70 m2 / g; purity: 99.9%, loss on drying 105 ° C, 2 h ≤ 0.05 (%), loss on ignition (%) ≤ 0.1; iron content ≤ 3 qualified lead (Pb) ppm ≤ 10 qualified. Packing: 10 kg / paper drum lined with plastic film bag.

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