The wireless revolution, the prolific use of PDAs, MP3s, MP4s, Laptops, cell phones, smart phones, DVD players and other portable devices, the need for intelligent, high-capacity batteries increased. Laptop Batteries, however, are not typical in design. Yes, the battery, the portable device, which as a smart battery and as such the internal system design of a smart battery is more complex than people realize the best known. Let's look at what the internal structure lookPortable battery looks like!
First, high-powered portable devices require an electrical current. There are two types of electricity (direct current flow and alternating current flow). Direct means that the actual charge flow in one direction. A battery supplies direct current (DC) because there is no way to change the + and - you see on the battery.
In order to create direct electrical current electrons causes the need to produce atomsa flow of electrons. Why? The answer is because electricity is a property of some subatomic particles (protons, electrons and neutrons) which couples to electromagnetic fields and causes attractive and repulsive forces between them, by an electric current is generated, and that's where it comes from power. We try to explain!
Scientists have ways to generate large numbers of positive atoms and free negative electrons are found (in other words, they separate and transport of electrons foundof atoms). Since overpopulated proton (positive) atoms of electrons (negative) to do, so they can be balanced, these positive atoms have a strong attraction for electrons. The manufactured disequilibrium creates a state of continuous flow of electrons to atoms with an overpopulation of protons (positive atoms). When the flow of electrons from one atom to another atom a current of electrons (which is the way to get electricity) is designed to move.
This current can be captured, stored and used to provide aDrinking device. In a portable battery powered the creation of electricity begins with a chemical reaction. As a result, electrons, atoms are made of a chemical reaction need. It is used in PDA batteries for example lithium ion or lithium polymer. Lithium is in large part to its higher energy density in terms of performance for the weight and space.
General Characteristics of Lithium
Name: lithium
Symbol: Li
Atomic number: 3
Atomic weight: [6.941 (2)] gmr
CAS Registry ID: 7439-93-2
Number of groups: 1
Group name: Alkali
Period Number: 2
Block: s-block
Standard state: solid at 298 K
Color: silvery white / gray
Classification: Metallic
Lithium is used, among many other applications, such as a battery anode material (due to its high electrochemical potential) and lithium compounds are used in dry cells and batteries. In fact, the energy of some lithium cells can be five times larger than aequivalent-sized lead-acid cell and three times longer than alkaline batteries. Lithium cells often have an initial voltage of 3.0 V. This means that the batteries can be lighter, have a lower cost per use, and profiles have higher voltage and more stable.
In PDA batteries lithium is converted from chemical energy into electrical energy. This process makes a battery an electrochemical device that stores chemical energy and releases it in the form of electricityQuestion.
Chemical reactions are strongly influenced by their environment. The environment of an internal battery includes design parameters, current requirements, capacity requirements and performance, temperature and security requirements.
Critical to battery design is knowing how much voltage is required? The tension is a measure of electricity. The voltage requirements we need to know to know the wide upper and lower voltage (rated range).
The second keyComponent of a battery to know is, the current requirements. PDAs, MP3 and other portable devices, for the most part, utilize a constant discharge energy to function. This means that the amount of energy such as electricity for battery power to maintain a constant increase to maintain. So we need to know, finally, the maximum required flow. This is important because knowing the max current requirement will influence the necessary protection of chemistry, circuitry, and wiresSkills among others. Once again, we need to know the current requirement over the entire range of nominal battery voltage between the current start-up peaks (intermittent transient pulses).
Another important thing to know about current requirements is the inert current drain of the device. Devices, even if you turn off, small amounts of electricity for the 'switches, memories and loss of components.
The third key requirement to know the battery capacity is necessary andRuntime. This determines the overall physical size of the battery. Capacity and runtime is measured in amperes. Amps - or A - is an abbreviation of Ampere, a 19 th Century French scientist who was a pioneer in the quest for power. Amps measure the volume of electrons through a wire in a second. The electric current is measured in amperes, where 1 ampere 62,000,000,000,000,000,000 the flow of electrons per second!
Ah - or Ah - measures capacity. Ah is whatis ultimately important to consumers because they have the capacity or amp hours that tells us how long you can expect a battery to deliver a charge before his execution. As with all metric measurements, Amps can be used in small (or larger) units by breaking a prefix, in this case by an "m" to the amp hour we are renaming the amp hour milli amps: mAh; (1Ah = 1000 mAh).
If we consider the design capacity we must determine the chemical needed to ensure the necessary autonomyare met. Lithium is used for its electrochemical properties. Lithium is a part of the family of alkali metals a group of highly reactive metals. Li reacts steadily with water. In addition to the per unit volume of lithium packs the greatest energy density and weight of this grouping of reactive metals.
Operating ambient temperature are also important because the internal heat of the battery greatly affect the life of a battery. Use and conservationThe patterns are external effect that has an impact on battery life and are the responsibility of the user (for example, you leave the device in a hot car with the windows and doors, or take the device into a sauna) .
A safety requirement for a battery contains lithium requires protection circuitry to prevent the cells in the battery from conditions like over charge, over discharge, high currents and short circuit o. Protected circuits consists of integrated circuits (programmeddigital circuits), several field-effect transistors (FET), that the current system between two points, and resistors (two-terminal electronic component that resists the current flow, creating a voltage drop between terminals). These circuits increase the cost and space requirements for the battery and the position requires a careful physical layout in order to preserve the integrity of the system.
Electromagnetic interference (EMI) or protection from electrostatic discharge is another safety hazard.EMI is radiated or conducted, can occur throughout the electromagnetic spectrum. The main problem with EMI is the disruption electronics. In wireless devices EMI can leak attenuation of signal strength and noise during transmission of lead. Batteries are used as sources of EMI radiation shielding, and that measures be taken to reduce and or prevent EMI.
Another aspect of lithium battery design is the concept of smart batteries. A smart battery stores, monitors,prevents, and transmits critical battery information stored within the battery.
A smart battery to communicate with the host device via an Internet connection to obtain information about remaining capacity, battery voltage, error, cycles, such as the internal temperature, power, and several other factors. A smart battery can have the air conditioning cycle, which is completely discharged, then recharge the battery so that the internal remaining capacity value to be exactcalibrated. Smart batteries often have an LED or LCD display, allow the user to check the status of the battery before use.
A lithium-based batteries typically use coulomb counting smart to determine the capacity, which means the circuit monitors the capacity in and out of the battery voltage measurement across a sense resistor. For example 1 coulomb, the amount of electrical charge by a current of 1 ampere flows is carried out for about 1 second. Coulomb counting is based on CoulombLaw stating that the size of the electrostatic force between two point charges is directly proportional to the size of individual loads and inversely proportional to the square of the distance between the charges is.
The review of the internal structure of a battery that has been extended. In no case thoroughly. I hope that gives you a basic understanding of what under the hood that the inside of the battery and how it works.
