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1. Differences in conceptual nature

Lithium ion battery: It is a kind of battery with lithium metal or lithium alloy as negative material and non-aqueous electrolyte solution. It depends on the lithium ion moving between the anode and the cathode. In the process of charging and discharging, Li+is embedded and de-embedded back and forth between the two electrodes; During charging, Li+is removed from the positive electrode, and the electrolyte is inserted into the negative electrode. The negative electrode is in a lithium-rich state; The opposite is true when discharging. Because the chemical characteristics of lithium-ion batteries are very vivid, the processing, survival and use of lithium metal are highly demanding.

Battery: battery is also called secondary battery. It is a device that converts chemical energy directly into electrical energy. It is a rechargeable battery designed to realize recharging through reversible chemical response. It generally refers to lead-acid battery. After discharge, the internal active material can be regenerated by charging to store electrical energy as chemical energy; Convert chemical energy into electrical energy again when discharging. A battery is an electrochemical device that stores chemical energy and releases electrical energy when necessary.

2. The peaceful function does not communicate

Li-ion battery: Li-ion battery comes from the invariability and reliable safety design of the cathode material. Li-ion iron phosphate battery has undergone strict safety test, and will not explode even in violent collision. The heat of Li-ion iron phosphate is not high, and the oxidation ability of the electrolyte is low, so the safety is high.

Battery: lead-acid battery will explode under strong impact, threatening the safety of consumers.

3. Value difference

Lithium ion battery: Lithium ion battery is of high value. Lithium ion battery is three times more expensive than lead-acid battery. The service life of the unity clarifies that the cost of communication is still the longer service life of the lithium-ion battery.

Battery: The value of a battery may vary from hundreds of yuan to thousands of yuan. The value of each manufacturer is similar.

4. Difference in green environmental protection

The lithium-ion battery material is free of any toxic and harmful substances, and is considered as a green battery by the world. The battery is pollution-free both in production and use, and conforms to the European RoHS designation, and is a green battery.

There is a large amount of lead in lead-acid batteries, which will pollute the situation if the treatment and punishment are not proper after being discarded.

5. In terms of service cycle life

The service life of lithium-ion battery is longer, and the service life of battery is relatively short. The cycle times of lithium-ion batteries are generally 2000-3000.

The number of battery cycles is 300-500.

6. Weight energy density

The energy density of lithium-ion battery is generally 200~260wh/g, and the lithium-ion battery is 3~5 times of the lead-acid battery, which means that the lead-acid battery is 3~5 times of the lithium-ion battery in the environment of communication capacity, so the lithium-ion battery occupies an absolute advantage in the lightweight of the energy storage device.

The lead-acid battery is generally 50~70wh/g, with low energy density and too clumsy.

7. Volumetric energy

The volume capacity density of lithium-ion batteries is usually 1.5 times that of batteries, so in the communication capacity environment, the volume of lithium-ion batteries is 30% smaller than that of lead-acid batteries.

8. Temperature category difference

The operating temperature of lithium ion battery is - 20-60 ℃, and the thermal peak of lithium iron phosphate battery can reach 350~500 ℃. It can still release 100% capacity under high temperature environment.

The normal operating temperature of the battery is - 5-45 ℃. When the temperature decreases by 1 ℃, the relative capacity of the battery will decrease by about 0.8%.

9. Differences in charge and discharge

The lithium-ion battery has no image effect. The battery can be charged and discharged at any time. The self-discharge of the battery is low and the battery can be stored for a long time; Powerful, fast charging and discharging, more than 80% of the battery can be filled in 20 minutes, and the battery can be discharged in 15 minutes.

The battery has image effect and cannot be charged and discharged at any time; There is serious self-discharge phenomenon, and it is easy to discard the battery after a period of time; The discharge rate is small and cannot be discharged for a long time.

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