Regardless of whether it is an electric vehicle or a fuel vehicle, there is a 12V lead-acid battery inside as an auxiliary power supply, which is used for most of the electrical appliances in the car, including: headlights, glass lift controllers, wiper controllers, horns, etc. Many people Curious, it is understandable that a fuel vehicle has an auxiliary power supply. Why is there a power battery on an electric vehicle and an auxiliary power supply?
Because the car has been developed for many years, the standard voltage of automotive electrical appliances is 12V, and the power battery is a high-voltage platform. If it is output to electrical equipment, a voltage converter needs to be equipped. In order to reduce the energy loss of the power battery, electric vehicles are also equipped with 12V lead-acid. Auxiliary battery to directly supply electrical appliances inside the car.
The change of lead-acid auxiliary battery to lithium-ion auxiliary battery, etc., for these two upgrades, attracts special attention from netizens; AMD Ryzen processor, with higher computing power, can be compatible with many stand-alone masterpieces, and supports gamepad access.
Imagine what it would be like to play Cyberpunk 2077 with the handle in the car while charging while driving a Tesla? Or if your husband hasn't come home after get off work, don't worry, he just went to play games...
The addition of game console functions inside the car machine will not cause major fluctuations in the automotive industry, while the replacement of 12V lead-acid batteries with lithium-ion batteries will have a huge impact.
The elimination of lead-acid batteries is a major change with historical significance; the 12V, 33Ah lead-acid batteries previously used in Tesla have a maximum power of 0.4kWh and a weight of up to 12kg. Due to the characteristics of lead-acid batteries, their service life does not exceed 5 years is a far cry from the current mainstream lithium-ion batteries.
It is understood that the lithium-ion auxiliary power supply that Tesla will upgrade will use the Ningde era batteries. On the basis of the reduced volume, the weight is only 1.8 kg, which is more than 6 times lighter, and the charge and discharge cycle can reach about 2,000 times. In terms of the charge and discharge cycle, the battery cell should be a lithium iron phosphate battery, which has a huge improvement over lead-acid batteries in terms of weight, volume, energy density and lifespan.
Lead-acid batteries will not only be eliminated in automobiles, but the electric bicycles on the market are also starting to be equipped with lithium-ion batteries, which can increase the battery life and reduce the weight of the body; therefore, in automobiles, the industry generally believes that it will also It will be replaced by lithium-ion batteries, but Tesla has made a brand of "eat crabs first"; the author analyzes that after Tesla completely replaces the auxiliary power supply of products with lithium-ion batteries, the rest of the brands and products will also be in the market. The array of "upgraded" auxiliary power supplies will be added in the future.
12V lead-acid battery replacement of lithium battery has always been a matter of time for the industry. The development of lithium battery has been very mature, and it has a good performance in terms of use experience and life. Compared with traditional lead-acid batteries, it has a huge improvement; Tesla is equipped with a lithium battery auxiliary battery for the first time, which will play a leading role in the industry. In the future, the auxiliary battery of the fuel vehicle will also be replaced with a lithium battery. The author analyzes that it is expected that before 2025, the auxiliary power supply of newly manufactured cars will be The standard configuration is a lithium-ion battery. Because of its light weight, the lithium-ion battery can be supplied with a separate charger. The auxiliary power supply is likely to support independent disassembly and independent charging. At that time, it may not appear. The fuel vehicle is parked outdoors for too long in winter. Startup problem.
