Lithium ion super composite capacitor and vehicle-mounted emergency call system

Abstract

The invention provides a lithium ion super composite capacitor and a vehicle-mounted emergency call system. The lithium ion super composite capacitor comprises a capacitor cover group, a shell matchedwith the capacitor cover group and a capacitor winding core arranged in the shell, wherein the capacitor winding core has a positive electrode, a negative electrode, a positive lug connecting the positive electrode and a positive column, a negative plug connecting the negative electrode and the shell and an electrolyte poured in the shell; a positive electrode active material comprises a lithiumbattery ternary material; the negative electrode is coated with a negative electrode active material, a dispersant, an adhesive and a conductive agent, and the negative electrode active material comprises one or two of fluorine-doped carbon-coated manganese oxide or fluorine-doped carbon-coated zinc oxide and activated carbon. The beneficial effects are that the lithium ion super composite capacitor is low in self-discharge rate, long in service life, capable of ensuring a stable working state and high in pulse current. The vehicle-mounted E-call (Emergency Call) system loaded with the lithiumion super composite capacitor exists independently for more than 10 years, and modules of the vehicle-mounted E-call system are ensured to be powered at any time.

Description

technical field [0001] The invention relates to the field of electrochemistry, in particular to a lithium-ion super composite capacitor and a vehicle-mounted emergency rescue system. Background technique [0002] Car emergency rescue system (emergency call, referred to as E-call) is installed on the car at present, when traffic accident occurs, emergency call signal is triggered automatically, or under the situation that the driver has a situation but has not lost consciousness, is equipped with On the vehicle of the E-call system, the satellite positioning receiver obtains information such as the location of the vehicle in the accident, and through a dedicated cellular network, the communication module establishes data communication and voice calls with the public security answering point, and the data communication is used to send passengers, accident information, etc. A set of the most streamlined vehicle data (Minimum Set of Data., MSD) such as time of occurrence and imp...

AI Technical Summary

Problems solved by technology

[0006] The negative electrode material of lithium-ion capacitors is made of materials that can reversibly carry lithium ions. Generally, there are graphite, various carbon materials, polyacene substances, tin oxide compounds and silicon oxide compounds. At present, graphite negative electrode materials are the most widely used. Graphite has a high degree of crystallinity and a highly anisotropic layered structure, and the directionality of lithium ion intercalation is strong, which makes the performance of graphite poor under high current charge and discharge. Not only that, in the charge and discharge cycle engineering, the interlayer spacing of graphite changes relatively quickly. Large, it will cause lithium and organic solvents to intercalate between the graphite layers, which will easily cause the graphite layer to gradually peel off and the graphite particles to crack and pulverize, thus affecting the cycle performance of the battery

Images