Lithium battery device with fin heat dissipation structure

Abstract

The invention provides a lithium battery device with a fin heat dissipation structure. The lithium battery device comprises a lithium battery pack, an electrolytic capacitor connected with the lithium battery pack in parallel, a lithium battery field effect transistor connected with the lithium battery pack in series, a capacitor field effect transistor connected with the electrolytic capacitor in series, and an isolating switch power supply based on a DSP (Digital Signal Processor) module, the electrolytic capacitor is used as an auxiliary backup power supply and is in communication connection with the state monitor; the DSP module is used for controlling whether the electrolytic capacitor is started or not and controlling the working time to maintain the stable power supply of the lithium battery device; an odd number of lithium battery piece accommodating cavities which are arranged side by side are accommodated in the lithium battery pack shell; a phase change material is arranged in the lithium battery piece accommodating cavity; and fin-shaped heat dissipation plates vertical to the long edge direction of the lithium battery pieces are arranged among the plurality of lithium battery piece accommodating cavities. Aging faults of the electrolytic capacitor can be avoided, the service life of the electrolytic capacitor serving as an auxiliary power supply for maintaining stable power supply of the lithium battery device is prolonged, and uninterrupted power supply of the lithium battery pack device is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of lithium battery equipment, and in particular relates to a lithium battery device with a fin heat dissipation structure. Background technique [0002] Lithium battery, as a kind of storage battery power supply equipment, will run out of power with the prolongation of use time. Due to the lack of intelligent monitoring equipment or means in the prior art, lithium battery can easily cause sudden power failure without the user's knowledge. , or due to long-term use, charging and discharging are not standardized, resulting in internal short circuit of the lithium battery or reduction in the life of the lithium battery, or in the case of internal hidden faults, the lithium battery continues to release too much heat during long-term use, and cannot be dissipated to the outside environment in time In the process, the internal organic material system reaches the fire temperature point, causing accidents such as fi...

AI Technical Summary

Problems solved by technology

[0002] Lithium battery, as a kind of storage battery power supply equipment, will run out of power with the prolongation of use time. Due to the lack of intelligent monitoring equipment or means in the prior art, lithium battery can easily cause sudden power failure without the user's knowledge. , or due to long-term use, charging and discharging are not standardized, resulting in internal short circuit of the lithium battery or reduction in the life of the lithium battery, or in the case of internal hidden faults, the lithium battery continues to release too much heat during long-term use, and cannot be dissipated to the outside environment in time In the process, the internal organic material system reaches the fire temperature point, causing accidents such as fire and explosion.

Lithium batteries will fail with a certain probability during use or storage, including capacity decay (diving), short cycle life, increased internal resistance, abnormal voltage, lithium precipitation, gas production, liquid leakage, short circuit, deformation, thermal runaway, etc. , which seriously reduces the performance, consistency, reliability and safety of lithium batteries

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