Battery box system with heating function

Abstract

The invention relates to a battery box system with a heating function. The battery box system comprises a battery box body, a battery fixing piece and a plurality of single batteries, the plurality ofsingle batteries are divided into a plurality of battery packs, and a heating pipeline is arranged beside each battery pack. A heating reaction device is arranged beside the battery box body and comprises a mixing box, a condensing box, a heat exchanger, a filtering box, a drying box, a raw material box and a water tank, the raw material box contains the sodium acetate and puts the raw materialsinto the mixing box to be mixed with the water fed into the water tank, and the mixed aqueous solution is pumped into the condensation box to be cooled and crystallized. The heat exchanger exchanges heat, the hot air is introduced into the heating pipeline to heat the battery box body, and the aqueous solution enters the filter box to separate and convey the crystallized sodium acetate to the drying box to be dried. The interior of the battery box body is heated by the heat obtained by crystallizing the aqueous solution of sodium acetate, so that the battery can be charged and discharged normally, the fire accidents are avoided, and a tramcar can run more safely.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a battery box system with a heating function used in a low-temperature environment. Background technique [0002] Now trams are gradually using lithium batteries with higher energy density and good environmental protection as power sources. Lithium batteries divide hundreds or even thousands of single batteries into several battery units, which are connected in series and in parallel to form high-voltage, For high-current battery packs, the performance of lithium batteries at room temperature is very good. Now most of them are studying to change their high-temperature performance, but the batteries will not be usable in low-temperature environments, which will affect the use of trams. The low-temperature performance is only in the battery box. Use the heating wire to heat it up, and the heating wire can only be used to heat it during charging, but the heating function cannot be...

AI Technical Summary

Problems solved by technology

[0002] Now trams are gradually using lithium batteries with higher energy density and good environmental protection as power sources. Lithium batteries divide hundreds or even thousands of single batteries into several battery units, which are connected in series and in parallel to form high-voltage, For high-current battery packs, the performance of lithium batteries at room temperature is very good. Now most of them are studying to change their high-temperature performance, but the battery will not be usable in a low-temperature environment, which will affect the use of trams. The low-temperature performance is only in the battery box. Use the heating wire to heat it up. The heating wire can only be used to heat it during charging, but the heating function cannot be realized during the discharge (use) process, and heating through the heating wire can easily cause fire accidents.

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