ЭКСПЕРИМЕНТАЛЬНЫЕ ИССЛЕДОВАНИЯ ФУНКЦИОНАЛЬНЫХ ХАРАКТЕРИСТИК ТЯГОВЫХ АККУМУЛЯТОРОВ ГЕЛЕВОГО ТИПА

Abstract

The results of an experimental assessment of the functional characteristics of gel-type traction batteries (AGBT) for small-sized transport and technological vehicles (TVT), depending on various load modes and temperature conditions, are presented. Experimental assessment of the battery life of AGBT in operation and their discharge type characteristics at various storage and operating temperatures. An assessment of changes in the voltage level of an AgBT sample of type RuTrike 6-EVF-32 at room temperature and in a freezer (from -7.8 to -20.2 °C) with a connected electrical load and in storage mode was carried out at the first stage. Temperature fluctuations were set randomly to simulate real operating conditions of the TTS in the cold season. At the second stage of testing, the continuous operation time of a set of five battery packs as part of a small-sized vehicle, the D4 1800 tricycle, was assessed. The tests were carried out in the early spring on the territory of the Federal National Research Center VIM. Both batteries were discharged by only 0.05 V during four days of studying self-discharge characteristics at different temperatures. After removing the load, the batteries are regenerated to a voltage of 12 V (50% charge). A cold battery discharges faster by 2-3 hours, but when the load is removed it is regenerated faster. The tricycle can travel 22.21 km at a speed of 13.3 km/h on a single AkBg charge. The voltage drop across the batteries has an almost linear dependence on the distance traveled and the test time. Timely charging of the battery, as well as the provision of design and technological measures for insulating the battery pack, is recommended for operation in the cold season. Tests with cycles of movement and stopping to assess the influence of the battery’s ability to self-recovery to increase the duration of movement needs to be continued, as well as testing for the duration of recovery after turning on/removing the load, depending on the magnitude of the residual stress.