Power lithium-ion battery charging set provided with equalizing charge inside

Abstract

The invention discloses a power lithium-ion battery charging set provided with equalizing charge inside, which relates to a lithium-ion battery charging device, in particular to an equalizer applied to power lithium-ion battery charging. The power lithium-ion battery charging set provided with the equalizing charge inside comprises a charging set shell, wherein a charging set main body and the equalizer are arranged in the charging set shell, and one side of the equalizer is provided with an equalizer cooling fan; and the charging set main body is connected with the equalizer, and the equalizer is connected with an external power lithium-ion battery through a battery socket. The equalizer of the charging set is not arranged in the power lithium-ion battery any more but in the charging setshell so that the space around the equalizer is increased; and the charging set is provided with the equalizer cooling fan to facilitate the heat dissipation of the equalizer, so heavy current is allowed to pass through the equalizer to increase the charging speed of the power lithium-ion battery.

Description

technical field [0001] The invention relates to a lithium-ion battery charging device, in particular to a charger applied to power lithium-ion batteries. Background technique [0002] As a new type of power technology, lithium-ion power batteries have been widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, electric minibuses and electric buses. Based on the characteristics of lithium-ion power batteries, the charging voltage should not exceed 4.2V, and the discharging voltage should not be lower than 2.6V. Due to the continuous multiple charging and discharging cycles of lithium-powered batteries, there will be differences in the monomers, so that the charging voltage of a certain monomer may exceed 4.2V and be scrapped. To achieve safe and balanced charging of lithium-powered batteries, this puts forward higher requirements for the charger. [0003] At present, a set of equalizers is generally preset on the power lithium-ion ba...

AI Technical Summary

Problems solved by technology

[0004] The existing equalizer is composed of resistor groups. Although it can ensure that the voltage of each battery cell is kept equal during charging under normal circumstances, it cannot withstand large currents, so that it cannot meet the needs of high-speed charging; it generates a lot of heat and wastes energy. Low efficiency; unstable performance, easy to burn

[0005] The existing equalizers are all installed inside the power lithium-ion battery, so there is a great limit to the temperature of the equalizer. In the case of high current, the heat of the equalizer may burn the battery, so the current intensity is formed; because The equalizer is installed inside the power lithium-ion battery, which is not easy to dissipate heat, which further limits the current intensity of the equalizer. The current intensity of the equalizer is limited, and the charging speed of the power lithium-ion battery is also limited accordingly.

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