Radiating system and radiating method for lithium ion battery pack

Abstract

The invention relates to a radiating system and a radiating method for a lithium ion battery pack. The radiating system comprises a water pump, a radiator and a circulation pipeline fixed in the battery pack, wherein the liquid outlet of the water pump is connected with the liquid inlet of the radiator through a pipeline; the liquid outlet of the radiator is connected with the liquid inlet of the circulation pipeline through the pipeline; the liquid outlet of the circulation pipeline is connected with the liquid inlet of the water pump through the pipeline; and the water pump and the circulation pipeline are used for radiating the battery pack through a cooling liquid. According to the radiating system and the radiating method provided by the invention, efficient thermal management can be carried out, so that it is ensured that the lithium battery system can run within the most reasonable temperature range, and the cycle life of the battery can be prolonged; the on-off of a fan is directly controlled through a signal emitted from a battery management system; the fan is not controlled by a vehicle control unit, so that the workload of the vehicle control unit is reduced; and the circulation pipeline adopts a flat shape, and is fixed in the battery pack with a continuous S shape, so that the tight contact between the circulation pipe and the batteries in each is ensured, and the radiating effect of the battery pack is improved consequently.

Description

technical field [0001] The invention relates to the technical field of heat dissipation for lithium battery packs of electric vehicles, in particular to a heat dissipation system for lithium ion battery packs and a heat dissipation method thereof. Background technique [0002] With the country's continuous support for new energy vehicles, my country's new energy vehicles have achieved rapid development. Both the production and sales of new energy vehicles and key components such as lithium batteries and motors have achieved great development. my country's The new energy vehicle industry has begun to take shape, showing the country's determination to develop new energy vehicles. However, there is still a gap between the technical level of lithium batteries in my country and the level of lithium batteries in foreign countries. In terms of battery grouping and thermal management, additional measures need to be added to ensure the normal operation of lithium batteries, such as in...

AI Technical Summary

Problems solved by technology

Then, as far as the current lithium battery level is concerned, it is not completely realistic to achieve the level of protection IP67 fully enclosed. When making the fully enclosed IP67 protection level, the heat dissipation of the battery pack must also be taken into account, but there is no such thing in China at present. A feasible cooling solution to solve the heat dissipation problem of battery pack

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