Battery pack, battery pack control method and vehicle

Abstract

The invention provides a battery pack, a battery pack control method and a vehicle, and relates to the technical field of vehicles. The battery pack of the present invention comprises: a battery module; a shell which covers the outer side of the battery module; and a heat preservation layer which is positioned between the shell and the battery module and is internally provided with at least one heat preservation unit. Each heat preservation unit comprises a heat preservation structure and a transmission mechanism; the heat preservation structure comprises a first heat insulation layer, a heatconduction layer and a second heat insulation layer which are sequentially arranged, and the two opposite ends of each heat conduction layer protrude out of the end face of the corresponding first heat insulation layer and the end face of the corresponding second heat insulation layer; and the transmission mechanism is connected with the at least one heat preservation structure and used for driving the heat preservation structure connected with the transmission mechanism to rotate, so that each heat preservation structure is switched between a heat preservation state and a heat transfer state.The heat management function of the battery pack can be met as required, timely heat dissipation of the battery pack at high temperature is ensured, the safety of the battery pack is ensured, meanwhile, the heat preservation performance of the battery pack at low temperature is improved, the endurance mileage is prolonged, and customer complaints are reduced.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to a battery pack, a battery pack control method and a vehicle. Background technique [0002] As one of the main power sources of new energy vehicles, batteries are very sensitive to temperature because of the material properties of the batteries themselves. Excessively high battery temperature will not only reduce the service life, but also cause thermal runaway in severe cases. If the battery temperature is too low, the activity of internal substances will be reduced, and the charge and discharge performance will be poor. Therefore, doing a good job of thermal management of the battery can not only improve the performance of the battery and ensure the safe use of the battery, but also enhance the power of the vehicle and ensure the safety of people and vehicles. It is a key technology for new energy vehicles. At present, when the ambient temperature is low, there is a large temp...

AI Technical Summary

Problems solved by technology

[0003] An object of the first aspect of the present invention is to provide a battery pack that solves the problem of inability to balance thermal insulation and heat dissipation in the prior art

[0004] Another purpose of the first aspect of the present invention is to solve the problem that the thermal insulation structure in the prior art cannot be freely switched between the thermal insulation state and the heat transfer state

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