A 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 covering the outside of the battery module; an insulating layer located between the shell and the battery module, and at least one insulating unit is arranged in the insulating layer. Each heat preservation unit includes a heat preservation structure, and the heat preservation structure includes a first heat insulation layer, a heat conduction layer and a second heat insulation layer arranged in sequence, and two opposite ends of the heat conduction layer protrude from the first heat insulation layer and the second heat insulation layer. The end surface of the heat layer; the transmission mechanism, the transmission mechanism is connected with at least one heat preservation structure, and is used to drive the heat preservation structure connected to it to rotate, so that each heat preservation structure is switched between the heat preservation state and the heat transfer state. The invention realizes the thermal management function of the battery pack on demand, ensures the timely heat dissipation of the battery pack at high temperature, ensures the safety of the battery pack, improves the thermal insulation performance of the battery pack at low temperature, prolongs the cruising range, and reduces customer complaints.

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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