Thermal management system for power battery

Abstract

The invention discloses a thermal management system for a power battery, which comprises a battery frame. A battery pack which consists of a plurality of battery units is arranged in the battery frame; a silica gel heating tape is attached between the battery frame and the battery pack; and the silica gel heating tape is electrically connected with a heating tape controller. The thermal management system for the power battery also comprises a battery management system used for performing real-time monitoring the temperature and the voltage of the battery pack; the heating tape controller is electrically connected with the battery management system. According to the thermal management system for the power battery, the disadvantages that the efficiency is low and the consumption is high by adopting traditional outer circulation heating are overcome by adopting the silica gel heating tape; the battery pack and the battery frame are heated directly, evenly and rapidly, and thereby, the energy of the power battery of a pure electromobile is effectively saved; the silica gel heating tape is wide in working temperature, is long in service life and is small in occupied space and is waterproof. The silica gel heating tape is also capable of performing a collision buffering action on the battery.

Description

technical field [0001] The invention relates to the field of battery temperature regulation, in particular to a power battery thermal management system. Background technique [0002] Car batteries, especially pure electric car batteries, when the temperature in winter is lower than the temperature required for normal use of the battery, the energy of the battery will drop rapidly as the outdoor temperature drops, and the remaining energy is often not enough to drive the car to work normally. Under low temperature, it will shorten the life of the battery, so the electric vehicle needs to preheat its battery to restore its battery energy in order to work normally in a low temperature environment. [0003] At present, the battery heating of ordinary cars is a traditional air-cooled (hot) or water-cooled (hot) mechanism, both of which are external circulation preheating systems. The external heating device heats the external cold heat transfer medium and transfers heat to the ba...

AI Technical Summary

Problems solved by technology

Among them, the heat transfer medium (air or coolant) absorbs a large amount of heat, which greatly reduces the heating efficiency, slows down the heating rate, reduces efficiency and increases power consumption; for the aforementioned shortcomings, many units have developed internal heating systems. For example, in Chinese patent CN201120180344, a battery heating device discloses a heating film device that can be attached to the battery to directly heat the battery, but the general heating film has a narrow working temperature and is not uniform enough. , the heating temperature changes greatly, the life is short, easy to wear, poor waterproof

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