Battery pack temperature control device, temperature control method and vehicle

Abstract

The invention discloses a battery pack temperature control device, which comprises a battery pack module, an air heating module, a heat exchange cooling module, a temperature adjusting medium switching module, a temperature sensing module and a control module, wherein the battery pack module comprises a battery pack body; the air heating module is used for heating air and circulating hot air between the air heating module and the battery pack body through a gas pipeline; the heat exchange cooling module is used for controlling a cooling liquid to circulate through a liquid pipeline between the heat exchange cooling module and the battery pack body, and cooling the cooling liquid; the temperature adjusting medium switching module is used for switching the type of a temperature adjusting medium in the battery pack body; the temperature sensing module is used for detecting an environment temperature at which the battery pack module is; and the control module controls the air heating module, the heat exchange cooling module and the temperature adjusting medium switching module according to the environment temperature. According to the battery pack temperature control device, a battery pack can be adjusted to work at an optimum temperature and the service life of the batteries is prolonged. The invention further discloses a battery pack temperature control method and a vehicle.

Description

technical field [0001] The invention belongs to the technical field of vehicles, and in particular relates to a battery pack temperature control device, a battery pack temperature control method and a vehicle including the battery pack temperature control device. Background technique [0002] With today's traditional energy crisis and environmental pollution becoming more and more serious, the development of electric vehicles using new energy as power has attracted more and more attention. Ambient temperature has a great influence. For example, when charging and discharging in a high temperature environment, the generation rate of irreversible reactants inside the battery is accelerated. This irreversible reactant causes the available capacity of the battery to decrease. When the available capacity of the battery decays to the rated capacity of the battery 60%, the battery life is over; when the battery is charged and discharged in a low temperature environment, the internal...

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Problems solved by technology

[0002] With today's traditional energy crisis and environmental pollution becoming more and more serious, the development of electric vehicles using new energy as power has attracted more and more attention. Ambient temperature has a great influence. For example, when charging and discharging in a high temperature environment, the generation rate of irreversible reactants inside the battery is accelerated. This irreversible reactant leads to a decrease in the available capacity of the battery. When the available capacity of the battery decays to the rated capacity 60%, the battery life is over; when the battery is charged and discharged in a low temperature environment, the internal resistance of the battery increases, resulting in a decrease in charge and discharge efficiency, a decrease in the dischargeable capacity, and a decrease in the output voltage of the battery, which affects the normal operation of the load and damages the battery. have some damage

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