Constant temperature control battery pack

Abstract

The present invention relates to the technical field of power supplies of electric vehicles, hybrid electric vehicles and electric aircrafts, especially to a constant temperature control battery pack. The constant temperature control battery pack comprises an inner box and a battery pack. Heat exchange liquid is arranged inside the inner box. A temperature detection device is arranged on an upper cover of the box. The constant temperature control battery pack further comprises a heating apparatus, a cooling apparatus, a first pipeline and a second pipeline. According to the present invention, the automatic constant temperature control system is provided for the relation between the electrochemical characteristics of the battery pack and the temperature changing, wherein the automatic constant temperature control system can be provided for heating the battery pack, cooling the battery pack, and holding the temperature of the battery pack to enable the battery pack to work in an optimal temperature range; the battery pack is prevented from influence due to the environmental temperature changing; the battery pack using is prevented from influence due to the using area; the performance of the battery pack can be provided at maximum at any temperature; the generated heat can be rapidly dissipated when the battery has the short-circuit fault, such that the misfire and the burning can not be generated; the capacity, the efficiency, the service life and the safety of the battery pack are improved; the constant temperature control battery pack provided by the present invention provides significant advances than the battery pack in the prior art.

Description

technical field [0001] The invention relates to the technical field of power sources for electric vehicles, hybrid electric vehicles and electric aircraft, in particular to a constant temperature control battery pack. Background technique [0002] The power battery is sensitive to temperature changes, and the charging or discharging ability of the power battery will be affected if the temperature is too high or too low. At present, the power battery pack is generally cooled by air or liquid, which can only cool down the battery pack, but cannot keep the battery pack warm and warm. It is difficult to reach the optimal working temperature of the battery pack and cannot maximize the performance of the battery pack. Not good, resulting in low capacity, short life and poor safety of the battery pack. [0003] Chinese patent authorization announcement number CN201294251Y discloses a battery pack shell with a constant temperature heating device, including a shell, a battery pack i...

AI Technical Summary

Problems solved by technology

At present, the power battery pack is generally cooled by air or liquid, which can only cool down the battery pack, but cannot keep the battery pack warm and warm. It is difficult to reach the optimal working temperature of the battery pack and cannot maximize the performance of the battery pack. good, resulting in low capacity, short life and poor safety of the battery pack

[0003] Chinese patent authorization announcement number CN201294251Y discloses a battery pack shell with a constant temperature heating device, including a shell, a battery pack is placed inside the shell, and a constant temperature heating device at the bottom of the shell. The constant temperature heating device includes an electric heating element and a temperature switch. The temperature switch is connected in series and connected to the charging connector of the charger. At the same time, a temperature sensor is installed on the housing. This technical solution can only heat the battery pack, but cannot cool the battery pack. When the temperature of the battery pack is too high In this case, the performance of the battery pack still cannot be brought into full play, and in severe cases, it may even cause the battery pack to catch fire and spontaneously ignite, which is not very safe.

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