Solar energy compensated electric vehicle battery vehicle-mounted charging heating device

Abstract

The invention discloses a solar energy compensated electric vehicle battery vehicle-mounted charging heating device comprising a power battery pack and a power battery pack heating system, wherein the power battery pack heating system comprises a heating film, a temperature sensor, a power supply, a distribution box and a battery management system; the power battery pack is wrapped by the heating film; the temperature sensor is arranged in the power battery pack and is connected with the battery management system; the distribution box comprises a battery heating loop; the heating film is connected with the battery heating loop; the battery management system controls switch-off and switch-on of the power supply and battery heating loop; the power supply comprises a vehicle-mounted charging power supply and a solar compensation power supply; the solar compensation power supply is connected with a solar power supply control unit; and the solar power supply control unit is connected with an illumination intensity detection unit. The solar energy compensated electric vehicle battery vehicle-mounted charging heating device effectively guarantees that the power battery pack can be charged at proper temperature and reduces the environmental pollution by utilizing the solar compensation power supply.

Description

technical field [0001] The invention belongs to the technical field of thermal management of automobile power battery packs, and in particular relates to an on-board charging and heating device for electric vehicle batteries with solar energy compensation. Background technique [0002] With the depletion of petroleum resources as a non-renewable energy source, and in order to reduce the pollution of fuel vehicles to the environment, electric vehicles have become the current research direction and focus of development in the automotive industry. The biggest feature of electric vehicles (pure electric vehicles and hybrid vehicles) is the use of power batteries to store energy and release it during driving. Therefore, power batteries are a key part of electric vehicles. [0003] At present, the power batteries commonly used in electric vehicles include lead-acid batteries, nickel-cadmium batteries, nickel-metal hydride batteries and lithium-ion batteries. Due to secondary envir...

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Problems solved by technology

[0004] At present, the power battery pack heating system usually adopts two structural forms: wind heat and water heat, but both have certain defects. The heating effect of the wind heat device is limited in the low temperature environment in winter, and the complete use of air-conditioning wind heating will increase the power of the power battery. Energy consumption, and the battery pack is in a closed state, the effect of wind heat cannot be reflected in a short time; the structure of the water heating device is complex, the cost is high, and once the water heating pipe breaks, leakage will easily cause short circuit and other problems, causing battery and other equipment damage, so water heating devices are less used in current electric vehicles

Moreover, whether it is wind heat or water heat, it is generally heated by direct power supply, which also increases the energy consumption of the car.

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