Vehicle battery self-heating method and device

A self-heating, battery technology, used in battery/fuel cell control devices, electric power devices, power devices, etc., can solve the problems of high cost, low heating efficiency, complex structure, etc., achieve fast heating, simplified structure, high heating The effect of efficiency

Pending Publication Date: 2021-11-16
恒大恒驰新能源汽车研究院(上海)有限公司
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Problems solved by technology

[0004] The present invention aims to provide a vehicle battery self-heating method and device to solve the technical pr

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  • Vehicle battery self-heating method and device
  • Vehicle battery self-heating method and device
  • Vehicle battery self-heating method and device

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[0049] The embodiments of the present invention will be further described below with reference to the drawings. In the description of the present invention, it is to be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "within", "outside", etc. The orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings, which is intended to facilitate the description of the present invention, rather than indicating or implying that the device or component must have a particular orientation. Construct and operation, so it is not understood to be the limitation of the invention. Moreover, the term "first", "second", "third" is only used to describe the purpose, and cannot be understood as an indication or implies relative importance. Wherein, the term "first position" and "second position" are two different locations.

[0050]In the description of the present invention, it should be noted...

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Abstract

The invention provides a vehicle battery self-heating method and device, and the method comprises the steps: in responce to a request signal for heating a battery, a periodic signal with a set frequency is output to a vehicle battery self-heating device; an LC oscillation unit in the vehicle battery self-heating device is connected with a battery; the periodic signal comprises a first electric signal and a second electric signal which are alternate, and the first electric signal controls the LC oscillation unit and the battery to form a charging loop; the second electric signal controls the LC oscillation unit and the battery to form a discharge loop; and the set frequency is greater than the resonant frequency of the LC oscillation unit. By adopting the scheme provided by the invention to perform self-heating on the battery, a PTC (Positive Temperature Coefficient) heater does not need to be additionally arranged, the structure of the battery system is simplified, the cost is reduced, and on the other hand, the self-heating mode of the battery has higher heating efficiency and better uniformity.

Description

technical field [0001] The present invention relates to the technical field of vehicle battery temperature control, in particular to a vehicle battery self-heating method and device. Background technique [0002] New energy vehicles with electric energy as the main power source have the advantages of zero emissions, low noise, and low travel costs. They are more and more widely used and become the main direction of future automobile development. However, because the performance of the vehicle battery will attenuate in a low temperature environment, the cruising range and power performance of the vehicle are restricted, especially in winter. [0003] Currently, PTC (Positive Temperature Coefficient) heaters are used to heat vehicle batteries. A PTC heater and a circulating water circuit are installed in the vehicle, and the circulating water circuit can exchange heat with the vehicle battery. When the ambient temperature is low, the circulating water circuit is heated by th...

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Application Information

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IPC IPC(8): B60K1/00B60L58/27
CPCB60K1/00B60L58/27B60K2001/008Y02T10/70
Inventor 陈长红孙纯哲龚晓峰庄朝晖王俊文
Owner 恒大恒驰新能源汽车研究院(上海)有限公司
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