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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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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to provide a vehicle battery self-heating method and device to solve the technical problems of complex structure, high cost and low heating efficiency in the vehicle battery heating scheme in the prior art

Method used

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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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Embodiment Construction

[0049] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the simplification of the present invention, rather than indicating or implying that the referred device or component must have a specific orientation, use a specific orientation construction and operation, therefore, should not be construed as limiting the invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance. Wherein, the terms "first position" and "second position" are two different posi...

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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...

Claims

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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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