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Thermal management control method and device for electric vehicle battery

An electric vehicle battery, electric vehicle technology, applied in battery/fuel cell control devices, electric vehicles, control devices, etc., can solve problems such as large vehicle damage, reduce vehicle energy consumption, optimize strategies, and optimize repeated opening Effect

Active Publication Date: 2021-12-07
SVOLT ENERGY TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a thermal management control method and device for an electric vehicle battery, so as to solve the technical problem in the related art that the switch of the compressor is controlled only by the temperature of the battery as a condition, resulting in large damage to the vehicle

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  • Thermal management control method and device for electric vehicle battery
  • Thermal management control method and device for electric vehicle battery
  • Thermal management control method and device for electric vehicle battery

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Embodiment Construction

[0021] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0022] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0023] It should be noted that the terms "first" an...

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Abstract

The invention discloses a thermal management control method and device for an electric vehicle battery. The method comprises the steps: judging whether the electric vehicle meets a first condition and a second condition, wherein the first condition is that the current temperature of an electric vehicle battery is larger than or equal to a first preset temperature, and the second condition is that a first temperature difference between the current temperature and a second preset temperature is larger than or equal to a first preset temperature value; under the condition that the electric vehicle meets the first condition and the second condition, judging whether the electric vehicle is in a charging state or not; when the electric vehicle is in the charging state, controlling a compressor of the electric vehicle to be started, wherein the starting power of the compressor is in direct proportion to the first temperature difference. The invention solves the technical problem that: in the prior art, a compressor is controlled to be switched on and off only through the battery temperature as the condition, and consequently the whole vehicle is seriously damaged.

Description

technical field [0001] The present invention relates to the field of battery control, in particular to a thermal management control method and device for an electric vehicle battery. Background technique [0002] The thermal management system of the battery plays a vital role in the safety of the battery and even the entire vehicle. The main function is to cool and heat the battery. At present, the main battery circuit thermal management system includes positive temperature coefficient thermistor (PTC), compressor, electronic expansion valve, water tank, etc. When the temperature is high, the compressor is turned on to cool the battery. [0003] Judging whether to turn on the compressor only by the temperature is not rigorous for battery cooling. Although the temperature control goal of the battery is achieved in this way, it is not a good choice for the safety and energy consumption of the vehicle. choose. At the same time, if the compressor is only turned on when the tem...

Claims

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Application Information

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IPC IPC(8): B60L58/26B60L58/27
CPCB60L58/26B60L58/27B60L2240/545Y02T10/70
Inventor 柏安明张建彪杨红新
Owner SVOLT ENERGY TECHNOLOGY CO LTD
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