Method for controlling temperature of battery system, temperature control gateway, and temperature control system
A battery system and battery pack technology, applied in battery temperature control, secondary batteries, circuits, etc., can solve problems such as high cost, lower system reliability, and complex control system algorithms, so as to improve reliability, improve development quality and Efficiency, cost reduction effects
Active Publication Date: 2018-09-14
GUANGZHOU AUTOMOBILE GROUP CO LTD
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Problems solved by technology
Many researches on the cooling and heating of the battery system by the control system are either that the algorithm of the control system is very complicated, which makes the cost high and reduces the reliability of the system; or it cannot make the heating and cooling achieve good results
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[0023] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, and do not limit the protection scope of the present invention.
[0024] According to the theory of heat transfer, the convective heat transfer coefficient of gas is far less than that of liquid, and the convective heat transfer capacity of liquid and solid contact is stronger. Regardless of whether air or liquid heats and cools the battery system, the battery system mainly has the following functions: accurate measurement and monitoring of battery temperature, effective heat dissipation and ventilation when the temperature of the battery pack is too high, and rapid heating under low temperature conditions. The battery pack can work no...
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The invention relates to a method for controlling a temperature of a battery system, a temperature control gateway and a temperature control system. The method comprises the following steps of acquiring a temperature of a battery pack, an ambient temperature and a water inlet / outlet temperature of a cooling loop; judging a mode in which the battery system is according to the water inlet / outlet temperature, the temperature of the battery pack and the ambient temperature; switching the cooling loop to a slow cooling loop if the battery system is in a slow cooling mode, closing a refrigerant, and controlling a water pump to work at a first speed corresponding to the slow cooling mode; switching the cooling loop to a quick cooling loop if the battery system is in a rapid cooling mode, controlling the refrigerant to enter the cooling loop, and controlling the water pump to work at a second speed corresponding to the quick cooling mode; and switching the cooling loop to a heating loop if the battery system is in a heating mode, closing the refrigerant to enter, controlling the water pump to work at a third speed corresponding to the heating mode, setting a target temperature required to be reached by the battery pack, and controlling a high-pressure liquid heater in a the heating loop to do heating operation. According to the method disclosed by the embodiment of the invention, accurate control on the temperature of the battery system is achieved, and the reliability is improved.
Description
technical field [0001] The invention relates to the field of battery control, in particular to a method for controlling the temperature of a battery system, a temperature control gateway and a temperature control system. Background technique [0002] As the main energy storage component of electric vehicles, the battery system is a key component of electric vehicles and directly affects the performance of electric vehicles. Under different driving conditions such as high speed, low speed, acceleration, and deceleration, the battery will be discharged at different rates, and different heat will be generated at different heat generation rates. In addition, time accumulation and spatial influence will generate uneven heat. Aggregation, if the battery pack of an electric vehicle cannot be ventilated and dissipated in time at high temperature, it will cause the temperature of the battery system to be too high or the temperature distribution will be uneven, which will eventually r...
Claims
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IPC IPC(8): H01M10/617H01M10/63
CPCH01M10/617H01M10/63Y02E60/10
Inventor 陈彩霞黄少堂宫成张海焕张宗煜范明
Owner GUANGZHOU AUTOMOBILE GROUP CO LTD