Storage battery temperature control system and method and vehicle with storage battery temperature control system and method

Abstract

The invention provides a storage battery temperature control system and method and a vehicle with the storage battery temperature control system and method. In the control system, a motor cooling pipeline is arranged on a main temperature control pipeline, a storage battery heat preservation pipeline is arranged on a first branch temperature control pipeline, a radiator is arranged on a second branch temperature control pipeline, a third branch temperature control pipeline is a direct current pipeline. The first branch temperature control pipeline, the second branch temperature control pipeline and the third branch temperature control pipeline are connected in parallel, after the three branch temperature control pipelines are connected in parallel, one ends of the three branch temperaturecontrol pipelines are connected with a liquid outlet of the motor cooling pipeline through the first flow control valve, and the other ends of the three branch temperature control pipelines are connected with a liquid inlet of the motor cooling pipeline. The controller controls the first flow control valve according to the temperature information of the motor cooling pipeline and the storage battery and the current information of the storage battery so as to change the percentage of cooling liquid entering the first branch temperature control pipeline, the second branch temperature control pipeline and the third branch temperature control pipeline. The system can better ensure the operation of the storage battery at a low temperature and improve the charging performance of the storage battery in a low-temperature environment.

Description

technical field [0001] The invention relates to the technical field of temperature control of vehicle components, in particular to a storage battery temperature control system and method and a vehicle with the same. Background technique [0002] As an important part of the whole vehicle that supports the power-on, start-up and low-voltage load work of the vehicle, the battery's charge and discharge capacity directly affects the vehicle's function, safety and user experience, especially the charge and discharge performance at low temperature is very important. [0003] In the past, the power of automobile products was mainly driven by traditional engines, and the battery was often arranged in the front cabin. Due to the heat loss of the engine of traditional fuel vehicles / PHEV / HEV and other models, the temperature of the front cabin will rise, and the battery in the front cabin will not have serious charging difficulties in a low-temperature environment. Therefore, the low-te...

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Problems solved by technology

[0004] However, more and more batteries are used in the trunk or pure electric vehicles nowadays. Since there is no heat source or insulation measures to increase the working environment temperature of the battery, the internal resistance of the battery increases and the available capacity decreases. Compared with normal temperature, it attenuates significantly, which leads to frequent battery loss at low temperature and difficulty in starting the vehicle at low temperature.

[0005] In order to improve the high-current discharge capacity of the battery at low temperature and ensure the normal power-on and start-up of the vehicle, in the prior art, the battery is generally improved by adding a thermal insulation device to the battery, or pre-heating the battery before using the vehicle, etc. low-temperature start-up performance, but in this way, each heating element needs to use an external power supply or consume the electric energy of the vehicle power supply itself for heating. When the battery itself is insufficient, this will cause the above-mentioned structures to work abnormally, and then make the above-mentioned The method can't complete the heating of the battery at low temperature

Moreover, the above method will generate additional energy consumption, which is not conducive to energy saving and increases the cost

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