Dynamic control method and system for flow rate of cooling liquid of power battery

A dynamic control and power battery technology, applied in battery temperature control, secondary batteries, circuits, etc., can solve the problems of work performance damage, reduced cruising range, and high battery module temperature, reducing energy consumption, reducing energy consumption, The effect of improving the cruising range

Pending Publication Date: 2022-08-05
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0003] In order to solve the damage to the working performance of the power battery of the electric vehicle at a high temperature for a long time, the battery pack of the existing electric vehicle is designed with a cooling system, and the flow rate of the coolant in the cooling system will affect the heat dissipation effect of the battery pack
If the coolant flow rate is too small, the overall temperature of the battery module will be too high, and if the flow rate is too high, the energy consumption of the coolant pump will be increased
The energy consumed by the coolant pump is provided by the battery. The greater the energy, the less energy the battery provides to drive the electric vehicle, which ultimately leads to a reduction in cruising range.

Method used

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  • Dynamic control method and system for flow rate of cooling liquid of power battery
  • Dynamic control method and system for flow rate of cooling liquid of power battery

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Embodiment Construction

[0041] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0042] In order to reduce the energy consumption of the cooling liquid pump and effectively control the cooling liquid flow rate of the temperature of the battery module, the present invention proposes a dynamic control system for the cooling liquid flow rate of the power lithium battery. The dynamic control system includes a battery management system BMS, an environment Temperature detector, initial temperature determination module, e...

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Abstract

The invention relates to the field of electric vehicle battery management systems, in particular to a dynamic control method and system for the flow speed of power battery cooling liquid, and the system comprises a battery management system BMS, an environment temperature detector, an initial temperature determination module, an outer circulation module and a flow control valve module. The outer circulation module comprises a cooling liquid water pump and a cooling liquid flow speed adjusting controller, and according to the experimental simulation result, the power consumption of the cooling system can be reduced by 30% or above by means of the control scheme.

Description

technical field [0001] The invention relates to the field of electric vehicle battery management systems, in particular to a dynamic control method and system for a cooling fluid flow rate of a power battery. Background technique [0002] As more and more countries begin to pay attention to energy and environmental issues, the electric vehicle industry is developing rapidly, sales of electric vehicles are increasing year by year, and their overall performance is also improving, but there are still some shortcomings. question. [0003] In order to solve the damage to the working performance caused by the long-term high temperature of the power battery of the electric vehicle, the battery pack of the existing electric vehicle is designed with a cooling system, and the flow rate of the coolant in the cooling system will affect the heat dissipation effect of the battery pack. . If the coolant flow rate is too small, the overall temperature of the battery module will be too hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/613H01M10/625H01M10/63H01M10/6567
CPCH01M10/613H01M10/625H01M10/6567H01M10/63Y02T10/70
Inventor 禄盛徐闻政刘欣悦朴昌浩马莹邓聪颖
Owner CHONGQING UNIV OF POSTS & TELECOMM
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