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Real-time battery thermal management for electric vehicles

An electric vehicle and vehicle technology, applied in electric vehicle charging technology, electric energy management, electric vehicles, etc., can solve problems such as large safety limit and lack of efficiency

Active Publication Date: 2019-01-25
RGT UNIV OF MICHIGAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such coarse-grained control introduces a large safety margin and thus lacks efficiency

Method used

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  • Real-time battery thermal management for electric vehicles
  • Real-time battery thermal management for electric vehicles
  • Real-time battery thermal management for electric vehicles

Examples

Experimental program
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Embodiment Construction

[0045] Example embodiments will now be described more fully with reference to the accompanying drawings.

[0046] A battery management system (BMS) houses a battery pack with several cells. Such as Figure 1B As shown, the battery pack includes some interfaces (such as electrodes) and several battery modules, each battery module of the several battery modules includes a plurality of battery cells. In a battery module, all battery cells are connected in parallel, which reduces the possibility of battery failures caused by cell-level faults. The battery modules in a battery pack are usually connected in series, which enables the battery pack to provide high voltage and power.

[0047] The BMS is responsible for powering the EV while protecting hundreds or thousands of battery cells from damage and keeping them in working condition. For a BMS to perform such a function, the battery cells should be properly controlled because the safety and performance of the BMS depend on the ...

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PUM

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Abstract

A method includes: estimating internal resistance for a given cell of a plurality of cells; estimating open circuit voltage for the given cell; determining a target output voltage for the given cell; determining a target discharge current for the given cell; determining the target internal resistance of the given battery cell based on the estimated open circuit voltage of the given battery cell, the target output voltage of the given battery cell, and the target discharge current of the given battery cell; Determining a target cell temperature for the given battery cell; and controlling coolant flow adjacent the given battery cell based on the target temperature for the given battery cell.

Description

[0001] government terms [0002] This invention was made with government support under CNS1 138200 awarded by the National Science Foundation. The government has certain rights in this invention. [0003] Cross References to Related Applications [0004] This application claims priority to US Utility Application No. 14 / 676,326, filed April 1, 2015 and also claims the benefit of US Provisional Application No. 61 / 973,641, filed April 1, 2014. The entire disclosure of the above application is incorporated herein by reference. technical field [0005] The present disclosure relates to real-time battery thermal management for electric vehicles. Background technique [0006] Despite the growing popularity of electric vehicles (EVs) due to their environmental friendliness and low fuel costs, EVs have not fully replaced internal combustion engine vehicles due to the risk of battery cell explosion, the high price of the large number of battery cells required, and the limited avail...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/63H01M10/44H01M10/48H02J7/00
CPCH01M10/482H01M10/486H01M10/6551B60L1/02B60L3/0046B60L3/12B60L2240/545B60L2240/547B60L2240/549B60L2240/662B60L2240/80B60L2260/44Y02T90/16B60L50/51B60L58/16B60L58/22B60L58/26B60L50/66B60L50/64H01M10/625H01M10/613H01M10/615H01M10/633H01M2220/20B60L58/14Y02T10/70Y02T10/72Y02E60/10B60L58/24B60L58/20
Inventor 康格·G·申尤金·金
Owner RGT UNIV OF MICHIGAN