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New-energy automobile power battery thermal management device and method

A new energy vehicle, power battery technology, applied in battery/fuel cell control devices, electric vehicles, secondary batteries, etc., can solve the problems of short cruising range, unbalanced thermal management, weak working temperature adjustment ability, etc., and achieve high efficiency Thermal management, improving battery life and efficiency, addressing the effects of short cruising range

Inactive Publication Date: 2018-08-31
CHANGSHU INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The operating temperature of lithium batteries is one of the key factors restricting the current mileage, safety and reliability of new energy vehicles. If the temperature is too high or too low, the battery capacity, mileage and reliability will decrease. Therefore, special battery thermal management is required. System to solve the problem of short mileage of new energy vehicles under different working conditions
Commonly used new energy vehicle battery thermal management systems generally adopt a single air-cooled or water-cooled working mode. However, this thermal management method cannot meet the requirements of efficient and balanced heating and heat dissipation. The specific performance has the following defects: First, the extremely harsh environment The lower thermal management efficiency is low, and the thermal management effect is not obvious; second, the battery pack has a large number of single cells, and the thermal management is unbalanced; the thermal management system consumes a lot of energy, mainly relying on the power battery for power supply; poor temperature regulation

Method used

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  • New-energy automobile power battery thermal management device and method
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  • New-energy automobile power battery thermal management device and method

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Embodiment Construction

[0028] In order to enable the public to fully understand the technical essence and beneficial effects of the present invention, the applicant will describe in detail the specific implementation of the present invention below in conjunction with the accompanying drawings, but the applicant's description of the embodiments is not a limitation to the technical solution. Changes in the form of the inventive concept rather than in substance should be regarded as the protection scope of the present invention.

[0029] see figure 1, the present invention relates to a new energy vehicle power battery thermal management device, including a controller 1, a temperature relay module 2, an air intake grille 3, a fan 4, a vehicle air conditioning system 5, a first temperature sensor 6, a power battery pack 7, Water cooling plate 8 , PTC heater 9 , electronic water pump 10 , expansion tank 11 , heat exchanger 12 , thermoelectric battery module 13 , voltage sensor 14 , second temperature sens...

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Abstract

The invention relates to a new-energy automobile power battery thermal management device and method, and belongs to the technical field of new-energy automobile battery management. The method comprises the following steps that a first temperature sensor detects the real-time temperature T of a power battery pack and presets four temperature grades for the real-time temperature T, a second temperature sensor detects the temperature difference -T between the high and low temperature ends of a thermobattery module, and a voltage sensor detects the temperature difference voltage U of the thermobattery module; a controller presets the critical temperature of the thermobattery module as Th, the critical voltage is Uh, the low temperature end temperature is T1, the high temperature end temperature T2, and if it is determined that -T is larger than Th and U is larger than Uh, a temperature relay module is controlled to drive the thermobattery module to act; the controller judges the real-timetemperature T of the power battery pack on the basis of the preset temperature grades. The device has the advantages that air cooling and water cooling are organically combined through an optimal control strategy, efficient thermal management of power batteries is achieved, the battery life can be prolonged, and the using efficiency can be improved.

Description

technical field [0001] The invention belongs to the technical field of new energy vehicle battery management, and in particular relates to a new energy vehicle power battery heat management device and a management method thereof. Background technique [0002] As a new energy vehicle, electric vehicles require large motor power, strong power, fast speed, and long running time. Therefore, several or even dozens of battery packs are required to be arranged in series and parallel to increase the energy and storage capacity of the battery. Lithium batteries have been widely used in the field of electric vehicles due to their advantages of high energy density, high number of repeated cycles, light weight and environmental protection. The operating temperature of lithium batteries is one of the key factors restricting the current mileage, safety and reliability of new energy vehicles. If the temperature is too high or too low, the battery capacity, mileage and reliability will decr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/613H01M10/615H01M10/625H01M10/633H01M10/637H01M10/6563H01M10/6568H01M10/663B60L11/18
CPCH01M10/613H01M10/615H01M10/625H01M10/633H01M10/637H01M10/6563H01M10/6568H01M10/663B60L58/26B60L58/27Y02T10/70Y02E60/10
Inventor 王尚陈庆樟王正义王康
Owner CHANGSHU INSTITUTE OF TECHNOLOGY
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