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Air and coolant coupled electric vehicle battery pack thermal management system

A thermal management system and technology for electric vehicles, applied in the field of thermal management systems for electric vehicle battery packs, can solve the problems of low temperature consistency of battery packs, lack of battery pack thermal insulation function, poor cooling conditions at the end of pipes, etc., and achieve good heat dissipation. effect, improve high temperature heat dissipation and low temperature heat preservation ability, and improve the effect of temperature consistency

Pending Publication Date: 2018-11-23
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technology uses coolant to take heat out of the battery pack, but the pipes in the cold plate are too long, the temperature rise in the coolant flow is too high, and the cooling conditions at the end of the pipes are poor, resulting in low temperature consistency inside the battery pack
The Patent Office of the State Intellectual Property Office of China published a publication number CN205621775U on October 5, 2016, titled "A multi-export electric vehicle battery air-cooled battery box equipped with heat sinks"; Fins are added to the air duct formed by heat sinks between them, and the heat is taken away by the flow of air, but the heat dissipation efficiency is low when the ambient temperature is high, and it does not have the heat preservation function of the battery pack

Method used

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  • Air and coolant coupled electric vehicle battery pack thermal management system
  • Air and coolant coupled electric vehicle battery pack thermal management system
  • Air and coolant coupled electric vehicle battery pack thermal management system

Examples

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Effect test

Embodiment 1

[0043]The implementation process of the present invention applied to 12 vehicle-mounted battery cells is described in detail below in conjunction with the accompanying drawings:

[0044] Such as figure 1 , figure 2 , Figure 14 As shown, the present invention is installed on the automobile body in combination with the vehicle-mounted battery monomer, and is connected with the electronic control unit ECU8 of the automobile. 2. Battery cooling module, air inlet guide cover 3, air outlet guide cover 4-1, air outlet guide cover 4-2, thermocouple 7-1, thermocouple 7-2, thermocouple 7-3, regulator Speed ​​fan 9 is formed;

[0045] Such as figure 1 , figure 2 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 10 , Figure 11 , Figure 12 , Figure 13 As shown, the battery box 1 is a rectangular parallelepiped open shell with a double-layer shell, a cavity is formed between the two layers of the double-layer shell, and a phase-change material injection hole 1-1 i...

Embodiment 2

[0055] The implementation process of the present invention applied to 16 vehicle-mounted battery cells is described in detail below in conjunction with the accompanying drawings:

[0056] Such as figure 2 , Figure 14 , Figure 15 As shown, the present invention is combined with the vehicle-mounted battery monomer and installed on the automobile body, and is connected with the electronic control unit ECU8 of the automobile. End cover 2, battery cooling module, air inlet guide cover 3, air outlet guide cover 4-1, air outlet guide cover 4-2, thermocouple 7-1, thermocouple 7-2, thermocouple 7-3 , speed-regulating fan 9 components;

[0057] Such as figure 2 , Figure 5 , Figure 6 , Figure 7 , Figure 10 , Figure 11 , Figure 12 , Figure 13 , Figure 15 , Figure 16 As shown, the battery box 1 is a rectangular parallelepiped open shell with a double-layer shell, a cavity is formed between the two layers of the double-layer shell, and a phase-change material injec...

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Abstract

The invention relates to the technical field of electric vehicle power battery pack thermal management, in particular to an air and coolant coupled electric vehicle battery pack thermal management system. The system is combined with vehicle-mounted single batteries to be installed on a vehicle body, connected with an electronic control unit (ECU) of the vehicle and composed of a battery box, a phase change material, a battery box end cover, battery cooling modules, an air inlet duct guiding housing, air outlet duct guiding housings, thermocouples and a speed regulating fan; and one thermocouple and the speed regulating fan are installed at an air inlet of a battery box end cover, the thermocouples are installed at air outlets of the battery end cover, the thermocouples are connected with the electronic control unit (ECU) of the vehicle, and the ECU is connected with the speed regulating fan and controls the rotating speed of the speed regulating fan. According to the system, the temperature consistency between the surfaces of the vehicle-mounted single batteries and the vehicle-mounted single batteries is improved, and the thermal exchange speed between air and coupling cooling plates is increased; and then the high-temperature thermal dissipation capacity and the low-temperature thermal preservation capacity of the system are improved, and the good thermal dissipation effect can be always achieved under different working conditions.

Description

1. Technical field [0001] The invention relates to the technical field of thermal management of electric vehicle power battery packs, in particular to an electric vehicle battery pack heat management system coupled with air and cooling fluid. 2. Background technology [0002] Driven by the energy crisis and environmental pollution problems, new energy vehicles have developed rapidly, and hybrid vehicles and pure electric vehicles are typical representatives. In this type of car, the on-board battery cells are usually connected in series and parallel to form a battery pack to provide suitable voltage and sufficient power. During the operation of the car, the chemical reaction inside the battery and the internal resistance of the battery itself will cause the temperature of the on-board battery unit to rise continuously and the temperature of each part on the on-board battery unit to be inconsistent; The differences in battery internal resistance and internal chemical composi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/613H01M10/615H01M10/617H01M10/625H01M10/653H01M10/6554H01M10/6563H01M10/6567
CPCH01M10/613H01M10/615H01M10/617H01M10/625H01M10/653H01M10/6554H01M10/6563H01M10/6567Y02E60/10
Inventor 王亚楠练晨何鑫厉青峰李华刘玥
Owner SHANDONG UNIV
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