Vehicle hvac and battery thermal management

A HVAC and battery technology, which is applied to electric vehicles with internal combustion engines and fuel cell vehicles, can solve problems such as difficulties, low heat dissipation, and low heat transfer coefficient, and achieve the effect of maximizing battery life

Inactive Publication Date: 2009-10-07
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But these systems have drawbacks such as low heat dissipation due to low heat transfer coefficient of air, interior cabin noise, vibration and harshness (NVH) due to battery fan motor noise and air jet noise when the vehicle is parked Limited battery cooling capacity after sun exposure (due to high air temperature in the cabin at the start of the drive cycle) and ensuring that the air inlet grille between the cabin and the battery thermal system is not accidentally blocked by vehicle occupants (resulting in battery air cooling Difficulty with reduced or no flow)

Method used

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  • Vehicle hvac and battery thermal management
  • Vehicle hvac and battery thermal management
  • Vehicle hvac and battery thermal management

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] refer to figure 1 , the portion of the vehicle generally indicated at 20 includes the heating, ventilation and air conditioning (HVAC) and battery thermal systems 22 of the vehicle. The system 22 includes an air conditioning section 24 having a refrigerant circuit 26 . The refrigerant circuit 26 includes a refrigerant compressor 28 and a condenser 30 . Refrigerant compressor 28 may be electrically driven with the ability to adjust compressor speed (RPMs) during operation. The condenser 30 guides the refrigerant into the refrigerant pipeline 32 , and the refrigerant pipeline 32 is branched into a first branch 34 and a second branch 36 of the refrigerant circuit 26 .

[0012] The first branch 34 directs refrigerant through an evaporator thermal expansion valve 38 (or other expansion device) into an evaporator 40 located in an HVAC module 42 in a passenger cabin 44 of the vehicle 20 . Refrigerant exiting the evaporator 40 is directed through the return portion of the ev...

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PUM

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Abstract

A HVAC and battery thermal system and method for a vehicle having a passenger cabin and a battery pack is disclosed. The system may comprise a refrigerant loop and a coolant loop. The refrigerant loop includes a first leg and a second leg, the first leg including an expansion device and an evaporator, and the second leg including an expansion device and a chiller. The coolant loop directs coolant through the battery pack and includes a controllable coolant routing valve, a bypass branch and a chiller branch, with the chiller in the chiller branch. The coolant routing valve has a bypass outlet that directs the coolant into the bypass branch and a chiller outlet that directs the coolant into the chiller branch. The coolant loop may also include a radiator branch and battery radiator, with the coolant routing valve including a radiator outlet that directs the coolant into the radiator branch.

Description

Background technique [0001] The present invention generally relates to heating, ventilation and air conditioning (HVAC) systems and battery pack thermal systems in vehicles. [0002] Advanced motor vehicles that use battery packs to store large amounts of energy for electric propulsion systems are now being introduced. These vehicles may include, for example, plug-in hybrid electric vehicles, electric vehicles with an internal combustion engine acting as a generator to charge batteries, and fuel cell vehicles. In general, these battery packs require some type of thermal system to cool and heat the pack. [0003] Typical battery thermal systems for cooling and heating the battery pack rely on air flow from the vehicle's HVAC system. This may be cabin air directed through the battery pack. But these systems have drawbacks such as low heat dissipation due to low heat transfer coefficient of air, interior cabin noise, vibration and harshness (NVH) due to battery fan motor noise...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B5/02F25B41/06F25B49/02H01M10/50G01K13/02G01K13/024
CPCY02E60/12H01M10/5004B60H1/00885H01M10/5075B60H2001/00949B60H2001/00307H01M10/5016H01M10/5095H01M10/5077B60H1/00278H01M10/625H01M10/663H01M10/6568H01M10/6567H01M10/613Y02E60/10
Inventor M·D·内梅什E·J·斯坦克M·J·马丁奇克W·伊布里K·辛格
Owner GM GLOBAL TECH OPERATIONS LLC
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