EV Cooling Strategy for Passenger Cabin and Battery Load Sharing
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Solution Overview
Problem
Existing air-conditioning systems in electric vehicles struggle to simultaneously cool the passenger compartment and battery efficiently, leading to high energy consumption and cost, especially during high ambient temperatures, which affects vehicle endurance and customer satisfaction.
Innovation Solution
A method and apparatus that adaptively adjust cooling strategies based on vehicle driving phases, prioritizing battery or passenger compartment cooling according to temperature thresholds, using a water cooling system to optimize energy use and maintain comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the air-conditioning system is designed to simultaneously cool both the passenger compartment and battery, then the cooling capability is improved, but the system cost and complexity increase significantly
Solution Approach 1:
The air-conditioning system dynamically switches between single-duty mode (cooling only passenger compartment or only battery) and double-duty mode (cooling both simultaneously) based on real-time temperature conditions of the battery and passenger compartment, avoiding the need for a permanently complex dual-purpose system
Solution Approach 2:
The air-conditioning system is designed to perform multiple functions: it can cool the passenger compartment, cool the battery, or perform both functions simultaneously depending on the operating conditions, making a single system versatile enough to handle different cooling scenarios
2Productivity
If the air-conditioning system is designed with better performance to meet simultaneous cooling requirements, then the cooling efficiency is improved, but the energy consumption increases
Solution Approach 1:
The system dynamically adjusts its operation mode based on temperature thresholds: when battery temperature exceeds the first threshold and passenger compartment temperature exceeds the second threshold, it enters double-duty cooling mode; otherwise, it operates in single-duty mode, thereby optimizing energy consumption based on actual cooling needs
Solution Approach 2:
The system changes operational parameters (cooling mode, refrigerant flow distribution) based on temperature parameters of the battery and passenger compartment, switching between different cooling strategies to balance cooling efficiency and energy consumption
3Temperature
If a matched air-conditioning system is designed to provide simultaneous cooling, then the cooling performance is improved, but the manufacturing cost increases
Solution Approach 1:
The system uses dynamic control logic that switches between single-duty and double-duty cooling modes based on temperature conditions, allowing a standard air-conditioning system to achieve dual-purpose functionality without requiring an expensive dedicated dual-purpose system
Solution Approach 2:
The control system automatically determines the appropriate cooling mode based on temperature sensor feedback from the battery and passenger compartment, eliminating the need for complex manual configuration or specialized hardware design
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach ensures timely and efficient cooling of both the battery and passenger compartment, reducing overall energy consumption and extending vehicle endurance while maintaining comfort, thus addressing the refrigeration double duty challenge.
Implementation Method 1
cooling the battery and/or the passenger compartment according to the target cooling strategy
Implementation Method 2
using a water cooling system to optimize energy use
Data Source
AI summary
Disclosed are a method for cooling a passenger compartment and a battery, comprising: step S101, determining the current driving stage of a vehicle; S102, querying, according to a correlation between a driving stage and a cooling strategy, a target cooling strategy corresponding to the current driving stage of the vehicle, wherein different driving stages correspond to different cooling strategies, and each cooling strategy comprises passenger compartment cooling and battery cooling; and S103, cooling a passenger compartment and/or a battery according to the target cooling strategy. Also disclosed are an apparatus for cooling a passenger compartment and a battery, and a vehicle to which the method is applied.