Temperature control device and control method thereof, computer storage medium, and heating and ventilation device
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Solution Overview
Problem
The existing air-cooled chilled water air conditioners used in battery packs experience discontinuous cooling capacity output during the transition from startup to stable output due to the inherent characteristics of the compressor, failing to meet the cooling demands of battery packs.
Innovation Solution
A temperature control device with a refrigeration unit having parallel refrigerant and cooling liquid branches, a cold storage device, and a control method that adjusts branch connections based on outlet and ambient temperatures, electricity prices, and system shutdowns to store and distribute cooling capacity effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a compressor is used in an air-cooled chilled water air conditioner, then the system achieves high heat exchange efficiency, but the cooling capacity output becomes discontinuous during startup to stable operation transition
Solution Approach 1:
The patent applies preliminary action by pre-cooling the battery pack or pre-chilling the cooling water before the compressor starts operating. This is achieved by using auxiliary cooling means or storing cold energy in advance, so that when the compressor begins its transition period, the cooling demand is already partially satisfied, ensuring continuous cooling capacity without interruption.
2Reliability
If the refrigeration unit operates continuously to meet cooling demand, then cooling capacity is maintained, but energy consumption increases
Solution Approach 1:
The patent implements periodic action by operating the compressor in intermittent cycles rather than continuously. The system uses a control strategy that starts the compressor only when necessary, allowing it to run at high capacity during operation, then shuts it off when the battery pack temperature or cooling water temperature reaches the target range, thereby reducing overall energy consumption while maintaining reliable cooling supply.
Solution Approach 2:
The patent applies discarding and recovering by utilizing waste cold energy or pre-cooling periods. The system recovers and stores cooling capacity during off-peak periods or when cooling demand is low, then utilizes this stored cold energy during high-demand periods, reducing the need for continuous compressor operation and lowering energy consumption.
3Power
If the cooling system is designed with high cooling capacity, then it can meet peak battery pack cooling demand, but it causes excessive energy consumption during low-demand periods
Solution Approach 1:
The patent applies dynamics by making the cooling system capacity adjustable and adaptive to real-time battery pack cooling demands. The control system dynamically adjusts the compressor operation, cooling water flow rate, and system configuration based on actual temperature conditions, allowing the high-capacity system to operate at optimal levels during low-demand periods while still meeting peak demands when necessary.
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
Ensures continuous cooling capacity to battery packs by utilizing a cold storage device to supplement initial startup stages and reduce energy consumption and load on the refrigeration unit, enhancing stability and reliability.
Implementation Method 1
a cold storage device, the second cooling liquid branch being thermally connected to the second refrigerant branch through the cold storage device
Implementation Method 2
a first heat exchanger, the first cooling liquid branch being thermally connected to the first refrigerant branch through the first heat exchanger
Data Source
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AI summary
Provided is a temperature control device and a control method therefor, a computer storage medium, and a heating and ventilation device. The control method includes: controlling a refrigerant main path to be in communication with a second refrigerant branch; obtaining an outlet temperature of a cooling liquid main path; and controlling the cooling liquid main path to be in communication with a second cooling liquid branch in response to the outlet temperature being greater than a first set value. According to the control method of the present disclosure, a refrigeration unit is controlled to operate, and the refrigerant main path is controlled to be in communication with the second refrigerant branch, to store cooling capacity in a cold storage device. When a battery pack has a cooling capacity demand, the cooling liquid main path is controlled to be in communication with the second cooling liquid branch, to transport the cooling capacity stored in the cold storage device to the battery pack through the second cooling liquid branch and the cooling liquid main path, to make up for insufficient cooling supply in an initial startup stage of a compressor and satisfy the cooling capacity demand of the battery pack.