Battery Compartment Airflow Control for Charge-Discharge Temperature Stability
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Solution Overview
Problem
Rechargeable batteries in charge-discharge devices operate inefficiently and pose safety risks when their temperature exceeds or falls outside their optimal operating range due to inadequate heat dissipation or condensation, potentially leading to damage or explosion.
Innovation Solution
A charge-discharge device with active temperature control, incorporating an air inlet and outlet system, temperature sensors, and a controller to regulate the flow of cold or warm air to maintain the battery temperature within the optimal range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the rechargeable battery operates without active temperature control, then the device structure remains simple, but the battery temperature may exceed or fall below the working temperature range, degrading charging/discharging efficiency and causing safety issues
Solution Approach 1:
The patent introduces air inlet pipes, air outlet pipes, and an air blowing device as intermediary components between the external environment and the battery compartment. These intermediaries actively regulate the thermal environment within the battery compartment by controlling air flow, thereby maintaining battery temperature within the working range without requiring direct contact or complex integrated thermal management systems within the battery structure itself.
Solution Approach 2:
The temperature control system utilizes ambient air from the external environment as a free cooling resource. The air blowing device draws in ambient air, which naturally absorbs heat from the battery through convection, eliminating the need for active refrigeration systems or complex thermal regulation mechanisms. The system serves itself by leveraging environmental conditions for temperature control.
2Productivity
If the battery generates large amounts of heat during charging/discharging, then the energy output increases, but the temperature rises beyond the working temperature range, leading to improper operation or damage
Solution Approach 1:
The patent employs pneumatic principles by using an air blowing device to force ambient air through inlet pipes into the battery compartment. This pressurized air flow enhances convective heat transfer from the battery surface to the surrounding air, efficiently removing generated heat and maintaining temperature within acceptable limits during high-rate charging and discharging operations.
Solution Approach 2:
The system dynamically changes the thermal parameters of the battery compartment by controlling air flow rate and direction. By adjusting the operation of the air blowing device, the system can modify the heat dissipation rate to match the heat generation rate during different charging/discharging conditions, thereby maintaining optimal temperature parameters for battery operation.
3Reliability
If the temperature of the charge-discharge device is far below the working temperature range, then the electrolyte may condense and electrical energy capacity is reduced, but the device structure lacks active heating capability
Solution Approach 1:
The air blowing device serves multiple functions: it provides cooling during overheating conditions and can be configured to facilitate heating when ambient temperature is low by directing warm ambient air into the battery compartment or by simply preventing excessive heat loss. This single device handles both thermal extremes, eliminating the need for separate heating and cooling systems.
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
Maintains battery efficiency and safety by actively controlling temperature through air regulation, preventing overheating or underheating, thus ensuring stable operation.
Implementation Method 1
the controller actively controls the external air blowing device to transport cold air or warm air. Then the cold air or warm air flows into the accommodating space through the at least one air inlet pipe, and then flows out through the at least one air outlet pipe to cool the battery module
Data Source
AI summary
A charge-discharge device with active temperature control, connected with an external air blowing device, includes a battery compartment, a battery module, a controller and at least one temperature sensor. The battery compartment includes an accommodation space, at least one air inlet pipe and at least one air outlet pipe. The battery module is arranged in the accommodating space for charging or discharging. The controller determines whether the temperature of the accommodating space is within a working temperature range of the battery module according to the temperature sensor. When the temperature of the accommodating space exceeds the working temperature range, the controller controls the external air blowing device to supply cold or warm air. The cold or warm air flows into the accommodating space through the air inlet pipe and flows out through the air outlet pipe to achieve the effect of cooling or warming the battery module.