Dual-Motor Charge-Discharge Circuit for Battery Self-Heating
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Solution Overview
Problem
Current battery self-heating solutions are singular and costly, with limited adaptability to various scenarios, and impedance parameters during the heating process cannot be adjusted, leading to large peak currents and reduced heating efficiency in dual-drive motor systems.
Innovation Solution
A charge-discharge circuit that utilizes alternating current generated by a charge-discharge loop between a drive motor and a battery, allowing flexible adjustment of the charge-discharge loop without altering the motor structure, by controlling the on-off state of phase bridge arms and connecting motor neutral points to achieve battery self-heating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional battery self-heating solutions are used in dual-drive motor systems, then heating function is achieved, but system cost increases and adaptability to various scenarios is reduced
Solution Approach 1:
The patent makes the existing motor control system perform multiple functions by enabling it to control both motor operation and battery self-heating. The switch module and control unit are configured to identify different working scenarios (motor driving vs. battery heating) and adjust control strategies accordingly, allowing a single system to serve dual purposes without adding dedicated heating equipment
Solution Approach 2:
The battery self-heating function is achieved by utilizing the battery's own charge-discharge cycles through the motor control system, rather than relying on external heating devices. The control unit regulates the charge-discharge process to generate heat within the battery, making the battery self-service for its own thermal management needs
2Productivity
If fixed impedance parameters are used during battery heating, then system simplicity is maintained, but peak currents increase and heating efficiency decreases
Solution Approach 1:
The patent implements dynamic impedance parameter adjustment during the battery self-heating process. The control unit continuously monitors the charging current and adjusts impedance parameters in real-time based on the current state, transitioning from fixed to variable impedance control to optimize heating efficiency while managing peak currents
Solution Approach 2:
The control unit modifies impedance parameters during the heating process based on identified working scenarios and real-time current measurements. By changing electrical parameters dynamically rather than maintaining fixed values, the system optimizes heating performance and reduces excessive peak currents
3Adaptability or versatility
If the charge-discharge loop is fixed, then system simplicity is maintained, but flexible adjustment for different heating demands is limited
Solution Approach 1:
The patent creates a dynamically adjustable charge-discharge loop where the control unit can identify different working scenarios and reconfigure the connection between the power module and motor control system. The switch module enables flexible routing of current paths, allowing the system to adapt the charge-discharge loop configuration based on heating demands without physical reconfiguration
Solution Approach 2:
The patent segments the charge-discharge control into independent controllable sections through the switch module, which can selectively connect or disconnect different paths. This segmentation allows flexible reconfiguration of the charge-discharge loop for different scenarios while maintaining overall system simplicity through electronic control rather than mechanical reconfiguration
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
Enables flexible battery heating in dual-drive motor scenarios, reducing costs and improving heating efficiency by adjusting impedance parameters and reducing peak currents, enhancing system adaptability.
Implementation Method 1
utilizing alternating current generated by a charge-discharge loop between a drive motor and a battery to achieve battery self-heating
Data Source
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AI summary
Embodiments of the present application provide a charge-discharge circuit, a method, a computing device, and a storage medium thereof, where a regulation switch module is connected between a first energy storage element and a second switch module, utilizing an alternating current generated by a charge-discharge loop between a drive motor and a battery to achieve battery self-heating. The present application enables flexible adjustment of the charge-discharge loop between a power battery and an energy storage element. The present application particularly achieves battery heating in a dual-drive motor scenario, enabling flexible adjustment of the charge-discharge of dual-drive motors for battery self-heating solutions while reducing costs, to meet heating demands in various scenarios.