EV Battery Control Circuit for Flexible Heating Without Motor Faults
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Solution Overview
Problem
Existing electric vehicle battery heating technologies face challenges in flexibly adjusting and controlling the charging/discharging of traction batteries to avoid faults such as phase loss or short circuits during the heating process.
Innovation Solution
An electric vehicle battery control circuit, system, and control method that includes an energy storage module, a charging module, and a regulation switch component, allowing for flexible regulation of the charging/discharging voltage loop to meet different heating needs and prevent motor faults.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If battery heating technology is used to improve adaptability in cold regions, then heating effect is improved, but motor faults such as phase loss or short circuits may occur
Solution Approach 1:
The patent introduces an intermediary control system comprising a control circuit, switching elements, and detection units that mediate between the battery heating function and motor protection. The control circuit detects motor status and battery temperature, then selectively activates heating paths while isolating the motor from harmful effects, thus enabling cold region adaptability while preventing motor faults
Solution Approach 2:
The patent segments the battery heating control into multiple independent control paths and switching elements. By dividing the heating control circuit into separate controllable sections with individual switching elements, the system can selectively activate specific heating paths while isolating faulty sections, thereby maintaining overall system reliability while providing comprehensive heating coverage
2Adaptability or versatility
If charging/discharging control is rigidly fixed, then system simplicity is maintained, but flexible adjustment to meet different heating needs is limited
Solution Approach 1:
The patent implements dynamic control of charging/discharging parameters through programmable control circuits that can adjust switching timing, duration, and sequence based on real-time battery temperature and state of charge. This dynamic adjustment capability enables flexible adaptation to different heating needs while keeping the hardware structure relatively simple through software-based control logic
Solution Approach 2:
The control circuit is designed with multi-functionality to handle various charging/discharging scenarios and heating requirements using a single integrated control system. The universal control architecture can adapt to different battery configurations, heating modes, and operational conditions through programmable logic, avoiding the need for separate dedicated circuits for each function
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
The solution effectively regulates charging/discharging to meet various heating needs of electric vehicle batteries, thereby enhancing adaptability in cold regions and preventing motor faults such as phase loss or short circuits.
Implementation Method 1
the regulation switch component includes multiple switches, where the multiple switches are disposed between the electric vehicle battery and the charging module and between the energy storage module and the charging module
Implementation Method 2
an energy storage module, a charging module, and a regulation switch component, allowing for flexible regulation of the charging/discharging voltage loop
Implementation Method 3
to enhance the adaptability of electric vehicles in cold regions and improve the battery heating effects, in most cases, the heating technology of traction batteries is used
Data Source
AI summary
This application provides an electric vehicle battery control circuit, system, and control method. The electric vehicle battery control circuit includes an electric vehicle battery, an energy storage module, a charging module, and a regulation switch component; where the charging module includes a switch module; the electric vehicle battery is connected in parallel with the switch module; the regulation switch component includes multiple switches, where the multiple switches are disposed between the electric vehicle battery and the charging module and between the energy storage module and the charging module; and the energy storage module, the regulation switch component, and the switch module are configured to, in response to control signals, regulate charging/discharging between the electric vehicle battery and the energy storage module, or regulate charging/discharging between the electric vehicle battery and the charging module as well as the energy storage module. This meets different heating needs of the electric vehicle battery.