Parallel Battery Pack with Semiconductor Switching for Charge Balance
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Solution Overview
Problem
Existing battery systems for electric vehicles lack efficient control mechanisms for individual battery charging and discharging, leading to uneven battery usage and reduced charge retention.
Innovation Solution
A battery pack configuration with semiconductor switching modules that allow bi-directional current flow, controlled by a battery control module to manage charge and usage data, ensuring balanced charging and discharging of batteries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional battery systems without individual control mechanisms are used, then the device complexity is reduced, but uneven battery usage and reduced charge retention occur
Solution Approach 1:
The battery pack is divided into multiple independently controllable battery units, each with its own semiconductor switching module. This segmentation allows individual monitoring and control of each battery's charging and discharging, preventing uneven usage and improving charge retention while managing complexity through modular architecture.
Solution Approach 2:
The battery control module continuously monitors charge data and usage data from each battery and adjusts the switching module operations accordingly. This feedback mechanism ensures balanced charging and discharging by responding to real-time battery states, improving reliability through adaptive control.
2Stability of the object's composition
If semiconductor switching modules are added for individual battery control, then uniform battery usage is achieved, but the device complexity increases
Solution Approach 1:
Each battery is paired with its own semiconductor switching module, creating modular units that can be independently controlled. This segmentation enables precise control over current flow for each battery, ensuring uniform usage patterns while organizing complexity into manageable, repeatable modules.
Solution Approach 2:
The semiconductor switching modules are designed with universal functionality to handle both charging and discharging operations for any battery unit. This multi-functionality reduces the need for separate control circuits for each operation, managing device complexity while achieving uniform battery usage through consistent control logic.
Data Source
AI summary
A battery pack for an electric vehicle includes a first battery, a second battery, and a load arranged in parallel. A first semiconductor switching module is arranged in series with the first battery, and to selectively allow current flow from the first battery to the load and from the load to the first battery. A second semiconductor switching module is arranged in series with the second battery, and to selectively allow current flow from the second battery to the load and from the load to the second battery. A battery control module stores at least one of charge data and usage data corresponding to the first battery and the second battery, and selectively turns on and off the first semiconductor switching module and the second semiconductor switching module based on at least one of the charge data and the usage data.