Electric Vehicle Battery Module Grouping for Thermal and Charge Management
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Solution Overview
Problem
Current methods fail to effectively manage the rechargeable electrical energy storage modules in electric vehicles with Lithium Metal Polymer batteries, particularly in ensuring sufficient autonomy, tolerating slow discharge, maintaining optimal temperature, and balancing charge levels across multiple batteries used in parallel.
Innovation Solution
A method that virtually separates the energy storage modules into groups, alternating their use for power supply, regulating charge levels, and maintaining temperature, with a functional module within each passive group balancing and heating other modules to optimize lifespan and readiness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple batteries are used in parallel to ensure sufficient autonomy, then the energy storage capacity increases, but the difficulty of managing charge balance and temperature control increases
Solution Approach 1:
The patent divides the battery system into multiple groups (first group, second group, third group) with different functional roles. Active groups provide power while passive groups undergo regulation, separating the functions of power delivery and charge maintenance to simplify management of each individual group.
Solution Approach 2:
The patent performs preliminary regulation of passive groups before they become active. During the regulation phase, passive groups are charged or balanced in advance using functional modules, ensuring they are ready for immediate use when switched to active status, thus preventing management issues during operation.
2Duration of action of moving object
If rapid discharge cycles are applied to optimize battery lifespan, then the durability increases, but the temperature control difficulty increases
Solution Approach 1:
The patent segments the battery system into active and passive groups, allowing rapid discharge cycles to be applied selectively to active groups while passive groups undergo gentle regulation. This separation protects batteries from excessive thermal stress while maintaining lifespan optimization.
Solution Approach 2:
The patent implements periodic alternation between active and passive group roles. Batteries undergo cycles of rapid discharge (when active) followed by regulation phases (when passive), creating a periodic pattern that optimizes lifespan while managing temperature through rest periods.
3Reliability
If all batteries are maintained at the same charge level, then the system readiness improves, but the energy loss during balancing increases
Solution Approach 1:
The patent divides batteries into groups where only passive groups undergo charge balancing. Active groups continue to serve the load without interruption, while passive groups are balanced using functional modules drawn from the same passive group, minimizing energy loss and maintaining system readiness.
Solution Approach 2:
The patent enables passive groups to balance their own charge levels using functional modules within the same passive group. This self-service approach reduces the need for external energy input during balancing operations, minimizing energy loss while ensuring all batteries reach optimal charge levels.
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
This approach optimizes the lifespan of the modules by allowing rapid discharge cycles, maintaining optimal temperature, and ensuring all modules are ready for use, thereby enhancing the overall management and efficiency of the energy storage system in electric vehicles.
Implementation Method 1
The functional module of the passive group can be used to maintain heating at least one, in particular all of the modules of the passive group, including itself
Data Source
Figure 1~2a
Figure 2b~3
Figure 4a~4c
AI summary
The invention relates to a process (300) of managing multiple rechargeable stores of electrical energy in an electric vehicle, arranged parallel to one another. The process (300) comprises a separation (302) of the modules into at least two groups, and a power supply (304) using one of the groups at a time. The process (300) further comprises a regulation phase (306) within at least one group, called a passive group, comprising a power supply (306i) of at least one module, known as passive, of the passive group, which is supplied by at least one other module, known as functional, of the passive group. It also relates to a system implementing such a process and an electric vehicle implementing such a process or system.