Staggered Charging Current Control for Multi-Pack Battery Thermal Management
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Solution Overview
Problem
As intelligent terminals require increased power consumption, multiple batteries are used to enhance capacity, but this leads to challenges in charging modes and efficiency, particularly in managing high currents and thermal power consumption.
Innovation Solution
A charging circuit with multiple battery packs connected in series and parallel, where charging management components interact to adjust charging currents, staggering maximum charging currents across battery packs to reduce thermal load and output power requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple battery packs are charged simultaneously at high current to increase charging speed, then charging efficiency is improved, but thermal power consumption increases and output power requirements increase
Solution Approach 1:
The charging management components implement periodic action by sequentially controlling multiple battery packs to reach maximum charging current at different time periods. The controller adjusts the charging current of each battery pack in a staged manner, ensuring that not all battery packs simultaneously experience peak current, thereby reducing peak thermal power consumption while maintaining high overall charging efficiency
Solution Approach 2:
The charging system employs dynamic current adjustment where the controller continuously monitors and adjusts the charging current for each battery pack based on real-time conditions. This dynamic control allows the system to optimize charging speed while preventing simultaneous peak thermal loads across all battery packs
2Productivity
If multiple battery packs are charged simultaneously at high current to increase charging speed, then charging efficiency is improved, but output power requirements increase
Solution Approach 1:
The charging management components implement periodic action by sequentially controlling multiple battery packs to reach maximum charging current at different time periods. The controller adjusts the charging current of each battery pack in a staged manner, ensuring that not all battery packs simultaneously experience peak current, thereby reducing peak thermal power consumption while maintaining high overall charging efficiency
3Quantity of substance
If multiple battery packs are charged simultaneously at high current, then charging capacity is increased, but thermal stack design complexity increases
Solution Approach 1:
The charging management components implement periodic action by sequentially controlling multiple battery packs to reach maximum charging current at different time periods. The controller adjusts the charging current of each battery pack in a staged manner, ensuring that not all battery packs simultaneously experience peak current, thereby reducing peak thermal power consumption while maintaining high overall charging efficiency
Data Source
AI summary
A charging circuit includes: an interface; a plurality of charging management components connected to the interface in parallel; and a plurality of battery packs, wherein each of the plurality of battery packs includes a battery or a plurality of batteries connected in series with each other, the plurality of battery packs are connected in series with the plurality of charging management components, respectively, and the plurality of battery packs are connected in parallel; wherein the plurality of charging management components are electrically connected with each other to adjust, through signal interaction between the plurality of charging management components, a charging current that is input to each of the battery packs, such that a time period of a maximum charging current for each battery pack is different from a time period of a maximum charging current for another battery pack.