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Battery management system for parallel charging of battery modules

A battery module and battery system technology, which is applied to battery circuit devices, multiple synchronous battery arrangements, secondary batteries, etc., can solve the problems of fast, reliable and safe charging of battery modules, and achieve the effect of optimizing charging performance

Pending Publication Date: 2022-04-01
NILFISK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, fast, reliable and safe charging of such battery modules may not be possible with existing battery management systems

Method used

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  • Battery management system for parallel charging of battery modules
  • Battery management system for parallel charging of battery modules
  • Battery management system for parallel charging of battery modules

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0076] Figure 1A and Figure 1B A battery charger system 180 is shown comprising a battery system 100 and a current source 102 arranged to supply charging current to one or more battery modules 103 of the battery system 100 . The current source 102 is controllable to adjust the charging current according to the current control signal 151 from the main controller 101 . Current source 102 is connectable to battery system 100 via terminal 193 . It should be noted, however, that the battery system 100 may be arranged to be substantially continuously connected to the current source 102, eg in the case where the current source 102 is part of an on-board charger. In this case, terminal 193 may be consumable.

[0077] although Figure 1A and Figure 1B Load 190 is also shown, but it should be noted that load 190 connected to battery charger system 180 or battery system 100 via load terminals 192 is not part of battery charger system 180 itself. Instead, the battery charger system...

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PUM

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Abstract

The invention relates to a battery system comprising: a main controller (101) arranged to determine a current control signal for controlling a charging current from a current source (102); one or more battery modules (103) comprising battery module terminals; a connection arrangement (121) arranged to electrically connect one or more battery modules in a parallel manner via the battery module terminals so as to enable parallel charging / discharging via the respective switches (104), wherein each battery module comprises at least one battery cell (105), and a slave control unit (106) configured to monitor a battery condition of the battery module and determine a battery event based on the battery condition, the master controller is configured to determine a current control signal to cause a decrease or increase in the charging current in accordance with a battery event from any of the battery modules, and to determine the current control signal in accordance with a battery module capacity of one or more battery modules.

Description

technical field [0001] The present invention relates to a battery charging system, in particular to a battery charging system for automatic charging of a plurality of battery modules arranged in a battery system. Background technique [0002] A battery powered machine, such as a floor cleaning machine, may include a battery system that may include one or more battery modules. In some cases where two or more battery modules are included in a battery system, the battery modules may have different performance characteristics. The different performance characteristics may be due to different cell capacities, different charge cut-offs, different impedances, different cell technologies, and different lifetimes, among others. [0003] Efficient charging of such battery modules with different performance characteristics can be a challenge. In particular, fast, reliable and safe charging of such battery modules may not be possible with existing battery management systems. [0004]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
CPCH02J7/0013H01M10/4257H02J7/0019H02J7/0071H02J7/00714H02J7/007182H02J7/0048Y02E60/10H02J7/005H02J7/00036H02J7/0049H01M10/425H01M10/441H01M10/46H01M2010/4271H02J7/0063H02J7/0068
Inventor J·托索伊
Owner NILFISK