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Electrical energy storage system module level diagnostics

A technology of energy storage system and battery system, which is applied in the field of module-level diagnosis of electric energy storage system, and can solve problems such as shortening the storage period of batteries

Pending Publication Date: 2022-02-18
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Self-discharge shortens the shelf life of the battery and causes the battery to initially have less than a full charge when it is actually put into use

Method used

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  • Electrical energy storage system module level diagnostics
  • Electrical energy storage system module level diagnostics
  • Electrical energy storage system module level diagnostics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0079] refer to figure 1 , depicts a motor vehicle 10 having a powertrain 12 . Vehicle / vehicle 10 may include, but is not limited to, commercial vehicles, industrial vehicles, passenger vehicles, aircraft, ships, trains, and the like. It is also contemplated that the vehicle / vehicle 10 may be a mobile platform, such as an airplane, all-terrain vehicle (ATV), boat, personal mobility device, robot, etc., for the purposes of this disclosure. The powertrain 12 includes a power source 14 configured to generate a power source torque T (at figure 1 shown in ) in order to propel the vehicle / vehicle 10 relative to the road surface 18 via the driven wheels 16 . Power source 14 is depicted as an electric motor-generator. Such as figure 1 As shown in , the powertrain 12 may also include an additional power source 20 , such as an internal combustion engine. Power sources 14 and 20 may cooperate to provide power to vehicle / vehicle 10 .

[0080] The vehicle / vehicle 10 additionally incl...

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PUM

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Abstract

The invention relates to electrical energy storage system module level diagnostics. A battery system with battery cell groups arranged in battery modules includes a controller network configured to monitor each module. The network includes multiple cell monitoring units (CMUs); each CMU electrically connected to one battery module and configured to process cell data for the respective battery cell groups. The network also includes multiple voltage sensors on each CMU-each sensor configured to detect voltage across one respective cell group, and multiple microchips-each microchip arranged on one CMU in communication with the respective voltage sensors. Each microchip is programmed with an algorithm configured to receive detected voltage data from the respective sensors at predetermined time intervals over a predetermined timeframe and store the voltage data. The algorithm is additionally configured to determine a discharge rate of each associated cell group using the stored data and determine degradation of each cell group using the determined respective discharge rate.

Description

technical field [0001] The present disclosure generally relates to systems and methods for module-level diagnostics and performance prediction of multi-unit electrical energy storage systems. Background technique [0002] An electrical energy storage or battery system or array may include a plurality of battery cells in relatively close proximity to each other. A plurality of battery cells may be assembled into a battery stack or module, and a plurality of battery modules may be assembled into a battery pack. Batteries can be roughly classified into primary batteries and secondary batteries. Primary batteries, also known as disposable batteries, are designed to be used until they are depleted, after which they are simply replaced with new batteries. Secondary batteries, more commonly referred to as rechargeable batteries, utilize specific high-energy chemicals that allow such batteries to be recharged and reused repeatedly, thus providing an economical, environmentally fri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/42H01M10/48
CPCH01M10/4257H01M10/486H01M2010/4271H01M2010/4278H02J7/0047H02J7/005H02J7/0013H02J7/00032Y02E60/10Y02T10/70H02J7/0014H02J7/00036H02J7/007182H02J7/0049
Inventor S·R·拜尔F·王T·王J·M·塞廷
Owner GM GLOBAL TECH OPERATIONS LLC