A system and method for circumventing the short-board effect of a battery pack

A technology of battery packs and short boards, which is applied in the direction of secondary batteries, battery circuit devices, secondary battery repair/maintenance, etc., to achieve the effect of improving battery life, improving reliability, and avoiding damage to battery packs or causing safety accidents

Active Publication Date: 2021-07-02
REPOWER TECH CO LTD
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  • Description
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Problems solved by technology

[0005] In view of this, the embodiments of the present invention provide a system and method for avoiding the short-board effect of a battery pack, aiming to solve the problem that the short-board battery in the battery pack cannot be used in actual use in the traditional battery management technical solution. Under the circumstances, avoid the problem of short-board effect

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  • A system and method for circumventing the short-board effect of a battery pack

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Embodiment Construction

[0023] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0024] figure 1 The first aspect of the embodiment of the present invention provides a schematic diagram of a module structure for a battery pack short board effect avoidance system; for the convenience of description, only the parts related to this embodiment are shown, and the details are as follows:

[0025] A system for avoiding the short board effect of a battery pack, wherein the battery pack 100 includes a plurality of single cells connected in series, and the avoidance system for the short board effect of the battery pack includes a main control module 10. An information collection module ...

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Abstract

A system and method for avoiding the short board effect of a battery pack. The battery pack includes a plurality of electrically connected single cells. The avoiding system includes a main control module, an information collection module, a bidirectional DC conversion module and a power supply module. The power module provides DC signals, and the information collection module collects the parameter information of the single battery and feeds it back to the main control module. After analyzing the parameter information, the main control module determines the short-board battery. Output the first control signal, and output the second control signal when the battery pack is in the discharge state and the short-board battery has been fully discharged; the bidirectional DC conversion module discharges the short-board battery when receiving the first control signal, and when receiving the second control Charge the short-board battery while signaling. The circumvention system controls the bidirectional DC conversion module to charge and discharge the short-board battery accordingly through the main control module, so that it does not affect the overall charge and discharge of the battery pack, and improves the endurance of the battery pack.

Description

technical field [0001] The invention belongs to the technical field of battery management, and in particular relates to a system and method for avoiding the short board effect of a battery pack. Background technique [0002] At present, the power battery packs for electric vehicles are used in series with multiple large-capacity batteries. In the process of using batteries in series, in order to achieve the purpose of protecting the battery, when a single cell in the battery pack is discharged to the cut-off voltage, the other batteries in the battery pack must stop discharging, but at this time the large battery in the battery pack must stop discharging. Part of the battery is still in a state of being able to discharge electricity, which leads to the problem that the energy of the whole battery pack cannot be fully utilized; similarly, the above-mentioned problem also exists during charging. This is the "short board effect" that exists in the battery pack during charging ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/42H01M10/44H02J7/00
CPCH01M10/4207H01M10/425H01M10/441H01M10/446H01M2010/4271H01M10/42H01M10/44H02J7/00Y02E60/10
Inventor 毛广甫
Owner REPOWER TECH CO LTD
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