Backup power supply

A backup power supply and circuit technology, applied in current collectors, electric vehicles, electrical components, etc., can solve problems such as mixed insertion, failure of battery management system protection functions, damage to sampling protection modules, etc., to prevent protection failures and reduce installation and maintenance. difficulty and cost, and the effect of preventing abnormal charging or discharging

Active Publication Date: 2015-07-01
BYD CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In order to overcome the problems in the prior art that the sampling output terminal of the power battery module in the backup power supply may be mixed with the sampling input terminal in the sampling protection module, resulting in damage to the sampling protection module and failure of the protection function of the battery management system, the embodiment of the present invention provides backup power

Method used

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Examples

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Embodiment

[0054] This example will specifically describe the backup power supply, such as image 3 As shown, it includes a power battery module 2 and a battery management system 100;

[0055] like Figure 5 , Image 6 As shown, the power battery module 2 includes several battery packs 21 connected in series, and the battery pack 21 includes several single cells connected in series;

[0056] The two ends of the single battery in the power battery module 2 are provided with sampling lines, and the output terminals of several sampling lines are integrated into a sampling output terminal 22;

[0057] Among them, such as image 3 As shown, the battery management system 100 includes a sampling protection module 3, a charging and discharging control module 1 and an anti-mixing module 4;

[0058] The sampling protection module 3 is used to receive the sampling signal of the sampling output terminal 22 in the power battery module 2, and send a primary control signal to the anti-mixing module...

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Abstract

The embodiment of the invention provides a backup power supply in order to overcome problems that a sampling protection module is damaged and a protection function of a battery management system is failed because a sampling output end of a power battery module and a sampling input end of the sampling protection module of a backup power supply in the prior art are possibly inserted in a mixed mode. The battery management system comprises the sampling protection module, a charging and discharging control module and a mixed insertion prevention module. According to the backup power supply provided by the embodiment of the invention, the battery management system is additionally provided with the mixed insertion prevention module, an IC can be prevented from being damaged when a circumstance of mixed insertion occurs in the backup power supply and the battery management system, and charging and discharging can be cut off timely, thereby being convenient for users to discover timely. Protection imposed on a single battery by the battery management system is effectively prevented from being failed under a condition of mixed insertion, abnormal charging or discharging and over-charging or over-discharging are prevented from occurring, and the installation and maintenance difficulty and the cost are reduced.

Description

technical field [0001] The invention relates to a backup power supply, in particular to a battery management system in the backup power supply module. Background technique [0002] In fields such as communication base stations, it is necessary to use a backup power supply to prevent the sudden power failure of the mains. The earliest lead-acid batteries were used to form battery packs as power battery modules. At present, lithium-ion batteries (especially lithium iron phosphate batteries) have been gradually adopted. ) replaces lead-acid batteries. Generally, the power battery module needs to be used with the battery management system (English full name: Battery Management System, English abbreviation: BMS) to avoid the abnormal overcharge and overdischarge of a single battery, which will affect the life of the backup battery and even bring security risks. [0003] The larger the capacity of the lithium-ion battery, the larger the volume and the heavier the weight. Usually...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
Inventor 潘秋平李明星代祥军
Owner BYD CO LTD
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