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Circuit and system for intelligent management of battery pack

An intelligent management system and technology of intelligent management, applied in the field of intelligent management circuit of battery pack and intelligent management system of battery pack, can solve problems such as inability to effectively provide float charge balance, unable to achieve float charge balance, damage to electrical equipment, etc., and achieve smooth The effect of switching equalization, voltage and current stability, and efficient floating charge equalization

Active Publication Date: 2013-03-13
江苏赣锋动力科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] (3) Floating balance: can not effectively provide floating balance
[0015] In summary, although this switching equalization method has the following advantages: it can charge as much electricity as possible to the battery, and it can also release as much stored electricity as possible. The energy consumption brought by the energy transfer, so the energy utilization efficiency is very high; but there are also the following deficiencies: (1) In the discharge working state, the switching of the battery will cause the battery pack to be disconnected instantaneously, which is caused by frequent disconnection and connection The impact may damage the electrical equipment; (2) can not achieve floating balance

Method used

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  • Circuit and system for intelligent management of battery pack
  • Circuit and system for intelligent management of battery pack
  • Circuit and system for intelligent management of battery pack

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Embodiment Construction

[0051] The technical solution of the present invention will be further described below in conjunction with a preferred embodiment and the accompanying drawings.

[0052] As mentioned above, there are many deficiencies in the existing battery management technology, so the inventor of this case provides a new type of battery pack intelligent management circuit. refer to figure 2 As shown, as a typical embodiment of the battery pack intelligent management circuit, it includes a plurality of battery units numbered 1 to i (which may be a single battery or a combination of multiple single batteries, hereinafter referred to as "battery" ), i=1, 2, ... N, N is a positive integer greater than or equal to 2, where the specifications and models of each battery are the same, and its rated charging voltage is ε, then the rated charging voltage of the battery pack is Nε.

[0053] At the same time, this embodiment also includes a series of switches S i，n , in this embodiment, n is selecte...

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Abstract

The invention discloses a circuit and a system for intelligent management of a battery pack. The circuit for intelligent management of the battery pack comprises more than two battery units, wherein battery units are connected in series, one pole of each of the battery units is electrically connected with one output port of a voltage-reduction and voltage-stabilizing circuit and one pole of a redundant battery unit through a third switch and a first switch sequentially, the third switch and the first switch are in series connection, and the other pole of each of the battery units is electrically connected with the other output port of the voltage-reduction and voltage-stabilizing circuit and the other pole of the redundant battery unit through a second switch. The system for intelligent management of the battery pack comprises the circuit for intelligent management of the battery pack. What's more, the first switch, the second switch and the third switch are controllable switches and are controlled by one control unit. By the aid of the circuit and the system, the effective management of the battery pack can be achieved, and particularly, the smooth switching balance and the efficient floating charging balance can be achieved.

Description

technical field [0001] The invention relates to a battery pack management system (BMS), in particular to a battery pack intelligent management circuit and a battery pack intelligent management system. Background technique [0002] In order to provide sufficient voltage for the device, the battery pack is usually composed of multiple batteries in series, but if the capacity of the batteries does not match, the capacity of the entire battery pack will be affected. When the cells in a battery pack are unbalanced, its usable capacity will decrease, and the battery with the lowest capacity in the series-connected battery pack will determine the total capacity of the battery pack. In an unbalanced battery pack, one or a few cells reach maximum capacity while the others still need to be charged. When discharging, the battery that is not fully charged will be discharged before other batteries, so that the battery pack will stop supplying power in advance due to insufficient voltage...

Claims

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Application Information

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IPC IPC(8): H02J7/00
Inventor 何磊
Owner 江苏赣锋动力科技有限公司
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