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Micro-power consumption high-capacity lithium-ion power battery group management device

A power battery pack and management device technology, which is applied to battery circuit devices, circuit devices, emergency protection circuit devices, etc., can solve problems such as high circuit failure voltage, large self-consumption current, and poor antistatic ability, and achieve failure voltage Low, avoiding the imbalance of power saturation and delaying the aging of the device

Inactive Publication Date: 2010-11-17
SHANDONG UNIV AT WEIHAI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problems existing in existing products, such as large self-consumption current, high circuit failure voltage, poor antistatic ability, and low reliability, the present invention provides a micro power generator with extremely low self-consumption current and electrostatic discharge protection capability. High-capacity lithium-ion power battery pack management device

Method used

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  • Micro-power consumption high-capacity lithium-ion power battery group management device
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  • Micro-power consumption high-capacity lithium-ion power battery group management device

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Embodiment Construction

[0017] The device is composed of multiple sections with the same structure and connected in series for detection, level shift and logical combination operation, equalization control unit circuit and common control part.

[0018] Such as figure 1 As shown, any section (section i) detection, level shift and logical combination operation, and equalization control unit circuit are respectively composed of micro-power consumption single-cell lithium-ion battery protection circuit Ui1, HCMOS analog switch Ui2 with level shift control, MOS Composed of tube Ti1 and resistor Ri1, its micro-power consumption single-cell lithium-ion battery protection circuit Ui1 is connected in parallel at both ends of each battery cell to detect the voltage of the battery in this section, and generate a charge overvoltage protection signal COi and a discharge undervoltage protection DOi control signal are respectively connected to the normally open (NO) pins of the two analog switches of the HCMOS anal...

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Abstract

The invention relates to a micro-power consumption high-capacity lithium-ion power battery group management device, which is used for charge-discharge protection and charge balance management of a multi-joint series-connected lithium-ion power battery group, and can realize the detection of battery voltage, the migration of level of a control signal and the logic combination operation by adopting a micro-power consumption single-joint lithium-ion battery protection circuit and a CMOS analog switch with level migration control, realize the on-off control of a total charge-discharge circuit of the battery group, realize the charge-discharge protection, control the charge protection of batteries and then carry out discharge by utilizing the charge protection and the release of the single-joint lithium-ion battery protection circuit, realize the intermittent balance control, adopt a source of a MOS tube to follow a current signal of a circuit sampling load circuit, further utilize the overcurrent and short-circuit detection function of the single-joint lithium-ion battery protection circuit to realize the overcurrent and short-circuit protection, adopt the source of the MOS tube to follow a circuit and a high-voltage resistance and low dropout voltage regulator for constituting a power supply circuit of a public control part and adopt the electrostatic discharge protection of a TVS realization device.

Description

Technical field: [0001] The invention relates to a management device for a large-capacity lithium-ion power battery pack with low power consumption, which is used for charging and discharging protection of multiple large-capacity lithium-ion series battery packs and balanced management of charging power, which can ensure a large-capacity lithium-ion power battery pack The use safety is consistent with the charging saturation. Background technique: [0002] Lithium-ion battery is a new type of storage battery developed in recent years. Because it is superior to other existing types of batteries in terms of energy density, specific energy, memory effect, and cycle life, it has been widely used, especially lithium-ion batteries. Ion batteries do not pollute the environment, are real green energy sources, and have been widely valued by people. They have been widely used in portable electronic information products such as mobile communication terminals and notebook computers. Ho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H02H7/18
Inventor 刘晓军兰成章
Owner SHANDONG UNIV AT WEIHAI
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