Modular lithium power battery and its management system and management method

A power battery and management system technology, applied in secondary batteries, secondary battery repair/maintenance, circuits, etc., can solve problems such as runaway, explosion, and reliability that cannot reach 100%

Inactive Publication Date: 2011-11-30
福州天和新能电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the high-power power electronic system is temporarily out of control, it may cause very serious consequences.
Although the reliability of any system cannot reach 100%, for example, in the field of electric vehicles, the products of some domestic and foreign companies have caused serious accidents such as car fires and explosions.

Method used

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  • Modular lithium power battery and its management system and management method
  • Modular lithium power battery and its management system and management method
  • Modular lithium power battery and its management system and management method

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Embodiment Construction

[0053] In order to describe the technical content, structural features, achieved goals and effects of the present invention in detail, the following will be described in detail in conjunction with the embodiments and accompanying drawings.

[0054] see figure 1 , the present invention relates to a modular lithium-powered battery management system (BMS), which includes a power supply module for powering the system, a main controller, and a plurality of point temperature sensors (usually fixed on the electrodes of each cell with glue) , the first CAN bus module and the second CAN bus module, the voltage acquisition module (usually connected by the voltage acquisition harness), the current sensor (only one current sensor is required for each row of cells when forming the battery system), the charge equalization module and Charge and discharge protection switch control module. Of the above,

[0055] The first CAN bus module and the second CAN bus module are used to provide the ...

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Abstract

The invention provides a modular lithium power battery and its management system and management method, which collect important cell voltage and current parameters in two independent ways; the charge and discharge protection switch control module adopts two independent paths for transmission , thereby greatly improving system reliability by providing redundancy. In addition, by simultaneously using the parameter threshold and parameter gradient (rate of change per unit time) as the basis for judging the control state, it has certain fault predictability; it has certain fault tolerance by analyzing the obtained parameters according to the correlation between different parameters; CAN bus communication Use relays and algorithms for dynamically setting communication priorities to ensure that fault status is quickly transmitted to the system master. The connection expansion mode of the modular lithium power battery includes the electrical connection and communication connection between the systems.

Description

technical field [0001] The invention relates to a power battery and its matching power supply management, in particular to a modular lithium power battery and its management system and management method. Background technique [0002] High-power lithium power batteries have the characteristics of high energy density, many charge and discharge cycles, long service life, good temperature characteristics, clean and pollution-free, and have been widely used in many fields such as electric vehicles, energy storage power stations, and communication backup power supplies. In the near future, it will replace lead-acid batteries and become the first choice for a new generation of high-power energy storage batteries. [0003] At present, most of the products of lithium battery manufacturers are so-called Batteries , and lithium batteries, especially high-power lithium-powered batteries, will produce inconsistencies in the production process and use process. The cell first reaches the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/42H01M10/48G01R31/36H02H7/18
CPCY02E60/12Y02E60/10
Inventor 隋越
Owner 福州天和新能电子科技有限公司
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