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Power battery pack monitoring and balancing device of small power-driven vehicle

A technology for electric vehicles and power battery packs, applied in battery circuit devices, circuit devices, electric vehicles, etc., can solve the problems of inconvenient expansion or replacement of batteries, unsatisfactory balance effect, complex structure, etc., and achieve a convenient intelligent battery model. Number of groups, convenient power system capacity, good balance effect

Inactive Publication Date: 2014-12-10
SOUTHWEST JIAOTONG UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the existing technologies for monitoring and equalizing devices for small electric vehicle power battery packs generally have some imperfections: the monitoring and equalizing devices are only suitable for specific battery packs, and when the battery packs reach the end of their service life, the monitoring and equalizing devices will also Then the historical mission is completed; it is inconvenient to expand capacity or replace damaged batteries, the structure is complex and the cost is high; only online equalization mode is available, and the equalization effect is not ideal

Method used

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  • Power battery pack monitoring and balancing device of small power-driven vehicle
  • Power battery pack monitoring and balancing device of small power-driven vehicle
  • Power battery pack monitoring and balancing device of small power-driven vehicle

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Embodiment Construction

[0029] The present invention will be described in detail below in conjunction with the accompanying drawings: It should be understood that the specific embodiments described in detail are only for illustrating the present invention, rather than limiting the protection scope of the present invention.

[0030] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0031] The present invention provides a small electric vehicle power battery pack monitoring and balancing device, including a control system 100 and several intelligent battery modules (200, 300), the control system 100 is connected with the first intelligent battery module 200, and all intelligent battery modules The modules (200, 300) are sequentially connected in series through the signal bus (230, 330) at the connection port of the battery monitoring and balancing system (220, 320), and the serial connection of the several intelligent batte...

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Abstract

The invention discloses a power battery pack monitoring and balancing device of a small power-driven vehicle. The power battery pack monitoring and balancing device comprises intelligent battery modules and a control system, each intelligent battery module comprises a battery string and a battery monitoring and balancing system, and the control system comprises a micro-programmed control unit (MCU) module, a liquid crystal display (LCD) unit, a storage unit and a protecting alarm unit. The intelligent battery modules can be sequentially overlaid on the control system so as to increase or reduce capacity of a power system, damaged intelligent battery modules can be replaced, the control system figures out battery state information for displaying and storage according to information sent by the intelligent battery modules, and protecting alarm actions can be produced in necessity. According to non-balance degrees of the intelligent battery modules, one intelligent battery module is switched in or out so that on-line or off-line balancing modes of the intelligent battery modules can be determined.

Description

technical field [0001] The invention belongs to the application field of power batteries, and in particular relates to the monitoring and balancing technology of power battery packs. Background technique [0002] Power batteries are widely used in electric vehicles because of their high power and high energy density, which can achieve the best balance between efficiency and environmental impact. However, the limitation that the higher the energy is, the more unstable it is, so that the application of power batteries cannot fully guarantee the safety of operation for the time being. The performance and safety performance of a single battery can basically meet the needs of power applications, but the group application is easy to reduce the capacity of the battery pack, reduce the service life of the battery pack, cause fire, explosion and other safety problems, mainly due to the unbalanced performance of the single batteries Therefore, in the field of power battery applicatio...

Claims

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Application Information

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IPC IPC(8): H02J7/00
Inventor 戴朝华欧阳誉波欧阳家俊陈维荣刘志祥李奇张雪霞游志宇
Owner SOUTHWEST JIAOTONG UNIV
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