Data collection and energy balance control device and method for lithium battery pack of electromobile

A technology of energy balance and lithium battery pack, which is applied in battery circuit devices, electric vehicles, circuit devices, etc., and can solve problems such as consumption, low efficiency, and long time-consuming charging balance

Inactive Publication Date: 2013-07-31
XIANGTAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to limit power consumption, this type of circuit generally only allows discharge at a small current of about 100mA, which leads to a long time-consuming charge balance, energy consumption, a large amount of heat, and low efficiency.

Method used

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  • Data collection and energy balance control device and method for lithium battery pack of electromobile
  • Data collection and energy balance control device and method for lithium battery pack of electromobile
  • Data collection and energy balance control device and method for lithium battery pack of electromobile

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Embodiment Construction

[0034] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific examples described here are only used to explain the present invention and are not intended to limit this invention.

[0035] like figure 1 Shown is a system structure block diagram of the present invention, including a data acquisition module, an energy balance module, a channel selection circuit, a communication module and a control module;

[0036] Both the rechargeable battery module and the energy balance control module are connected to the input terminals of the channel selection circuit, and the multiple output terminals of the channel selection circuit are respectively connected to the multiple single batteries contained in the lithium battery pack; the input terminals of the data acquisition mod...

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Abstract

The invention discloses a data collection and energy balance control device and method for a lithium battery pack of an electromobile. The device comprises a data collection module, an energy balance module, a channel selection circuit, a communication module and a control module, wherein the energy balance module, the channel selection circuit, the lithium battery pack, the data collection module, the communication module and the control module are connected sequentially. A charging mode is selected from battery charge modules or an energy storage unit automatically by the channel selection circuit; working conditions of battery cells are collected in real time by the data collection module; the control module selects corresponding battery cell channels; energy balance control is conducted on the battery cell channels by the energy balance module; a power generation system of the electromobile and the energy storage unit are effectively used for charging the battery cells on line timely during operation of the electromobile; the device generates less heat and is good in balance effect; the service efficiency of the lithium battery pack is improved; and a driving distance of the electromobile is prolonged effectively.

Description

technical field [0001] The invention relates to a data acquisition and energy balance control device and method for a lithium battery pack of an electric vehicle. Background technique [0002] Energy crisis and environmental pollution are two major problems facing all countries in the world today. Electric vehicles have the advantages of energy saving and environmental protection, and become an inevitable trend in the future development of automobiles. The power battery pack is a key component that restricts the industrialization of electric vehicles. Lithium batteries are widely used in electric vehicles due to their stable safety performance and high capacity. [0003] Since the electric vehicle lithium battery pack (usually referred to as the power battery pack) is usually composed of dozens or even hundreds of single cells, and the charge acceptance, self-discharge rate and capacity decay rate of each single cell in the battery pack have The differences lead to an incr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H02H7/18
Inventor 潘勇李旭军刘达龚跃球雷维新
Owner XIANGTAN UNIV
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