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BMS device for low-speed electric vehicle

An electric vehicle, low-speed technology, applied in electric vehicles, electric vehicle charging technology, battery/fuel cell control devices, etc., to achieve efficient management, prolong service life, and ensure safe use.

Inactive Publication Date: 2017-10-24
SICHUAN CHANGHONG ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

How to design a BMS with perfect functions, reliable performance and low cost has become a bottleneck restricting the development of lithium-ion battery low-speed electric vehicles

Method used

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  • BMS device for low-speed electric vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0015] The example works as follows:

[0016] (1) Setting battery parameters: According to the battery configuration parameters provided by lithium-ion battery manufacturers, set battery parameters, mainly including battery cell design voltage, design power, charging current, discharging current, applicable temperature, etc.

[0017] (2) Setting protection parameters: According to the battery parameters provided by lithium-ion battery manufacturers, set reasonable protection parameter thresholds, mainly including battery cell over-voltage value, under-voltage value, over-current value, over-temperature value, low-temperature value, automatic Equilibrium value and short circuit protection, overload protection value, etc.

[0018] (3) Battery learning process: In order to ensure accurate and efficient battery management by the BMS, the managed battery must undergo at least one complete learning process under the monitoring of the BMS, including the process of fully charging the ...

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Abstract

The invention relates to the field of BMS devices and discloses a BMS device for a low-speed electric vehicle. A lithium-ion battery of the low-speed electric vehicle is managed, and the reliability of the battery is improved. The device comprises a signal adoption module and a management control module, and the communication of the signal adoption module with the management control module is conducted by an I2C; the signal adoption module comprises a current sampling unit, a voltage sampling unit, a temperature sampling unit, a driving circuit, a balance circuit and a signal processing and storage unit; the management control module comprises a clock unit, a register, a storage unit, a communication unit, a display unit and an MCU. The BMS device is suitable for the low-speed electric vehicle.

Description

technical field [0001] The invention relates to a BMS device, in particular to a BMS device for low-speed electric vehicles. Background technique [0002] With global warming and increasing environmental pollution, low-carbon, energy-saving, and environmental protection have received more and more attention worldwide. As an important field of energy consumption and pollution sources, automobiles have attracted great attention from all countries, especially countries with relatively developed economies have successively implemented electric vehicle technology strategies to promote the upgrading of the automotive industry structure and the electrification of power systems. With the maturity of lithium-ion battery technology and the further reduction in cost, low-speed electric vehicles with huge market potential will surely usher in a rare opportunity for development, which will greatly drive the battery management system (Battery Management System, referred to as: BMS) techn...

Claims

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Application Information

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IPC IPC(8): B60L11/18
CPCB60L58/10B60L58/12B60L58/22B60L58/24B60L2240/545B60L2240/547B60L2240/549Y02T10/70Y02T90/16
Inventor 吴达军
Owner SICHUAN CHANGHONG ELECTRIC CO LTD
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