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Special power battery management system for electric vehicle and implementation method thereof

A technology for power batteries and pure electric vehicles, which is applied in the field of lithium battery management systems for pure electric vehicles, can solve the problems of insufficient large-capacity series lithium battery packs, insufficient reliability, and single functions, etc., to improve energy utilization. , prolong battery life, and facilitate the effect of subsequent expansion

Inactive Publication Date: 2011-02-16
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although people are constantly researching new technical means to improve and perfect the existing battery management system, the existing battery management system for pure electric vehicles still has insufficient reliability, too single function, and the management system architecture has not been uniformly planned and optimized. , cannot meet the requirements of large-capacity series lithium battery packs and other outstanding shortcomings, cannot guarantee the safety of charging, and cannot meet the needs of vehicle operation

Method used

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  • Special power battery management system for electric vehicle and implementation method thereof
  • Special power battery management system for electric vehicle and implementation method thereof
  • Special power battery management system for electric vehicle and implementation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0027] see figure 1 , a pure electric vehicle power battery management system, the system mainly includes a central control module 1, a measurement and control module 2, a battery pack 3, a motor controller 4, a DC motor 5, an on-board charger 6, a current and power detection module 7, and an on-board Liquid crystal display module 8, switch group 9, fast charging system 10, vehicle master controller 11, test display module 12, storage module 13, clock module 14, temperature management module 15. The system adopts a distributed structure, and only one communication bus CAN1 is needed to realize the communication between the central control module 1 and the measurement and control module 2, motor controller 4, vehicle charger 6, vehicle liquid crystal display module 8 and other equipment. Among them, each module is powered by a 12V power supply.

[0028] The central control module 1 is the core of the system to collect and control data information. On the one hand, the central...

Embodiment 2

[0044] The system structure of embodiment 2 is basically the same as that of the above embodiment 1, the difference is that in embodiment 2, the system also includes another communication bus CAN2, which is used for the central control module 1 and the fast charging system 10, the vehicle master controller 11 and other extended equipment communication, please refer to figure 1 . The fast charging system 10 is mainly to cooperate with the electric vehicle charging station under construction ( figure 1 not shown). The vehicle general controller 11 and the central control module 1 realize the coordinated work of the electric vehicle through data exchange. In addition, the central control module 1 is also equipped with an RS-485 bus interface connected to the test display module 12, which is used for the test management system during testing or failure.

[0045] The working state of the battery management system according to Embodiment 1 of the present invention will be describ...

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Abstract

The invention discloses a special power battery management system for an electric vehicle and an implementation method thereof. The power battery management system comprises a central control module, a measurement and control module, a battery pack, a motor controller, a direct-current motor, a vehicle-mounted charger, a current and electric quantity detection module, a vehicle-mounted liquid crystal display module, a switching group, a memory module, a clock module and a temperature management module. The system realizes communication of the central control module with the measurement and control module, the vehicle-mounted charger, the motor controller and the vehicle-mounted liquid crystal display module by only using a CAN communication bus. The battery management system has three working modes of charging, discharging and fault, and can realize acquisition, management and control for all parameter information on voltage, temperature, current, electric quantity and the like for the battery of the system, safe charging and fault early warning of the battery. Compared with the prior art, the battery management system has the advantages of higher reliability, charging safety, stable system work, comprehensive function and convenient subsequent expansion.

Description

technical field [0001] The invention relates to a battery management system, in particular to a lithium battery management system for a pure electric vehicle and an implementation method thereof. Background technique [0002] With the rapid development of the automobile industry, the pressure on urban traffic is increasing, the complexity of traffic management is also increasing, and the pollution and damage to the environment are becoming more and more serious. In order to reduce damage to the environment, pure electric vehicles with zero emissions and no pollution are gradually becoming the mainstream of the market. Pure electric vehicles use rechargeable and recyclable battery packs, generally using lithium batteries with high energy density, long cycle life, and low self-consumption. Due to the differences between individual lithium batteries, imbalances are prone to occur after repeated charging / discharging, resulting in a decrease in battery life and safety accidents....

Claims

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Application Information

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IPC IPC(8): H02J7/00H01M10/42
CPCY02E60/10
Inventor 王自鑫李佳明袁昌杰陈瑞祥
Owner SUN YAT SEN UNIV
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