Dynamic power supply managment system for electric vehicle

A power supply and management system technology, applied in electric vehicle charging technology, electric vehicles, battery circuit devices, etc., can solve the problems of battery performance degradation, damage, unsafe hidden dangers, etc., to improve service life, ensure use safety, The effect of shortening the recharge time

Active Publication Date: 2005-06-08
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to reduce the charging and discharging time of the battery, a large current charging and discharging method is generally used, but this will easily cause the performance of the battery to be reduced or even damaged, resulting in some unsafe hidden dangers. Therefore, it is necessary to improve the charging and discharging circuit of the battery

Method used

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  • Dynamic power supply managment system for electric vehicle
  • Dynamic power supply managment system for electric vehicle

Examples

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Embodiment Construction

[0032] see figure 1 , the electric vehicle power management system 1 of the present invention includes: a battery monitoring / control circuit 3 and a charging and discharging circuit 4, both of which are connected to the storage battery 2, wherein the battery monitoring / control circuit 3 can monitor the voltage of the storage battery 2 in real time , charge and discharge current, temperature and other parameters, and then make appropriate protection and control commands for the charge and discharge circuit 4 based on these parameters; The control command is used to charge the storage battery 2 in series or balance. In addition, the battery detection / control circuit 3 is also connected with the vehicle management system ECU 6 through the CAN communication bus 5 , and can display the status information of the battery 2 on the instrument panel 7 .

[0033] The storage battery 2 uses a lithium-ion secondary battery with a large specific energy as a power source, and at the same ti...

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Abstract

This invention discloses an electro mobile power managing system, including the battery monitoring / control circuit and charge and discharge circuits, and the two connect to the accumulator. The relating battery monitoring / control circuits can real time monitor the parameters of the voltage, charge and discharge current and temperature and etc of the accumulator, and make proper protective and control order to the charge and discharge circuits based on the parameters. The relating circuits have series and equalizing charge and discharge circuits, the sampling battery state data automatically judges and makes the choosing and controlling orders based on the battery monitoring / controlling circuits, and series or equalizing charges the accumulator. In addition, the batter monitoring / controlling circuit connects to ECU through CAN communication bus, and displays the accumulator state information on the instrument board.

Description

【Technical field】 [0001] The invention relates to an electric vehicle power source management system. 【Background technique】 [0002] With the development of society and economy, the energy and environmental protection issues brought by fuel vehicles have gradually attracted widespread attention from all over the world. Due to the increasing scarcity of natural resources, especially oil resources, and the environmental pollution caused by vehicle exhaust emissions, all countries have plans to develop electric vehicles to seek new energy supplies. Similarly, my country also regards the development of electric vehicles as a national energy strategy. An important aspect, and has been listed as a key project of the National 863 Program. [0003] In recent years, electric vehicle technology has made great progress. For example, batteries (lead-acid / nickel-metal hydride / nickel-chromium batteries, etc.) are generally used for power supply. At present, lithium-ion secondary batterie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H02J7/02
CPCY02T10/70Y02T90/16
Inventor 贺小为王淳贺静王传福
Owner BYD CO LTD
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