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A battery management system for an electric vehicle

A battery management system, a technology for electric vehicles, applied in electric vehicles, battery circuit devices, secondary battery repair/maintenance, etc., can solve problems such as backward functional safety design

Active Publication Date: 2016-08-17
奇瑞新能源汽车股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] With the increasing production of electric vehicles, its functional safety will be an important indicator for evaluating system reliability. However, the functional safety design of the battery management system, which is the core component of electric vehicles, lags behind other core components seriously under the current situation.

Method used

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  • A battery management system for an electric vehicle

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Embodiment Construction

[0017] like figure 1 Shown, the present invention constitutes redundant backup structure for single-chip microcomputer 9 and FPGA6 by data line 8; Single-chip microcomputer 9, FPGA6 pass main control, detection line 10 and backup control, detection line 4 access control I\O unit 3 respectively, control I \O Unit 3 is connected to the controlled object 1 through the signal line 2.

[0018] The FPGA 6 is provided with a control algorithm hard-wired logic unit 5 , which is connected to the control I / O unit 3 through backup control and detection lines 4 . The single-chip microcomputer 9 is connected with the FPGA 6 through the auxiliary control port 7 .

[0019] The single-chip microcomputer 9 receives the sensor signal 12 delivered by the battery pack sensor 11 in real time. The single chip microcomputer 9 is provided with a vehicle communication port 13 .

[0020] The present invention uses FPGA6 as the hardware redundancy backup system of single-chip microcomputer 9. During...

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Abstract

The invention discloses a battery management system of an electric car. The battery management system is characterized in that the management system is of a redundant backup structure formed by a single chip microcomputer and an FPGA through a data line, the single chip microcomputer and the FPGA are respectively connected into a control I / O unit through a master control and detection line and a backup control and detection line, and the control I / O unit is connected into a controlled object through a signal line. According to the system, the FPGA is used as a backup system, the advantages of being programmable and high in response speed of the FPGA are utilized, the flexibility and integrality of the system are greatly enhanced, and the number of fault points of the system is reduced.

Description

technical field [0001] The invention relates to the field of design and manufacture of electric vehicles, in particular to a battery management system of the electric vehicle. Background technique [0002] With the enhancement of people's awareness of environmental protection, people pay more and more attention to the problem of environmental pollution. As a new type of energy vehicle, electric vehicles have advantages that traditional fuel vehicles cannot match in terms of emissions. [0003] With the increasing production of electric vehicles, its functional safety will be an important indicator for evaluating system reliability. However, the functional safety design of the battery management system, which is a core component of electric vehicles, lags behind other core components seriously under the current situation. [0004] In view of the above problems, providing a new type of battery management system for electric vehicles to safely manage the battery pack and avoid ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00H01M10/42
CPCY02E60/10
Inventor 邬学建
Owner 奇瑞新能源汽车股份有限公司