Fault handling system and handling method of lithium ion power battery system

A power battery and processing system technology, applied in battery/fuel cell control devices, electric vehicles, electrical devices, etc., can solve problems such as lack of vehicle functions, improve energy management efficiency, reduce fuel consumption, and improve effect of possibility

Active Publication Date: 2016-06-22
CHINA FIRST AUTOMOBILE
View PDF6 Cites 31 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, when the battery fails, the power battery manufacturers generally use the battery management system to limit the power of the power battery, but only control it from two aspects of charging and discharging. This method of limiting power limits the power of the vehicle in some cases. Some functions that should not be restricted
as attached figure 1 As shown, if only the overall control of charging and discharging of the power battery is carried out, when the DC / DC relay fails, although the charger cannot be used for charging, the vehicle braking energy recovery can be used for charging, resulting in abnormal vehicle functions. lack of

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Fault handling system and handling method of lithium ion power battery system
  • Fault handling system and handling method of lithium ion power battery system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] Embodiments of the present invention are described below in conjunction with accompanying drawings, but the present invention is not limited thereto:

[0030] Such as figure 1 Shown is the schematic diagram of the high-voltage design of the plug-in hybrid electric vehicle. This plug-in hybrid vehicle has a charging mode and a driving mode. Among them, the driving mode is divided into braking energy recovery mode and electric drive mode.

[0031] A fault handling system for a lithium-ion power battery system, mainly composed of a power battery 101, a motor 102, a charger, a DC / DC assembly 103, a No. 1 fuse 104, a battery assembly 106, a No. 2 fuse 112 and battery management System 113 consists of;

[0032] The charger and DC / DC assembly 103 is composed of three main circuit high-voltage relays connected to the motor 102 and two charging and DC / DC circuit high-voltage relays connected to the charger and DC / DC;

[0033] The three main circuit high-voltage relays are co...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a fault handling system of a lithium ion power battery system. The fault handling system mainly comprises a power battery, a motor, a charger, a DC / DC assembly, a No.1 fuse, a battery assembly, a No.2 fuse, and a battery management system. The invention further relates to a fault handling method. The method comprises the steps of when the power battery is out of order, dividing power battery faults into 8 grades according to the damage degree of the power battery faults to the power battery and a vehicle; effectively controlling the charge and discharge power of the power battery from the point of power control; and controlling the charge power of the charger to the power battery, the charge power of vehicle energy recycling to the power battery, the discharge power of the power battery to the motor, and the discharge power of the power battery to the DC / DC. The power battery fault handling method is provided from the point of charge and discharge power control which is the most important for new energy vehicles, and good application value for power battery safety and reliability improvement, and popularization of lithium ion power batteries in new energy vehicles is achieved.

Description

technical field [0001] The invention belongs to the field of power batteries for new energy vehicles, and in particular relates to a processing system and a processing method for a lithium-ion power battery system, which are applied to a battery management system. Background technique [0002] In recent years, lithium-ion power batteries have been used in batches in new energy vehicles. Affected by factors such as the large number of lithium-ion power battery cells, the wide range of available capacity, large charging and discharging currents, and complex operating environments, designing a reasonable battery fault handling method is of great significance for improving the safety and reliability of power batteries. [0003] Lithium-ion power batteries may have single faults, temperature faults, communication faults, battery management system (BMS) hardware faults, current over-limit and high-voltage relay faults and other faults in practical applications. Although protective...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B60L11/18B60L3/00
CPCB60L3/0046B60L58/10B60L58/12Y02T10/70
Inventor 刘海洋刘东秦许立超杜圣荣
Owner CHINA FIRST AUTOMOBILE
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap