Battery management system and control method for electric vehicle

A battery management system, electric vehicle technology, applied in secondary batteries, circuits, electrical components, etc., can solve problems such as high temperature of the power battery, shortened service life of the power battery, and potential safety hazards, so as to improve the service life and reduce the battery life. The effect of temperature

Inactive Publication Date: 2016-08-17
BEIJING HAIKE ZHIDONG TECH DEV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When a pure electric vehicle is driving for a long time or encounters high temperature weather, the power battery is prone to overheating, which will greatly shorten the service life of the power battery and cause safety hazards

Method used

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  • Battery management system and control method for electric vehicle
  • Battery management system and control method for electric vehicle
  • Battery management system and control method for electric vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] refer to figure 1 , is a structural block diagram of a battery management system for an electric vehicle provided in Embodiment 1 of the present invention. The battery management system for an electric vehicle in this embodiment may specifically include: a temperature monitoring device 10, a refrigeration cycle channel 11, and a main control device 12, in:

[0030] The temperature monitoring device 10 is connected with the battery compartment of the electric vehicle, and is used for monitoring the battery temperature in the battery compartment, and sending the battery temperature to the main control device. In this embodiment, the temperature monitoring device may specifically be a temperature sensor, which collects the temperature of the battery in the battery compartment in real time. In a preferred embodiment of the present invention, the battery management system of the electric vehicle further includes: a current monitoring device, a voltage monitoring device, spe...

Embodiment 2

[0042] refer to image 3 , is a structural block diagram of a battery management system for an electric vehicle provided in Embodiment 2 of the present invention. The battery management system for an electric vehicle in this embodiment may specifically include: a temperature monitoring device 10, a refrigeration cycle channel 11, a main control device 12, The heating circulation channel 13 , the remote controller 14 , the third circulation channel 15 , the fourth circulation channel 16 and the gas storage tank valve controller 17 .

[0043] It should be noted that the battery management system of an electric vehicle includes: a temperature monitoring device 10, a refrigeration cycle channel 11, a main control device 12, a heating cycle channel 13, a remote controller 14 and / or a third cycle channel 15, a fourth cycle channel The channel 16 and the gas storage tank valve controller 17, the "and / or" includes the following three situations: (1) The battery management system of th...

Embodiment 3

[0053] This embodiment describes the cooling battery of the battery management system of the electric vehicle.

[0054] refer to Figure 4 , is a schematic diagram of a battery management system for an electric vehicle provided in Embodiment 3 of the present invention using a liquid circulation method to cool the battery. Wherein, the main control device 1 is connected with the battery compartment 2, the thermostat 3, the first three-way valve 4 and the second three-way valve 5 respectively; It is connected with the first valve port of the first three-way valve 4; the thermostat 3 is connected with the third valve port of the second three-way valve 5 through a circulation line; the second valve port of the first three-way valve 4 and The second valve port of the second three-way valve 5 is connected through a circulation pipeline. In a preferred embodiment of the present invention, an air conditioner assembly 6 is also connected between the battery compartment 2 and the firs...

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Abstract

The invention provides a battery management system of an electric vehicle and a control method of the battery management system, and aims to solve the problem of performance influences of pure electric vehicle power batteries due to high temperature. The battery management system of the electric vehicle comprises a temperature monitoring device connected with a battery compartment of the electric vehicle, used for monitoring battery temperature in the battery compartment and sending the battery temperature to a master control device, a refrigeration circulation channel connected with the battery compartment of the electric vehicle and used for refrigerating a battery in the battery compartment by a circulating refrigerant, the master control device respectively connected with a collecting device and the refrigeration circulation channel, used for controlling the refrigerant to refrigerate the battery in the battery compartment circularly in the refrigeration circulation channel when the battery temperature exceeds the preset upper limit value. The battery management system of the electric vehicle and the control method of the battery management system can reduce influences on the service life and the capacity of the battery due to the high temperature and prolong the service life of the battery.

Description

technical field [0001] The invention relates to the technical field of battery management, in particular to a battery management system of an electric vehicle and a control method thereof. Background technique [0002] Pure electric vehicles are being popularized due to their low pollution and low noise characteristics. Pure electric vehicles usually use lithium iron phosphate batteries as power batteries. High temperature will affect the capacity and service life of lithium iron phosphate batteries. When a pure electric vehicle is driving for a long time or encounters high temperature weather, the power battery is prone to overheating, which will greatly shorten the service life of the power battery and cause safety hazards. Contents of the invention [0003] A brief overview of the invention is given below in order to provide a basic understanding of some aspects of the invention. It should be understood that this summary is not an exhaustive overview of the invention....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/48H01M10/613H01M10/625H01M10/6568
CPCH01M10/486Y02E60/10
Inventor 郭天祥张杰夫
Owner BEIJING HAIKE ZHIDONG TECH DEV
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