New energy electric vehicle temperature information acquisition and early warning control integrated device and method

A temperature information and control method technology, applied in battery/fuel cell control devices, electric vehicles, electrical devices, etc., can solve the problems of difficult installation, battery temperature detection devices without battery detection, cumbersome installation, disassembly and replacement, etc. To achieve the effect of ensuring accuracy and reliability, prolonging the use time and improving real-time performance

Active Publication Date: 2022-04-05
成都汽车职业技术学校
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The temperature detection devices of existing new energy electric vehicles are all connected by wires, the laying of the lines is complicated, and the installation, disassembly and replacement are also cumbersome
[0003] Some existing temperature detection devices for new energy electric vehicles only detect the temperature of the battery, but do not detect the temperature of the motor, and cannot protect the operation of the motor. The battery is tested, and the test results are not comprehensive enough
[0004] Through the above analysis, the problems and defects of the existing technology are: the existing temperature detection method of new energy electric vehicles can only detect the temperature of a single detection point, the accuracy of temperature detection is low, and the connection lines are cumbersome and difficult to detect. Install

Method used

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  • New energy electric vehicle temperature information acquisition and early warning control integrated device and method
  • New energy electric vehicle temperature information acquisition and early warning control integrated device and method
  • New energy electric vehicle temperature information acquisition and early warning control integrated device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] The present invention provides a vehicle-mounted controller 3, and the method for detecting whether the temperature data of the vehicle-mounted controller 3 is abnormal includes:

[0086](1) The on-board controller 3 first selects a temperature random number s′∈Z p , for i∈{1,…,l}, randomly select λ′ i ,γ′ i ∈ Z p , calculate the temperature parameters of the battery and motor as follows:

[0087]

[0088] The temperature parameter CT of the battery and motor processed by the output part out ={s',C 0 ,(C i,1 ,C i,2 ,λ′ i ,γ′ i ) i∈{1,…,l}};

[0089] (2) The temperature parameter calculation chip of the on-board controller 3 receives the CT out , the result is verified to be correct by first checking the Whether it is true; if it is not true, directly output b=0, which means that the calculation result is incorrect; otherwise, for i∈{1,...,l}, the temperature parameter calculation chip of the on-board controller 3 calculates:

[0090] t i =(aλ' i -v ρ...

Embodiment 2

[0100] like Figure 5 As shown, the present invention provides a new energy electric vehicle set temperature information collection and early warning control method including:

[0101] S101, connect the voice alarm 2 and the data collector 6 to the vehicle-mounted controller 3 of the electric vehicle, and fix the data collector 6 through the mounting plate 20 and the strip-shaped fixing hole 21 . A plurality of wireless temperature detectors are respectively installed on different positions on the surface of the automobile battery 7 and the automobile motor 5, and are fixed by the ring magnet 9 for adsorption. The temperature parameters of the battery and the motor can be detected separately, and the detection is comprehensive.

[0102] S102, the temperature sensor 11 collects temperature data, and transmits the collected temperature data to the data collector 6 through the first ZigBee signal transmitter 12 and the second ZigBee signal transmitter 18, and the data collector ...

Embodiment 3

[0105] Based on embodiment 2, the method for determining the fault point includes:

[0106] mu k and d k Denote the delay from the wireless temperature detector to the on-board controller 3 and the delay from the on-board controller 3 to the actuator caused by the temperature detection network, respectively, in the finite set γ={0,…,μ}, Θ={0,…,d} Take the middle value, and the transition probability matrix is ​​G=[λ ij ], H=[π rs ],λ ij and π rs as follows:

[0107] lambda ij =Prob{μ k+1 =j|μ k = i}, π rs =Prob{d k+1 =s|d k =r}

[0108] where λ ij ≥0,

[0109] A random variable α with value {0,1} k ,β k Respectively represent the loss of the data packet between the wireless temperature detector and the on-board controller 3 and between the on-board controller 3 and the actuator. When the value of the random variable is 1, it means that the data packet transmission is successful; otherwise, it means that the data packet transmission fails, and the following co...

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Abstract

The invention belongs to the technical field of new energy electric vehicles, and discloses a new energy electric vehicle temperature information collection and early warning control device and method.The new energy electric vehicle temperature information collection and early warning control device is characterized in that a battery temperature detection assembly and a motor temperature detection assembly of the new energy electric vehicle temperature information collection and early warning control device are in signal connection with a data collector; the data collector and the voice alarm are respectively connected with the vehicle-mounted controller; the battery temperature detection assembly and the motor temperature detection assembly are respectively provided with a plurality of wireless temperature detectors. According to the invention, the battery temperature detection assembly and the motor temperature detection assembly are arranged to detect the temperature parameters of the battery and the motor respectively, and the battery temperature detection assembly and the motor temperature detection assembly are arranged to be a plurality of wireless temperature detectors, so that the temperatures of different positions of the battery and the motor can be detected; the real-time performance of temperature detection can be effectively improved, line laying is omitted, and installation is convenient.

Description

technical field [0001] The invention belongs to the technical field of new energy electric vehicles, and in particular relates to a device and method for collecting temperature information and early warning control of new energy electric vehicles. Background technique [0002] At present, new energy electric vehicles are a new type of power source vehicles. Most new energy electric vehicles use electricity as the driving force, and large-capacity polymer lithium batteries are the first choice. The battery will generate heat during charging and discharging, and the temperature Too high will affect the service life and working performance of the lithium battery, so it is necessary to check the temperature of the battery body of the new energy electric vehicle. The existing temperature detection devices of new energy electric vehicles are all connected by wires, the laying of the lines is complicated, and the installation, disassembly and replacement are also cumbersome. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L3/00B60L58/10B60Q9/00G08C17/02G01K13/00
CPCY02T10/70
Inventor 张兴华张瑞民李平徐利强刘堂俊霍梦楠李春林冯忠友陈真王世超周中荣康科超
Owner 成都汽车职业技术学校
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