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A method for detecting the temperature of each point of a battery pack

A detection method and technology for battery packs, applied in thermometers, application of thermometers, measurement of heat, etc., can solve problems such as failure to detect battery packs

Active Publication Date: 2018-01-09
XJ POWER CO LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no effective method to detect the temperature of each point of the battery pack.

Method used

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  • A method for detecting the temperature of each point of a battery pack
  • A method for detecting the temperature of each point of a battery pack
  • A method for detecting the temperature of each point of a battery pack

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as figure 1 As shown, all the single cells in the battery pack are stacked into a cuboid, and a battery box is attached to the outside thereof, so the temperature on the surface of the battery box is the temperature of the outer surface of the battery pack. Among the six outer surfaces of the battery pack, five surfaces are selected, which are respectively the front surface, the rear surface, the left surface, the right surface and the upper surface, and a center point on each surface of the five surfaces is provided with A temperature detection point for figure 1 In the orientation, the temperature detection point corresponding to the front surface is temperature sampling point 3, the temperature detection point corresponding to the rear surface is temperature sampling point 1, the temperature detection point corresponding to the left surface is temperature sampling point 2, and the temperature corresponding to the right surface is The detection point is the temp...

Embodiment 2

[0085] This embodiment differs from Embodiment 1 in that:

[0086] In this embodiment, the temperature model is established only based on a pair of opposite surfaces. If the area of ​​the front and rear opposite surfaces is greater than the area of ​​the left and right opposite surfaces, then the front and rear opposite surfaces are selected for illustration. The temperature model of the entire battery pack is established according to the front and rear surfaces, and the temperature of each point of the battery pack is detected according to the model. Then, in this embodiment, since only one temperature model of the entire battery pack is established, there is no need for subsequent operations of adding and averaging two temperature models of the entire battery pack.

[0087] Establishing the temperature model of the entire battery pack based on the front and rear surfaces has been described in detail in Embodiment 1, and will not be repeated here.

[0088] In the above embod...

Embodiment 3

[0090] The difference between this embodiment and embodiment 1 is:

[0091] In this embodiment, the temperature model is established only according to one surface, for example, the temperature model of the entire battery pack is established only according to the front surface, specifically:

[0092] First, according to the temperature detection point 3, a surface temperature model is established, which has been described in detail in Embodiment 1 and will not be repeated here.

[0093] Then, the temperature model of half the battery pack is established as:

[0094] Make several slices of the battery pack, all slices are parallel to the front surface, and the distance between the slices and the front surface is less than or equal to H / 2, and for a certain point on a certain slice, the calculation of the temperature of the certain point The formula is Q'=Q+h×λ, wherein, draw a perpendicular line from the certain point to the front surface, and the distance between the intersect...

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PUM

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Abstract

The invention relates to a method for detecting the temperature of each point of a battery pack. The shape of the battery pack is a cuboid, comprising the following steps: (1) A temperature detection point is set on a certain surface of the battery pack; (2) According to Set the temperature detection point, establish the temperature model of the surface; (3), establish the temperature model of the entire battery pack; (4), when detecting the temperature of each point of the battery pack, substitute the temperature information of the temperature detection point into the entire battery pack In the temperature model of the battery pack, the temperature of each point of the battery pack can be obtained. The process of the method is simple. After the temperature model is established, the temperature values ​​of each point of the entire battery pack can be obtained only by the temperature information at one temperature detection point, without too many calculations and too many parameters.

Description

technical field [0001] The invention relates to a method for detecting the temperature of each point of a battery pack. Background technique [0002] With the development of society, the application of rechargeable batteries that can be recharged and discharged more and more widely. In practical applications, in order to achieve a certain voltage, power and energy level, and to meet the requirements of the load, it is often necessary to assemble dozens or even hundreds of single batteries together in series or in parallel to form a battery pack. Meet the needs of high voltage and high capacity. Generally, for the convenience of placing the battery pack, the single cells are usually stacked into a rectangular parallelepiped to form a rectangular parallelepiped battery pack. [0003] The theory requires that the internal resistance, capacity and other parameters of these single batteries should be as consistent as possible, so that the power released by the battery can be ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K13/00
Inventor 刘建鹏曹亚韩海伦常志国乔海强尹强宋海飞王锐王聪慧邓思维吴效威魏艳妍龚艳苹
Owner XJ POWER CO LTD