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Modularized heat dissipation device of power battery pack

A power battery pack and cooling device technology, applied in the field of power battery cooling, to achieve high heat dissipation efficiency and maximize energy per unit volume

Inactive Publication Date: 2022-01-28
陈攀攀
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of the above-mentioned defects in the prior art, the purpose of the present invention is to provide a modular cooling device for a power battery pack, which solves the technical problem of "effectively utilizing the high thermal conductivity of the heat pipe without increasing the size of the battery pack"

Method used

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  • Modularized heat dissipation device of power battery pack
  • Modularized heat dissipation device of power battery pack
  • Modularized heat dissipation device of power battery pack

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Such as Figure 1-7 As shown, a modular cooling device for a power battery pack, including

[0048] A battery module 10, the battery module 10 includes a plurality of cylindrical battery cells 11, the axis of the plurality of battery cells 11 is arranged parallel to the height direction of the battery module and forms at least two layers with a certain row spacing and column spacing array arrangement; a plurality of said battery modules 10 arrays are fixed in the power battery pack housing 1;

[0049] The clamping mechanism 20, the clamping mechanism 20 is used to maintain the array arrangement of the battery modules and realize the electrical connection of the battery cells 11;

[0050] The first heat dissipation 30, the first heat dissipation 30 includes a plurality of heat dissipation strips 31, the heat dissipation strips 31 are continuously extended between the rows of the battery module 10, and are used to take away two of the battery cells 11. the heat of the o...

Embodiment 2

[0070] The axes of the battery cells are arranged perpendicular to the height direction of the battery module and arranged in a multi-layer array. The second integral liquid feeding chamber for heat dissipation is replaced by parallel multi-row liquid feeding chambers. The other structures are the same as in Example 1.

[0071] Such as Figure 8 , shown in 9, a modular cooling device for a power battery pack, including

[0072] A battery module 10, the battery module 10 includes a plurality of cylindrical battery cells 11, the axes of the plurality of battery cells 11 are arranged perpendicular to the height direction of the battery module and form at least three layers with a certain row spacing and column spacing Arranged in an array; a plurality of battery modules 10 are fixed in an array in the power battery pack casing 1;

[0073] When the axis of the battery cells 11 is placed horizontally, the array is arranged in at least 3 layers, the height of the battery cells in t...

Embodiment 3

[0076] The first heat dissipation is changed from liquid cooling to loop heat pipes, and other structures are the same as those in Embodiments 1 and 2.

[0077] Such as Figure 10 , 11 As shown, a modular heat dissipation device for a power battery pack, the first heat dissipation 30 is a loop heat pipe, and the heat dissipation strip 31 is used as an evaporation part to communicate with the condensation part 42 through a steam pipe and a liquid return pipe. The inner cavity of the heat dissipation strip 31 is provided with a liquid-absorbing core 36 and a metal foam 37. When the axes of the battery cells 11 are arranged in an array parallel to the height direction of the battery module, the liquid-absorbing core strip and the foam metal strip are within the width of the heat dissipation strip. The direction is closely arranged in the inner cavity up and down, and both of them are arranged in the inner cavity extending along the entire length direction of the heat dissipation s...

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Abstract

A modularized heat dissipation device of a power battery pack comprises a battery module (10), a butt clamp mechanism (20), a first heat dissipation device (30) and a second heat dissipation device (40), and the battery module (10) comprises at least two layers of cylindrical single batteries (11) which are arranged in an array; the firstheat dissipation device (30) comprises a plurality of heat dissipation strips (31) for taking away heat of two opposite first side surfaces (12) of the battery monomers (11); the second heat dissipation device (40) comprises a plurality of arrays of evaporation columns (43) for taking away heat from two opposite second side surfaces (13) of the battery cells (11); and the total area of the two first side surfaces (12) and the two second side surfaces (13) of the battery monomer (11) is greater than or equal to 80% of the cylindrical surface area of the battery monomer. According to the modularized heat dissipation device of the power battery pack, the unit volume energy is maximized on the premise of effective heat dissipation due to accumulation of the battery modules.

Description

technical field [0001] The invention relates to the technical field of power battery cooling, in particular to a modular cooling device for a power battery pack. Background technique [0002] For a cylindrical lithium battery, the number of battery cells required to reach a battery pack for a powered vehicle is enormous. The battery pack of Tesla Model-S weighs 900kg, has a power of 85kwh, and a voltage of about 400V. It is composed of 6 battery packs in series, and each battery pack is formed by parallel connection of 74 above-mentioned battery cells. Therefore, the entire battery pack is composed of 7104 18650 lithium battery cells. [0003] Thousands of battery cells with the best performance are integrated into a poor battery pack, resulting in a decrease in the overall performance of the battery pack. The thermal field balance of the battery pack requires that the maximum temperature of each of thousands of battery cells be lower than 40°C, and the temperature differe...

Claims

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Application Information

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IPC IPC(8): H01M10/613H01M10/625H01M10/643H01M10/6555H01M10/6557H01M10/6569H01M10/6568
CPCH01M10/613H01M10/625H01M10/643H01M10/6555H01M10/6557H01M10/6569H01M10/6568Y02E60/10
Inventor 陈攀攀
Owner 陈攀攀
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