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Battery unit and motor vehicle provided with at least one such unit

A technology for motor vehicles and battery packs, used in battery/battery traction, large flat batteries/batteries, battery pack components, etc., which can solve problems such as high cost and limiting cooling efficiency

Pending Publication Date: 2021-11-16
NOVARES FRANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this known solution has the disadvantage of exaggeratedly extending the heat transfer loop, which limits the efficiency of the cooling
In addition, the cost of manufacturing and assembling such battery structures is relatively high

Method used

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  • Battery unit and motor vehicle provided with at least one such unit
  • Battery unit and motor vehicle provided with at least one such unit
  • Battery unit and motor vehicle provided with at least one such unit

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0054] Example 1: Use according to Figure 1a and Figure 1b A battery pack of the configuration indicated in . The battery pack has a rectangular parallelepiped shape defined by a length of 277 mm, a width of 262 mm, and a thickness of 254 mm. Specifically, the battery pack includes 24 pouch-type cells C ("Pouch Batteries") assembled together in the form of 12 blocks of two cells separated by a foam board PS formed of silicone, the cells C set Inside the plastic housing B. The housing B rests on a support S, inside which the coolant LR circulates. Heat transfer takes place by means of aluminum and L-shaped conductive plates PC, each plate PC is arranged between two adjacent cell blocks. Each cell C has a cuboid shape defined by a length of 227 mm, a width of 250 mm, and a thickness of 10.5 mm. The heat emitted by each cell C is 10W. The corresponding thermal conductivities λ of the individual constituent elements of the battery are given in Table 1 below:

[0055] [Tabl...

example 2

[0058] Example 2: Use according to Figure 2 to Figure 4 Indicates the configuration of the battery pack. This battery pack 1 has a rectangular parallelepiped shape defined by a length of 316 mm, a width of 330 mm, and a thickness of 132 mm. Specifically, the battery pack 1 comprises 24 pouch-type cells 2 ("pouch cells") assembled in the form of 12 blocks 2' of two cells separated by a foam board 8 formed of silicone, the cells 2 is set in a plastic housing 3 in which the coolant LR circulates. The heat transfer takes place by means of plastic cooling plates 5 traversed by a plurality of internal channels 53, each plate 5 being arranged between two blocks 2' of adjacent units. Each cell 2 has a cuboid shape defined by a length of 100 mm, a width of 302 mm, and a thickness of 11.7 mm. The heat released by each cell 2 is 20W. The corresponding thermal conductivities λ of the different constituent elements of the battery are given in Table 2 below:

[0059] [Table 2]

...

example 3

[0063] Example 3: According to Figure 5 , Figure 6 and Figure 7a , Figure 7b The configuration shown in uses a battery pack. This battery pack 1' has a rectangular parallelepiped shape defined by a length of 305 mm, a width of 330 mm and a thickness of 132 mm. Specifically, the battery pack 1' comprises 24 pouch-type cells 2 ("Pouch Batteries") assembled in the form of 12 blocks 2' of two cells separated by a foam board 8 formed of silicone, The unit 2 is arranged inside a housing 3 made of plastic material HCPC, in which a coolant LR circulates. The heat transfer takes place by means of cooling plates 5' of plastic material HCPC and of generally flat shape, each plate 5 being arranged between two blocks 2' of adjacent units. Each cell 2 has a cuboid shape defined by a length of 100 mm, a width of 302 mm, and a thickness of 11.7 mm. The heat released by each battery cell 2 is 20W. The corresponding thermal conductivities λ of the different constituent elements of th...

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PUM

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Abstract

The invention relates to a battery unit (1, 1'), in particular for an electric or hybrid motor vehicle, comprising: a plurality of battery cells (2), optionally physically grouped into modules (2') of two or more battery cells (2), a housing (3) that accepts and surrounds said plurality of battery cells (2), said housing (3) comprising a bottom wall (31), on which the battery cells (2) rest, a top wall (32), arranged above the battery cells (2), and side walls (33) connecting the lower (31) and upper (32) walls, characterized in that at least one cooling channel (4) passes through each of the lower (31) and upper (32) walls of the housing (3), via which a coolant (LR) is able to flow, said cooling channel (4) being configured to cover the entirety of the surface of the lower wall (31), or of the upper wall (32), and in that the lower (31) and upper (32) walls of the housing (3) are connected by a plurality of cooling plates (5, 5'), each cooling plate (5, 5') being arranged between two adjacent battery cells (2), or modules (2') of adjacent battery cells, or being in contact with at least one battery cell (2), and being configured to transmit the heat generated by the battery cells (2) to the coolant (LR).

Description

technical field [0001] The invention relates to the field of autonomous electrical energy sources, in particular on-board autonomous electrical energy sources for motor vehicles, and to battery packs and electric or hybrid motor vehicles equipped with at least one such battery pack. Background technique [0002] Electric or hybrid motor vehicles are equipped with batteries that allow the storage of the electrical energy required for their operation. The current challenge calls for optimizing the design of the battery for optimal performance in terms of life and range. Charging time is also an important factor in the daily use of these batteries. For this purpose, batteries with high storage density are increasingly being used. They are usually formed from multiple battery cells connected in series or parallel that can be physically combined in blocks or modules. [0003] Ideally, these high storage density batteries need to operate at temperatures comprised between 20°C a...

Claims

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Application Information

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IPC IPC(8): H01M50/249H01M50/258H01M50/244H01M10/613H01M10/625H01M10/6557H01M10/6568H01M10/04B60L50/64
CPCH01M10/0413H01M10/647H01M10/613H01M10/625H01M10/6557H01M10/6568H01M2220/20Y02E60/10Y02P70/50H01M50/249B60L50/64H01M50/227H01M50/211H01M10/6567H01M10/6555
Inventor 丹尼尔·布鲁泽塞
Owner NOVARES FRANCE