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Battery and battery pack with heat dissipation member

A component and battery technology, applied in the direction of secondary batteries, circuits, electrical components, etc., can solve the problems of battery heat dissipation, instability of battery electrochemical system, battery short circuit, etc.

Active Publication Date: 2018-06-26
DONGGUAN POWERAMP TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Regardless of whether it is a series-parallel mode in which battery cells are combined side by side, or a high-rate charge and discharge of the battery, the heat dissipation problem of the battery will be aggravated, and the temperature of the battery center will be abnormal.
However, if the battery temperature is too high, it will in turn cause the electrochemical system of the battery to be unstable, and the battery will short-circuit or catch fire, causing safety problems.

Method used

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  • Battery and battery pack with heat dissipation member
  • Battery and battery pack with heat dissipation member
  • Battery and battery pack with heat dissipation member

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as Figure 1~3 As shown, a battery with a heat dissipation member includes an electric core 4 and a heat dissipation member 5 coated on the electric core 4. The heat dissipation member 5 includes a separator 1 and a heat dissipation medium, and the separator 1 is provided with a heat dissipation medium (not shown) The flowing channel 6 is coated with a coating (not shown) with wetting properties on the inner wall of the channel 6 . When the battery generates a large amount of heat during charging and discharging, use a separator with good thermal conductivity and a coating with wetting properties (the coating is preferably a nano paint material coating, as long as a stable coating can be formed in theory , At the same time, any coating material that can have good wet contact performance with the heat dissipation medium can be used.) Longitudinal ( figure 2 The direction of the Y-axis) conducts heat longitudinally to the channel and the heat dissipation medium, an...

Embodiment 2

[0042] Such as Figure 4 and 5 As shown, the difference from Example 1 is that the heat dissipation layer 2 of this embodiment is coated on one side of the separator 1 by means of intermittent coating, and both the heat dissipation layer 2 and the separator 1 are coated with heat-conducting double-sided The adhesive layer 3 improves the longitudinal conduction function when used in the battery to generate heat.

[0043] In addition, the channel 6 is arranged in an "O" shape in the partition 1, and the heat dissipation medium in the channel 6 is liquid water; the material of the partition 1 is silica gel with a thickness of 10 μm.

[0044] Others are the same as those in Embodiment 1, and will not be repeated here.

Embodiment 3

[0046] Such as Figure 6 and 7 As shown, the difference from Example 1 is that the heat dissipation layer 2 of this embodiment is coated on both sides of the separator 1, and the heat dissipation layer 2 is coated on both sides of the separator 1 in a continuous pattern coating method, and A thermally conductive double-sided adhesive layer 3 is bonded to one of the heat dissipation layers 2 . Compared with Example 1, such a structure increases the heat dissipation capacity and improves the working stability of the structure applied in the battery.

[0047] In addition, the channel 6 is arranged in an "I" shape in the partition 1, and the heat dissipation medium in the channel 6 is propylene glycol; the material of the partition 1 is activated carbon with a thickness of 10 μm.

[0048] Others are the same as those in Embodiment 1, and will not be repeated here.

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Abstract

The invention belongs to the technical field of batteries, and in particular relates to a battery with a radiating component. The battery comprises a battery cell and the radiating component covered on the battery cell, the radiating component comprises a partition and a radiating medium, a channel for the flowing of the radiating medium is arranged in the partition, and a coating with wetting property is coated on the inner wall of the channel. When the battery produces a plenty of heat in the charged or discharging process, the partition material with good heat conducting performance and the coating with the wetting property are used for longitudinal heat conduction to longitudinally transfer the heat to the channel and the radiating medium, the radiating medium which is highly wetted and dispersed in the inner wall of the channel is used for quickly absorbing the heat so as to promote the convection motion of the radiating medium, thereby horizontally emitting the heat through the radiating medium with good heat conducting performance in time, and improving the stability of the battery working and prolonging the service life of the battery. Furthermore, the invention further disclosed a battery pack with the radiating component.

Description

technical field [0001] The invention belongs to the field of battery technology, in particular to a battery and a battery pack with heat dissipation components. Background technique [0002] Lithium-ion batteries and their battery modules have the advantages of high output voltage, high specific capacity, stable discharge voltage, high cycle life and high energy density, so lithium-ion batteries and their modules have been widely used in notebook computers, tablet computers, digital In the fields of cameras, mobile phones, and even electric vehicles, energy storage systems, etc., the current development direction of lithium-ion batteries is to enter the field of consumer electronics with higher energy density, lighter and thinner, which requires their combination to have greater capacity support The product runs for a longer period of time, while the battery charging time must be shorter, and it must meet the charging current of a larger rate. The fulfillment of these condi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/613H01M10/623H01M10/6567
CPCY02E60/10
Inventor 陈小明黄堪祝
Owner DONGGUAN POWERAMP TECH LTD
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