WO2019039852A1 - Method for determining heat dissipation material dispensing device - Google Patents

Abstract

The present invention relates to a method for determining a heat dissipation material dispensing device. Provided according to an aspect of the present invention is a method for determining a heat dissipation material dispensing device, the method comprising the steps of: detecting the inner material of the dispensing device from a heat dissipation material discharged from the dispensing device; and determining the suitability of the dispensing device on the basis of the amount of the detected inner material.

Description

Determination method of heat dissipating material dispensing device

The present invention relates to a method of determining a heat dissipating material dispensing apparatus.

This application claims the benefit of priority based on Korean Patent Application No. 10-2017-0105934 dated August 22, 2017, and Korean Patent Application No. 10-2018-0097734 dated August 22, 2018, The entire contents of which are incorporated herein by reference.

BACKGROUND ART A battery, a television, a video, a computer, a medical instrument, an office machine, a communication device, or the like generates heat during operation, and an increase in temperature due to the heat causes operation failure or destruction. And a heat dissipating member used for the heat dissipating member.

For example, there is known a method of transferring heat to a cooling medium such as cooling water, or suppressing temperature rise through heat conduction to a heat sink using a metal plate or the like having a high thermal conductivity such as aluminum or copper.

In order to efficiently transfer the heat from the heat source to the cooling medium or the heat sink, it is advantageous that the heat source and the cooling medium or the heat sink are thermally connected to each other as much as possible.

On the other hand, there is a demand for a dispensing device that requires high heat dissipation performance due to high power output of the battery module, increases the filling amount of the heat dissipation filler, reduces heat resistance with a thin thickness during filling, and can apply to irregular portions.

Further, when selecting a dispensing apparatus, it is important to predict and determine the life span and durability problem due to abrasion.

Disclosure of Invention Technical Problem [8] The present invention provides a method of determining a dispensing device for a heat dissipating material, which can predict the service life and durability due to abrasion.

According to an aspect of the present invention, there is provided a method of determining a dispensing apparatus for a heat dissipating material, comprising the steps of: detecting an inner material of a dispensing apparatus from a heat dissipating material flowing out of the dispensing apparatus; And determining the suitability of the dispensing apparatus based on the detected amount of the inner material.

Further, in the step of determining conformity, if the internal material is detected to be less than a predetermined amount, the dispensing apparatus may be determined to be suitable.

Further, the inner material may include iron (Fe).

Further, in the step of determining the suitability, if the iron is detected as 30 mg / kg or less, it can be determined that the dispensing apparatus is suitable.

Also, in the step of determining the suitability, preferably the dispensing device may be determined to be suitable if iron is detected to be less than 10 mg / kg.

Further, the heat-radiating material may include a urethane-based resin component and a thermally conductive filler.

Further, the heat dissipation material may include a filler having a Mohs hardness of 8 or more.

In addition, the heat dissipation material may have a filler having a Mohs hardness of 8 or more and 80 wt% or more of the total filler.

In addition, the heat dissipation material may have a filler weight of 70 wt% or more of the total paste weight.

In addition, the spanning apparatus may include at least one static mixer individually connected to the dispensing portion having the first and second supply cartridge portions and the first and second supply cartridge portions, respectively. At this time, the heat dissipating material flows out through the static mixer. The present invention relates to detecting the internal material of a dispensing device from a heat dissipating material that flows out through a static mixer.

Also, the first supply cartridge portion may be provided to supply the main resin and the thermally conductive filler to the static mixer, and the second supply cartridge portion may be provided to supply the hardener and the thermally conductive filler to the static mixer.

Further, the first and second supply cartridge portions may be configured as a gear pump type or a plunger type, respectively.

As described above, according to the method of determining a dispensing device for a heat dissipating material according to an embodiment of the present invention, the inner material of the dispensing device is detected from the heat dissipating material discharged from the dispensing device, You can decide.

1 is a schematic view showing a dispensing apparatus used in a method of determining a dispensing apparatus for a heat dissipating material according to an embodiment of the present invention.

2 is a schematic view showing another embodiment of the dispensing apparatus;

FIGS. 3 and 4 are schematic views showing embodiments in which a heat dissipation material is injected into a first external device. FIG.

5 is a schematic diagram of the static mixer shown in FIG.

6 is a schematic view of a module case constituting a battery module.

7 is a schematic view showing a battery module.

8 is a schematic view for explaining an injection hole of a module case.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method of determining a dispensing apparatus for a heat dissipating material according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In addition, the same or corresponding reference numerals are given to the same or corresponding reference numerals regardless of the reference numerals, and redundant description thereof will be omitted. For convenience of explanation, the size and shape of each constituent member shown in the drawings are exaggerated or reduced .

1 is a schematic view showing a dispensing apparatus 10 used in a method of determining a heat dissipating material dispensing apparatus according to an embodiment of the present invention, and Fig. 2 is a schematic view showing another embodiment of the dispensing apparatus 10 ' And FIGS. 3 and 4 are schematic views showing embodiments in which a heat dissipation material is injected into the first external device 200. FIG.

5 is a schematic diagram of the static mixer 100 shown in FIG.

The heat dissipating material dispensing apparatus (10, 10 ') according to the present invention is a device for injecting a heat dissipating material including a room temperature hardening filler into an external device.

Referring to FIG. 1, the heat dissipation material may be injected into the external devices 200 and 300 through the dispensing device 10. The dispensing apparatus 10 includes at least one static mixer 100 connected to the dispensing unit 20 and the dispensing unit 20. The external device may be a battery module.

In this document, a first external device refers to a first battery module and a second external device refers to a second battery module. The first and second battery modules have the same structure and are merely referred to as separate terms for the purpose of describing sequential process units.

In the dispensing apparatuses 10 and 10 ', mixing and injection of the heat-radiating material is performed through the static mixer 100. The heat dissipation material may be mixed in the static mixer 100, and the heat dissipation material may be injected into the single battery module through the plurality of static mixers 100.

FIG. 6 is a schematic view of a module case 210 constituting a battery module, FIG. 7 is a schematic view showing a battery module 200, and FIG. 8 is a schematic view for illustrating an injection hole 230 of a module case.

The battery module 200 includes a module case 210 and a plurality of battery cells 220 disposed in the module case 210. The battery cell 220 may be a pouch-type secondary battery. The battery cell 200 may typically include an electrode assembly, an electrolyte, and a pouch exterior. The heat dissipation material is injected into a space between the battery cells in the module case and functions to dissipate heat generated in the battery cells 220.

The module case 210 may have, for example, a rectangular parallelepiped shape, and may have a bottom surface 211, a side surface 212, and a top surface 213. At this time, one or more injection holes 230 may be formed in the upper surface 213. At this time, one static mixer 100 is connected to one injection hole 230 so that the heat dissipating material flowing out of the static mixer 100 can be injected into the battery module 200 through the injection hole 230.

Also, the step of injecting the heat dissipation material may be sequentially performed on the plurality of battery modules. For example, referring to FIG. 1, after the heat radiation material is completely injected into the first battery module 200, the heat radiation material may be injected into the second battery module 300. The first and second battery modules 200 and 300 are conveyed by a conveyance unit (for example, a belt conveyor), sequentially passed through the dispensing apparatus 100, and a heat dissipation material can be injected.

Referring to FIG. 3, the heat dissipation material may be injected into one battery module (for example, the first battery module 200) through one static mixer. Referring to FIG. 4, The heat dissipation material may be injected into one battery module (for example, the first battery module 200) through the static mixer 100. [

A dispensing device 100 for mixing and injecting heat dissipation materials in accordance with the present invention includes at least one static mixer 100 connected to a dispensing part 20 and a dispensing part 20. The static mixer 100 may be replaceable.

Also, a heat-radiating material mixed through a static mixer and injected into a battery module relates to a thermally conductive resin composition. The resin composition may include a resin component and a thermally conductive filler.

The dispensing portion 20 includes a first supply cartridge portion 21 and a second supply cartridge portion 22. At this time, the first supply cartridge portion 21 and the second supply cartridge portion 22 are individually connected to the static mixer 100. The first supply cartridge portion 21 supplies the main resin and the thermally conductive filler for forming the resin composition to the static mixer 100 and the second supply cartridge portion 22 supplies the hardener and thermally conductive filler to the static mixer 100. [ To the mixer (100).

Referring to FIG. 5, the static mixer 100 has an inlet 101 and an outlet 102. As described above, the inflow section 101 is provided separately from the first supply cartridge section 21 and the second supply cartridge section 22, and the outflow section 102 is connected to the module case 100 of the battery module 200 And is connected to the injection hole 230 provided in the injection tube 210.

The static mixer 100 includes a screw portion 120 for mixing and transporting. The screw part 120 is composed of a plurality of elements 121. One element 121 forms one end B and the number of the elements 121 can be referred to as a single number.

At this time, the number of the elements 121 of the static mixer 100 may be 5 to 25. If the number of the elements 121 is insufficient, the mixing efficiency lowers, which may affect the curing speed, the adhesive force, the insulating property, and the like, or cause a problem in reliability. Alternatively, if the number of the elements 121 is excessively large, the mixer having a small diameter and a long length is used to maintain the same mixer capacity.

In one embodiment, the static mixer 100 has a mixer inner diameter D of about 9 mm in which the screw portion 120 is disposed, a width of the screw portion 120 of 5 mm, a diameter A of the outflow portion 102, 3 mm, the mixer length L is 225 mm, and the number of stages is 24.

The first and second supply cartridge portions 21 and 22 may each include an application pump for supplying the main resin and the curing agent to the static mixer. The application pump is divided into a reciprocating pump and a rotary pump, in which a space is provided in a reciprocating part or a rotating part, and a fluid (for example, a main resin / a hardening agent) The first and second supply cartridge portions 21 and 22 may each include a reciprocating pump or a rotary pump.

The characteristic of the applied pump is that the discharge amount fluctuates during operation but the high pressure is generated and the efficiency is good. Further, even if the pressure is changed, the discharge amount does not change.

The reciprocating pump is a pump which sucks fluid by reciprocating in a cylinder by a piston or plunger, compresses the fluid at a required pressure, and discharges the fluid. There are various types of pumps. A single-acting plunger pump for sucking and discharging the plunger when the rod-like plunger reciprocates, and a double-action plunger pump for sucking and discharging the plunger for every single reciprocation. In addition, In order to reduce the variation of the discharge amount, there is a pump in which two or more single ends are connected in parallel.

In addition, the reciprocating pump has a small amount of water, but has a simple structure and is suitable for a high-pressure pump. However, since the fluctuation of the water pressure in the reciprocating motion is severe, there is a change in the discharge amount and the quantity control is difficult.

Further, the rotary pump is a pump that pumps liquid by the rotation of one to three rotors, and is simple in structure and easy to handle. The characteristics of the pump is that it is relatively easy to obtain a high pressure, and it is suitable for transporting a liquid having a high viscosity such as oil. There are many kinds according to the shape and structure of the rotor, but typical examples thereof include a vane pump, a gear pump, and a screw pump.

The present invention relates to a method of determining a heat dissipating material dispensing apparatus.

The method of determining a dispensing device includes determining the suitability of the dispensing device based on the amount of detection of the inner material and detecting the inner material of the dispensing device from the dissipating material exiting the dispensing device. The heat dissipating material flowing out of the dispensing device means a heat dissipating material flowing out of the static mixer.

Further, ICP analysis can be used as a method of detecting the internal material. For example, the instrument used may be ICP-OES (Optima 8300DV), and 0.2 g of the heat dissipation material from the static mill is treated with nitric acid / hydrogen peroxide, filtered using a 0.45 μm PTFE syringe and analyzed with ICP-OES .

 Based on the analysis result, in the step of determining conformity, the dispensing apparatus may be determined to be suitable when the internal material is detected to be less than a predetermined amount.

Further, the inner material may include iron (Fe).

Further, in the step of determining the suitability, if the iron is detected as 30 mg / kg or less, it can be determined that the dispensing apparatus is suitable.

Also, in the step of determining the suitability, preferably the dispensing device may be determined to be suitable if iron is detected to be less than 10 mg / kg.

Further, the heat-radiating material may include a urethane-based resin component and a thermally conductive filler.

Further, the heat dissipation material may include a filler having a Mohs hardness of 8 or more.

In addition, the heat dissipation material may have a filler having a Mohs hardness of 8 or more and 80 wt% or more of the total filler.

In addition, the heat dissipation material may have a filler weight of 70 wt% or more of the total paste weight.

division	Pump type	filler	Mohs hardness	wt%	Fe (mg / Kg)	compatibility
Example 1	Gear	Alumina	9	60	Less than 5	O
Example 2	Gear	AlN	8	60	Less than 5	O
Example 3	Gear	BN	2	80	Less than 5	O
Example 4	Ceramic spray gear	Alumina	9	80	Less than 5	O
Example 5	plunger	Alumina	9	80	Less than 5	O
Example 6	plunger	Alumina	9	90	Less than 5	O
Comparative Example 1	Gear	Alumina	9	80	135	X
Comparative Example 2	Gear	Alumina BN	92	819	97	X

Referring to Table 1, it is preferable that the heat dissipating material includes a filler having a Mohs hardness of 8 or more, and the heat dissipating material is preferably a filler having a Mohs hardness of 8 or more of 80 wt% or more of the entire filler. The part can be configured as a gear pump type or a plunger pump type.

On the other hand, the heat-radiating material relates to a thermally conductive resin composition. The resin composition may include a resin component and a thermally conductive filler.

In one example, the resin composition may be an adhesive composition, for example, a composition capable of forming an adhesive through a curing reaction or the like. The resin composition may be a solvent type resin composition, a water-based resin composition or a solvent-free resin composition. For example, a thermally conductive filler to be described later is added to a resin composition capable of forming a known acrylic adhesive, epoxy adhesive, urethane adhesive, olefin adhesive, EVA (ethylene vinyl acetate) adhesive or silicone adhesive, Can be prepared.

The term resin component is used to mean a component that is generally known as a resin, as well as a component that can be converted to a resin through a curing reaction or polymerization reaction.

In one example, as the resin component, a precursor capable of forming an adhesive resin or an adhesive resin can be applied. Examples of such a resin component include, but are not limited to, an acrylic resin, an epoxy resin, a urethane resin, an olefin resin, an ethylene vinyl acetate (EVA) resin or a silicone resin, or a precursor such as a polyol or an isocyanate compound.

The resin composition may include a thermally conductive filler together with the resin component. The term thermally conductive filler refers to a material having a thermal conductivity of at least about 1 W / mK, at least about 5 W / mK, at least about 10 W / mK, or at least about 15 W / mK. The thermal conductivity of the thermally conductive filler may be about 400 W / mK or less, about 350 W / mK or less, or about 300 W / mK or less. The kind of the thermally conductive filler is not particularly limited, but a ceramic filler can be applied in consideration of insulation and the like. For example, ceramic particles such as alumina, aluminum nitride (AlN), boron nitride (BN), silicon nitride, SiC or BeO may be used. If insulation properties can be secured, application of carbon filler such as graphite can be considered.

The resin composition may include about 600 parts by weight or more of the thermally conductive filler based on 100 parts by weight of the resin component. In another example, the proportion of the filler may be at least 650 parts by weight or at least 700 parts by weight based on 100 parts by weight of the resin component. The proportion may be up to about 2,000 parts by weight, up to about 1,500 parts by weight, or up to about 1,100 parts by weight, based on 100 parts by weight of the resin component. It is possible to secure desired physical properties such as thermal conductivity and insulating property within the ratio range of the filler.

If an excessive amount of filler is applied to secure thermal conductivity and insulating property as described above, the viscosity of the resin composition increases greatly and the handling property is accordingly deteriorated. Even after the resin material is formed, the resin composition contains bubbles or voids, It can fall.

Accordingly, a filler having at least three different diameters may be applied to the resin composition at a predetermined ratio.

The shape of the filler is not particularly limited and may be selected in consideration of viscosity and tin-firing of the resin composition, possibility of settling in the composition, desired thermal resistance or thermal conductivity, insulating property, filling effect or dispersibility. For example, it is advantageous to use a spherical filler in consideration of the amount to be filled. However, in consideration of formation of a network, conductivity, and tic baking, a non-spherical filler, for example, a filler such as a needle or a plate, Can be used.

The resin composition basically includes the above components, that is, the resin component and the thermally conductive filler, and may include other components if necessary. For example, the resin composition may contain a viscosity controlling agent such as a thixotropic agent, a diluent, a dispersing agent, a surface treatment agent, or a dispersing agent for controlling viscosity, for example, increasing or decreasing viscosity, A coupling agent, and the like.

The thixotropic agent can control the viscosity according to the shear force of the resin composition so that the manufacturing process of the battery module can be effectively performed. As thixotropic agents that can be used, fumed silica and the like can be exemplified.

The diluent or dispersant is usually used for lowering the viscosity of the resin composition and may be any of various kinds known in the art as long as it can exhibit the above-mentioned action.

The surface treatment agent is for surface treatment of the filler introduced into the resin composition, and any of various kinds of art known in the art can be used without limitation as long as it can exhibit the above-mentioned action.

The coupling agent can be used, for example, to improve the dispersibility of the thermally conductive filler such as alumina, and any of various kinds known in the art can be used without limitation as long as it can exhibit the above-mentioned action.

The resin composition may further include a flame retardant or a flame retardant auxiliary. Such a resin composition can form a flame retardant resin composition. As the flame retardant, various known flame retardants may be applied without particular limitation, and for example, solid phase filler-type flame retardants and liquid flame retardants can be applied. Examples of the flame retardant include organic flame retardants such as melamine cyanurate and the like, inorganic flame retardants such as magnesium hydroxide and the like, but are not limited thereto.

(TEP, triethyl phosphate, TCPP, tris (1,3-chloro-2-propyl) phosphate, etc.) may be used when the resin composition contains a large amount of filler. Further, a silane coupling agent capable of acting as a flame retardant may be added.

The foregoing description of the preferred embodiments of the present invention has been presented for purposes of illustration and various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention, And additions should be considered as falling within the scope of the following claims.

As described above, according to the method of determining a dispensing device for a heat dissipating material according to an embodiment of the present invention, the inner material of the dispensing device is detected from the heat dissipating material discharged from the dispensing device, You can decide.

Claims (12)

1. A method of determining a dispensing device for a heat dissipating material,

   Detecting an inner material of the dispensing device from the heat dissipating material flowing out of the dispensing device; And

   And determining the suitability of the dispensing device based on the amount of detection of the inner material.
2. The method according to claim 1,

   And determining that the dispensing apparatus is suitable if the internal material is detected to be less than a predetermined amount.
3. 3. The method of claim 2,

   Wherein the inner material comprises iron (Fe).
4. The method of claim 3,

   And determining that the dispensing apparatus is suitable if the iron is detected at 30 mg / kg or less.
5. 5. The method of claim 4,

   And determining that the dispensing apparatus is suitable if the iron is detected at 10 mg / kg or less.
6. The method according to claim 1,

   Wherein the heat dissipation material comprises a urethane-based resin component and a thermally conductive filler.
7. The method according to claim 6,

   Wherein the heat dissipation material includes a filler of a Mohs hardness of 8 or more.
8. 8. The method of claim 7,

   Wherein the heat dissipation material has a filler having a Mohs hardness of 8 or more of 80 wt% or more of the total filler.
9. 9. The method of claim 8,

   Wherein the heat dissipation material has a filler weight of 70 wt% or more of the total paste weight.
10. The method according to claim 1,

    The dispensing device includes a dispenser portion having first and second supply cartridge portions and at least one static mixer individually connected to the first and second supply cartridge portions,

    Wherein the heat dissipation material flows out through the static mixer.
11. 11. The method of claim 10,

    The first supply cartridge portion is provided to supply the main resin and the thermally conductive filler to the static mixer,

    And the second supply cartridge portion is provided to supply the hardener and the thermally conductive filler to the static mixer.
12. 11. The method of claim 10,

    Wherein the first and second supply cartridge portions are each of a gear pump type or a plunger type.

Images