KR102548423B1 - Cooling divice for battery - Google Patents

Abstract

The present invention relates to a condenser accommodating therein a liquid-phase working fluid phase-transferred by cooling, an evaporator having one side surfaced with a battery, and accommodating therein a gaseous-phase working fluid phase-transferred by heat, between the condenser and the evaporator. A flow pipe connecting the condenser and the evaporator and providing a passage for the phase-transferred gaseous working fluid and liquid working fluid to flow from the condenser to the evaporator or from the evaporator to the condenser, and a side end of the flow pipe connected to the condenser As provided in, the first porous media accommodated inside the condenser, the second porous media provided at the side end connected to the evaporator of the flow pipe and accommodated inside the evaporator, the condenser, and the condenser A Peltier element that selectively provides cooling or heat, and a control unit electrically connected to the Peltier element and selectively converting the polarity of power applied to the Peltier element based on the temperature of the battery, As the heat generated at the evaporator side quickly moves to the condenser side by circulation, the self-cooling efficiency of the battery can be improved, thereby providing a battery cooling device that extends the life of the battery and improves performance.

Description

Battery cooling device {Cooling device for battery}

The present invention relates to a cooling device for a vehicle and an ESS battery, and more particularly, to a condenser for accommodating a liquid working fluid therein, an evaporator facing a battery and accommodating a gaseous working fluid therein, and the condenser and evaporator It relates to a battery cooling device for cooling a battery by circulation of a phase-transferred working fluid, including a flow pipe connecting the condenser and the evaporator therebetween.

In accordance with the recent increase in interest in environmental protection, the development of another type of vehicle, that is, a hybrid vehicle or a fuel cell vehicle, which is environmentally friendly and considers fuel efficiency, is being actively developed in a vehicle using an existing combustion engine. .

A hybrid vehicle drives a vehicle with two power sources by linking a conventional engine and a motor driven by electric energy, and recently, mainly in the United States and Japan, due to the effect of reducing environmental pollution caused by exhaust gas and improving fuel efficiency. It is positioning itself as a realistic alternative next-generation automobile that is in the limelight.

In general, as a power source of a hybrid vehicle, an engine driven by gasoline or diesel and a motor are used as an auxiliary power source.

That is, during low-speed operation, the motor is used as a power source and travels, and at a certain speed or higher, the power source is switched to the engine and travels.

On the other hand, a battery is used as a power source required for driving the motor, and since such a battery acts as an important factor in the lifespan of a hybrid vehicle as well as an electric vehicle, in order to efficiently operate the battery, it must be thoroughly managed. .

In particular, ESS batteries (Energy Storage System Batteries) capable of charging and discharging are widely used as power sources for driving motors such as hybrid vehicles and electric vehicles, unlike primary batteries that cannot be charged.

In addition, the low-capacity battery can be used in portable and small electronic devices such as mobile phones, notebook computers, and camcorders.

However, when a conventional battery is used for a long time, heat is generated from the battery, especially in the case of a large-capacity battery, more heat is accompanied by an increase in the amount of current during charging or discharging, and when the generated heat is not sufficiently removed , the performance of the battery may deteriorate or even lead to ignition or explosion.

Therefore, in order to maintain and improve battery performance, battery cooling is essential, and in existing battery cooling devices, air cooling using a cooling fan is mainly used. has a structural problem that the battery is not uniformly cooled while flowing backwards, and there is a limit to its application to a large-capacity battery in that it uses air with low thermal conductivity.

As for the prior art, reference may be made to Patent Registration No. 10-1818922 (2018.01.10).

The present invention includes a condenser for accommodating a liquid working fluid therein, an evaporator for accommodating a gaseous working fluid therein, and a fluid pipe connecting the condenser and the evaporator between the condenser and the evaporator, As the heat generated at the evaporator side quickly moves to the condenser side due to the circulation of the phase-transferred working fluid, the self-cooling efficiency of the battery can be improved, thereby providing a battery cooling device that extends the life of the battery and improves performance. do.

A battery cooling device according to the present invention includes a condenser for accommodating therein a liquid-phase working fluid phase-transferred by cooling, an evaporator having one side surfaced with a battery, and accommodating therein a gaseous-phase working fluid phase-transferred by heat, and the condenser A flow pipe connecting the condenser and the evaporator between the and the evaporator and providing a passage for the phase-transferred gaseous working fluid and liquid working fluid to flow from the condenser to the evaporator or from the evaporator to the condenser, A first porous media provided at a side end connected to the condenser and accommodated inside the condenser, a second porous media provided at a side end connected to the evaporator of the flow pipe and accommodated inside the evaporator, and an interview with the condenser. and a Peltier element that selectively provides cooling or heat to the condenser, and a control unit electrically connected to the Peltier element and selectively converting the polarity of power applied to the Peltier element based on the temperature of the battery. .

At this time, it is preferable that the first porous media and the second porous media according to the present invention form a cylindrical shape, and the diameter of the first porous media is smaller than that of the second porous media.

In addition, the first porous media and the second porous media according to the present invention may be formed in a hollow cylindrical shape.

In addition, the first porous media and the second porous media according to the present invention may form an insertion end inserted into the end of the flow pipe and a hexahedral block portion formed on one side of the insertion end.

Here, the block portion according to the present invention preferably has a larger width than the width of the insertion end portion.

In addition, the flow pipe according to the present invention may be provided in plurality.

In addition, a through hole through which a liquid working fluid and a gaseous working fluid pass may be formed in each of the first porous media and the second porous media according to the present invention.

In addition, a plurality of protruding pieces may be formed on the surface of each of the first porous media and the second porous media according to the present invention.

In addition, while being disposed in parallel with the flow pipe according to the present invention, a pressure control pipe for connecting the condenser and the evaporator to adjust the pressure between the condenser and the evaporator is included.

At this time, the pressure control pipe according to the present invention is preferably formed with a diameter smaller than 1/10 of the diameter of the flow pipe.

In addition, the battery cooling device according to the present invention changes the polarity of the power applied to the Peltier element, and the condenser unit functions as an evaporator, and the evaporator may function as a condenser.

The battery cooling device according to the present invention has the following effects.

A condenser accommodating a liquid working fluid therein, an evaporator interviewing a battery and accommodating a gaseous working fluid therein, and a flow pipe connecting the condenser and the evaporator between the condenser and the evaporator, As the heat generated at the evaporator side quickly moves to the condenser side due to the circulation of the working fluid, the self-cooling efficiency of the battery can be improved, thereby extending the life of the battery and improving its performance.

In addition, as the condenser is provided with a Peltier element, and the Peltier element selectively provides cooling or heat to the condenser according to the temperature of the battery, the condenser unit functions as an evaporator, and the evaporator functions as a condenser, so that the cooling capacity of the condenser may be selectively increased, and heat may be provided to the battery in a low-temperature environment such as winter, so that the battery may exhibit original performance even in a low-temperature environment.

1 is an exemplary view showing a battery cooling device according to an embodiment of the present invention.
2 is an exemplary view showing a battery cooling device according to a first embodiment of the present invention.
3 is an exemplary view showing a battery cooling device according to a second embodiment of the present invention.
4 is an exemplary view showing a battery cooling device according to a third embodiment of the present invention.
5 is an exemplary view showing a battery cooling device according to a fourth embodiment of the present invention.
6 is an exemplary view showing a state in which a plurality of flow pipes are provided in a battery cooling device according to an embodiment of the present invention.
7 is an exemplary view showing a state in which porous media are individually provided to a plurality of flow pipes according to an embodiment of the present invention.
8 is an exemplary view showing a state in which block-shaped porous media are provided in a plurality of flow pipes according to an embodiment of the present invention.
9 is an exemplary view showing a state in which through holes are formed in porous media according to a fourth embodiment of the present invention.
10 is an exemplary view showing a state in which protruding pieces are formed in porous media according to a fourth embodiment of the present invention.
11 is an exemplary view showing a state in which the condenser unit functions as an evaporator and the evaporator functions as a condenser according to a polarity change of power applied to a Peltier device according to an embodiment of the present invention.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. Prior to this, the terms or words used in this specification and claims should not be construed as being limited to the usual or dictionary meaning, and the inventor appropriately uses the concept of the term in order to explain his/her invention in the best way. Based on the principle that it can be defined, it should be interpreted as meaning and concept consistent with the technical spirit of the present invention.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention, and do not represent all of the technical ideas of the present invention, so at the time of the present application, they are equivalent alternatives that can be replaced. It should be understood that variations may exist.

The present invention uses the principle of a heat pipe, a condenser for accommodating a liquid-phase working fluid therein, an evaporator for accommodating a gaseous-phase working fluid therein, and a condenser and an evaporator between the condenser and the evaporator. It relates to a battery cooling device for cooling a battery by circulating a phase-transformed working fluid, including a flow pipe connecting the , with reference to the drawings.

The battery cooling device according to the first embodiment of the present invention with reference to FIGS. 1 and 2 includes a condenser 100, an evaporator 200, a flow pipe 300, a first porous media 310, and a second porous media ( 320). First, the condenser 100 accommodates the liquid-phase working fluid phase-transformed by cooling. It is preferable to consist of a chamber having a space.

In addition, the evaporator 200 faces the battery and receives the working fluid phase-transformed by the heat of the battery, and the evaporator 200 also has a rectangular parallelepiped shape like the condenser 100, and the inside It is preferable to form a chamber having a space in the.

At this time, in the first embodiment of the present invention, the overall shape of the condenser 100 and the evaporator 200 is limited to a rectangular parallelepiped shape, but is not limited thereto, and may be formed in various shapes depending on the design conditions of the battery cooling device. there is.

Here, the condenser 100 is provided with a Peltier element 500. The Peltier element 500 is a thermoelectric semiconductor that generates heat on one surface of the element when power is applied from the outside, and on the other surface. By generating cold, it is possible to selectively adjust the surface that generates heat and cold by changing the polarity of the power supply.

At this time, the Peltier element 500 is electrically connected to the controller 600, and the controller 600 selectively converts the polarity of power applied to the Peltier element 500 based on the temperature of the battery.

Therefore, the Peltier element 500 interfaces with the condenser 100 and selectively provides cold or heat to the condenser 100 under the control of the controller 600 .

At this time, the cold provided to the condenser 100 by the Peltier element 500 cools the gaseous working fluid introduced into the condenser 100 to cause a phase transition to a liquid working fluid, and the Peltier element 500 The heat supplied to the condenser 100 heats the liquid-phase working fluid received in the condenser 100 to cause a phase transition to a gas-phase working fluid.

Therefore, the Peltier element 500 can increase the cooling capacity of the condenser 100 by selectively supplying cold water to the condenser 100 when more cooling capacity is needed in the condenser 100 .

Looking at the embodiment of the Peltier element 500 and the controller 600, when the performance of the battery is degraded due to low temperature, such as in winter, when the vehicle is initially started, the Peltier element 500 heats the condenser 100. By providing, the phase of the liquid working fluid accommodated in the condenser 100 is converted into a gas phase working fluid by heating, and the phase transitioned working fluid is introduced into the evaporator 200 and interviewed with the evaporator 200. The battery is heated by the gaseous working fluid flowing into the evaporator 200 and exhibits original battery performance.

At this time, the gaseous working fluid introduced into the evaporator 200 is phase-transformed into a liquid-phase working fluid while providing heat to the battery, and the phase-transferred liquid-phase working fluid forms a circulation route flowing into the condenser 100 again for some time. When the battery generates heat due to the driving of the vehicle, while the driving of the Peltier element 500 is stopped, the liquid working fluid accommodated in the evaporator 200 is phase-transferred back to the gaseous working fluid by the heat of the battery and the condenser It flows into (100).

And the condenser 100 and the evaporator 200 are connected to each other by a flow pipe 300, the flow pipe 300 is between the condenser 100 and the evaporator 200, the condenser 100 and the evaporator ( 200) is connected, and the heat of the evaporator 200 is conducted to the condenser 100 due to the phase transition of the working fluid accommodated therein.

At this time, the flow pipe 300 is provided by interviewing the mesh layer 302 along the inner circumferential surface of the metal tube 301 having a hollow like a conventional heat pipe, and the liquid working fluid is the mesh layer 302 It flows from one side to the other side or from the other side to one side, and the gaseous working fluid flows from the other side to one side or from one side to the other side along the hollow of the metal pipe body 301.

Therefore, when the evaporator 200 in contact with the battery receives the heat of the battery, the liquid working fluid accommodated inside the flow pipe 300 connected to the evaporator 200 undergoes a phase transition by the heat to form a gaseous working fluid. , and the changed gaseous working fluid flows from the evaporator 200 to the condenser 100 along the hollow of the metal tube 301 of the flow pipe 300, and the operation of the liquid phase accommodated in the condenser 100 As the fluid is cooled, it is condensed, and the working fluid phase-transformed from the gas phase to the liquid phase flows from the condenser 100 to the evaporator 200 along the mesh layer 302 of the flow pipe 300 again.

Therefore, the cooling of the battery is achieved by the circulation of the working fluid that undergoes phase transition by heat or cooling.

Here, a first porous media 310 and a second porous media 320 are provided at both ends of the flow pipe 300 connected to the condenser 100 and the evaporator 200 according to the first embodiment of the present invention, The first porous media 310 is provided at a side end of the flow pipe 300 connected to the condenser 100 and accommodated inside the condenser 100, and the second porous media 320 is provided in the flow pipe 300. While being provided at the side end connected to the side of the evaporator 200 of 300, it is accommodated inside the evaporator 200.

At this time, each of the first porous media 310 and the second porous media 320 is cylindrical, and the material is preferably made of a metal material such as copper or aluminum having high thermal conductivity to form a porous structure, and the first porous media ( 310) is preferably formed to have a relatively smaller diameter than the second porous media 320.

Therefore, the battery cooling device according to the first embodiment of the present invention has a first porous media 310 and a second porous media 320 in a cylindrical shape at both ends of the flow pipe 300, and the first porous media 310 and the second porous media 320 are located inside the condenser 100 and the evaporator 200, respectively, so that the liquid phase working fluid and the gas phase working fluid accommodated in the condenser 100 and the evaporator 200, respectively, While permeating into the first porous media 310 and the second porous media 320, respectively, it flows into the flow pipe 300 and flows along the flow pipe 300.

In addition, while being disposed in parallel with the flow pipe 300, a pressure control pipe 400 for connecting the condenser 100 and the evaporator 200 to adjust the pressure between the condenser 100 and the evaporator 200 is included. do.

At this time, the pressure control pipe 400 is preferably formed with a diameter smaller than 1/10 of the diameter of the flow pipe 300.

Here, the first porous media 310 and the second porous media 320 according to the present invention may be provided in various forms, and in the second embodiment of the present invention, the first porous media 310 and the second porous media 310 The porous media 320 may be provided as a tubular body having a hollow therein.

Referring to the second embodiment of the present invention with reference to FIG. 3, the battery cooling device according to the second embodiment of the present invention includes a condenser 100, an evaporator 200, a flow pipe 300, and a first porous media 310. , and a second porous media 320. First, the condenser 100 accommodates the liquid phase working fluid phase-transferred by cooling. The overall shape of the condenser 100 is a rectangular parallelepiped, In order to accommodate, it is preferably made of a chamber having a space inside.

In addition, the evaporator 200 faces the battery and receives the working fluid phase-transformed by the heat of the battery, and the evaporator 200 also has a rectangular parallelepiped shape like the condenser 100, and the inside It is preferable to form a chamber having a space in the.

At this time, in the second embodiment of the present invention, the overall shape of the condenser 100 and the evaporator 200 is limited to a rectangular parallelepiped shape, but it is not limited thereto, and may be formed in various shapes depending on the design conditions of the battery cooling device. there is.

Here, the condenser 100 is provided with a Peltier element 500. The Peltier element 500 is a thermoelectric semiconductor that generates heat on one surface of the element when power is applied from the outside, and on the other surface. By generating cold, it is possible to selectively adjust the surface that generates heat and cold by changing the polarity of the power supply.

At this time, the Peltier element 500 is electrically connected to the controller 600, and the controller 600 selectively converts the polarity of power applied to the Peltier element 500 based on the temperature of the battery.

Therefore, the Peltier element 500 interfaces with the condenser 100 and selectively provides cold or heat to the condenser 100 under the control of the controller 600 .

At this time, the cold provided to the condenser 100 by the Peltier element 500 cools the gaseous working fluid introduced into the condenser 100 to cause a phase transition to a liquid working fluid, and the Peltier element 500 The heat supplied to the condenser 100 heats the liquid-phase working fluid received in the condenser 100 to cause a phase transition to a gas-phase working fluid.

Therefore, the Peltier element 500 can increase the cooling capacity of the condenser 100 by selectively supplying cold water to the condenser 100 when more cooling capacity is needed in the condenser 100 .

Looking at the embodiment of the Peltier element 500 and the controller 600, when the performance of the battery is degraded due to low temperature, such as in winter, when the vehicle is initially started, the Peltier element 500 heats the condenser 100. By providing, the phase of the liquid working fluid accommodated in the condenser 100 is converted into a gas phase working fluid by heating, and the phase transitioned working fluid is introduced into the evaporator 200 and interviewed with the evaporator 200. The battery is heated by the gaseous working fluid flowing into the evaporator 200 and exhibits original battery performance.

At this time, the gaseous working fluid introduced into the evaporator 200 is phase-transformed into a liquid-phase working fluid while providing heat to the battery, and the phase-transferred liquid-phase working fluid forms a circulation route flowing into the condenser 100 again for some time. When the battery generates heat due to the driving of the vehicle, while the driving of the Peltier element 500 is stopped, the liquid working fluid accommodated in the evaporator 200 is phase-transferred back to the gaseous working fluid by the heat of the battery and the condenser It flows into (100).

And the condenser 100 and the evaporator 200 are connected to each other by a flow pipe 300, the flow pipe 300 is between the condenser 100 and the evaporator 200, the condenser 100 and the evaporator ( 200) is connected, and the heat of the evaporator 200 is conducted to the condenser 100 due to the phase transition of the working fluid accommodated therein.

At this time, the flow pipe 300 is provided by interviewing the mesh layer 302 along the inner circumferential surface of the metal tube 301 having a hollow like a conventional heat pipe, and the liquid working fluid is the mesh layer 302 It flows from one side to the other side or from the other side to one side, and the gaseous working fluid flows from the other side to one side or from one side to the other side along the hollow of the metal pipe body 301.

Therefore, when the evaporator 200 in contact with the battery receives the heat of the battery, the liquid working fluid accommodated inside the flow pipe 300 connected to the evaporator 200 undergoes a phase transition by the heat to form a gaseous working fluid. , and the changed gaseous working fluid flows from the evaporator 200 to the condenser 100 along the hollow of the metal tube 301 of the flow pipe 300, and the operation of the liquid phase accommodated in the condenser 100 As the fluid is cooled, it is condensed, and the working fluid phase-transformed from the gas phase to the liquid phase flows from the condenser 100 to the evaporator 200 along the mesh layer 302 of the flow pipe 300 again.

Therefore, the cooling of the battery is achieved by the circulation of the working fluid that undergoes phase transition by heat or cooling.

Here, at both ends of the flow pipe 300 connected to the condenser 100 and the evaporator 200 according to the second embodiment of the present invention, the first porous media 310 and the second porous media 320), wherein the first porous media 310 is provided at a side end connected to the condenser 100 of the flow pipe 300 and accommodated inside the condenser 100, and the second porous media ( 320) is provided at a side end connected to the evaporator 200 side of the flow pipe 300 and is accommodated inside the evaporator 200.

At this time, each of the first porous media 310 and the second porous media 320 is a tubular body having a hollow inside, preferably one side is an open surface and the opposite side is a closed surface, and the material has a thermal conductivity It is preferable to form a porous structure with a high metal material such as copper or aluminum, and the first porous media 310 is preferably formed to have a relatively smaller diameter than the second porous media 320 .

Therefore, the vehicle and ESS battery cooling device according to the second embodiment of the present invention has a first porous media 310 and a second porous media 320 formed in a hollow cylindrical shape at both ends of the flow pipe 300, , The first porous media 310 and the second porous media 320 are located inside the condenser 100 and the evaporator 200, respectively, and the liquid working fluid accommodated in the condenser 100 and the evaporator 200, respectively And gaseous working fluid flows into the flow pipe 300 while permeating into the first porous media 310 and the second porous media 320, respectively, and flows along the flow pipe 300.

In addition, while being disposed in parallel with the flow pipe 300, a pressure control pipe 400 for connecting the condenser 100 and the evaporator 200 to adjust the pressure between the condenser 100 and the evaporator 200 is included. do.

At this time, the pressure control pipe 400 is preferably formed with a diameter smaller than 1/10 of the diameter of the flow pipe 300.

And in the third embodiment of the present invention, insertion ends 311 and 321 having a diameter corresponding to the inner diameter of the flow pipe so as to be inserted into the side end of the flow pipe at one side of each of the first porous media and the second porous media can form

Looking at the third embodiment of the present invention with reference to FIG. 4, the vehicle and ESS battery cooling device according to the third embodiment of the present invention includes a condenser 100, an evaporator 200, a flow pipe 300, and a first porous media 310, and a second porous media 320. First, the condenser 100 accommodates the liquid-phase working fluid phase-transformed by cooling. The condenser 100 has a rectangular parallelepiped shape as a whole, In order to accommodate the working fluid of, it is preferably made of a chamber having a space inside.

In addition, the evaporator 200 interviews the vehicle and the ESS battery, and accommodates the working fluid of the phase transitioned by the heat of the vehicle and the ESS battery, and the evaporator 200 also has an overall shape like the condenser 100 It is preferable to form this rectangular parallelepiped and form a chamber having a space inside.

At this time, in the third embodiment of the present invention, the overall shape of the condenser 100 and the evaporator 200 is limited to a rectangular parallelepiped shape, but is not limited thereto, and various shapes depending on the design conditions of the vehicle and ESS battery cooling device can form

Here, the condenser 100 is provided with a Peltier element 500. The Peltier element 500 is a thermoelectric semiconductor that generates heat on one surface of the element when power is applied from the outside, and on the other surface. By generating cold, it is possible to selectively adjust the surface that generates heat and cold by changing the polarity of the power supply.

At this time, the Peltier element 500 is electrically connected to the controller 600, and the controller 600 selectively converts the polarity of power applied to the Peltier element 500 based on the temperature of the battery.

Therefore, the Peltier element 500 interfaces with the condenser 100 and selectively provides cold or heat to the condenser 100 under the control of the controller 600 .

At this time, the cold provided to the condenser 100 by the Peltier element 500 cools the gaseous working fluid introduced into the condenser 100 to cause a phase transition to a liquid working fluid, and the Peltier element 500 The heat supplied to the condenser 100 heats the liquid-phase working fluid received in the condenser 100 to cause a phase transition to a gas-phase working fluid.

Therefore, the Peltier element 500 can increase the cooling capacity of the condenser 100 by selectively supplying cold water to the condenser 100 when more cooling capacity is needed in the condenser 100 .

Looking at the embodiment of the Peltier element 500 and the controller 600, when the performance of the battery is degraded due to low temperature, such as in winter, when the vehicle is initially started, the Peltier element 500 heats the condenser 100. By providing, the phase of the liquid working fluid accommodated in the condenser 100 is converted into a gas phase working fluid by heating, and the phase transitioned working fluid is introduced into the evaporator 200 and interviewed with the evaporator 200. The battery is heated by the gaseous working fluid flowing into the evaporator 200 and exhibits original battery performance.

At this time, the gaseous working fluid introduced into the evaporator 200 is phase-transformed into a liquid-phase working fluid while providing heat to the battery, and the phase-transferred liquid-phase working fluid forms a circulation route flowing into the condenser 100 again for some time. When the battery generates heat due to the driving of the vehicle, while the driving of the Peltier element 500 is stopped, the liquid working fluid accommodated in the evaporator 200 is phase-transferred back to the gaseous working fluid by the heat of the battery and the condenser It flows into (100).

And the condenser 100 and the evaporator 200 are connected to each other by a flow pipe 300, the flow pipe 300 is between the condenser 100 and the evaporator 200, the condenser 100 and the evaporator ( 200) is connected, and the heat of the evaporator 200 is conducted to the condenser 100 due to the phase transition of the working fluid accommodated therein.

At this time, the flow pipe 300 is provided by interviewing the mesh layer 302 along the inner circumferential surface of the metal tube 301 having a hollow like a conventional heat pipe, and the liquid working fluid is the mesh layer 302 It flows from one side to the other side or from the other side to one side, and the gaseous working fluid flows from the other side to one side or from one side to the other side along the hollow of the metal pipe body 301.

Therefore, when the evaporator 200 interviewing the vehicle and the ESS battery receives heat from the vehicle and the ESS battery, the liquid working fluid contained in the fluid pipe 300 connected to the evaporator 200 is It is phase-transferred and changed into a gaseous working fluid, and the changed gaseous working fluid flows from the evaporator 200 to the condenser 100 along the hollow of the metal tube 301 of the flow pipe 300, and the condenser 100 ) The liquid-phase working fluid accommodated in is condensed as it is cooled, and the phase-transitioned working fluid from the gas phase to the liquid phase flows from the condenser 100 to the evaporator 200 along the mesh layer 302 of the flow pipe 300 again. to become fluid

Therefore, cooling of the vehicle and the ESS battery is performed by the circulation of the working fluid phase-transitioned into heat or cooling.

Here, the inner diameter of the flow pipe 300 is inserted into the side ends of the flow pipe 300 at both ends of the flow pipe 300 connected to the condenser 100 and the evaporator 200 according to the third embodiment of the present invention. It is provided with a first porous media 310 and a second porous media 320 having insertion ends 311 and 321 having diameters corresponding to , wherein the first porous media 310 is the flow pipe 300 It is provided on the side end connected to the condenser 100 and accommodated inside the condenser 100, and the second porous media 320 is provided on the side end connected to the evaporator 200 side of the flow pipe 300 As it is, it is accommodated inside the evaporator 200.

At this time, each of the first porous media 310 and the second porous media 320 has insertion ends 311 and 321 having a diameter corresponding to the inner diameter of the flow pipe 300 so as to be inserted into the side end of the flow pipe 300. ) is integrally formed, and it is preferable to form a porous structure with a metal material such as copper or aluminum having high thermal conductivity, and the first porous media 310 has a relatively smaller diameter than the second porous media 320. It is preferable to form to have.

Therefore, the vehicle and ESS battery cooling device according to the third embodiment of the present invention has a diameter corresponding to the inner diameter of the flow pipe 300 so as to be inserted into the side end of the flow pipe 300 at both ends of the flow pipe 300 While having the first porous media 310 and the second porous media 320 integrally formed with the insertion ends 311 and 321, the first porous media 310 and the second porous media 320 are respectively It is located inside the condenser 100 and the evaporator 200, and the liquid phase working fluid and the gas phase working fluid accommodated in the condenser 100 and the evaporator 200, respectively, pass through the first porous media 310 and the insertion end 311 And while permeating into the second porous media 320 and the insertion end 321, respectively, it flows into the flow pipe 300 and flows along the flow pipe 300.

In addition, while being disposed in parallel with the flow pipe 300, a pressure control pipe 400 for connecting the condenser 100 and the evaporator 200 to adjust the pressure between the condenser 100 and the evaporator 200 is included. do.

At this time, the pressure control pipe 400 is preferably formed with a diameter smaller than 1/10 of the diameter of the flow pipe 300.

In the fourth embodiment of the present invention, the first porous media 310 and the second porous media 320 may be formed as hexahedral blocks.

Looking at the fourth embodiment of the present invention with reference to FIG. 5, the vehicle and ESS battery cooling device according to the fourth embodiment of the present invention includes a condenser 100, an evaporator 200, a flow pipe 300, and a first porous media 310, and a second porous media 320. First, the condenser 100 accommodates the liquid-phase working fluid phase-transformed by cooling. The condenser 100 has a rectangular parallelepiped shape as a whole, In order to accommodate the working fluid of, it is preferably made of a chamber having a space inside.

In addition, the evaporator 200 interviews the vehicle and the ESS battery, and accommodates the working fluid of the phase transitioned by the heat of the vehicle and the ESS battery, and the evaporator 200 also has an overall shape like the condenser 100 It is preferable to form this rectangular parallelepiped and form a chamber having a space inside.

At this time, in the fourth embodiment of the present invention, the overall shape of the condenser 100 and the evaporator 200 is limited to a rectangular parallelepiped shape, but is not limited thereto, and various shapes depending on the design conditions of the vehicle and ESS battery cooling device can form

Here, the condenser 100 is provided with a Peltier element 500. The Peltier element 500 is a thermoelectric semiconductor that generates heat on one surface of the element when power is applied from the outside, and on the other surface. By generating cold, it is possible to selectively adjust the surface that generates heat and cold by changing the polarity of the power supply.

At this time, the Peltier element 500 is electrically connected to the controller 600, and the controller 600 selectively converts the polarity of power applied to the Peltier element 500 based on the temperature of the battery.

Therefore, the Peltier element 500 interfaces with the condenser 100 and selectively provides cold or heat to the condenser 100 under the control of the controller 600 .

At this time, the cold provided to the condenser 100 by the Peltier element 500 cools the gaseous working fluid introduced into the condenser 100 to cause a phase transition to a liquid working fluid, and the Peltier element 500 The heat supplied to the condenser 100 heats the liquid-phase working fluid received in the condenser 100 to cause a phase transition to a gas-phase working fluid.

Therefore, the Peltier element 500 can increase the cooling capacity of the condenser 100 by selectively supplying cold water to the condenser 100 when more cooling capacity is needed in the condenser 100 .

Looking at the embodiment of the Peltier element 500 and the controller 600, when the performance of the battery is degraded due to low temperature, such as in winter, when the vehicle is initially started, the Peltier element 500 heats the condenser 100. By providing, the phase of the liquid working fluid accommodated in the condenser 100 is converted into a gas phase working fluid by heating, and the phase transitioned working fluid is introduced into the evaporator 200 and interviewed with the evaporator 200. The battery is heated by the gaseous working fluid flowing into the evaporator 200 and exhibits original battery performance.

At this time, the gaseous working fluid introduced into the evaporator 200 is phase-transformed into a liquid-phase working fluid while providing heat to the battery, and the phase-transferred liquid-phase working fluid forms a circulation route flowing into the condenser 100 again for some time. When the battery generates heat due to the driving of the vehicle, while the driving of the Peltier element 500 is stopped, the liquid working fluid accommodated in the evaporator 200 is phase-transferred back to the gaseous working fluid by the heat of the battery and the condenser It flows into (100).

And the condenser 100 and the evaporator 200 are connected to each other by a flow pipe 300, the flow pipe 300 is between the condenser 100 and the evaporator 200, the condenser 100 and the evaporator ( 200) is connected, and the heat of the evaporator 200 is conducted to the condenser 100 due to the phase transition of the working fluid accommodated therein.

At this time, the flow pipe 300 is provided by interviewing the mesh layer 302 along the inner circumferential surface of the metal tube 301 having a hollow like a conventional heat pipe, and the liquid working fluid is the mesh layer 302 It flows from one side to the other side or from the other side to one side, and the gaseous working fluid flows from the other side to one side or from one side to the other side along the hollow of the metal pipe body 301.

Therefore, when the evaporator 200 interviewing the vehicle and the ESS battery receives heat from the vehicle and the ESS battery, the liquid working fluid contained in the fluid pipe 300 connected to the evaporator 200 is It is phase-transferred and changed into a gaseous working fluid, and the changed gaseous working fluid flows from the evaporator 200 to the condenser 100 along the hollow of the metal tube 301 of the flow pipe 300, and the condenser 100 ) The liquid-phase working fluid accommodated in is condensed as it is cooled, and the phase-transitioned working fluid from the gas phase to the liquid phase flows from the condenser 100 to the evaporator 200 along the mesh layer 302 of the flow pipe 300 again. to become fluid

Therefore, cooling of the vehicle and the ESS battery is performed by the circulation of the working fluid phase-transitioned into heat or cooling.

Here, at both ends of the flow pipe 300 connected to the condenser 100 and the evaporator 200 according to the fourth embodiment of the present invention, the first porous media 310 and the second porous media 320 formed of hexahedral blocks are formed. ), wherein the first porous media 310 is provided at a side end connected to the condenser 100 of the flow pipe 300 and accommodated inside the condenser 100, and the second porous media 320 ) is provided at a side end connected to the evaporator 200 side of the flow pipe 300 and accommodated inside the evaporator 200.

At this time, each of the first porous media 310 and the second porous media 320 is formed as a hexahedral block, and has a diameter corresponding to the inner diameter of the flow pipe 300 so as to be inserted into the side end of the flow pipe 300. It is preferable to integrally form the insertion ends 311 and 321 having a porous structure with a metal material such as copper or aluminum having high thermal conductivity, and the first porous media 310 is the second porous media ( 320) is preferably formed to have a relatively smaller diameter.

Therefore, the vehicle and ESS battery cooling device according to the fourth embodiment of the present invention has a first porous media 310 and a second porous media 320 formed of hexahedral blocks at both ends of the flow pipe 300, The first porous media 310 and the second porous media 320 are located inside the condenser 100 and the evaporator 200, respectively, and the liquid phase working fluid accommodated in the condenser 100 and the evaporator 200, respectively, and The gas phase working fluid permeates into the first porous media 310 and the insertion end 311 and the second porous media 320 and the insertion end 321, respectively, and flows into the flow pipe, thereby forming the flow pipe 300. will flow according to

In addition, while being disposed in parallel with the flow pipe 300, a pressure control pipe 400 for connecting the condenser 100 and the evaporator 200 to adjust the pressure between the condenser 100 and the evaporator 200 is included. do.

At this time, the pressure control pipe 400 is preferably formed with a diameter smaller than 1/10 of the diameter of the flow pipe 300.

Here, the vehicle and ESS battery cooling apparatus according to the present invention with reference to FIGS. 6 to 8 may include a plurality of the flow pipes 300, wherein the first porous media 310 forming a cylindrical shape and the first 2 Porous media 320 are provided at both ends of each of the flow pipes 300, so that the flow pipes 300 can individually induce the inflow of the working fluid, and the first one constituting a hexahedral block. The porous media 310 and the second porous media 320 each form a plurality of insertion ends corresponding to both ends of the flow pipe 300 to connect the condenser 100 and the evaporator 200 in parallel. can

And, each of the first porous media 310 and the second porous media 320 constituting the hexahedral block according to the fourth embodiment of the present invention with reference to FIG. A plurality of through holes 312 and 322 may be respectively formed.

At this time, the liquid working fluid and gaseous phase accommodated in the condenser 100 and the evaporator 200 through the plurality of through holes 312 and 322 formed in the first porous media 310 and the second porous media 320, respectively. As the working fluid passes through the first porous media 310 and the second porous media 320, respectively, the area in which the working fluid contacts the first porous media 310 and the second porous media 320 increases. As the width increases, the cooling efficiency can be increased by increasing the cooling capacity.

In addition, a plurality of protruding pieces 313 and 323 may be formed on the surfaces of the first porous media and the second porous media constituting the hexahedral block according to the fourth embodiment of the present invention with reference to FIG. 10 .

At this time, the liquid working fluid and gaseous phase accommodated in the condenser 100 and the evaporator 200 through the plurality of protrusions 313 and 323 formed on the first porous media 310 and the second porous media 320, respectively. As the contact area of the working fluid with the first porous media 310 and the second porous media 320 increases, cooling efficiency can be increased by increasing the cooling capacity.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

100: condenser
200: evaporator
300: floating pipe
301: metal pipe body
302: mesh layer
310: first porous media
311, 321: insertion end
320: second porous media
400: pressure control pipe
500: Peltier element
600: control unit

Claims (11)

A condenser for accommodating therein the liquid-phase working fluid phase-transformed by cooling;
An evaporator having one side facing the battery and accommodating therein a gaseous working fluid phase-transformed by heat;
a flow pipe connecting the condenser and the evaporator between the condenser and the evaporator and providing a passage through which the phase-transferred gaseous working fluid and the liquid working fluid flow from the condenser to the evaporator or from the evaporator to the condenser;
a first porous medium provided at a side end of the flow pipe connected to the condenser and accommodated in the condenser;
a second porous medium provided at a side end of the flow pipe connected to the evaporator and accommodated in the evaporator;
a Peltier element that interviews the condenser and selectively provides cold or heat to the condenser;
a controller electrically connected to the Peltier element and selectively converting the polarity of power applied to the Peltier element based on the temperature of the battery; and
A battery cooling device comprising a plurality of protruding pieces formed on surfaces of each of the first porous media and the second porous media.
The method of claim 1,
The first porous media and the second porous media form a cylindrical shape,
Battery cooling device, characterized in that the diameter of the first porous media is smaller than the diameter of the second porous media.
The method of claim 2,
The first porous media and the second porous media
Battery cooling device, characterized in that the hollow cylindrical shape.
The method of claim 2,
The first porous media and the second porous media
An insertion end inserted into the end of the flow pipe;
A battery cooling device comprising a block portion of a hexahedron formed on one side of the insertion end.
The method of claim 4,
The battery cooling device of claim 1, wherein the block portion has a width greater than that of the insertion end portion.
According to claim 4 or claim 5,
The battery cooling device having a plurality of the flow pipe.
The method of claim 5,
A battery cooling device having a through hole through which a liquid working fluid and a gaseous working fluid pass through each of the first porous media and the second porous media.
delete The method of claim 1,
A battery cooling device including a pressure control pipe disposed in parallel with the flow pipe and connecting the condenser and the evaporator to adjust the pressure between the condenser and the evaporator.
The method of claim 9,
The pressure regulator is
Battery cooling device, characterized in that formed with a diameter smaller than 1/10 of the diameter of the flow pipe.
The method of claim 1,
A battery cooling device in which the condenser functions as an evaporator and the evaporator functions as a condenser by changing the polarity of power applied to the Peltier element.

Images