WO2020101177A1

WO2020101177A1 - Cooling pad and electric vehicle using same

Info

Publication number: WO2020101177A1
Application number: PCT/KR2019/013179
Authority: WO
Inventors: 조정구
Original assignee: (주)그린파워
Priority date: 2018-11-14
Filing date: 2019-10-08
Publication date: 2020-05-22
Also published as: KR101971884B1

Abstract

The present invention relates to a cooling pad, and a current collector and an electric vehicle using same, wherein an external heat source, such as a current collection device including a current collection coil, in which electric power is induced by a magnetic field applied from the outside, is detachably mounted to the cooling pad. By using the cooling pad, a heat source can be easily separated when the heat source becomes defective. Further, the cooling pad can be easily and safely separated, coupled, or repaired without influencing the entire cooling system of a vehicle.

Description

Cooling pad and electric vehicle using the same

The present invention relates to a cooling pad installed in a vehicle to cool an external heat source and an electric vehicle using the cooling pad.

An electric vehicle is a vehicle that obtains driving energy from electric energy, not from combustion of fossil fuels, like a conventional vehicle. Electric vehicles were manufactured before gasoline vehicles in 1873, but they have not been commercialized due to problems such as the heavy weight of the battery, the time it takes to charge, and the absence of charging stations, but have recently been redeveloped due to pollution problems and rising oil prices.

At this time, in the case of an electric vehicle, since only the electric motor is used, a separate battery pack is provided to drive the electric motor, and a plug-in method is used to take the charging cable from the installed charging device and connect it to the vehicle to charge. In order to improve the user's convenience, the technology has been developed by a wireless charging method, but the power is charged at the transmitter that transmits power and the receiver that is attached to the vehicle and receives power, so that heat is generated and the life of the receiver is impaired. Did.

In Korean Patent Publication No. 10-2011-0073110 (“Non-fluid magnetic induction charging type electric vehicle current collector cooling system and cooling method”, 2011.06.29.), The coil is located inside the casing, and the coil It describes a cooling system and a cooling method for cooling the heat by flowing the nanofluid into the casing to cool the heat generated by the nanofluid in direct contact with the coil. Cooling is also possible, so the size of the device can be made smaller than before, but since the coil and the cooling system are integrally formed, when a defect occurs in the coil or casing, the casing must be disassembled directly. When dismantling of the nano-fluid leaks, a problem occurs in the cooling system of the entire vehicle, and thus, it is necessary for an operator who has expertise in expertise to dismantle, causing inconvenience and time and cost.

The present invention has been made to solve the above problems. Provided is an electric vehicle including a current collecting device that receives a refrigerant from a cooling system of an electric vehicle and cools an external heat source to be mounted, and a current collecting device performing wireless charging by applying a magnetic field using the cooling pad of the present invention. I want to.

The cooling device for cooling the wireless charging device of the present invention is characterized in that it cools a heat generating source mounted on a cooling pad including a cooling channel receiving a refrigerant from a cooling system of an electric vehicle, and forms an external heat source to be detachable.

The cooling pad of the present invention and the current collector and the electric vehicle using the same according to the above configuration have an advantage of not installing a separate refrigerant and cooling device. In addition, in the event of a heat source failure, only the heat source mounted directly on the cooling pad by the user It has the advantage of being easy to separate, combine and repair.

1 is an exemplary view showing a cooling pad according to an embodiment of the present invention

Figure 2 is a view for explaining the channel connection of the cooling pad according to an embodiment of the present invention

3 is a plan view showing a cooling pad according to an embodiment of the present invention

4 is a block diagram of a cooling pad according to an embodiment of the present invention

Figure 5 is a perspective view showing a heat source according to an embodiment of the present invention

Figure 6 is a perspective view showing the combination of the cooling pad and the heating source of the present invention

7 is a side view showing the combination of the cooling pad and the heat source according to Figure 6

8 is an exemplary view showing a current collector and an electric vehicle according to an embodiment of the present invention

Figure 9 is an exploded perspective view showing a current collector according to an embodiment of the present invention.

10 is a block diagram of an electric vehicle according to an embodiment of the present invention.

To solve the above problems, the cooling pad of the present invention is provided inside the body and the body installed on the outside of the electric vehicle, and connected to the cooling system of the electric vehicle, through which the refrigerant supplied from the cooling system flows. It characterized in that it comprises a cooling flow path and a mounting portion formed so that an external heat source is detachably attached to one surface of the body, and cools the heat source coupled to the mounting portion through heat exchange with the refrigerant supplied from the cooling system of the electric vehicle.

At this time, the cooling pad of the present invention includes an inlet pipe connected so that the refrigerant discharged from the cooling system of the electric vehicle flows into the cooling flow path and an outlet pipe connected so that the refrigerant discharged from the cooling flow path flows into the cooling system of the electric vehicle. It may further include.

In addition, the cooling pad of the present invention may further include a temperature sensor for measuring the temperature of at least one of the cooling pad or the heat source.

In addition, the temperature sensor is composed of a plurality of first temperature sensor for measuring the temperature of the cooling pad and a second temperature sensor for measuring the temperature of the heat generating source, and the cooling pad is measured from the plurality of temperature sensors. It may further include a mounting state monitoring unit that receives the temperature of the cooling pad and the heating source, and monitors the mounting state of the cooling pad and the heating source.

In addition, the cooling pad of the present invention may further include a flow meter for measuring the flow rate of the refrigerant flowing inside the cooling passage.

At this time, the mounting portion is characterized in that a recess is formed in which a part is recessed into one surface of the body, and the external heat generating source is inserted into and coupled to the recess.

In addition, the cooling pad of the present invention may further include a contact member that is charged between an external heat generating source coupled to the depression and the inner surface of the depression to improve the thermal conductivity between the cooling pad and the external heating source. .

At this time, the heat source is characterized in that the receiving pad or a power element.

In addition, the current collector for wirelessly receiving and collecting electric power from the power feeding device using the cooling pad of the present invention includes a magnetic material having one of the cooling pads and one surface selected from claims 1 to 7 coupled to the cooling pad, and It is provided on the other surface of the magnetic material, it characterized in that it comprises a current collector coil that is powered by the magnetic field applied from the outside.

At this time, the current collector of the present invention may further include a power conversion unit for converting the power induced from the current collection coil.

In addition, the electric vehicle using the cooling pad of the present invention receiving the electric power from the power feeding device and performing wireless charging is to traverse at least a portion of the cooling pad and the inside of the electric vehicle selected from any one of claims 1 to 7 And a cooling system including a vehicle cooling channel and a heat exchanger connected to the vehicle cooling channel to cool the refrigerant flowing inside the vehicle cooling channel, wherein the cooling system is connected to the cooling channel of the cooling pad, and the heat exchanger The refrigerant cooled therefrom is characterized by flowing into the cooling passage of the cooling pad.

In addition, the electric vehicle of the present invention may further include a current collecting device including a current collector coil provided on one side of the magnetic body coupled to the cooling pad and the other side of the magnetic body, and the electric power induced by a magnetic field applied from the outside. .

In addition, the electric vehicle of the present invention may further include a power conversion unit for converting the electric power generated from the current collector coil and a vehicle battery for receiving and charging the converted power from the power conversion unit.

The present invention can be applied to various changes and can have various embodiments, and specific embodiments will be illustrated in the drawings and described in detail. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

When an element is said to be "connected" or "connected" to another component, it is understood that other components may be directly connected to or connected to the other component, but other components may exist in the middle. It should be.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person skilled in the art to which the present invention pertains. Terms such as those defined in a commonly used dictionary should be interpreted as having meanings consistent with meanings in the context of related technologies, and should not be interpreted as ideal or excessively formal meanings unless explicitly defined in the present application. Does not.

Hereinafter, the technical spirit of the present invention will be described in more detail with reference to the accompanying drawings.

The accompanying drawings are only examples shown in order to explain the technical spirit of the present invention in more detail, so the technical spirit of the present invention is not limited to the form of the accompanying drawings.

Figure 1 is an exemplary view showing a cooling pad according to an embodiment of the present invention, Figure 2 is a view for explaining the channel connection of the cooling pad according to an embodiment of the present invention, Figure 3 is one of the present invention As a plan view showing a cooling pad according to an embodiment, referring to FIGS. 1 to 3, the cooling pad 310 of the present invention includes a body 311 installed on the outside of the electric vehicle 1 and the body 311 ) Is provided inside, connected to the cooling system 10 of the electric vehicle 1, the cooling flow path 312 through which the refrigerant supplied from the cooling system 10 flows and the body 311 external to one side It may be configured to include a heating unit (2) of the mounting portion 313 is formed to be removable.

The cooling pad 310 may be installed on the vehicle body of the electric vehicle 1 to cool various heat sources mounted on the outside, and is preferably provided to be exposed to the outside of the electric vehicle 1, so that It may be installed so that a heat source operating from the outside can be mounted.

The cooling passage 312 is provided inside the body 311 to receive the refrigerant from the cooling system 10 of the electric vehicle 1 to cool the external heat source 2 mounted on one surface, The refrigerant discharged from the cooling system 10 of the electric vehicle 1 flows through the inlet pipe 312a connected to the cooling passage 312 and the refrigerant discharged from the cooling passage 312 to the electric vehicle 1 It includes a discharge pipe (312b) connected to be introduced into the cooling system 10 of, it is possible to cool the heat generator (2) mounted through heat exchange with the refrigerant supplied from the cooling system (10) of the electric vehicle (1) have. At this time, the cooling passage 312 may be formed to have various shapes inside the body 311, and is preferably formed in a serpentine meander shape to cool the entire surface of the cooling pad 310 evenly. Can be formed.

In addition, the cooling system 10 is provided in the electric vehicle 1 and the vehicle cooling passage 13 and the vehicle cooling passage 13 circulating at least a part of the vehicle to cool the cooled part 12 It may be connected to include a heat exchanger 11 for cooling the refrigerant flowing therein. In this case, the cooling unit 12 may be various devices including an engine, a motor, or a battery of a vehicle that generates heat during operation of the vehicle, wherein the refrigerant cooled from the heat exchanger 11 is the cooling unit 12 ) To flow inside the vehicle cooling passage 13 to traverse to perform cooling of the area requiring cooling.

At this time, the cooling flow path 312 of the cooling pad 310 is connected in parallel with the vehicle cooling flow path 13, and is connected to the vehicle cooling flow path 13a that is cooled and discharged from the heat exchanger 11, and the inflow pipe 312a A vehicle that receives the refrigerant from), flows inside the cooling passage 312, and the refrigerant whose temperature rises through heat exchange with the heat generating source 2 flows into the heat exchanger 11 through the discharge pipe 312b. Cooling refrigerant may be continuously supplied by circulating the heat exchanger 11 by discharging the refrigerant through the cooling passage 13b.

4 is a configuration diagram of a cooling pad according to an embodiment of the present invention. Referring to FIG. 4, the cooling pad 310 of the present invention includes a temperature sensor 316, a flow meter 317, and a mounting state monitoring unit 318. It may be configured to further include.

The temperature sensor 316 is configured to measure the temperature of at least one of the cooling pad 310 or the heating source 2, and is installed on the cooling pad 310 or the heating source 2 to cool the cooling pad 310 Alternatively, the cooling state of the heat generating source 2 can be monitored.

In this case, the temperature sensor 316 includes a plurality of first temperature sensors 316a for measuring the temperature of the cooling pad 310 and a second temperature sensor 316b for measuring the temperature of the heat generator 2. It is made, the mounting state monitoring unit 318 receives the temperature of the cooling pad 310 and the heating source 2 measured from the plurality of temperature sensors (316a, 316b), the cooling pad 310 and the heating source ( Monitor the installation condition of 2). That is, the mounting state monitoring unit 318 measures the temperature change between the cooling pad 310 and the heating source 2, and when the temperature of the heating source 2 increases, the cooling passage of the cooling pad 310 If the temperature of the refrigerant flowing to the 312 does not increase, it is determined that the installation of the heat source 2 is incomplete and the installation detection state can be transmitted to the user.

In addition, the cooling pad 310 further includes a flow meter 317 for measuring the flow rate of the refrigerant flowing in the cooling passage 312, by calculating the flow rate of the refrigerant flowing in the cooling passage 312, the When it is determined in the mounting state detection unit 318 that the heat source 2 is not cooled, the heat source 2 is not cooled even if the flow rate of the refrigerant flowing in the cooling passage 312 is increased and the flow rate of the refrigerant is increased. If not, the installation state detection unit 318 may determine that the installation of the heat source 2 is incomplete and transmit the installation detection state to the user.

At this time, the heat generating source 2 of the present invention can be a variety of devices that require cooling when operating and mounted on the electric vehicle 1 without departing from the gist of the present invention, preferably as shown in FIG. The receiving pad 2a mounted on the outside of the electric vehicle 1 and supplied with power from a transmitting device installed outside, or a power element 2b made of various inverters, converters, and transistors, is preferable. The element 2b is connected to external equipment that is additionally installed in the electric vehicle 1 and may be a transformer for converting electric power collected from the receiving pad 2a to be usable in the electric vehicle 1. .

6 to 8 are views for explaining the coupling relationship between the external heat source 2 mounted on the cooling pad 310 of the present invention. Referring to FIGS. 6 to 8, the cooling pad 310 is one side In the mounting portion 313 for mounting the heating source 2 is formed, the mounting portion 313 is configured to include a structure and means for mounting the heating source 2 on one surface of the body 311, the The mounting portion 313 is detachable from the heating source 2, such as a screw coupling in which the heating source 2 is fastened through a bolt B on one surface of the body 311, and a dull structure in which the heating source 2 is slidable and coupled. It can be formed to have a variety of coupling structures formed to.

Aesop, as a preferred example of the mounting portion of the cooling pad 310, the cooling pad 310 is a bolt (B) so that the heating source 2 is in surface contact with one surface of the body 311 as shown in FIG. By being screwed using, the heat generating source 2 can be easily attached and detached to one surface of the cooling pad 310, and the bolt 3 is inserted into the body 311 and the heat generating source 2 to be fastened. A bolt tab is formed to fasten the heat generating source 2 to one surface of the cooling pad 310.

In addition, the mounting portion 313 is installed on a part of the body 311, the external heat source (2) having a variety of sizes by having an external coupling portion to support the heat generating source (2) from falling off from the cooling pad (310) ) Can be formed in a structure applicable to, for example, the outer coupling portion having the above-described purpose is hinged to the side of the body 311 and the side of the body 311 on one side of the support. The support can be formed including a hinge that is coupled to be rotatable. At this time, the support has a bent shape so as to contact the lower portion of the heating source 2, and when the heating source 2 is inserted into the depression 314, so as to surround a part of the lower portion of the heating source 2 In combination, it is possible to prevent the heat generating source 2 from deviating from the depression 314. At this time, the support is formed in a variety of lengths to surround the lower portion of the heat source 2, so that the heat source 2 can be supported so that it does not deviate even when the size of the heat source 2 is less than the depression 314. In addition, the bolt (B) penetrates through the lower portion of the support and is fastened to the bolt tab formed on the body 311, thereby preventing the rotation of the support to be formed to be more firmly mounted on the heating source (2). .

That is, the mounting portion 313 may be modified by various means for attaching and detachably attaching an external heating source 2 to one surface of the body 311 without departing from the gist of the present invention. ) For the firm coupling of the body 311, a bolt tab or an external coupling member corresponding to the mounting portion 313 may be formed in the housing of the heat generator 2.

In addition, the cooling pad 310 is charged between an external heat generating source 2 coupled to one surface of the body 311 and one surface of the body 311, so that the cooling pad 310 and the external heating source ( 2) may further include a contact member 315 to improve the thermal conductivity with, wherein the contact member 315 is a variety of fillers such as a thermal grease having a high thermal conductivity or a heating sheet to help heat spread, the cooling pad 310 and the heating source 2 may be made of various materials for increasing the area in contact with the surface, preferably when the surface of the portion where the heating source 2 is coupled is not smooth, the cooling pad 310 In order to prevent an empty space from being formed between the surfaces of the heat generating source 2 in contact with one surface and reducing the heat transfer efficiency, the contact member 315 is made of a fluid having a viscosity filled to fill the empty space. desirable.

In addition, the mounting portion is formed with a recessed portion 314 partially recessed inward on one surface of the body 311, and the external heat generating source 2 may be inserted into and coupled to the recessed portion 314. At this time, a portion of the heat generating source 2 is inserted into a depression space formed by being recessed inward on one surface of the depression 314, thereby increasing the contact area between the cooling pad 310 and the heating source 2, Cooling efficiency of the heat generating source 2 may be increased, and the contact member 315 may include an external heat generating source 2 and the depression 314, in which the cooling pad 310 is coupled to the depression 314. Filled between the inner surfaces can further improve the thermal conductivity between the cooling pad 310 and the external heat generating source (2).

8 is an exemplary view showing a current collector and an electric vehicle according to an embodiment of the present invention. Referring to FIG. 8, the current collector 30 using the cooling pad 310 of the present invention is the electric vehicle 1 ) Is a device that wirelessly receives power from an external power supply device 40 and charges power. As shown in FIG. 9, the current collector 30 has one side of the cooling pad 310 and the It may be configured to include a magnetic body 320 coupled to the cooling pad 310 and a current collecting coil 330 provided on the other surface of the magnetic body 320 and the electric power is induced by a magnetic field applied from the outside.

At this time, the current collecting device 30 and the power feeding device 40 may be configured in various ways to wirelessly transmit and receive power such as electromagnetic induction, magnetic resonance and electromagnetic wave methods, preferably the current collecting device 30 Is a voltage induced in the current collecting coil 330 by a magnetic field applied from the outside by a current collecting coil 330 wound along the direction of the applied magnetic field, and rectifies the induced voltage so that the vehicle can be charged and used. . At this time, the magnetic body 320 is coupled to the cooling pad 310 on one surface, the current collecting coil 330 is provided on the other surface, the magnetic field generated from the feeding coil 30 of the power feeding device 40 is the current collecting coil In order to increase the magnetic flux induced in 330, and to increase the magnetic flux coupling between the current collecting coil 330 and the feeding coil 410, the magnetic body 320 and the current collecting coil 330 are in accordance with the subject matter of the present invention. It can be configured in various shapes without deviation.

Here, the magnetic body 320 and the current collecting coil 330 may be included in the above-described receiving pad 2a (FIG. 5), and the power conversion unit 340 may be included in the above-described power device 2b (FIG. 5). Thus, it may be composed of a current collector 30 mounted to the cooling pad 310.

In addition, FIG. 10 is a configuration diagram of an electric vehicle according to an embodiment of the present invention. Referring to FIG. 10, the current collector 30 is a power converter for converting electric power induced by the current collector coil 330 ( 340), the electric power converted from the power conversion unit 340 may be charged to the vehicle battery 20 of the electric vehicle (1). At this time, the power conversion unit 340 is a transformer for converting the power value induced to be used in the current collecting coil 330 to be used in the electric vehicle (1) or to convert the collected DC voltage to AC It may include an inverter or a converter. In general, the current collector coil 330 and the power converter 340 of the current collector 30 are operated by receiving a high-pressure magnetic field and power, and accordingly, a heat exchanger capable of cooling heat is required. Accordingly, the present invention is coupled to the magnetic pad 320, the current collecting coil 330 and the power converter 340 to be detachably attached to the cooling pad 320, the current collector coil 330 or the power converter 340 Can cool the fever.

In addition, referring to FIG. 10, the configuration of the electric vehicle 1 using the cooling pad 320 of the present invention will be described in more detail. The electric vehicle 1 performing wireless charging of the present invention is described above. Cooling the refrigerant flowing in the vehicle cooling flow path 13 and the vehicle cooling flow path 13 and the vehicle cooling flow path 13 for traversing at least a portion of the inside of the cooling pad 310 and the electric vehicle 1 It may be configured to include a cooling system 10 including a heat exchanger 11, wherein the cooling system 10 is connected to the cooling passage 320 of the cooling pad 310, the heat exchanger ( The refrigerant cooled from 11) may be flowed into the cooling passage 320 of the cooling pad 310. In addition, the electric vehicle (1) is provided on the other surface of the magnetic body 320 and the magnetic body 320 is coupled to the cooling pad 320, one side, the current collecting coil is the power induced by the magnetic field applied from the outside ( By further comprising a current collector 30 including 330, it is possible to perform wireless charging by receiving power wirelessly from an external power supply device 40.

At this time, the electric vehicle 1 is a power conversion unit 340 for converting the electric power generated from the current collecting coil 330 and a vehicle battery 20 for receiving and charging the converted power from the power conversion unit 340 It may further include, the power is induced to the current collecting coil 330 by the magnetic field applied from the power supply device 40, the induced power is the vehicle battery 20 through the power conversion unit 340 It is transformed so that it can be charged to wireless charging.

It should not be interpreted that the technical spirit is limited to the above-described embodiments of the present invention. Of course, the scope of application is various, and various modifications can be implemented at the level of those skilled in the art without departing from the gist of the present invention as claimed in the claims. Accordingly, such improvements and modifications fall within the protection scope of the present invention as long as it is apparent to those skilled in the art.

** Explanation of sign **

1: Electric vehicle

10: cooling system 11: heat exchanger

12: drive unit 13: vehicle cooling passage

20: vehicle battery

30: current collector

310: cooling pad 311: body

312: cooling passage 312a: inlet piping

312b: discharge piping

313: mounting portion 314a: depression

315: close contact member 316: temperature sensor

316a: first temperature sensor 316b: second temperature sensor

317: flow meter 318: mounting status monitoring unit

320: magnetic material 330: current collector coil

340: power conversion unit

40: feeding device

410: power supply coil 420: power conversion unit

430: external power

2: heating source

2a: receiving pad 2b: power device

Claims

A body installed on the outside of the electric vehicle;

A cooling passage provided inside the body and connected to a cooling system of the electric vehicle, through which a refrigerant supplied from the cooling system flows; And

A mounting portion formed to detach and attach an external heat source to one surface of the body;

Including,

A cooling pad characterized by cooling a heat generating source coupled to the mounting portion through heat exchange with a refrigerant supplied from the cooling system of the electric vehicle.
According to claim 1,

An inlet pipe connected so that the refrigerant discharged from the cooling system of the electric vehicle flows into the cooling passage; And

A discharge pipe connected so that the refrigerant discharged from the cooling passage flows into the cooling system of the electric vehicle;

Cooling pad further comprising a.
According to claim 2,

A temperature sensor for measuring the temperature of at least one of the cooling pad or the heating source;

Cooling pad further comprising a.
According to claim 3,

The temperature sensor comprises a plurality of first temperature sensors for measuring the temperature of the cooling pad and a second temperature sensor for measuring the temperature of the heat generating source,

The cooling pad,

A mounting state monitoring unit receiving the temperature of the cooling pad and the heating source measured from the plurality of temperature sensors, and monitoring the mounting state of the cooling pad and the heating source;

Cooling pad further comprising a.
According to claim 4,

A flow meter for measuring the flow rate of the refrigerant flowing inside the cooling passage;

Cooling pad further comprising a.
According to claim 1,

A contact member that is charged between an external heat source coupled to one surface of the body and one surface of the body, and improves thermal conductivity between the cooling pad and the external heat source;

Cooling pad further comprising a.
According to any one of claims 1 to 6,

The heat generating source is a cooling pad, characterized in that the receiving pad or a power element.
In the electric vehicle that receives the power from the current collector and performs wireless charging,

A cooling pad according to any one of claims 1 to 6;

A cooling system including a vehicle cooling flow path that traverses at least a portion of the interior of the electric vehicle and a heat exchanger connected to the vehicle cooling flow path to cool the refrigerant flowing inside the vehicle cooling flow path;

It includes,

The cooling system is connected to the cooling passage of the cooling pad, the electric vehicle, characterized in that to flow the refrigerant cooled from the heat exchanger to the cooling passage of the cooling pad.
The method of claim 8,

A current collector provided on one side of a magnetic body coupled to the cooling pad and on the other side of the magnetic body, the current collecting coil being powered by a magnetic field applied from the outside;

An electric vehicle characterized in that it further comprises.
The method of claim 9,

A power conversion unit for converting the power induced from the current collecting coil; And

A vehicle battery for receiving and charging the converted power from the power converter;

An electric vehicle characterized in that it further comprises.