KR102503281B1 - Battery cooler - Google Patents

Abstract

A battery cooling device according to an embodiment of the present invention includes a first support portion connected to a vehicle frame, a first plate disposed on an upper surface of the first support portion and having a concave flow path formed on one surface, and a first plate connected to an inner surface of a straight section of the flow passage. A cooling fin, a second plate disposed on the upper surface of the first plate to form an outlet hole and an inlet hole communicating with the flow path, and a second support part disposed on the upper surface of the second plate to seat the battery, The first plate and the second plate may be made of a thermally conductive composite material that generates heat by receiving power.

Description

Battery Cooler {BATTERY COOLER}

The present invention relates to a battery cooling device.

In most conventional battery cooling devices, a flow path may be formed by assembling upper and lower plates in which flow paths are molded in an aluminum plate, mounting connectors at inlets and outlets of the flow channels, and brazing the upper and lower plates and the connectors.

In addition, the completed cooling device was additionally equipped with a pad on the flat section of the cooling device for battery installation. Battery cells are installed in the cooling device, and cooling water is circulated in the passage of the cooling device to cool heat generated from the battery while driving the vehicle.

Conventional technology is forming an aluminum plate with a press mold to form a cooling passage, but when excessive forming is performed, there is a problem in that the material of the raw material is reduced and cracks occur in the molded part, so the passage is freely formed. there was a limit to In addition, in order to increase moldability, since the thickness of the material must be adjusted upward by 1.5t or more, it becomes a factor in increasing material cost and deteriorating cooling performance. In order to overcome the performance degradation of the cooling device, the size of the battery cooling device has to be increased or a plurality of cooling devices must be installed, resulting in poor economic feasibility. In addition, a battery cooling device using a conventional aluminum material has weak corrosion resistance, and a factor that deteriorates heat exchange performance may occur due to mounting a battery cell after mounting a pad on a bottom surface in contact with the battery.

It has been devised based on the above technical background, and an object of the present invention is to provide a battery cooling device in which the cooling performance of the battery is improved to stabilize the performance by maintaining the battery of the electric vehicle at room temperature.

A battery cooling device according to an embodiment of the present invention includes a first support portion connected to a vehicle frame, a first plate disposed on an upper surface of the first support portion and having a concave flow path formed on one surface, and a first plate connected to an inner surface of a straight section of the flow passage. A cooling fin, a second plate disposed on the upper surface of the first plate to form an outlet hole and an inlet hole communicating with the flow path, and a second support part disposed on the upper surface of the second plate to seat the battery, The first plate and the second plate may be made of a thermally conductive composite material that generates heat by receiving power.

The composite material may include a polymer matrix and a thermally conductive filler that is impregnated into the polymer matrix and generates heat when power is supplied.

The passage may include a pair of accommodation spaces spaced apart from each other.

The first plate may include a connecting portion concavely formed between the pair of accommodating spaces and stepped with the passage.

The cooling fin includes a plate-shaped body extending a predetermined length, a mounting member extending perpendicularly to the body at an end portion of the body, a protruding member protruding from one surface of the body, and a protruding member formed on one surface of the body. A battery cooling device comprising a communication hole adjacent to an end of the.

The protruding member may be formed by partially cutting one surface of the body and bending the free end outward.

A plurality of the protruding members are spaced apart along the longitudinal direction of the body, and may be formed by repeatedly bending in different directions.

The cooling fins may be formed by repeatedly arranging repeatedly bent unit fins to be offset from each other.

It is seated inside the first plate and may further include an inner plate protruding from one surface of the guide portion partitioning the passage.

The second plate includes a seating plate on an upper surface on which a plurality of batteries are seated, a first frame formed along an edge of the seating plate and having the batteries disposed therein, and formed in a lattice shape inside the first frame. It may include a second frame to space the batteries of the dog.

The first plate and the second plate may be heat-sealed and coated with silicon.

The thermally conductive filler may be a CNT (Carbon Nano Tube) material.

In the battery cooling device according to an embodiment of the present invention, corrosion resistance and processability are improved by using a thermally conductive composite material, and cooling performance can be improved due to excellent thermal conductivity.

In the battery cooling device according to an embodiment of the present invention, cooling performance may be improved by forming a turbulent flow in a refrigerant through a cooling fin.

In the battery cooling device according to an embodiment of the present invention, since the thermally conductive composite material generates heat as power is supplied, the battery can maintain room temperature even in a low-temperature environment, thereby maintaining battery performance.

1 is a conceptual diagram illustrating a state in which a battery cooling device according to an embodiment of the present invention is applied to a vehicle.
2 is a perspective view of a battery cooling device according to an embodiment of the present invention.
3 is an exploded perspective view of a battery cooling device according to an embodiment of the present invention.
4 is a perspective view showing a state in which the first plate and cooling fins of FIG. 3 are coupled;
5 is a perspective view of the cooling fin shown in FIG. 4;
FIG. 6 is a cross-sectional view taken along line AA' of the cooling fin shown in FIG. 5 .
7 is a front view of the cooling fin shown in FIG. 5;
8 is a cross-sectional side view of the battery cooling device shown in FIG. 2;
9 is an exploded perspective view of a battery cooling device according to a second embodiment of the present invention.
10 is a perspective view of a battery cooling device according to a third embodiment of the present invention.
11 is an exploded perspective view of a battery cooling device according to a third embodiment of the present invention.
12 is a perspective view showing a state in which the first plate and cooling fins of FIG. 11 are coupled;
13 is a perspective view of the cooling fin shown in FIG. 12;
14 is a front view of the cooling fin shown in FIG. 13;
15 is a plan view of the cooling fin shown in FIG. 13;
16 is a cross-sectional side view of the battery cooling device shown in FIG. 10;
17 is a perspective view of a battery cooling device according to a fourth embodiment of the present invention.
18 is an exploded perspective view of a battery cooling device according to a fourth embodiment of the present invention.
19 is a perspective view illustrating a state in which the first plate, the inner plate, and the cooling fins of FIG. 18 are coupled;
20 is a perspective view of the cooling fin shown in FIG. 19;
21 is a front view of the cooling fin shown in FIG. 20;
22 is an exploded perspective view showing a first modified example of the battery cooling device according to the fourth embodiment of the present invention.
23 is a perspective view illustrating a state in which the first plate, the inner plate, and the cooling fins of FIG. 22 are coupled.
24 is a perspective view of the cooling fin shown in FIG. 23;
25 is a plan view of the cooling fin shown in FIG. 24;
26 is an exploded perspective view showing a second modified example of the battery cooling device according to the fourth embodiment of the present invention.
27 is a perspective view illustrating a state in which the first plate, the inner plate, and the cooling fins of FIG. 26 are coupled.
28 is a perspective view of the cooling fin shown in FIG. 27;
29 is a plan view of the cooling fin shown in FIG. 28;
30 is a side view of the cooling fin shown in FIG. 28;
31 is a perspective view of a second plate according to a fifth embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. This invention may be embodied in many different forms and is not limited to the embodiments set forth herein.

In order to clearly describe the present invention, parts irrelevant to the description are omitted, and the same reference numerals are assigned to the same or similar components throughout the specification.

In addition, since the size and thickness of each component shown in the drawings are arbitrarily shown for convenience of explanation, the present invention is not necessarily limited to the shown bar.

In addition, throughout the specification, when a certain component is said to "include", it means that it may further include other components without excluding other components unless otherwise stated.

1 is a conceptual diagram illustrating a state in which a battery cooling device according to an embodiment of the present invention is applied to a vehicle.

Referring to FIG. 1 , a battery cooling device 1000 according to an embodiment of the present invention may be installed inside a vehicle frame 1 . The battery cooling device 1000 may be disposed on the lower surface of the vehicle frame 1 to support a plurality of batteries 2 .

The battery cooling device 1000 can uniformly cool the plurality of batteries 2 seated thereon by circulating the refrigerant supplied from the fluid supply unit 3 .

When a voltage is applied to the battery cooling device 1000 by the power supply unit 4,

Figure 2 is a perspective view of a battery cooling device according to an embodiment of the present invention, Figure 3 is an exploded perspective view of the battery cooling device according to an embodiment of the present invention, Figure 4 is a first plate and cooling fins of FIG. It is a perspective view showing the combined state.

2 and 3, the battery cooling device 1000 according to an embodiment of the present invention includes a first plate 1100, a second plate 1200, a first support part 1300, and a second support part 1400. ), a connection pipe 1600, and a cooling fin 1140.

Referring to FIGS. 3 and 4 , the first plate 1100 may have a predetermined plate shape and may be formed in a rectangular shape as a whole. The first plate 1100 may have a flow path 1110 concavely formed on an upper surface thereof.

The passage 1110 may include a first accommodating space 1111 , a second accommodating space 1112 , and a connection part 1115 . For example, the connecting portion 1115 may be concavely formed on the upper surface of the first plate 1100 and may extend from the center of the first plate 1100 along the longitudinal direction. At this time, a first accommodating space 1111 and a second accommodating space 1112 may be formed on both sides of the connection part 1115, respectively. As another example, upper surfaces of the first and second accommodating spaces 1112 may be formed higher than upper surfaces of the connecting portion 1115, so that the first and second accommodating spaces 1112 and the connecting portion 1115 may be stepped.

The passage 1110 may communicate with an inlet hole 1220 and an outlet hole 1230 formed in the second plate 1200 to be described later. For example, the refrigerant flows into the first accommodating space 1111 of the first plate 1100 through the inflow hole 1220, and the refrigerant flows into the second accommodating space 1112 through the connecting portion 1115 and flows through the outflow hole. It can be discharged through (1230). The refrigerant may cool the battery while flowing along the passage 1110 .

The guide part 1130 protrudes from the upper surface of the flow path 1110, and the direction of the refrigerant can be guided by the guide part 1130. For example, a plurality of guide units 1130 may be formed in each of the first accommodating space 1111 and the second accommodating space 1112 . In this case, the guide parts 1130 formed in the first accommodating space 1111 and the second accommodating space 1112 may be symmetrical with respect to the connection part 1115.

A plurality of first fastening holes 1116 may be formed in the connecting portion 1115 along the longitudinal direction. In addition, fastening members such as rivets and bolts may be connected to the first fastening holes 1116 . Accordingly, after the connecting portion 1115 and the coupling portion 1210 to be described later are fitted and coupled, the first plate 1100 and the first plate 1100 are formed by passing the fastening member through the first fastening hole 1116 and the second fastening hole 1211. Two plates 1200 may be combined.

Referring to FIG. 3 , the second plate 1200 may have a predetermined plate shape and may be formed in a rectangular shape as a whole. The second plate 1200 is coupled to the top of the first plate 1100, and thus can close the upper surface of the flow path 1110.

The second plate 1200 may have a coupling portion 1210 formed thereon. For example, the coupling part 1210 may be concavely formed on the upper surface of the second plate 1200 . At this time, since the lower surface of the coupling part 1210 protrudes from the second plate 1200, it can be inserted into the connecting part 1115 of the first plate 1100.

In addition, the coupling part 1210 may have a second fastening hole 1211 formed therein. Fastening members such as rivets and bolts may be connected to the second fastening holes 1211 . Accordingly, after fitting and coupling the connection part 1115 and the coupling part 1210, the first plate 1100 and the second plate are formed by passing fastening members through the first fastening hole 1116 and the second fastening hole 1211. (1200) can be combined.

The second plate 1200 may further include an inflow hole 1220 and an outflow hole 1230 . The inflow hole 1220 and the outflow hole 1230 are adjacent to one corner of the second plate 1200 and may be respectively disposed on both sides of the coupling part 1210 .

An inlet pipe 1620 and an outlet pipe 1630 may be coupled to the inlet hole 1220 and the outlet hole 1230, respectively. Accordingly, the supplied refrigerant may flow into the inlet hole 1220 through the inlet pipe 1620, and the refrigerant may move along the flow path 1110 of the first plate 1100 and pass through the outlet hole 1230 and the outlet pipe. It can be discharged through (1630).

In addition, rubber packing members 1640 may be inserted between the inlet hole 1220 and the inlet pipe 1620 and between the outlet hole 1230 and the outlet pipe 1630, respectively. Accordingly, the packing member 1640 may prevent the refrigerant from leaking through the inflow hole 1220 or the outflow hole 1230 .

A silicon gasket may be formed on the first plate 1100 and the second plate 1200 by heat-sealing and coating silicon rubber. For example, the silicon gasket may be made of silicon rubber in which carbon nanotubes (CNTs) are dispersed. Accordingly, when the second plate 1200 and the first plate 1100 are laminated and compressed, airtightness between the first plate 1200 and the second plate 1200 can be maintained by the silicon gasket.

In addition, the first plate 1100 and the second plate 1200 may be made of a thermally conductive composite material. For example, a thermally conductive composite material may be prepared by dispersing and mixing a thermally conductive filler in a polymer matrix. For example, the thermally conductive filler is CNT, and the thermally conductive composite material manufactured according to this may be a CNT composite material.

Battery cells are exposed to a corrosive environment due to leakage of chemicals such as electrolytes, and CNT composite materials have high corrosion resistance, so they can have high durability even in corrosive environments. CNT composite material enables the realization of high-conductivity plastic material, preventing shock by removing static electricity generated from battery cells and other electronic parts. Since it is possible to mold various types of plates that do not exist, the outer frame can be integrally manufactured with the second plate for mounting the battery.

In addition, the CNT composite material can conduct current with high conductivity, and when the first plate 100 and the second plate 200 made of such a CNT composite material are energized, they can be heated and the temperature rises, so even in winter It is possible to prevent a decrease in lifespan by maintaining room temperature.

In addition, when the first plate 100 is formed of a CNT composite material, the inlet pipe 1620 and the outlet pipe 1630 may be formed integrally on the upper surface of the first plate 100 at the same time.

Meanwhile, the cooling fins 1140 may be disposed between the first plate 1100 and the second plate 1200 . In this case, a plurality of cooling fins 1140 may be formed and disposed at predetermined positions in the flow path 1110 . For example, the cooling fins 1140 may be disposed between the guide parts 1130 . Each of the cooling fins 1140 may have various lengths corresponding to the shape of the passage 1110 partitioned by the guide part 1130 .

In addition, the cooling fin 1140 is made of a CNT composite material and can be formed in various structures, and its heat dissipation performance can be maximized due to its high thermal conductivity.

Referring to FIG. 3 , the first support 1300 may be disposed below the first plate 1100 . The first support part 1300 may have a plate shape having a predetermined area. The first support part 1300 may be coupled to the vehicle frame 1 to support the first plate 1100 .

The second support part 1400 may be disposed above the second plate 1200 . The second support part 1400 may have a plate shape having a predetermined area. For example, the second support portion 1400 is formed as a pair, and each may be seated on the second plate 1200 . In this case, the pair of second support parts 1400 may be disposed on both sides of the coupling part 1210, respectively. A battery cell may be seated on the second support part 1400 .

The first support part 1300 and the second support part 1400 may also be made of a CNT composite material.

FIG. 5 is a perspective view of the cooling fin shown in FIG. 4, FIG. 6 is a cross-sectional view along the line AA′ of the cooling fin shown in FIG. 5, FIG. 7 is a front view of the cooling fin shown in FIG. 5, and FIG. It is a side cross-sectional view of the battery cooling device shown in FIG. 2 .

5 to 7 , the cooling fin 1140 according to an embodiment of the present invention may include a body 1141, a seating member 1142, a protruding member 1143, and a communication hole 1144. .

The body 1141 is a plate shape having a predetermined length. At this time, the width of the body 1141 may be formed to correspond to the width of the passage 1110 formed between the guide parts 1130 . In addition, mounting members 1142 may be formed at both ends of the body 1141 . For example, the seating member 1142 may be formed by bending downward at both ends of the body 1141, respectively. Accordingly, the cooling fin 1140 may be seated on the flow path 1110 through the seating member 1142 .

The protruding member 1143 may protrude upward and downward from the body 1141 . A plurality of protruding members 1143 may be formed at predetermined intervals along the longitudinal direction of the body 1141 . For example, the protruding member 1143 may be formed by cutting a portion of the body 1141 and bending it upward or downward.

The protruding member 1143 may include a first protruding member 1143a and a second protruding member 1143b. The first protruding member 1143a protrudes upward from the body 1141, and the second protruding member 1143b protrudes downward from the body 1141. For example, the first protruding member 1143a is bent upward by cutting a portion of the body 1141, and the second protruding member 1143b is bent downward by cutting a portion of the body 1141. As another example, the first protruding member 1143a and the second protruding member 1143b may be formed to form the same angle as the body 1141 and be horizontal to each other.

A plurality of communication holes 1144 may be formed along the longitudinal direction of the body 1141 . The communication hole 1144 may be formed adjacent to the protruding member 1143 . For example, when the first protruding member 1143a and the second protruding member 1143b are formed by partially incising the body 1141, the incised portion of the body 1141 is opened and a communication hole 1144 is formed. can

Accordingly, as shown in FIG. 8 , the battery cooling device 1000 places the cooling fins 1140 on the flow path 1110 to couple the first plate 1100 and the second plate 1200 to the flow path 1110. ), the cooling efficiency can be improved by increasing the contact area and flow time of the refrigerant by the protruding member 1143 of the cooling fin 1140.

9 is an exploded perspective view of a battery cooling device according to a second embodiment of the present invention.

Most of the configurations of the second embodiment of the present invention are similar to the configuration of the battery cooling device 1000 according to one embodiment of the present invention, and a detailed description thereof will be omitted. Only the present configuration will be described.

Referring to FIG. 9 , the battery cooling device 1000 according to the second embodiment of the present invention may further include a gasket 1500 .

The gasket 1500 may be disposed between the first plate 1100 and the second plate 1200 . For example, the gasket 1500 may be made of silicone rubber in which CNTs are dispersed. Accordingly, when the gasket 1500 is pressed between the first plate 1100 and the second plate 1200, the gasket 1500 creates a gap between the first plate 1100 and the second plate 1200. Confidentiality can be maintained.

10 is a perspective view of a battery cooling device according to a third embodiment of the present invention, FIG. 11 is an exploded perspective view of a battery cooling device according to a third embodiment of the present invention, and FIG. 12 is a first plate and cooling device of FIG. 11 It is a perspective view showing the state in which the pin is coupled.

10 and 11, a battery cooling device 2000 according to an embodiment of the present invention includes a first plate 2100, a second plate 2200, a first support part 2300, and a second support part 2400. , the connection pipe 2600 and the cooling fin 2140 may be included.

Referring to FIGS. 11 and 12 , the first plate 2100 may have a predetermined plate shape and may be formed in a rectangular shape as a whole. The first plate 2100 may have a channel 2110 concavely formed on an upper surface thereof.

The passage 2110 may include a first accommodating space 2111 , a second accommodating space 2112 , and a connection part 2115 .

The first accommodating space 2111 and the second accommodating space 2112 are formed to be spaced apart, and respective ends may communicate with each other through a connecting portion 2115 . For example, the first accommodating space 2111 and the second accommodating space 2112 may be bent multiple times in a "c" shape. Accordingly, since the length of the passage 2110 is increased, the flow time of the refrigerant is increased, so that the cooling efficiency can be improved.

The passage 2110 may communicate with an inlet hole 2220 and an outlet hole 2230 formed in the second plate 2200 to be described later. For example, the refrigerant flows into the first accommodating space 2111 of the first plate 2100 through the inflow hole 2220, and the refrigerant flows into the second accommodating space 2112 through the connecting portion 2115 and flows through the outflow hole. It can be discharged through (2230). The refrigerant may cool the battery while flowing along the passage 2110 .

The guide part 2130 protrudes from the upper surface of the flow path 2110, and the direction of the refrigerant can be guided by the guide part 2130. For example, a plurality of guide units 2130 may be formed in each of the first accommodating space 2111 , the second accommodating space 2112 , and the connection unit 2115 . At this time, the plurality of guide parts 2130 may be formed to have various shapes and lengths such as straight and curved to correspond to the shape of the flow path 2110 .

A plurality of first fastening holes 2116 may be formed in the first plate 2100 . Fastening members such as rivets and bolts may be connected to the first fastening holes 2116 . Accordingly, the first plate 2100 and the second plate 2200 may be coupled by passing the fastening member through the first fastening hole 2116 and the second fastening hole 2211 .

Referring to FIG. 11 , the second plate 2200 has a predetermined plate shape and may be formed in a rectangular shape as a whole. The second plate 2200 is coupled to the top of the first plate 2100, and thus can close the upper surface of the flow path 2110.

A coupling portion 2210 may be formed in the second plate 2200 . For example, the coupling part 2210 may be recessed from the lower surface of the second plate 2200 and formed convex upward.

In addition, the second plate 2200 may have a second fastening hole 2211 formed between the couplers 2210 . Fastening members such as rivets and bolts may be connected to the second fastening holes 2211 . Accordingly, after stacking the first plate 2100 and the second plate 2200, the first plate 2100 and The second plate 2200 may be coupled.

The second plate 2200 may further include an inflow hole 2220 and an outflow hole 2230 . The inlet hole 2220 and the outlet hole 2230 are adjacent to one edge of the second plate 2200 and may be disposed to correspond to the first accommodating space 2111 and the second accommodating space 2112, respectively. An inlet pipe 2620 and an outlet pipe 2630 may be coupled to the inlet hole 2220 and the outlet hole 2230, respectively. Accordingly, the supplied refrigerant may flow into the inlet hole 2220 through the inlet pipe 2620, and the refrigerant may move along the flow path 2110 and be discharged through the outlet hole 2230 and the outlet pipe 2630. can

In addition, rubber packing members 2640 may be inserted between the inlet hole 2220 and the inlet pipe 2620 and between the outlet hole 2230 and the outlet pipe 2630, respectively. Accordingly, the packing member 2640 can prevent the refrigerant from leaking through the inflow hole 2220 or the outflow hole 2230 .

Meanwhile, the cooling fins 2140 may be disposed between the first plate 2100 and the second plate 2200 . In this case, a plurality of cooling fins 2140 may be formed and disposed at predetermined positions in the flow path 2110 . For example, the cooling fins 2140 may be disposed between the guide parts 2130 . Each of the cooling fins 2140 may have various lengths corresponding to the shape of the passage 2110 partitioned by the guide part 2130 . In addition, the cooling fin 2140 is made of a CNT composite material and can be formed in various structures, and its heat dissipation performance can be maximized due to its high thermal conductivity.

Referring to FIG. 10 , the first support 2300 may be disposed below the first plate 2100 . The first support part 2300 may have a plate shape having a predetermined area. The first support part 2300 may be coupled to the vehicle frame 1 to support the first plate 2100 .

The second support part 2400 may be disposed above the second plate 2200 . The second support part 2400 may have a plate shape having a predetermined area. A battery cell may be seated on the second support part 2400 .

13 is a perspective view of the cooling fin shown in FIG. 12, FIG. 14 is a front view of the cooling fin shown in FIG. 13, FIG. 15 is a plan view of the cooling fin shown in FIG. 13, and FIG. 16 is a plan view of the cooling fin shown in FIG. It is a cross-sectional side view of the battery cooling device.

13 to 15, the cooling fin 2140 according to the third embodiment of the present invention may include a body 2141, a seating member 2142, a protruding member 2143, and a communication hole 2144. there is.

The body 2141 has a plate shape having a predetermined length and may be disposed perpendicular to the upper surface of the flow path 2110 . In this case, the height of the body 2141 may be formed to correspond to the height of the passage 2110 . Also, mounting members 2142 may be formed at both ends of the body 2141 . For example, the seating member 2142 may be formed by bending both ends of the body 2141 in a horizontal direction, respectively. At this time, the seating member 2142 may include a first seating member 2142a and a second seating member 2142b that are bent in opposite directions. Accordingly, the cooling fin 2140 may be seated on the flow path 2110 through the seating member 2142 .

The protruding member 2143 may protrude left or right from the body 2141 . A plurality of protruding members 2143 may be formed at predetermined intervals along the longitudinal direction of the body 2141 . For example, the protruding member 2143 may be formed by cutting a portion of the body 2141 and bending it to the left or right.

The protruding member 2143 may include a first protruding member 2143a and a second protruding member 2143b. The first protruding member 2143a protrudes to the right side of the body 2141, and the second protruding member 2143b protrudes to the left side of the body 2141. For example, the first protruding member 2143a is bent to the right by cutting a portion of the body 2141, and the second protruding member 2143b is bent to the left by cutting a portion of the body 2141. As another example, the first protruding member 2143a and the second protruding member 2143b may be formed to form the same angle as the body 2141 and may be horizontal to each other.

A plurality of communication holes 2144 may be formed along the longitudinal direction of the body 2141 . The communication hole 2144 may be formed adjacent to the protruding member 2143 . For example, when the first protruding member 2143a and the second protruding member 2143b are formed by partially incising the body 2141, the incised portion of the body 2141 is opened and a communication hole 2144 is formed. can

Accordingly, as shown in FIG. 16, the battery cooling device 2000 arranges the cooling fins 2140 on the flow path 2110 to couple the first plate 2100 and the second plate 2200, and then the flow path 2110. ), the cooling efficiency can be improved by increasing the contact area and flow time of the refrigerant by the protruding member 2143 of the cooling fin 2140.

17 is a perspective view of a battery cooling device according to a fourth embodiment of the present invention, FIG. 18 is an exploded perspective view of a battery cooling device according to a fourth embodiment of the present invention, and FIG. 19 is a first plate, inner It is a perspective view showing the state in which the plate and the cooling fin are combined.

17 and 18, the battery cooling device 3000 according to an embodiment of the present invention includes a first plate 3100, an inner plate 3102, a cooling fin 3140, a second plate 3200, It may include a first support part 3300, a second support part 3400 and a connection pipe 3600.

Referring to FIGS. 18 and 19 , the first plate 3100 may have a predetermined plate shape and may be formed in a rectangular shape as a whole. The first plate 3100 may have a receiving groove 3101 concavely formed on an upper surface thereof. An inner plate 3102 may be disposed in the receiving groove 3101 , and a flow path 3110 may be formed inside the receiving groove 3101 by the inner plate 3102 .

The inner plate 3102 may have a predetermined plate shape and may be formed to correspond to the receiving groove 3101 . A guide part 3130 protrudes from the upper surface of the inner plate 3102, and a flow path 3110 is formed inside the receiving groove 3101 by the guide part 3130, so that the direction of the refrigerant can be guided.

The guide part 3130 may include a first guide part 3131 and a second guide part 3132 . The first guide part 3131 may extend from the center of the rear edge of the inner plate 3102 and be divided into two branches at a predetermined position. Accordingly, the first accommodating space 3111 and the second accommodating space 3112 may be formed on both sides of the first guide part 3131, and a connection part 3120 may be formed between the first guide part 3131. there is. The second guide part 3132 may extend a predetermined length from the center of the front side corner. Accordingly, the second guide part 3132 may divide the connection part 3120.

Referring to FIG. 18 , the second plate 3200 may have a predetermined plate shape and may be formed in a rectangular shape as a whole. The second plate 3200 is coupled to the upper portion of the first plate 3100, and thus can close the upper surface of the flow path 3110.

A coupling portion 3210 may be formed in the second plate 3200 . For example, the coupling portion 3210 may be recessed from the lower surface of the second plate 3200 and formed convex upward.

The second plate 3200 may further include an inflow hole 3220 and an outflow hole 3230 . The inlet hole 3220 and the outlet hole 3230 are adjacent to one edge of the second plate 3200 and may be disposed to correspond to the first accommodating space 3111 and the second accommodating space 3112, respectively. An inlet pipe 3620 and an outlet pipe 3630 may be coupled to the inlet hole 3220 and the outlet hole 3230, respectively. Accordingly, the supplied refrigerant may flow into the inlet hole 3220 through the inlet pipe 3620, and the refrigerant may move along the flow path 3110 and be discharged through the outlet hole 3230 and the outlet pipe 3630. can

In addition, rubber packing members 3640 may be inserted between the inlet hole 3220 and the inlet pipe 3620 and between the outlet hole 3230 and the outlet pipe 3630, respectively. Accordingly, the packing member 3640 can prevent the refrigerant from leaking through the inflow hole 3220 or the outflow hole 3230.

Meanwhile, referring to FIGS. 18 and 19 , the cooling fins 3140 may be disposed between the first plate 3100 and the second plate 3200 . In this case, a plurality of cooling fins 3140 may be formed and disposed at predetermined positions in the flow path 3110 . For example, the cooling fins 3140 may be disposed between the guide parts 3130. Each of the cooling fins 3140 may have various lengths corresponding to the shape of the passage 3110 partitioned by the guide part 3130 . In this case, the plurality of cooling fins 3140 may be disposed in the same direction as and perpendicular to the moving direction of the refrigerant. In addition, the cooling fin 3140 is made of a CNT composite material and can be formed in various structures, and its heat dissipation performance can be maximized due to its high thermal conductivity.

Referring to FIG. 17 , the first support part 3300 may be disposed below the first plate 3100 . The first support part 3300 may have a plate shape having a predetermined area. The first support part 3300 may be coupled to the vehicle frame 1 to support the first plate 3100 .

The second support part 3400 may be disposed above the second plate 3200 . The second support part 3400 may have a plate shape having a predetermined area. A battery cell may be seated on the second support part 3400 .

20 is a perspective view of the cooling fin shown in FIG. 19, and FIG. 21 is a front view of the cooling fin shown in FIG.

Referring to FIGS. 20 and 21 , the cooling fin 3140 according to the fourth embodiment of the present invention may include a first protruding member 3141 and a second protruding member 3142 . The cooling fin 3140 has a shape having a plurality of curves, and the first protruding member 3141 and the second protruding member 3142 may protrude upward and downward, respectively. In this case, the cooling fin 3140 may include a communication hole 3144 formed between the first protruding member 3141 and the second protruding member 3142 and extending along the longitudinal direction of the cooling fin 3140 .

Accordingly, when the battery cooling device 3000 places the cooling fins 3140 on the flow path 3110 to couple the first plate 3100 and the second plate 3200 and then introduces the refrigerant into the flow path 3110. , The contact area and flow time of the refrigerant are increased by the first and second protruding members 3142 of the cooling fin 3140, so that the cooling efficiency can be improved.

22 is an exploded perspective view showing a first modified example of a battery cooling device according to a fourth embodiment of the present invention, and FIG. 23 is a perspective view showing a state in which the first plate, inner plate and cooling fins of FIG. 22 are coupled, 24 is a perspective view of the cooling fin shown in FIG. 23, and FIG. 25 is a plan view of the cooling fin shown in FIG.

Referring to FIGS. 22 and 23 , the cooling fins 3160 may be disposed between the first plate 1100 and the second plate 1200 . In this case, a plurality of cooling fins 3160 may be formed and disposed at predetermined positions in the flow path 3110 . For example, the cooling fins 3160 may be disposed between the guide parts 3130. Each of the cooling fins 3160 may have various lengths corresponding to the shape of the passage 3110 partitioned by the guide part 3130 .

Referring to FIGS. 24 and 25 , the cooling fin 3160 according to the first modification of the present invention may include a plurality of unit fins 3160a and 3160b. The unit pins 3160a and 3160b may include a first protruding member 3161 and a second protruding member 3162 . The unit pins 3160a and 3160b have a plurality of curved shapes, and the first protruding member 3161 and the second protruding member 3162 may protrude upward and downward, respectively. For example, the unit pins 3160a and 3160b may be bent multiple times in a "c" shape. In this case, the unit pins 3160a and 3160b may include a communication hole 3164 formed between the first protruding member 3161 and the second protruding member 3162 .

Meanwhile, the cooling fin 3160 may be connected with a plurality of unit fins 3160a and 3160b crossing each other. For example, the first unit fins 3160a and the second unit fins 3160b that cross each other may be repeatedly arranged to form the cooling fins 3160 . As another example, the extending direction of each unit pin 3160a or 3160b may be perpendicular to the moving direction of the refrigerant.

Accordingly, when the battery cooling device 3000 places the cooling fins 3160 on the flow path 3110 to couple the first plate 3100 and the second plate 3200 and then introduces the refrigerant into the flow path 3110. , Cooling efficiency can be improved by increasing the contact area and flow time of the refrigerant by the cooling fins 3160.

26 is an exploded perspective view showing a second modified example of the battery cooling device according to the fourth embodiment of the present invention. 27 is a perspective view illustrating a state in which the first plate, the inner plate, and the cooling fins of FIG. 26 are coupled. 28 is a perspective view of the cooling fin shown in FIG. 27; 29 is a plan view of the cooling fin shown in FIG. 28; 30 is a side view of the cooling fin shown in FIG. 28;

Referring to FIGS. 26 and 27 , the cooling fins 3180 may be disposed between the first plate 1100 and the second plate 1200 . In this case, a plurality of cooling fins 3180 may be formed and disposed at predetermined positions in the flow path 3110 . For example, the cooling fins 3180 may be disposed between the guide parts 3130. Each of the cooling fins 3180 may have various lengths corresponding to the shape of the passage 3110 partitioned by the guide part 3130 .

Referring to FIGS. 28 to 30 , the cooling fin 3180 according to the second modification of the present invention may include a plurality of unit fins 3180a and 3180b. The unit pins 3180a and 3180b may include a first protruding member 3181 and a second protruding member 3182 . The unit pins 3180a and 3180b have a plurality of curved shapes, and the first protruding member 3181 and the second protruding member 3182 may protrude upward and downward, respectively. For example, in the unit pins 3180a and 3180b, the first protruding member 3181 and the second protruding member 3182 may be formed in a trapezoidal shape. In this case, the unit pins 3180a and 3180b may include a communication hole 3184 formed between the first protruding member 3181 and the second protruding member 3182 .

On the other hand, the cooling fin 3180 may be connected with a plurality of unit fins 3180a and 3180b crossed alternately. For example, the first unit fins 3180a and the second unit fins 3180b that cross each other may be repeatedly arranged to form the cooling fins 3180 . As another example, the extending direction of each unit pin 3180a or 3180b may coincide with the moving direction of the refrigerant.

Accordingly, when the battery cooling device 3000 places the cooling fins 3180 on the flow path 3110 to couple the first plate 3100 and the second plate 3200 and then introduces the refrigerant into the flow path 3110. The cooling efficiency can be improved by increasing the contact area and flow time of the refrigerant by the first and second protruding members 3182 of the cooling fin 3180.

31 is a perspective view of a second plate according to a fifth embodiment of the present invention.

Referring to FIG. 31, a second plate 4200 according to a fifth embodiment of the present invention includes a seating plate 4210, a first frame 4220 and a second frame 4230, and is disposed on the first plate. can be combined

The seating plate 4210 may include a first frame 4220 formed along an outer edge, and a second frame 4230 dividing a space inside the first frame 4220 . For example, the seating plate 4210, the first frame 4220, and the second frame 4230 are made of a CNT composite material and may be integrally formed.

The battery 2 may be inserted inside the second plate 4200, seated on the seating plate 4210, and fixed by the second frame 4230. For example, the second frame 4230 may be formed in a lattice shape to partition a space within the first frame 4220, and may serve as a partition wall to separate and block a plurality of batteries 2 to be seated therebetween. .

In addition, a coupling part 4211, an inflow hole 4210a, an outflow hole 4210b, a second fastening hole 4212, and a through part 4213 may be formed on one surface of the seating plate 4210.

The coupling part 4211 may be formed to protrude from one surface of the seating plate 4210 . For example, the coupling portion 4211 may be recessed from the lower surface of the seating plate 4210 and formed convex upward. This coupling part 4211 may be fitted and coupled to the upper surface of the first plate.

The inflow hole 4210a and the outflow hole 4210b may be disposed on one side of the seating plate 4210 . An inlet pipe and an outlet pipe may be coupled to the inlet hole 4210a and the outlet hole 4210b, respectively. Accordingly, the supplied refrigerant may flow into the inlet hole 4210a through the inlet pipe, and the refrigerant may move along the flow path of the first plate and be discharged through the outlet hole 4210b and the outlet pipe.

A plurality of second fastening holes 4212 may be formed in the seating plate 4210 . For example, the second fastening hole 4212 may be formed between the coupling parts 4211 . Fastening members such as rivets and bolts may be connected to the second fastening holes 4212 . Accordingly, after the first plate and the second plate 4200 are stacked, the first plate and the second plate 4200 are passed through the first fastening hole and the second fastening hole 4212 formed in the first plate. ) can be combined.

That is, the second plate 4200 according to the fifth embodiment of the present invention can be manufactured by an injection method by applying a CNT composite material, and accordingly, the seating plate 4210, the first frame 4220 and the second plate 4200 Since the frame 4230 can be integrally molded without the need to separately manufacture, productivity and economic efficiency can be improved by reducing processes and parts.

Although one embodiment of the present invention has been described above, the spirit of the present invention is not limited to the embodiments presented herein, and those skilled in the art who understand the spirit of the present invention may add elements within the scope of the same spirit. However, other embodiments can be easily proposed by means of changes, deletions, additions, etc., but these will also fall within the scope of the present invention.

1: car frame 2: battery
3: fluid supply unit
1000: battery cooler
1100: first plate 1110: euro
1111: first accommodation space 1112: second accommodation space
1115: connection part 1116: first fastening hole
1130: guide part 1140: cooling fin
1141: body 1142: seating member
1143: protruding member 1143a: first protruding member
1143b: second protruding member 1144: communication hole
1200: second plate 1210: coupling part
1211: second fastening hole 1220: inflow hole
1230: outflow hole 1300: first support
1500: gasket 1600: connector
1620: inlet pipe 1630: outlet pipe
1640: packing member
2000: Battery coolers
2100: first plate 2110: euro
2111: first accommodation space 2112: second accommodation space
2115: connection part 2116: first fastening hole
2130: guide part 2140: cooling fin
2141: body 2142: seating member
2142a: first seating member 2142b: second seating member
2143: protruding member 2143a: first protruding member
2143b: second protruding member 2144: communication hole
2200: second plate 2210: coupling part
2211: second fastening hole 2220: inflow hole
2230: outflow hole 2300: first support
2500: gasket 2600: connector
2620: inlet pipe 2630: outlet pipe
2640: packing member
3000: battery cooler
3100: first plate 3101: receiving groove
3102: inner plate 3110: euro
3111: first accommodation space 3112: second accommodation space
3120: connection part 3130: guide part
3131: first guide part 3132: second guide part
3140, 3160, 3180: cooling fins
3140a, 3140b, 3160a, 3160b, 3180a, 3180b: unit pin
3141,3161,3181: first protruding member
3142,3162,3182: second protruding member
3144, 3164, 3184: communication hole
3200: second plate 3210: coupling part
3220: inflow hole 3230: outflow hole
3300: first support
3600: connector 3620: inlet pipe
3630: outflow pipe 3640: packing member
4200: second plate 4210: seating plate
4210a: Inflow hole 4210b: Outflow hole
4211: coupling part 4212: fastening hole
4213: penetration part 4220: first frame
4230: second frame

Claims (11)

A first support connected to the vehicle frame;
a first plate disposed on an upper surface of the first support and having a concave flow path formed on one surface;
a cooling fin connected to an inner surface of the straight section of the passage;
a second plate disposed on an upper surface of the first plate and having an outflow hole and an inflow hole communicating with the flow path; and
A second support portion disposed on an upper surface of the second plate and on which a battery is seated;
The first plate and the second plate are made of a thermally conductive composite material that generates heat by receiving power,
The euro is
Includes a plurality of guides protruding from the upper surface of the passage to guide the direction of the refrigerant;
The cooling fins are
It is disposed between the guide parts adjacent to each other,
The cooling fins are
a body having a plate shape extending a predetermined length, disposed perpendicularly to the upper surface of the passage, and having a height corresponding to the height of the passage;
a seating member having a first seating member and a second seating member that are vertically bent in opposite directions from both ends of the body;
a protruding member protruding from the left or right side of the body; and
It is formed along the longitudinal direction of the body and includes a communication hole adjacent to the protruding member,
The protruding member,
It is formed by partially incising one surface of the body and bending the free end outward,
The protruding member,
A plurality of pieces are spaced apart along the longitudinal direction of the body and are formed by repeatedly bending in different directions,
The protruding member,
a first protruding member bent to the right side of the body by cutting a portion of the body; and
Including a second protruding member bent to the left side of the body by cutting a part of the body,
The communication hole,
The battery cooling device formed by partially cutting the body to form the first protruding member and the second protruding member, while the cut portion of the body is opened. According to claim 1,
The composite material,
polymer matrix; and
A battery cooling device comprising a thermally conductive filler impregnated into the polymer matrix and generating heat when power is supplied. According to claim 1,
The euro is
A battery cooling device including a pair of spaced apart accommodation spaces. According to claim 3,
The first plate,
A battery cooling device comprising a connection portion formed concavely between the pair of accommodating spaces and stepped with the flow path. delete delete delete According to claim 1,
The cooling fins are
A battery cooling device formed by repeatedly arranging repeatedly bent unit pins to be offset from each other. According to claim 1,
The battery cooling device further comprises an inner plate seated inside the first plate and protruding from one surface of a guide portion partitioning the flow path. According to claim 1,
The second plate,
a seating plate on which a plurality of the batteries are seated;
a first frame formed along an edge of the seating plate and having the battery disposed therein; and
A battery cooling device comprising a second frame formed in a lattice shape inside the first frame to space the plurality of batteries apart. According to claim 1,
The first plate and the second plate,
A battery cooling device in which silicon is heat-sealed.

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