KR20230009152A - Muli-layer cooler and apparatus cooling both sides of battery using the same - Google Patents

Abstract

The present invention relates to a multi-layered cooler and a device for cooling both sides of a battery using the same, and more specifically, to a multi-layered cooler capable of simultaneously cooling both the upper and lower sides of a battery by simultaneously supplying a cooling fluid to the upper and lower coolers by connecting the upper cooling cooler and the lower cooling cooler through a jump pipe, and a device for cooling both sides of a battery using the same.

Description

Double layer cooling cooler and battery side cooling device using the same

The present invention relates to a multi-layer cooling cooler and a device for cooling both sides of a battery using the same, and more particularly, an upper cooling cooler and a lower cooling cooler are connected through a jump pipe, thereby supplying cooling fluid to the upper and lower cooling coolers at the same time to cool the battery. It relates to a multi-layer cooling cooler capable of simultaneously cooling both upper and lower surfaces and a cooling device for both sides of a battery using the same.

In general, research on an electric vehicle (EV) or a hybrid electric vehicle (HEV) is being actively conducted in that it is the most likely alternative to solve future automobile pollution and energy problems.

An electric vehicle mainly uses a battery composed of a secondary battery that obtains power by driving an AC or DC motor using power from the battery as a main power source. Here, a battery made of a secondary battery is overheated while power is supplied or charged, and if the overheated battery is not controlled to an appropriate temperature, performance and lifespan of the battery are deteriorated.

As the output of the battery increases and its loading capacity increases, the performance of the battery deteriorates or its lifespan decreases under high load conditions (eg, rapid charging mode or high-speed driving condition). That is, a liquid-cooled heat exchanger to solve this problem is a high-efficiency cooling technology, and is a high-performance heat exchanger (also referred to as a cooler) technology that cools a liquid such as a coolant or a refrigerant by directly or indirectly thermally contacting a battery cell.

The conventionally developed indirect cooling type heat exchanger has a structure in which heat exchangers are disposed at the upper and lower portions of the battery to cool both sides. At this time, the heat generated inside the battery is released by the cooling fluid (cooling water, refrigerant) flowing in the heat exchanger.

1 is a diagram illustrating a conventional battery cooling device. Referring to FIG. 1, the conventional battery cooling device has symmetrical upper and lower flow passages due to pressure loss, refrigerant temperature decrease, and overheating (refrigerant temperature increase) occurring as the cooling fluid flows along the flow path (①→②→③→④). It is common to design At this time, due to the length of the pipe through which the cooling fluid flows, a heat loss with ambient temperature may occur.

In addition, in the case of a conventional upper and lower double-sided cooling heat exchanger, due to the two-phase flow of the cooling fluid, the liquid flows to the lower heat exchanger and the gas flows more to the upper heat exchanger under the influence of gravity, resulting in uneven cooling. In order to prevent such non-uniform cooling, a distributor is used to distribute the cooling fluid evenly to the upper and lower heat exchangers, but design factors to be considered such as the location of the distributor and the diameter of the inner hole of the distributor increase, so design and development costs may be excessively required. For example, in order to solve the distorted distribution caused by gravity, the diameters (D1, D2) entering the upper and lower coolers of the distributor used to solve the distorted distribution are solved by adjusting the flow resistance of the upper and lower coolers by designing them differently or adjusting the position. There are many design factors to be considered for this, and there is a problem that it is impossible to respond to the variable refrigerant flow rate.

Therefore, it is necessary to develop a new battery side cooling heat exchanger capable of solving the above problems and improving the battery side cooling efficiency by designing a new structure and configuration of the upper and lower side heat exchanger.

Korean Patent Publication No. 10-2021-0027862

The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a multi-layer cooling cooler that uniformly cools both sides of a battery by simultaneously supplying cooling fluid to upper and lower coolers through a single channel.

Another object of the present invention is to provide a multi-layer cooling cooler in which the distribution of cooling fluid is easy even with a variable flow rate of the cooling fluid.

Another object of the present invention is to provide an apparatus for cooling both sides of a battery that reduces design factors for cooling both sides of a battery and minimizes heat loss.

A multilayer cooling cooler according to a first embodiment of the present invention includes one or more tubes through which cooling fluid passes; a first header connected to one end of the tube; a second header connected to the other end of the tube; and a jump pipe welded and connected to one or more first headers spaced apart by a predetermined length in the vertical direction.

Here, the battery may be cooled by the cooling fluid flowing into the tube by placing the battery between one or more of the tubes spaced upward and downward.

In the first embodiment, the jump pipe may be composed of a plurality of pipes.

In the first embodiment, the jump pipe may be located at both ends of the first header.

In the first embodiment, the jump pipe may be located in the center of the first header.

In the first embodiment, the second header may include an inlet and an outlet through which the cooling fluid is introduced and discharged.

In the first embodiment, the first header, the second header, and the jump pipe may be composed of pipes having the same diameter.

In the first embodiment, the tube may be composed of a tubular tube having a space therein.

In the first embodiment, the tube may be formed to have a planar cross section.

A multilayer cooling cooler according to a second embodiment of the present invention includes one or more tubes through which cooling fluid passes; a first header connected to one end of the tube; a second header connected to the other end of the tube; and a jump pipe connected to one or more first headers spaced apart by a predetermined length in the vertical direction through a flange.

Here, the battery may be cooled by the cooling fluid flowing into the tube by placing the battery between one or more of the tubes spaced upward and downward.

In the second embodiment, the jump pipe may be detached from the first header through the flange.

In the second embodiment, the flange may include a valve for controlling the amount of the cooling fluid passing through the jump pipe.

In the second embodiment, the jump pipe may be located at both ends of the first header.

In the second embodiment, the jump pipe may be located in the center of the first header.

In the second embodiment, the second header may include an inlet and an outlet through which the cooling fluid is introduced and discharged.

The first header, the second header, and the jump pipe may be composed of pipes having the same diameter.

The multilayer cooling cooler according to the second embodiment of the present invention includes one or more tubes through which cooling fluid passes, a first header connected to one end of the tube, a second header connected to the other end of the tube, and a predetermined length spaced apart in the vertical direction. one or more multi-layer cooling coolers composed of jump pipes connecting one or more of the first headers; and a distributor for distributing the cooling fluid so that the same amount of the cooling fluid is introduced into one or more multi-layer cooling coolers.

Here, one or more of the multilayer cooling coolers are arranged in the extending direction of the first header and the second header, and the battery is positioned between one or more of the tubes spaced upward and downward to the cooling fluid flowing into the tube The battery may be cooled by

In the third embodiment, one or more of the multilayer cooling coolers may be arranged in an extension direction of the first header and the second header.

In the third embodiment, the distributor may be provided with one inlet channel and a plurality of outlet channels.

In the third embodiment, the jump pipe may be located at both ends of the first header.

In the third embodiment, the jump pipe may be located in the center of the first header.

In the third embodiment, the second header may include an inlet and an outlet through which the cooling fluid is introduced and discharged.

In the third embodiment, the distributor may be connected to one or more multilayer cooling coolers through pipes having the same diameter as those of the first header and the second header.

According to the present invention, by simultaneously supplying the cooling fluid to the upper and lower coolers through a single channel, the effect of easily distributing the cooling fluid even at a variable flow rate of the cooling fluid can occur.

In addition, according to the present invention, even if a change in the cooling system occurs, an effect of reducing the development cost of the cooling system with a small design factor may occur.

In addition, according to the present invention, the length of the inlet pipe of the cooling fluid is reduced, thereby minimizing heat loss and improving cooling performance.

1 is a diagram showing a conventional battery cooling device;
2 is a view showing a multi-layer cooling cooler according to a first embodiment of the present invention.
3 is a view showing a multi-layer cooling cooler according to a second embodiment of the present invention.
4 is a diagram illustrating a device for cooling both sides of a battery according to the present invention.

The detailed description of the present invention is intended to completely explain the present invention to those skilled in the art. Throughout the specification, when a part is said to “include” a certain component or to “characterize” a certain structure or shape, this excludes other components or excludes other structures and shapes unless otherwise stated. It does not mean that it does, but it can include other components, structures and shapes.

Since the present invention can apply various transformations and have various embodiments, specific embodiments will be presented and described in detail in the detailed description. However, this is not intended to limit the content of the invention by the examples, and should be understood to include all conversions, equivalents, or substitutes included in the spirit and technical scope of the present invention.

2 is a view showing a multi-layer cooling cooler 100 according to a first embodiment of the present invention. Referring to FIG. 2, the multilayer cooling cooler 100 according to the present invention may be composed of a tube 10, a first header 20, a second header 30, and a jump pipe 40, and upper and lower sides The battery may be cooled by a cooling fluid flowing into the tube 100 by placing the battery between one or more tubes 10 spaced apart from each other.

2(a) and 2(b) are classified according to the connection positions of the first header 20 and the jump pipe 40, which will be described later. FIG. 2(a) is a view showing the multilayer cooling cooler 100 having a structure in which jump pipes 40 are welded to both ends of the first header 10, and FIG. 2(b) shows the jump pipe 40 is a view showing the multi-layer cooling cooler 100 having a structure welded and coupled to the central portion in the extending direction of the first header 10. A description of each component is as follows.

The tube 10 serves to provide a flow space for a cooling fluid to absorb heat from the battery. To perform this role, the tube 10 may be formed of one or more tubular tubes having a certain space therein. Here, the tube 10 may be formed to have a planar cross section so that the cooling fluid can flow over a wider area.

The first header 20 and the second header 30 serve to collectively connect one or more tubes 10, and may be connected to one end and the other end of the tube 10, respectively, in order to perform this role. . Here, the first header 20 and the second header 30 may be configured as pipe tubes having a certain space therein so that an external cooling fluid may flow therein.

In the first embodiment, the first header 20 and the second header 30 may have constant diameters and are connected to the tube 10 in an open state to form the first header 20 and the second header ( The cooling fluid flowing in 30) may flow through one or more tubes 10.

In the first embodiment, the second header 30 may include an inlet through which an external cooling fluid is introduced and an outlet through which the cooling fluid passing through one or more tubes 10 is discharged. Here, the inlet and outlet may be connected to a cooling fluid supply device, a circulation device, and a distribution device.

In the first embodiment, the multilayer cooling cooler 100 according to the present invention flows through one or more tubes 10 and the first header 20 after the cooling fluid flows into the second header 30, and the battery is double-sided up and down. After cooling, it can be discharged from the second header 30 again.

The jump pipe 40 is made up of a plurality and serves to connect one or more first headers 20 spaced apart by a certain length in the direction of extension and in the vertical direction. To perform this role, the jump pipe 40 may be connected to the first header 20 by welding. Here, the jump pipe 40 may be configured as a pipe tube having a certain space therein so that cooling fluid may flow to one or more connected first headers 20 . In addition, a plurality of jump pipes 40 may be configured so that a large amount of cooling fluid can smoothly flow to one or more connected first headers 20 .

In the first embodiment, the jump pipe 40 is connected while being located at both ends of the first header 20, thereby forming a rectangular circulation pipe together with the first header 20.

In the first embodiment, the jump pipe 40 is connected while being located at the center in the extension direction of the first header 20, so that the negative pressure formed inside due to the suction force of the cooling fluid is connected to the first header 20. It can be evenly distributed in one or more tubes (10).

In the first embodiment, the first header 20, the second header 30, and the jump pipe 40 are composed of pipes having the same diameter, so that the cooling fluid flows through the first header 20 and the second header 30. And it can move at the same flow rate without a bottleneck between the jump pipes 40.

3 is a view showing a multi-layer cooling cooler 100 according to another embodiment of the present invention. Referring to FIG. 3 , it can be confirmed that in the multilayer cooling cooler 100 according to the second embodiment of the present invention, the jump pipe 40 is connected to the first header 20 through the flange 41 .

3(a) and 3(b) may be classified according to the connection positions of the first header 20 and the jump pipe 40. FIG. 3(a) is a view showing the multilayer cooling cooler 100 having a structure in which jump pipes 40 are coupled to both ends of the first header 10 through flanges, and FIG. 3(b) shows the jump pipes 40 ) is a view showing the multi-layer cooling cooler 100 having a structure coupled through a flange to the center in the extension direction of the first header 10.

The flange 41 is a coupling member for connecting two pipes, and the jump pipe 40 and the first header 20 can be attached and detached through the flange 41 . In the multilayer cooling cooler 100 according to the second embodiment of the present invention, the jump pipe 40 and the first header 20 can be attached and detached using the flange 41, and the jump pipe 40 passes through Since the amount of cooling fluid can be controlled, convenience in use and management of the multilayer cooling cooler 100 can be improved.

Since other configurations of the multilayer cooling cooler 100 according to the second embodiment of the present invention are the same as those of the first embodiment except for the flange 41, descriptions of other configurations are the same as those described above.

4 is a diagram showing an apparatus 1000 for cooling both sides of a battery according to the present invention. Referring to FIG. 4 , in the battery side cooling device 1000 according to the present invention, one or more multi-layer cooling coolers 100 are arranged in the extending direction of the first header 20 and the second header 30 and move upward and downward. The battery may be cooled by a cooling fluid flowing into the tube 10 by placing the battery between one or more spaced tubes 10 .

4(a) and 4(b) may be classified according to the connection positions of the first header 20 and the jump pipe 40 included in the at least one multi-layer cooling cooler 100. FIG. 4 (a) is a view showing a battery-side cooling device 1000 in which jump pipes 40 included in one or more multi-layer cooling coolers 100 are coupled to both ends of the first header 10, and FIG. 4 ( b) is a view showing the battery side cooling device 1000 in which the jump pipe 40 included in one or more multi-layer cooling coolers 100 is coupled to the central portion in the extension direction of the first header 10.

Referring to FIG. 4 , the device for cooling both sides of the battery 1000 may include a multi-layer cooling cooler 100 and a distributor 200 . A description of the multilayer cooling cooler 100 is the same as the above description, and a description of the distributor 200 is as follows.

The distributor 200 serves to distribute the cooling fluid so that the same amount of cooling fluid flows into one or more multi-layer cooling coolers 100, and for this purpose, the distributor 200 is connected to one or more multi-layer cooling coolers 100 and pipes. each can be connected. Specifically, the distributor 200 is provided with one inlet channel connected to the cooling fluid supply device through one channel to introduce the cooling fluid into the inside, and a plurality of discharge channels for discharging the introduced cooling fluid into one or more channels. .

In addition, the distributor 200 is connected to one or more multi-layer cooling coolers 100 through pipes having the same diameter as the first header 20 and the second header 30, so that the cooling fluid passing through the distributor 200 is With the multilayer cooling cooler 100, it can move at the same flow rate without a bottleneck.

Referring to FIG. 4, although the battery cooling device 1000 is composed only of the multi-layer cooling cooler 100 according to the first embodiment of the present invention, the first header 20 and the jump pipe 40 are provided through the flange. By being connected to each other, it may be configured as a multi-layer cooling cooler 100 according to the second embodiment.

Although described with reference to the preferred embodiments of the present invention, those skilled in the art will variously modify and change the present invention within the scope not departing from the spirit and scope of the present invention described in the claims below. You will understand that it can be done.

1000: battery side cooling system
100: double layer cooling cooler
200: divider
10: tube
20: first header
30: second header
31: inlet 32: outlet
40: jump pipe
41: flange

Claims (22)

one or more tubes through which cooling fluid passes;
a first header connected to one end of the tube;
a second header connected to the other end of the tube; and
A jump pipe welded and connected to one or more first headers spaced apart by a predetermined length in the vertical direction;
The battery is cooled by the cooling fluid flowing into the tube by placing the battery between one or more of the tubes spaced upward and downward.
Characterized by a multi-layer cooling cooler.
According to claim 1,
The jump pipe,
composed of multiple pipes
Characterized by a multi-layer cooling cooler.
According to claim 1,
The jump pipe,
Being located at both ends of the first header
Characterized by a multi-layer cooling cooler.
According to claim 1,
The jump pipe,
located in the center of the first header
Characterized by a multi-layer cooling cooler.
According to claim 1,
The second header,
Including an inlet and an outlet through which the cooling fluid is introduced and discharged
Characterized by a multi-layer cooling cooler.
According to claim 1,
The first header, the second header, and the jump pipe,
Consisting of pipes of the same diameter
Characterized by a multi-layer cooling cooler.
According to claim 1,
the tube,
Consisting of a tubular tube with a space inside
Characterized by a multi-layer cooling cooler.
According to claim 7,
the tube,
Formed so that the cross section has a planar shape
Characterized by a multi-layer cooling cooler.
one or more tubes through which cooling fluid passes;
a first header connected to one end of the tube;
a second header connected to the other end of the tube; and
Including; a jump pipe connected to one or more of the first headers spaced apart by a predetermined length in the vertical direction through a flange,
The battery is cooled by the cooling fluid flowing into the tube by placing the battery between one or more of the tubes spaced upward and downward.
Characterized by a multi-layer cooling cooler.
According to claim 9,
The jump pipe,
Being detached from the first header through the flange
Characterized by a multi-layer cooling cooler.
According to claim 9,
The flange,
And a valve for controlling the amount of the cooling fluid passing through the jump pipe.
Characterized by a multi-layer cooling cooler.
According to claim 9,
The jump pipe,
Being located at both ends of the first header
Characterized by a multi-layer cooling cooler.
According to claim 9,
The jump pipe,
located in the center of the first header
Characterized by a multi-layer cooling cooler.
According to claim 9,
The second header,
Including an inlet and an outlet through which the cooling fluid is introduced and discharged
Characterized by a multi-layer cooling cooler.
According to claim 9,
The first header, the second header, and the jump pipe,
Consisting of pipes of the same diameter
Characterized by a multi-layer cooling cooler.
It consists of one or more tubes through which cooling fluid passes, a first header connected to one end of the tube, a second header connected to the other end of the tube, and a jump pipe connecting one or more first headers spaced apart by a predetermined length in the vertical direction. One or more multi-layer cooling coolers; and
A distributor for distributing the cooling fluid so that the same amount of the cooling fluid flows into at least one of the multi-layer cooling coolers; includes,
At least one multilayer cooling cooler is arranged in the extension direction of the first header and the second header, and the battery is positioned between the at least one tube spaced upward and downward, by the cooling fluid flowing into the tube. battery cooling down
Characterized by a battery side cooling device.
According to claim 16,
At least one of the multilayer cooling coolers,
Arranged in the extension direction of the first header and the second header
Characterized by a battery side cooling device.
According to claim 16,
the distributor,
Equipped with one inlet channel and a plurality of outlet channels
Characterized by a battery side cooling device.
According to claim 16,
The jump pipe,
Being located at both ends of the first header
Characterized by a battery side cooling device.
According to claim 16,
The jump pipe,
located in the center of the first header
Characterized by a battery side cooling device.
According to claim 16,
The second header,
Including an inlet and an outlet through which the cooling fluid is introduced and discharged
Characterized by a battery side cooling device.
According to claim 16,
the distributor,
Connected to one or more multilayer cooling coolers through pipes having the same diameter as the first header and the second header
Characterized by a battery side cooling device.

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