KR-20260067225-A - COOLING MODULE AND BATTERY PACK INCLUDING THE SAME

KR20260067225AKR 20260067225 AKR20260067225 AKR 20260067225AKR-20260067225-A

Abstract

The present invention relates to a cooling module, comprising: a supply manifold block formed to distribute cooling water and connected to an inlet pipe formed to allow cooling water to flow in; a collection manifold block connected to a discharge pipe formed to allow cooling water to be discharged, collecting cooling water and delivering it to the discharge pipe; a plurality of first channels spaced apart from each other and including a portion extending in one direction connected to the supply manifold block; a return manifold block connected to each of the plurality of first channels and arranged to change the flow direction of cooling water received from the plurality of first channels; a plurality of second channels connecting the return manifold block and the collection manifold block; and a bypass channel that bypasses the first channel, receives cooling water from the supply manifold block, and delivers cooling water to the return manifold block through a flow path shorter than the first channel.

Inventors

김경모
박종규
김시원
고건우

Assignees

현대자동차주식회사
기아 주식회사

Dates

Publication Date: 20260512
Application Date: 20241105

Claims (17)

A supply manifold block connected to an inlet pipe formed to allow cooling water to flow in and formed to distribute the cooling water; A collection manifold block connected to a discharge pipe formed to discharge the above-mentioned coolant, which collects the coolant and delivers it to the discharge pipe; A plurality of first channels spaced apart from each other, including a portion connected to the supply manifold block and extending in one direction; A return manifold block connected to each of the plurality of first channels and configured to switch the flow direction of the cooling water received from the plurality of first channels; A plurality of second channels connecting the above return manifold block and the above collection manifold block; and A cooling module comprising: a bypass channel that bypasses the first channel, receives the coolant from the supply manifold block, and delivers the coolant to the return manifold block through a path shorter than the first channel.
In paragraph 1, The above bypass channel is, A cooling module disposed between the plurality of first channels in a direction intersecting the above one direction, and extending in the above one direction from the supply manifold block to the return manifold block.
In paragraph 1, The above bypass channel is, In a direction intersecting the above one direction, A cooling module spaced apart from each of the plurality of first channels.
In paragraph 1, The above-mentioned first channel is, A first region connected to the supply manifold block and extending in the one direction; A cooling module comprising: a second region located downstream of the first region with respect to the flow direction of the cooling water and extending in another direction opposite to the first direction.
In paragraph 4, The above-mentioned first channel is, A cooling module further comprising: a third region located downstream of the second region with respect to the flow direction of the cooling water, extending in the one direction and connected to the return manifold block.
In paragraph 5, The above-mentioned first channel is, A first connecting region that connects the first region and the second region and extends in a direction intersecting the one direction; and A cooling module further comprising: a second connecting region that connects the second region and the third region and extends in a direction intersecting the one direction.
In paragraph 1, The above-mentioned first channel is, Channel 1-1 and, With respect to the direction intersecting the above one direction, it includes a first-2 channel positioned further outward than the first-1 channel and spaced apart from the first-1 channel, and A cooling module in which the flow rate of the cooling water distributed from the supply manifold block to the first-2 channel is formed to be greater than the flow rate of the cooling water distributed from the supply manifold block to the first-1 channel.
In Paragraph 7, A first distribution connection pipe connecting the above supply manifold block and the above 1-1 channel; Further comprising a second distribution connection pipe connecting the supply manifold block and the first-second channels; A cooling module in which the number of the second distribution connection pipes is formed to be greater than the number of the first distribution connection pipes.
In Paragraph 7, A first distribution connection pipe connecting the above supply manifold block and the above 1-1 channel; Further comprising a second distribution connection pipe connecting the supply manifold block and the first-second channels; A cooling module in which the cross-sectional area of the second distribution connection pipe is formed to be larger than the cross-sectional area of the first distribution connection pipe.
In Paragraph 7, Each of the above-mentioned 1-1 channel and the above-mentioned 1-2 channel is, It includes a first region connected to the supply manifold block and extending in the one direction, A first distribution connection pipe connecting the above supply manifold block and the above 1-1 channel; and Further comprising a second distribution connection pipe connecting the supply manifold block and the first-second channels; A cooling module in which each of the first distribution connecting pipe and the second distribution connecting pipe is connected at a position offset from the center with respect to the direction intersecting the first area of the first-1 channel and the first area of the first-2 channel.
In Paragraph 10, The first distribution connection pipe is connected to the first-1 channel at an inner side of the center of the direction intersecting the first direction of the first region of the first-1 channel, and The second distribution connection pipe is a cooling module that is connected to the first-2 channel at an outer side of the center of the direction intersecting the first area of the first-2 channel.
In Paragraph 7, The above supply manifold block is, Regarding the direction intersecting the above one direction, A cooling module connected to the bypass channel on the inner side of the first channel,
In paragraph 1, The above return manifold block is, Regarding the direction intersecting the above one direction A cooling module connected to the bypass channel from the inner side of the first channel.
In paragraph 1, Each of the above plurality of second channels is, Regarding the direction intersecting the above one direction, A cooling module disposed on the outer side of the plurality of first channels.
In paragraph 1, The above return manifold block is, Regarding the direction intersecting the above one direction, A cooling module connected to the second channel at an outer side of the first channel.
In paragraph 1, The first channel, the second channel, and the bypass channel are a cooling module formed from an extruded material.
A battery cell stack comprising battery cells that are stacked in one direction and extend in a direction intersecting the one direction; and A base plate that supports the battery cell stack and includes a cooling module inside; comprising The above cooling module is, A supply manifold block connected to an inlet pipe formed to allow cooling water to flow in and formed to distribute the cooling water; A collection manifold block connected to a discharge pipe formed to discharge the above-mentioned coolant, which collects the coolant and delivers it to the discharge pipe; A plurality of first channels spaced apart from each other, including a portion connected to the supply manifold block and extending in the one direction; A return manifold block connected to each of the plurality of first channels and configured to switch the flow direction of the cooling water received from the plurality of first channels; A plurality of second channels connecting the above return manifold block and the above collection manifold block; and A battery pack comprising: a bypass channel that bypasses the first channel, receives the coolant from the supply manifold block, and delivers the coolant to the return manifold block through a path shorter than the first channel.

Description

Cooling module and battery pack including the same The present invention relates to a cooling module and a battery pack including the same. Recently, as awareness of the crisis regarding the environment and the depletion of petroleum resources has increased, research and development of eco-friendly electric vehicles (EVs) is gaining prominence. An electric vehicle is a vehicle that moves using electricity as power and may include a battery pack. The battery pack may include a base plate for supporting a battery module or a battery cell stack formed of a plurality of battery cells. To maintain the performance of battery cells, it is necessary to maintain a constant temperature. Structures for this purpose can be classified into air-cooling, which regulates the temperature of battery cells by circulating air; direct-cooling, which regulates the temperature of battery cells using a refrigerant; and water-cooling, which regulates the temperature of battery modules using water. In dual water-cooling systems, there is a method of cooling battery cells using coolant; however, regarding the structure for forming coolant channels to allow the flow of coolant, the method of forming coolant channels by press forming results in relatively weak rigidity or problems caused by brazing, leading to an increasing need to resolve these issues. In addition, there is a growing need to resolve the problem of reduced cooling performance in water-cooling systems, where temperature variations occur depending on the position of the battery cell in the width direction. FIG. 1 is a perspective view of a pack housing and a battery cell stack according to one embodiment of the present invention. FIG. 2 is an exploded perspective view of a battery pack according to one embodiment of the present invention. FIG. 3 is a bottom perspective view of a pack housing according to one embodiment of the present invention. FIG. 4 is a plan view of a cooling module according to one embodiment of the present invention. FIG. 5 is a diagram showing the flow direction of cooling water flowing through a cooling module according to one embodiment of the present invention. Figure 6 is an enlarged view of part A shown in Figure 4. FIG. 7 is a diagram showing the temperature of the cooling water flowing through a cooling module according to one embodiment of the present invention. Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that in assigning reference numerals to the components of each drawing, the same components are given the same reference numeral whenever possible, even if they are shown in different drawings. Furthermore, in describing the embodiments of the present invention, if it is determined that a detailed description of related known components or functions would hinder understanding of the embodiments of the present invention, such detailed description is omitted. In describing the components of the embodiments of the present invention, terms such as first, second, A, B, (a), (b), etc., may be used. These terms are intended merely to distinguish the components from other components, and the essence, order, or sequence of the components is not limited by these terms. Furthermore, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in this application. Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1 to 7. In the following, the first direction may be the X direction or the direction opposite to the X direction, the second direction may be the Y direction or the direction opposite to the Y direction, and the third direction may be the Z direction or the direction opposite to the Z direction. Here, the first direction may be the length direction of the electric vehicle, and the second direction may be the width direction of the electric vehicle. FIG. 1 is a perspective view of a pack housing and a battery cell stack according to an embodiment of the present invention. FIG. 2 is an exploded perspective view of a battery pack according to an embodiment of the present invention. FIG. 3 is a bottom perspective view of a pack housing according to an embodiment of the present invention. Referring to FIGS. 1 to 3, a battery pack (100) can be mounted inside an electric vehicle to provide power to the electric vehicle. The battery pack (100) may include a battery cell stack (200) and a pack housing (300) that supports the battery cell stack (200). The battery pack (100) may include a pack cover (110) t