COOLING MODULE AND BATTERY PACK THAT FEATURES THIS

Abstract

A cooling module comprising: an inlet distribution block (430) connected to an inlet line (420) into which cooling water is introduced and which distributes the cooling water; a collection distribution block (600) connected to an outlet line (630) from which the cooling water is discharged and which collects the cooling water and supplies it to the outlet line (630); a plurality of first channels (450) having a section connected to the inlet distribution block (430); a return distribution block (470) connected to the plurality of first channels (450) and changing the flow direction of the cooling water supplied by the plurality of first channels (450); a plurality of second channels (490) connecting the return distribution block (470) and the collection distribution block (600); and a bypass channel (500) bypassing the first channels. the cooling water is taken from the inlet distributor block and the cooling water passes through a passage,which is shorter than the first channels, leads to the return distribution block (470).

Description

TECHNICAL AREA

[0001] The present disclosure relates to a cooling module and a battery pack comprising this module.

[0002] In recent years, research and development in the field of environmentally friendly electric vehicles has been accelerated due to increasing environmental awareness and the scarcity of oil resources.

[0003] An electric vehicle, which is a vehicle powered by electricity, may have a battery pack. The battery pack may have a base plate for holding a battery module or a battery cell stack containing a plurality of battery cells.

[0004] It is necessary to maintain a predetermined temperature for the performance of the battery cells, and a structure for this purpose can be classified into an air-cooling type, which regulates the temperature of the battery cells by circulating air, a direct-cooling type, which regulates the temperature of the battery cells using a refrigerant, and a water-cooling type, which regulates the temperature of the battery module using water.

[0005] In water-cooled batteries, a method is used to cool the battery cells with cooling water. When forming a cooling water channel through which the cooling water flows, a method using press molding has the problem of relatively low stiffness and a soldering-related issue, which is why there is a growing need to solve these problems.

[0006] Furthermore, with water cooling, there is the problem that the cooling performance of the battery cells deteriorates due to temperature differences across the width of the battery cells, which is why there is an increasing need to solve this problem. BRIEF EXPLANATION

[0007] The present disclosure was made to solve the aforementioned problems that arise in the related technique, while retaining the benefits obtained through the related technique unchanged.

[0008] One aspect of the present disclosure relates to a cooling module for preventing a deterioration of the cooling performance of battery cells by reducing a temperature difference depending on the positions in the lateral direction of the battery cells and a battery pack comprising the cooling module.

[0009] Another aspect of the present disclosure relates to a cooling module which is designed to be manufactured using an extrusion die or extrusion dies instead of a compression mold, and a battery pack which includes the cooling module.

[0010] The technical problems to be solved by the present disclosure are not limited to the problems mentioned above, and all other technical problems not mentioned here will be clearly understandable to the person skilled in the art to whom the present disclosure applies from the following description.

[0011] According to one aspect of the present disclosure, a cooling module comprises an inlet distribution block connected to an inlet line into which cooling water is introduced and which distributes the cooling water, a collection distribution block connected to an outlet line from which the cooling water is discharged and which collects the cooling water and feeds it to the outlet line, a plurality of first channels which (e.g.(each) have a section connected to the inlet distributor block and extending in one direction, with the majority of first channels spaced apart from each other, a return distributor block connected to the majority of first channels and changing the flow direction of the cooling water supplied by the majority of first channels, a majority of second channels connecting the return distributor block and the collection distributor block, and a bypass channel bypassing the majority of first channels, receiving the cooling water from the inlet distributor block and supplying the cooling water to the return distributor block via a passage (e.g., fluid passage) that is shorter than the majority of first channels.

[0012] For example, the bypass channel can be arranged in one direction perpendicular to one direction between the majority of first channels and extend in one direction from the inlet distribution block to the return distribution block.

[0013] For example, the bypass channel can be spaced away from the majority of the first channels in a direction that crosses that direction.

[0014] For example, each of the first channels can have a first section connected to the inlet distributor block and extending in one direction, and a second section located downstream of the first section in the direction of flow of the cooling water and extending in a direction opposite to that one direction.

[0015] For example, the first channel may also have a third area which is arranged downstream of the second area in the direction of flow of the cooling water and is connected to the return manifold block and extends in one direction.

[0016] For example, the first channel may have a first connecting area that connects the first area and the second area and extends in a direction intersecting one direction, and a second connecting area that connects the second area and the third area and extends in a direction intersecting one direction.

[0017] For example, the majority of first channels may have a first-first channel and a first-second channel, which is arranged in a direction crossing one direction outwards (e.g. in the vehicle width direction) of the first-first channel and at a distance from the first-first channel, and a flow rate of the cooling water distributed from the inlet distributor block to the first-second channel may be greater than a flow rate of the cooling water distributed from the inlet distributor block to the first-first channel.

[0018] For example, the cooling module may have at least one first distribution connection line connecting the inlet distribution block and the first-first channel, and at least one second distribution connection line connecting the inlet distribution block and the first-second channel, and the number of at least one second distribution connection line may be greater than the number of at least one first distribution connection line.

[0019] For example, the cooling module may have a first distribution connection line that connects the inlet distribution block and the first-first channel, and a second distribution connection line that connects the inlet distribution block and the first-second channel, and a cross-sectional area of ​​the second distribution connection line may be larger than a cross-sectional area of ​​the first distribution connection line.

[0020] For example, each of the first-first channel and the first-second channel can have a first section connected to the inlet manifold block and extending in one direction. The cooling module can further have a first manifold connecting line linking the inlet manifold block and the first-first channel, and a second manifold connecting line linking the inlet manifold block and the first-second channel. The first manifold connecting line and the second manifold connecting line can be connected at positions offset from a midpoint of the first section of the first-first channel and a midpoint of the first section of the first-second channel in the direction that intersects the one direction.

[0021] For example, the first distributor link line can be connected to the first-first channel at a position in the direction that crosses one direction, inside the central section of the first area of ​​the first-first channel, and the second distributor link line can be connected to the first-second channel at a position in the direction that crosses one direction, outside the central section of the first area of ​​the first-second channel.

[0022] For example, the inlet distribution block can be connected to the bypass channel at a position in the direction that crosses one direction, inwards of the majority of first channels.

[0023] For example, the return manifold block can be connected to the bypass channel at a position in a direction that crosses one direction, inwards of the majority of first channels.

[0024] For example, each of the second channels can be arranged in a direction perpendicular to the direction outwards of the majority of first channels.

[0025] For example, the return distribution block can be connected to the majority of second channels at a position in a direction that crosses one direction, outside the majority of first channels.

[0026] For example, the majority of first channels, the majority of second channels, and the bypass channel can be made of an extruded material.

[0027] According to another aspect of the present disclosure, a battery pack comprises a battery cell stack, the battery cells being stacked in one direction and extending in a direction intersecting that direction, and a base plate supporting the battery cell stack and incorporating a cooling module. The cooling module comprises an inlet distributor block connected to an inlet line into which cooling water is introduced and which distributes the cooling water, a collection distributor block connected to an outlet line from which the cooling water is discharged and which collects the cooling water and feeds it to the outlet line, a plurality of first channels having a section connected to the inlet distributor block and extending in one direction, the plurality of first channels being spaced apart from one another, and a return distributor block.which is connected to the majority of first channels and changes the flow direction of the cooling water supplied by the majority of first channels, a majority of second channels connecting the return manifold block and the collection manifold block, and has a bypass channel that bypasses the majority of first channels, receives the cooling water from the supply manifold block and supplies the cooling water to the return manifold block through a passage (e.g., channel) that is shorter than the majority of first channels.

[0028] For example, the bypass channel between the majority of first channels can be arranged in a direction that crosses one direction, and can extend in one direction from the inlet distribution block to the return distribution block.

[0029] For example, the bypass channel can be spaced apart from the majority of first channels in a direction that crosses the one direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The foregoing and other objectives, features and advantages of the present disclosure will become more apparent from the following detailed description in conjunction with the accompanying drawings: Fig. Figure 1 is a perspective view of a pack housing and battery cell stacks according to an exemplary embodiment of the present disclosure, Fig. Figure 2 is a perspective exploded view of a battery pack according to an exemplary embodiment of the present disclosure, Fig. Figure 3 is a perspective bottom view of the packaging housing according to an exemplary embodiment of the present disclosure, Fig. Figure 4 is a top view of a cooling module according to an exemplary embodiment of the present disclosure, Fig. Figure 5 is a view showing by way of example a flow direction of cooling water which flows through the cooling module according to an exemplary embodiment of the present disclosure, Fig. 6 is an enlarged view of the in Fig. 4 shown in section A, and Fig. Figure 7 is a view showing by way of example the temperature of the cooling water flowing through the cooling module according to an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION

[0031] In the following, various exemplary embodiments of the present disclosure are described in detail with reference to the exemplary drawings. When adding reference numerals to the components of each drawing, it should be noted that the identical or equivalent component is designated by the same reference numeral, even if it is shown in other drawings. In describing the exemplary embodiments of the present disclosure, a detailed description of known features or functions is omitted in order not to unnecessarily obscure the core of the present disclosure.

[0032] In describing components of the exemplary embodiment according to the present disclosure, terms such as "first...", "second...", "A", "B", "(a)", "(b)", and the like may be used. These terms serve only to distinguish one component from another and do not restrict the type, sequence, or arrangement of the components. Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meanings as they are generally understood by a person skilled in the art in the field of the present disclosure.Terms as defined in a general dictionary are to be interpreted as having the same meanings as the contextual meanings in the relevant field and are not to be interpreted as having ideal or overly formal meanings unless this is clearly defined in the present application.

[0033] In the following, embodiments of the present disclosure are described with reference to the Fig. Sections 1 to 7 are described in detail. A first direction can be an X-direction or a direction opposite to the X-direction, a second direction can be a Y-direction or a direction opposite to the Y-direction, and a third direction can be a Z-direction or a direction opposite to the Z-direction. The first direction can be the overall longitudinal direction of an electric vehicle, and the second direction can be the latitude direction of the electric vehicle.

[0034] Fig. Figure 1 is a perspective view of a pack housing and battery cell stacks according to an exemplary embodiment of the present disclosure. Fig. Figure 2 is a perspective exploded view of a battery pack according to an exemplary embodiment of the present disclosure. Fig. Figure 3 is a perspective bottom view of the packaging housing according to an exemplary embodiment of the present disclosure.

[0035] With reference to the Fig. The battery pack 100 can be installed in the electric vehicle in positions 1 to 3 and can supply energy or electricity to the electric vehicle. The battery pack 100 can comprise the battery cell stacks 200 and the pack housing 300, which supports the battery cell stacks 200.

[0036] The battery pack 100 can have a pack cover 110 that covers areas of the battery cell stacks 200 that are oriented to one side in the third direction (in direction Z), as well as an electronic module 120 that is connected to the battery cell stacks 200.

[0037] Each of the battery cell stacks 200 can have a plurality of battery cells stacked in the first direction (the X direction or the direction opposite to the X direction) and extending in the second direction (the Y direction or the direction opposite to the Y direction). In contrast to the in Fig. However, in the embodiments shown, three battery cell stacks of 200 (or more or less) can be arranged in the second direction (the Y direction or the direction opposite to the Y direction).

[0038] The pack housing 300 can have side elements 310 arranged on opposite sides of the battery cell stacks 200 in the second direction, a front cover 320 covering areas of the battery cell stacks 200 facing to one side in the first direction (in direction X), and a rear cover 330 covering areas of the battery cell stacks 200 facing to an opposite side in the first direction (pointing in the direction opposite to the X direction).

[0039] The pack housing 300 can have transverse elements 340, which are provided between the battery cell stacks 200 and support the battery cell stacks 200. The transverse elements 340 can have first transverse elements 350 extending in the first direction and second transverse elements 360 extending in the second direction.

[0040] The pack housing 300 can have a base plate 400 that supports the battery cell stacks 200. The base plate 400 can have a cooling module 410 inside it. The cooling module 410 can have channels through which cooling water flows.

[0041] Fig. Figure 4 is a top view of the cooling module according to an exemplary embodiment of the previous disclosure. Fig. Figure 5 is a view showing by way of example a flow direction of cooling water flowing through the cooling module according to an exemplary embodiment of the present disclosure. Fig. 6 is an enlarged view of the in Fig. 4 shown in section A.

[0042] With reference to the Fig. 4 to 6, the cooling module 410 can have an inlet line 420, an inlet distributor block 430, a plurality of first channels 450, a return distributor block 470, a plurality of second channels 490, a bypass channel 500, a collector distributor block 600 and an outlet line 630.

[0043] In addition, the cooling module 410 can have distributor connection lines 440, first and second return connection lines 460 and 480, a bypass inlet line 510, a bypass outlet line 520 and collector connection lines 620.

[0044] The inlet line 420 can be a line (e.g. a pipe) through which the cooling water is introduced into the base plate 400 (see Fig. 2) The inlet line 420 can direct the cooling water introduced from outside the cooling module 410 to the inlet distributor block 430.

[0045] The inlet distribution block 430 can be connected to the inlet line 420 and extend in the second direction to distribute the cooling water introduced from the inlet line 420 to the majority of first channels 450. The inlet distribution block 430 can distribute the cooling water to the first channels 450 via the distribution connecting lines 440.

[0046] The distribution connection lines 440 can connect the inlet distribution block 430 and the first channels 450.

[0047] The majority of the first channels 450 can be spaced apart in the second direction and connected to the inlet distribution block 430. The first channels 450 can have a section (e.g., channel section) extending in the first direction. The first channels 450 can be passageways to receive cooling water from the inlet distribution block 430 and allow the cooling water to flow to the return distribution block 470.

[0048] The cooling water can lower the temperature of the battery cell stacks 200 as it flows through the first channels 450. Accordingly, the temperature of the cooling water is lower the closer it is to the inlet line 420, and higher the closer it is to the return manifold block 470.

[0049] The majority of first channels 450 can have a pair of first-first channels 451 and a pair of first-second channels 452. The cooling water flowing through the first-first channels 451 and the cooling water flowing through the first-second channels 452 must not be mixed.

[0050] To achieve this, the first-first channels 451 and the first-second channels 452 can be spaced apart in the second direction. The pair of first-first channels 451 can be positioned inside / between the pair of first-second channels 452 in the second direction. The pair of first-second channels 452 can be positioned outside the pair of first-first channels 451 in the second direction.

[0051] The first channels 451 and the first channels 452 can all be connected to the inlet distribution block 430 via the distribution connection lines 440. As shown in Fig. As shown in Figure 6, each of the distribution connection lines 440 can have first distribution connection lines (e.g., inlet connection passages) 441, which connect the inlet distribution block 430 and the first-first channel 451, and second distribution connection lines (e.g., inlet connection passages) 442, which connect the inlet distribution block 430 and the first-second channel 452.

[0052] Since the first channels 451 are closer to the inlet line 420 than the first channels 452, the pressure of the cooling water introduced into the first channels 451 can be higher than the pressure of the cooling water introduced into the first channels 452 if the number of first distributor connecting lines 441 is equal to the number of second distributor connecting lines 442. That is, the flow rate of the cooling water introduced into the first channels 451 can be greater than the flow rate of the cooling water introduced into the first channels 452.

[0053] In the present case, the battery cell stacks 200, which are arranged in the second direction in the central area of ​​the packing housing 300, can become overcooled. To prevent this, the flow rate of the cooling water distributed from the inlet distributor block 430 to the first-second channels 452 can be greater than the flow rate of the cooling water distributed from the inlet distributor block 430 to the first-first channels 451.

[0054] This means that the number of second distribution connection lines 442 can be greater than the number of first distribution connection lines 441. For example, the number of second distribution connection lines 442 connecting the inlet distribution block 430 and each of the first-second channels 452 can be three, and the number of first distribution connection lines 441 connecting the inlet distribution block 430 and each of the first-first channels 451 can be two. However, the present disclosure is not limited to this, and it is sufficient if the number of second distribution connection lines 442 is greater than the number of first distribution connection lines 441.

[0055] Alternatively, the number of second distributor connection lines 442 and the number of first distributor connection lines 441 can be the same, and the cross-sectional area (e.g. flow cross-sectional area) of the second distributor connection lines 442 can be larger than the cross-sectional area of ​​the first distributor connection lines 441.

[0056] As in Fig. As shown in Figure 5, the first-first channel 451 can have a first area 451a, a first connecting area 451b, a second area 451c, a second connecting area 451d and a third area 451e.

[0057] The first section 451a of the first channel 451 can be a section connected to the inlet distributor block 430 and extending in the first direction (opposite the X direction) to the opposite side. The second section 451c of the first channel 451 can be a section located downstream of the first section 451a with respect to the flow direction of the cooling water of the first channel 451 and extending to one side in the first direction (in the X direction). The third section 451e of the first channel 451 can be a section located downstream of the second section 451c of the first channel 451 and extending in the first direction (opposite the X direction) to the opposite side. The third section 451e of the first channel 451 can be connected to the return distributor block 470.

[0058] The first connecting area 451b of the first-first channel 451 can be a section that connects the first area 451a of the first-first channel 451 and the second area 451c of the first-first channel 451 and extends inwards in the second direction.

[0059] The second connecting area 451d of the first-first channel 451 can be a section that connects the second area 451c of the first-first channel 451 and the third area 451e of the first-first channel 451 and extends inwards in the second direction.

[0060] Similar to the first-first channel 451, the first-second channel 452 can have a first area 452a, a first connecting area 452b, a second area 452c, a second connecting area 452d and a third area 452e.

[0061] The first section 452a of the first-second channel 452 can be a section connected to the inlet distributor block 430 and extending in the first direction (opposite the X direction) to the opposite side. The second section 452c of the first-second channel 452 can be a section located downstream of the first section 452a with respect to the flow direction of the cooling water in the first-second channel 452 and extending to one side in the first direction (in the X direction). The third section 452e of the first-second channel 452 can be a section located downstream of the second section 452c of the first-second channel 452 and extending to the opposite side in the first direction (opposite the X direction). The third section 452e of the first-second channel 452 can be connected to the return distributor block 470.

[0062] The first connecting area 452b of the first-second channel 452 can be a section that connects the first area 452a of the first-second channel 452 and the second area 452c of the first-second channel 452 and extends outwards in the second direction.

[0063] The second connecting area 452d of the first-second channel 452 can be a section that connects the second area 452c of the first-second channel 452 and the third area 452e of the first-second channel 452 and extends outwards in the second direction.

[0064] As described above, the majority of the first channels 450 can be configured in a meandering shape. The reason for the first channels 450 being configured in a meandering shape is to increase the flow duration (residence time) of the cooling water flowing through the first channels 450 and to increase the surface area of ​​the first channels 450 by making the passage through the first channels 450 longer. Accordingly, the battery cell stacks 200 (see Fig. 1), which are arranged on one side of the first channels 450 in the third direction (in the Z direction), are cooled for a relatively long time when the cooling water flows through the first channels 450.

[0065] As in Fig. As shown in Figure 6, the first distributor connection lines 441 and the second distributor connection lines 442 can be connected or arranged at positions that are offset in the second direction (the Y-direction or the direction opposite to the Y-direction) relative to the middle section of the first area 451a of the first-first channel 451 and the middle section of the first area 452a of the first-second channel 452.

[0066] This can be provided for a section in which the velocity of the cooling water introduced into the first sections 451a and 452a of the first-first and first-second channel 451 and 452 is instantaneously zero, because the temperature of the cooling water flowing through the first sections 451a and 452a of the first-first and first-second channel 451 and 452 is lower than the temperature of the cooling water flowing through the other sections of the first-first and first-second channel 451 and 452.

[0067] In other words, since the first distributor connecting lines 441 and the second distributor connecting lines 442 are connected to positions that are offset in the second direction (the Y-direction or the direction opposite to the Y-direction) from the middle section of the first area 451a of the first channel 451 and the middle section of the first area 452a of the second channel 452, the flow velocity of the cooling water in the sections below the first areas 451a and 452a of the first-first and first-second channels 451 and 452, which are not connected to the first distributor connecting lines 441 and the second distributor connecting lines 442, may be delayed or locally zero.

[0068] This design can prevent undercooling of the battery cell stacks 200, which are cooled by the first areas 451a and 452a of the first-first and first-second channels 451 and 452 under the battery cell stacks 200 which are mounted in the housing 300.

[0069] More precisely, the first distribution connection lines 441 can be connected to the first channel 451 at a position inwards of the central section of the first area 451a of the first-first channel 451 in the second direction. The second distribution connection lines 442 can be connected to the first-second channel 452 at a position outside the central section of the first area 452a of the first-second channel 452 in the second direction.

[0070] The first distribution connecting lines 441 and the second distribution connecting lines 442 can be spaced as far apart as possible in the second direction. This serves to increase the flow rate of the cooling water flowing through a section of the first area 451a of the first-first channel 451 and a section of the first area 452a of the first-second channel 452, which are spaced apart, to be greater than the flow rate of the cooling water flowing through a section of the first area 451a of the first-first channel 451 and a section of the first area 452a of the first-second channel 452, which are adjacent to each other.

[0071] Due to the intended design, undercooling of the battery cell stack 200, which is located adjacent to the inlet line 420 under the battery cell stacks 200 attached in the packaging housing 300, can be prevented.

[0072] Referring to the Fig. 4 and Fig. 5. The return distributor block 470 can be connected to the majority of first channels 450 and change the flow direction of the cooling water supplied by the majority of first channels 450.

[0073] The return manifold block 470 can receive cooling water from the first channels 450 and return it to the majority of the second channels 490. The return manifold block 470 must extend in the second direction, as it must be connected to both the first channels 450 and the second channels 490.

[0074] The second channels 490 can connect the return manifold block 470 and the manifold block 600. The second channels 490 can be components arranged in the second direction outwards from the first channels 450 and cause the cooling water supplied from the return manifold block 470 to flow to the manifold block 600.

[0075] The reason the second channels 490 are arranged outwards in the second direction from the first channels 450 is to reduce a temperature difference between the first channels 450 and the second channels 490 in the second direction.

[0076] Since the cooling water flowing through the first channels 450 is the cooling water that has just been introduced into the cooling module 410 via the inlet line 420, the temperature of the cooling water flowing through the first channels 450 can be lower than the temperature of the cooling water flowing through the second channels 490.

[0077] Meanwhile, the cooling water flowing through the second channels 490, which are arranged in the second direction outwards from the first channels 450, may be more affected by the outside air than the cooling water flowing through the first channels 450.

[0078] Accordingly, even if the cooling water flowing through the second channels 490 has a higher temperature than the cooling water flowing through the first channels 450, the cooling water flowing through the second channels 490 can exchange heat with the outside air, thereby reducing a temperature difference depending on the positions of the battery cell stacks 200 in the second direction compared to the structure in which the first channels are arranged outside the second channels in the second direction.

[0079] The second channels 490 can be provided in pairs, and each of the second channels 490 can be configured with, for example, three (or more or fewer) parallel channels. The second channels 490 can all extend in the first direction (in the X direction) from the return distribution block 470 to the manifold distribution block 600 in one direction.

[0080] The manifold block 600 can collect the cooling water from the cooling module 410. The manifold block 600 can be connected to the outlet line 630, from which the cooling water is discharged, and can feed the collected cooling water to the outlet line 630.

[0081] The distribution block 600 can be connected to the second channels 490 via the connecting lines 620. Control blocks 610 can be installed between the distribution block 600 and the second channels 490.

[0082] The guide distributor blocks 610 are set up as buffers to enable smooth collection of the cooling water in the collection distributor block 600.

[0083] The cooling water recovered through the second channels 490 may not be collected directly into the manifold block 600, but rather buffered in the guide manifold blocks 610 and collected into the manifold block 600 at a reduced flow velocity.

[0084] The distribution block 600 can be longer than the supply distribution block 430. The distribution block 600 can be connected to the second channels 490 at positions located away from the supply distribution block 430 in the second direction.

[0085] Meanwhile, the cooling module 410 may not be able to sufficiently reduce the temperature difference depending on the positions of the battery cell stacks 200 in the second direction using only the first channels 450 and the second channels 490. This is because, as described above, the battery cell stacks 200 located in the center of the pack housing 300 between the battery cell stacks 200 are less affected by the outside air.

[0086] Since the performance of the battery cells deteriorates when there is a temperature difference between the battery cell stacks 200 in the second direction, the cooling module 410 according to an exemplary embodiment of the present disclosure may further comprise the bypass channel 500, which bypasses the first channels 450, receives the cooling water from the inlet distributor block 430 and supplies the cooling water to the return distributor block 470 through a passage that is shorter than the first channels 450.

[0087] The bypass channel 500 can be arranged between the majority of first channels 450 in the second direction to cool areas of the battery cell stack 200 that are located inwards in the second direction (e.g. in the middle).

[0088] The bypass channel 500 can be spaced apart from the majority of the first channels 450 in the second direction. The bypass channel 500 can be positioned between the pair of first-first channels 451, in order to be spaced apart from the first-first channels 451. The cooling water flowing through the bypass channel 500 cannot / should not mix with the cooling water flowing through the first-first and first-second channels 451 and 452.

[0089] Since the bypass channel 500 is designed as a passage that is shorter than the first channels 450, the temperature of the cooling water flowing through the bypass channel 500 can be lower than the temperature of the cooling water flowing through the first channels 450.

[0090] In contrast to the first channels 450, the bypass channel 500 can only extend in the first direction (only in the direction opposite to the X-direction) from the inlet distributor block 430 to the return distributor block 470.

[0091] The bypass channel 500 can be connected to the inlet distributor block 430 via the bypass inlet line 510 and can be connected to the return distributor block 470 via the bypass outlet line 520.

[0092] The inlet distribution block 430 and the return distribution block 470 can be connected to the bypass channel 500 at a position in the second direction inwards of the first channels 450. The return distribution block 470 and the collection distribution block 600 can be connected to the first channels 450 at a position in the second direction inwards of the second channels 490.

[0093] The inlet distribution block 430 and the return distribution block 470 can be connected to the first channels 450 at one point in the second direction outwards of the bypass channel 50. The return distribution block 470 and the collection distribution block 600 can be connected to the second channels 490 at one point in the second direction outwards of the first channels 450.

[0094] In other words, the distributor connection lines 440 can be arranged in the second direction outwards of the bypass inlet line 510, and the collector connection lines 620 can be arranged in the second direction outwards of the distributor connection lines 440.

[0095] Furthermore, the first return connection lines 460 can be arranged in the second direction outwards of the bypass outlet line 520, and the second return connection lines 480 can be arranged in the second direction outwards of the first return connection lines 460.

[0096] The first channels 450, the second channels 490 and the bypass channel 500 can, for example, all be made of an extruded material, which can increase their stiffness compared to a structure produced by a compression molding process.

[0097] Fig. Figure 7 is a view showing by way of example the temperature of the cooling water flowing through the cooling module according to an exemplary embodiment of the present disclosure.

[0098] With reference to Fig. 7 can be confirmed that the cooling water from the supply distributor block 430 flows through one of the first channels 451, the first channels 452 and the bypass channel 500 to the return distributor block 470.

[0099] Afterwards, the cooling water introduced into the return distributor block 470 can be collected via the second channels 490 into the collection distributor block 600.

[0100] Since the cooling water flowing upstream with respect to the direction of flow of the cooling water is the cooling water that has just been introduced into the cooling module 410, the temperature of the cooling water can be relatively low, and since the cooling water flowing downstream with respect to the direction of flow of the cooling water is the cooling water that cools the battery cell stacks 200 (see Fig. 1) The temperature of the cooling water can be relatively high.

[0101] For example, in the first-first and first-second channels 451 and 452, the cooling water flowing through the area near the supply distributor block 430 in relation to the direction of flow of the cooling water may have a relatively low temperature, and the cooling water flowing through the area near the return distributor block 470 may have a relatively high temperature.

[0102] Meanwhile, the cooling water flowing through the bypass channel 500 can be introduced into the return distributor block 470 at a lower temperature than the cooling water flowing through the first-first and first-second channels 451 and 452.

[0103] The cooling water introduced into the return manifold block 470 via the bypass channel 500 can flow into the second channels 490. In the second channels 490, the cooling water flowing through the bypass channel 500 can mix with the cooling water introduced into the second channels 490 via the first channels 450.

[0104] Accordingly, the temperature of the cooling water flowing through the second channels 490 according to an exemplary embodiment of the present disclosure can be lower than the temperature of the cooling water flowing through second channels of a cooling module without a bypass channel structure.

[0105] Due to the intended design, the temperature difference of the cooling module 410 in the second direction can be reduced, and the temperature difference between the battery cell stacks 200 can be reduced depending on their positions in the second direction. Thus, a performance difference between the battery cells can be prevented.

[0106] As described above, the cooling water flowing through the bypass channel, which bypasses the first channels, can be introduced into the second channels, thereby reducing the temperature differences between the battery cells in the lateral direction.

[0107] The cooling water can flow through the bypass channel, which bypasses the first channels, thus improving the cooling of the battery cells located in the middle area in the direction of width.

[0108] The flow rate of the cooling water introduced into each of the first-first and first-second channels can be adjusted, thereby reducing the temperature differences between the battery cells in the lateral direction.

[0109] The first and second distribution connection lines can be connected or attached at positions that are offset in the lateral direction from the centers of the first-first and first-second channels, which can prevent the battery cells cooled by the cooling water flowing through the first-first and first-second channels from being undercooled.

[0110] The direction of flow of the cooling water through the first channels can be changed, which can increase the contact time of the battery cells and the cooling water flowing through the first channels, thus improving the cooling performance of the battery cells.

[0111] The base plate of the cooling module can be manufactured using extrusion dies, which can improve productivity and rigidity.

[0112] Furthermore, the present disclosure may produce various effects that are directly or indirectly recognizable.

[0113] Although the present disclosure has been described with reference to exemplary embodiments and the accompanying drawings, it is not limited thereto, but can be modified and altered in various ways by the person skilled in the art in this field to which the present disclosure relates, without departing from the spirit and scope of the present disclosure in accordance with the following claims.

[0114] Therefore, the exemplary embodiments of the present disclosure serve to illustrate the spirit and scope of the present disclosure, but not to limit it, so that the spirit and scope of the present disclosure are not limited by the embodiments. The scope of the present disclosure should be interpreted on the basis of the accompanying claims, and all technical ideas that fall within the scope of the claims should be included in the scope of the present disclosure. REFERENCE MARK LIST 100 battery pack 110 Pack cover 120 Electronic module 200 battery cell stacks 300 packaging units 310 page element 320 front cover 330 rear cover 340 transverse element 350 first transverse element 360 second transverse element 400 base plate 410 Cooling module 420 Admission line 430 Inlet distribution block 440 Distribution connection line (e.g. pipe) 450 first channel 451 first-first channel 451a first section of the first-first channel 451b first connection area of ​​the first-first channel 451c second area of ​​the first-first channel 451d second connection area of ​​the first-first channel 451 451e third section of the first-first channel 452 first-second channel 452a first section of the first-second channel 452b first connection area of ​​the first-second channel 452c second area of ​​the first-second channel 452d second connection area of ​​the first-second channel 452e third section of the first-second channel 460 first return connection line 470 Return distributor block 480 second return connection line 490 second channel 500 bypass channel 510 Bypass inlet line (e.g. pipe) 520 Bypass outlet line (e.g. pipe) 600 Collective distribution block 610 Control panel 620 Collective connection line 630 Outlet pipe (e.g. pipe)

Claims

[1] A cooling module comprising: a supply distributor block (430) which is connected to an inlet line (420) into which cooling water is introduced, and which distributes the cooling water, a manifold block (600) which is connected to an outlet line (630) from which the cooling water is discharged, and which collects the cooling water and feeds it to the outlet line (630), a plurality of first channels (450) which have a section connected to the inlet distribution block (430) and extend in one direction, wherein the plurality of first channels (450) are spaced apart from each other, a return distribution block (470) which is connected to the majority of first channels (450) and changes the flow direction of the cooling water supplied by the majority of first channels (450), a plurality of second channels (490) that connect the return distribution block (470) and the collector distribution block (600), and a bypass channel (500) that bypasses the majority of first channels (450), receives the cooling water from the inlet distributor block (430) and supplies the cooling water to the return distributor block (470) through a passage that is shorter than the majority of first channels (450). [2] Cooling module according to claim 1, wherein the bypass channel (500) is arranged in a direction transverse to one direction between the plurality of first channels (450) and extends in one direction from the inlet distributor block (430) to the return distributor block (470). [3] Cooling module according to claim 1 or 2, wherein the bypass channel (500) is spaced apart from the plurality of first channels (450) in a direction crossing one direction. [4] Cooling module according to any one of the preceding claims, wherein each of the first channels (450) comprises: a first area (451a) which is connected to the inlet distribution block (430) and extends in one direction, and a second area (451c) which is located downstream of the first area (451a) with respect to the direction of flow of the cooling water and extends in a direction opposite to the first. [5] Cooling module according to claim 4, wherein the first channel (450) further comprises a third area (451e) which is arranged downstream of the second area (451c) with respect to the flow direction of the cooling water and extends in one direction, wherein the third area (451e) is connected to the return manifold block (470). [6] Cooling module according to claim 5, wherein the first channel (450) further comprises: a first connecting area (451b) that connects the first area (451a) and the second area (451c) and extends in a direction that intersects one direction, and a second connecting area (451d) that connects the second area (451c) and the third area (451e) and extends in the direction intersecting one direction. [7] Cooling module according to any one of the preceding claims, wherein the plurality of first channels (450) comprises: a first channel (451) and a first-second channel (452) which is arranged outwards from the first-first channel (451) in a direction intersecting one direction and at a distance from the first-first channel (451), and wherein a flow rate of the cooling water distributed from the inlet distributor block (430) to the first-second channel (452) is greater than a flow rate of the cooling water distributed from the inlet distributor block (430) to the first-first channel (451). [8] Cooling module according to claim 7, further comprising: at least a first distribution connection line (441) that connects the inlet distribution block (430) and the first channel (451), and at least a second distribution connection line (442) that connects the inlet distribution block (430) and the first-second channel (452), wherein a number of at least one second distribution link line (442) is greater than a number of at least one first distribution link line (441). [9] Cooling module according to claim 7, further comprising: a first distribution connection line (441) that connects the inlet distribution block (430) and the first channel (451), and a second distribution connection line (442) that connects the inlet distribution block (430) and the first-second channel (452), wherein a cross-sectional area of ​​the second distribution connection line (442) is larger than a cross-sectional area of ​​the first distribution connection line (441). [10] Cooling module according to any one of claims 7 to 9, wherein each of the first-first channel (451) and the first-second channel (452) has a first section which is connected to the inlet distribution block (430) and extends in one direction, the cooling module has: a first distribution connection line (441) that connects the inlet distribution block (430) and the first channel (451), and a second distribution connection line (442) that connects the inlet distribution block (430) and the first-second channel (452), and wherein the first distribution link (441) and the second distribution link (442) are connected at positions that are offset from a central section of the first area of ​​the first-first channel (451) and a central section of the first area of ​​the first-second channel (452) in the direction that intersects one direction. [11] Cooling module according to claim 10, wherein the first distribution link line (441) is connected to the first channel (451) at a position inwards of the central section of the first area of ​​the first-first channel (451) in the direction crossing one direction and wherein the second distribution link line (442) is connected to the first-second channel (452) at a position outside the central section of the first area of ​​the first-second channel (452) in the direction crossing one direction. [12] Cooling module according to any one of claims 7 to 11, wherein the inlet distributor block (430) is connected to the bypass channel (500) at a position in the direction crossing one direction inwards of the plurality of first channels (450). [13] Cooling module according to any of the preceding claims, wherein the return distributor block (470) is connected to the bypass channel (500) at a position in a direction crossing one direction inwards of the plurality of first channels (450). [14] Cooling module according to any of the preceding claims, wherein each of the second channels (490) is arranged in a direction crossing one direction outwards from the plurality of first channels (450). [15] Cooling module according to any of the preceding claims, wherein the return distributor block (470) is connected at a position in a direction crossing one direction outwards from the plurality of first channels (450) to the plurality of second channels (490). [16] Cooling module according to any of the preceding claims, wherein the plurality of first channels (450), the plurality of second channels (490) and the bypass channel (500) are formed from an extruded material. [17] A battery pack (100) comprising: a battery cell stack (200) comprising battery cells stacked in one direction and extending in a direction intersecting that one direction, and a base plate supporting the battery cell stack (200), wherein the base plate has a cooling module, the cooling module features: a supply distributor block (430) which is connected to an inlet line into which cooling water is introduced, and which distributes the cooling water, a manifold block (600) which is connected to an outlet line (630) from which the cooling water is discharged, and which collects the cooling water and discharges it to the outlet line (630), a plurality of first channels (450) which have a section connected to the inlet distribution block (430) and extend in one direction, wherein the plurality of first channels (450) are spaced apart from each other, a return distribution block (470) which is connected to the majority of first channels (450) and changes the flow direction of the cooling water supplied by the majority of first channels (450), a multi-channel connecting the return distribution block (470) and the manifold distribution block (600), and a bypass channel (500) that bypasses the majority of first channels (450), receives the cooling water from the inlet distributor block (430) and supplies the cooling water to the return distributor block (470) through a passage that is shorter than the majority of first channels (450). [18] Battery pack according to (100) claim 17, wherein the bypass channel (500) is arranged between the plurality of first channels (450) in a direction which crosses one direction and extends in one direction from the inlet distributor block (430) to the return distributor block (470). [19] Battery pack (100) according to claim 17 or 18, wherein the bypass channel (500) is spaced apart from the plurality of first channels (450) in a direction that crosses one direction.

Images