CN216288626U - Liquid cooling board and battery package - Google Patents
Liquid cooling board and battery package Download PDFInfo
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- CN216288626U CN216288626U CN202122569075.XU CN202122569075U CN216288626U CN 216288626 U CN216288626 U CN 216288626U CN 202122569075 U CN202122569075 U CN 202122569075U CN 216288626 U CN216288626 U CN 216288626U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model relates to a liquid cooling plate and a battery pack. The liquid cooling plate comprises a liquid cooling plate main body and a cooling channel for flowing cooling liquid; the liquid cooling plate main body is provided with a flow channel area, a liquid inlet and a liquid outlet, wherein the flow channel area comprises an adjacent electric core pole cooling area and an electric core non-pole cooling area; the cooling channel is arranged in the electric core pole column cooling area and the electric core non-pole column cooling area and communicated with the liquid inlet and the liquid outlet, and the flow of the cooling liquid flowing through the electric core pole column cooling area is larger than the flow of the cooling liquid flowing through the electric core non-pole column cooling area. This liquid cooling plate for the flow of coolant liquid through electric core utmost point post cooling area is greater than the flow of the non-utmost point post cooling area of electric core of flowing through, and the coolant liquid is greater than the heat transfer ability of the non-utmost point post cooling area of electric core to the heat transfer ability of electric core utmost point post cooling area promptly, so makes the temperature drop of electric core utmost point post cooling area be greater than the temperature drop of the non-utmost point post cooling area of electric core, thereby can improve the temperature uniformity of electric core.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a liquid cooling plate and a battery pack.
Background
At present, the design scheme of an integrated liquid cooling plate is mainly adopted to carry out thermal management on a power battery PACK in a CTP (Cell to PACK) form. The liquid cooling plate in the form is high in integration level, the length of a pipeline is reduced, and overall arrangement is convenient. However, as the cell size increases, there is a problem with the temperature uniformity of the power battery pack.
SUMMERY OF THE UTILITY MODEL
Therefore, it is necessary to provide a liquid cooling plate and a battery pack for solving the problem of poor temperature uniformity of the power battery pack.
A liquid cooling plate comprises a liquid cooling plate main body and a cooling channel for flowing cooling liquid;
the liquid cooling plate main body is provided with a flow channel area, a liquid inlet and a liquid outlet, wherein the flow channel area comprises an adjacent electric core polar column cooling area and an electric core non-polar column cooling area;
the cooling channel is arranged in the electric core pole column cooling area and the electric core non-pole column cooling area and is communicated with the liquid inlet and the liquid outlet, and the flow of the cooling liquid flowing through the electric core pole column cooling area is larger than the flow of the cooling liquid flowing through the electric core non-pole column cooling area.
In the liquid cooling plate, the cooling channel arranged in the electric core pole cooling area of the liquid cooling plate main body can be used for cooling the electric core pole area of the battery pack, the cooling channel arranged in the electric core non-pole cooling area of the liquid cooling plate main body can be used for cooling the electric core non-pole area of the battery pack, and considering that the pole area heating power of the electric core is concentrated and the temperature is higher than that of the non-pole area, the cooling channel distributed in the electric core pole cooling area and the electric core non-pole cooling area is improved, for example, the cross section of the cooling channel distributed in the electric core pole cooling area is larger than that of the cooling channel distributed in the electric core non-pole cooling area, so that the flow of the cooling liquid flowing through the electric core pole cooling area is larger than that flowing through the electric core non-pole cooling area, namely, the heat exchange capacity of the cooling liquid to the electric core pole cooling area is larger than that of the electric core non-pole cooling area, so make the temperature drop in electric core utmost point post cooling area be greater than the temperature drop in electric core non-utmost point post cooling area to can improve the temperature uniformity of electric core, especially thin microscler electric core.
In one embodiment, the cooling channel comprises: the device comprises a first main flow channel, a second main flow channel and a plurality of branch flow channels;
the first main flow passage is communicated with the liquid inlet and is arranged in the electric core pole column cooling area, the second main flow passage is communicated with the liquid outlet and is arranged in the electric core non-pole column cooling area, the branch flow passages are communicated with the first main flow passage and the second main flow passage and are arranged in the electric core non-pole column cooling area, and the branch flow passages are distributed at intervals along the flowing direction of the cooling liquid in the first main flow passage.
In one embodiment, the bypass flow channel is in a zigzag shape.
In one embodiment, the liquid cooling plate main body is formed with a plurality of groups of first protruding ribs at intervals along the flowing direction of the cooling liquid in the first main flow channel, and each group of the first protruding ribs has a gap therein to form the branch flow channels.
In one embodiment, each set of the first protruding ribs includes a U-shaped rib and a plurality of in-line ribs, openings of the U-shaped ribs are distributed opposite to the liquid inlet, and the in-line ribs are distributed at intervals along a direction perpendicular to a flowing direction of the cooling liquid in the first main flow channel and are arranged at intervals with the U-shaped ribs to form the branch flow channels.
In one embodiment, at least one and non-adjacent said in-line rib of each group of said first raised ribs is connected to said U-shaped ribs of said first raised ribs of a downstream adjacent group, wherein.
In one embodiment, the periphery of the liquid cooling plate main body is formed with a second protruding rib along the self direction, and a gap is formed between the second protruding rib and the U-shaped rib of each group of the first protruding ribs to form the first main flow channel.
In one embodiment, at least one of said in-line ribs of said first raised ribs of the most downstream group, which is not adjacent, is connected to said second raised rib.
In one embodiment, the non-polar-column cooling region of the battery cell is provided with third protruding ribs distributed along a flowing direction of the cooling liquid in the first main flow channel, one end of each of the third protruding ribs, which is far away from the liquid outlet, is connected with the second protruding rib, and a gap is formed between each of the third protruding ribs and the U-shaped rib of each of the first protruding ribs to form the second main flow channel.
In one embodiment, a fourth raised rib is provided in the first main flow channel and/or the second main flow channel.
In one embodiment, the number of the cell pole cooling region, the number of the cell non-pole cooling region and the number of the cooling channels are 2;
2 the electric core pole column cooling areas are arranged at two ends of the cold plate main body along the width of the electric core non-pole column cooling areas, the electric core non-pole column cooling areas are located between the electric core pole column cooling areas along the width direction of the cold plate main body, and each cooling channel is arranged in the corresponding electric core pole column cooling area and the corresponding electric core non-pole column cooling area.
In one embodiment, the liquid inlet is provided with a liquid inlet joint, and the liquid outlet is provided with a liquid outlet joint.
In one embodiment, the liquid cooling plate body further has a non-flow passage area, and the liquid cooling plate further includes a tray heat insulator disposed on the non-flow passage area.
In one embodiment, the non-flow-channel region is arranged around the flow-channel region, and the tray heat insulation member is a sealing ring capable of being deformed by extrusion.
In one embodiment, the non-runner region is formed with a groove opposite the tray insulation.
A battery pack comprises a battery core, a tray and any one of the liquid cooling plates;
the battery cell is arranged on the liquid cooling plate, a pole column region of the battery cell corresponds to a battery cell pole column cooling region of the liquid cooling plate, and a non-pole column region of the battery cell corresponds to the battery cell non-pole column cooling region;
the tray is arranged on the liquid cooling plate and is arranged around the battery cell in a surrounding mode.
In one embodiment, the battery cell is fixed on the liquid cooling plate by using a heat-conducting structural adhesive.
In the battery pack, the cooling channel arranged in the battery core pole cooling area of the liquid cooling plate main body can be used for cooling the battery core pole area of the battery pack, the cooling channel arranged in the battery core non-pole cooling area of the liquid cooling plate main body can be used for cooling the battery core non-pole area of the battery pack, and considering that the pole area of the battery core has concentrated heating power and higher temperature relative to the non-pole area, the cooling channel distributed in the battery core pole cooling area and the battery core non-pole cooling area is improved, for example, the cross section of the cooling channel distributed in the battery core pole cooling area is larger than that of the cooling channel distributed in the battery core non-pole cooling area, so that the flow of the cooling liquid flowing through the battery core pole cooling area is larger than that of the cooling liquid flowing through the battery core non-pole cooling area, namely, the heat exchange capacity of the cooling liquid on the battery core pole cooling area is larger than that of the battery core non-pole cooling area, so make the temperature drop in electric core utmost point post cooling area be greater than the temperature drop in electric core non-utmost point post cooling area to can improve the temperature uniformity of electric core, especially thin microscler electric core.
Drawings
FIG. 1 is a schematic structural view of a liquid cooling plate with a tray heat shield assembly according to an embodiment of the present invention, as viewed from the top down;
fig. 2 is a schematic diagram illustrating a cooperation between a liquid cooling plate and a battery cell according to an embodiment of the present invention;
fig. 3 is a schematic perspective view of a battery pack according to an embodiment of the utility model;
fig. 4 is an exploded view of a battery pack according to an embodiment of the utility model;
fig. 5 is a schematic structural view of the liquid cooling plate seen from bottom to top according to an embodiment of the present invention.
Wherein the reference numerals in the drawings are as follows:
10. a liquid-cooled plate; 100. a liquid cooling plate main body; 100a, a liquid inlet; 100b, a liquid outlet; 100c, a cell pole cooling area; 100d, a non-pole cooling area of the battery core; 110. a first raised rib; 111. u-shaped ribs; 112. a linear rib; 120. a second raised rib; 130. a third raised rib; 140. a fourth raised rib; 150. a liquid inlet joint; 160. a liquid outlet joint; 170. a groove; 200. a cooling channel; 210. a first main flow passage; 220. a second main flow passage; 230. a branch flow passage; 300. a tray insulation; 20. an electric core; 30. a tray; 40. and (4) heat-conducting structural adhesive.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
An embodiment of the present invention provides a liquid cooling plate 10, as shown in fig. 1, the liquid cooling plate 10 includes a liquid cooling plate main body 100 and a cooling channel 200 for flowing cooling liquid; the liquid cooling plate body 100 has a flow channel region, a liquid inlet 100a and a liquid outlet 100b (see fig. 2), wherein the flow channel region includes an adjacent cell post cooling region 100c and a cell non-post cooling region 100 d; the cooling channel 200 is disposed in the cell post cooling region 100c and the cell non-post cooling region 100d and is communicated with the liquid inlet 100a and the liquid outlet 100b, and a flow rate of the cooling liquid flowing through the cell post cooling region 100c is greater than a flow rate of the cooling liquid flowing through the cell non-post cooling region 100 d.
As an example, the liquid cooling plate 10 is applied to the field of battery packs, such as CTP-type power battery packs, and is mainly used for cooling the battery cells 20 of the battery packs. As shown in fig. 3 and 4, the battery pack may include a battery cell 20, a tray 30, and a liquid cooling plate 10; the battery cell 20 is disposed on the liquid cooling plate 10, and the tray 30 is disposed on the liquid cooling plate 10 and surrounds the battery cell 20. When the battery cell 20 is in operation, the pole areas on both sides of the battery cell 20 generate more concentrated heat power, and the temperature is higher than that in the middle area (this area may be referred to as a non-pole area of the battery cell).
As an example, the liquid-cooled plate body 100 may be formed by brazing two aluminum alloys. Wherein the lower aluminum alloy may be stamped to form the cooling channel 200. It should be noted that, for convenience of describing the internal structure of the liquid-cooled plate 10, the liquid-cooled plate 100 shown in fig. 1 does not include an upper aluminum alloy.
The above-mentioned liquid-cooled plate 10 can be applied to the field of battery packs, wherein the cooling channel 200 disposed in the cell post cooling region 100c of the liquid-cooled plate main body 100 can be used for cooling the cell post region of the battery pack, and the cooling channel 200 disposed in the cell non-post cooling region 100d of the liquid-cooled plate main body 100 can be used for cooling the cell non-post region of the battery pack, considering that the post region of the battery 20 has concentrated heat generation power and higher temperature than the non-post region, the present application improves the cooling channels 200 distributed in the two regions, i.e. the cell post cooling region 100c and the cell non-post cooling region 100d, such as the cross section of the cooling channel 200 distributed in the cell post cooling region 100c is larger than the cross section of the cooling channel 200 distributed in the cell non-post cooling region 100d, so that the flow rate of the cooling liquid flowing through the cell post cooling region 100c is larger than the flow rate flowing through the cell non-post cooling region 100d, that is, the heat exchange capacity of the cooling liquid to the cell pole cooling area 100c is greater than that of the cell non-pole cooling area 100d, so that the temperature drop of the cell pole cooling area 100c is greater than that of the cell non-pole cooling area 100d, and therefore the temperature uniformity of the cell 20 can be improved, and particularly the thin and long cell 20 can be improved.
As shown in FIG. 1, in some embodiments of the present invention, the cooling passage 200 comprises: a first main flow channel 210, a second main flow channel 220 and a plurality of branch flow channels 230; the first main flow channel 210 is communicated with the liquid inlet 100a and disposed in the cell post cooling region 100c, the second main flow channel 220 is communicated with the liquid outlet 100b and disposed in the cell non-post cooling region 100d, the branch flow channels 230 are communicated with the first main flow channel 210 and the second main flow channel 220 and disposed in the cell non-post cooling region 100d, and the plurality of branch flow channels 230 are distributed at intervals along the flowing direction of the cooling liquid in the first main flow channel 210. After passing through the first main flow channel 210, the cooling liquid can be divided into multiple streams and enter different branch flow channels 230, so that the cooling effect on the non-polar-column region of the battery cell 20 can be improved.
With respect to the number of the branch flow channels 230, the embodiment of the present invention is not particularly limited as long as the non-pole region of the battery cell 20 can be effectively cooled, and for example, as shown in fig. 1, the number of the branch flow channels 230 may be 4.
As for the shape of the bypass flow path 230, an example is given in the present invention, and as shown in fig. 1, the bypass flow path 230 has a meander shape. In this way, the flow path of the coolant in the cell non-polar-column cooling region 100d can be increased, and the effect of cooling the non-polar-column region of the cell 20 can be improved.
In some embodiments of the present invention, as shown in fig. 1, a plurality of sets of first protruding ribs 110 are formed at intervals along a flowing direction of the cooling liquid in the first main flow channel 210 in the liquid cooling plate main body 100, and a gap is formed in each set of first protruding ribs 110 to form the branch flow channels 230. Alternatively, the first raised ribs 110 may be formed through the lower aluminum alloy of the stamped liquid cold plate body 100, it being understood that the first raised ribs 110 are raised toward the upper aluminum alloy.
Specifically, as shown in fig. 1, each set of the first protruding ribs 110 includes a U-shaped rib 111 and a plurality of in-line ribs 112, the openings of the U-shaped ribs 111 are distributed opposite to the liquid inlet 100a, and the in-line ribs 112 are distributed at intervals along a direction perpendicular to the flowing direction of the cooling liquid in the first main channel 210 and are spaced from the U-shaped ribs 111 to form the branch channels 230. Thus, the branch flow channel 230 may be configured as a serpentine structure that is bent from near to far for multiple times, so as to improve the cooling effect on the non-pole region of the battery cell 20. Embodiments of the present invention do not effectively limit the number of in-line ribs 112, such as 3, 4, 5, 6, 7, or more.
Optionally, as shown in fig. 1, at least one and non-adjacent in-line rib 112 of each group of first raised ribs 110 is connected to the U-shaped ribs 111 of the first raised ribs 110 of the downstream adjacent group. With such an arrangement, it is ensured that the cooling liquid can flow through the entire branch flow channel 230, and the strength of the liquid cooling plate main body 100 is improved, thereby preventing the liquid cooling plate 10 from deforming. It is to be understood that when only one in-line rib 112 of each set of first raised ribs 110 is connected to the U-shaped ribs 111 of the first raised ribs 110 of the downstream adjacent set, the in-line rib 112 may be any one in-line rib 112 of the set of first raised ribs 110; when each group of first raised ribs 110 has a plurality of in-line ribs 112 connected to the U-shaped ribs 111 of the first raised ribs 110 of a downstream adjacent group, the several in-line ribs 112 are not adjacent, e.g. every other in-line rib 112 of each group of first raised ribs 110 is connected to the U-shaped ribs 111 of the first raised ribs 110 of a downstream adjacent group.
On the premise that each set of the first protruding ribs 110 includes the U-shaped rib 111 and the plurality of in-line ribs 112, as shown in fig. 1, in some embodiments of the present invention, the periphery of the liquid cooling plate main body 100 is formed with the second protruding rib 120 along its own direction, and the second protruding rib 120 and the U-shaped rib 111 of the first protruding rib 110 have a gap therebetween to form the first main flow channel 210. This manner facilitates the formation of the first primary flow channel 210. As an example, the second projection ribs 120 may be formed through the lower aluminum alloy of the stamped liquid cold plate body 100, and it is understood that the second projection ribs 120 are projected toward the upper aluminum alloy.
Further, in some embodiments of the present invention, as shown in fig. 1, at least one and non-adjacent in-line rib 112 of the first raised ribs 110 of the downstream-most group is connected to the second raised rib 120. With this configuration, it is possible to ensure that the cooling liquid can flow through the entire branch flow passage 230 at the most downstream, and also to improve the strength of the cold plate main body 100, thereby preventing the cold plate 10 from being deformed. It is to be understood that when only one in-line rib 112 of the downstream-most set of first raised ribs 110 is connected to the second raised rib 120, the in-line rib 112 may be any one in-line rib 112 of the set of first raised ribs 110; when a plurality of in-line ribs 112 of the downstream-most group are connected to the second raised ribs 120, the plurality of in-line ribs 112 are not adjacent, e.g., every other in-line rib 112 of the first raised ribs 110 of the downstream-most group is connected to the second raised ribs 120.
On the premise that each set of first protruding ribs 110 includes a U-shaped rib 111 and a plurality of linear ribs 112, as shown in fig. 1, the cell non-terminal cooling region 100d is provided with third protruding ribs 130 distributed along the flow direction of the coolant in the first main flow channel 210, one end of the third protruding ribs 130 far away from the liquid outlet 100b is connected with the second protruding ribs 120, and a gap is formed between the third protruding ribs 130 and the U-shaped ribs 111 of each set of first protruding ribs 110 to form a second main flow channel 220. This manner facilitates the formation of the second main flow passage 220. As an example, the third projection rib 130 may be formed through a lower aluminum alloy of the stamped liquid cold plate body 100, and it is understood that the third projection rib 130 is projected toward an upper aluminum alloy.
On the premise that the cooling channel 200 includes the first main channel 210, the second main channel 220 and the plurality of branch channels 230, as shown in fig. 1, the fourth bead 140 is disposed in the first main channel 210 and/or the second main channel 220. The fourth protruding ribs 140 can improve the strength of the liquid cooling plate main body 100, prevent the liquid cooling plate 10 from deforming, and also can play a role in supporting the upper aluminum alloy. As an example, the fourth projecting ribs 140 may be formed through the lower aluminum alloy of the stamped liquid cold plate body 100, it being understood that the fourth projecting ribs 140 project toward the upper aluminum alloy.
Alternatively, the fourth raised rib 140 may be a complete raised rib, or may be formed by a plurality of raised ribs distributed at intervals.
As shown in fig. 1, in some embodiments of the present invention, the number of the cell post cooling areas 100c, the cell non-post cooling areas 100d, and the cooling channels 200 is 2, 2 cell post cooling areas 100c are disposed at two ends of the liquid cooling plate body 100 along the width thereof, the cell non-post cooling areas 100d are located between the cell post cooling areas 100c along the width direction of the liquid cooling plate body 100, and each cooling channel 200 is disposed in the corresponding cell post cooling area 100c and the corresponding cell non-post cooling area 100 d. Thus, the positive and negative poles of the battery cell 20 can be effectively cooled.
As an example, 2 cooling channels 200 are symmetrically distributed about the long axis of the liquid-cooled plate main body 100, and the two cooling channels 200 share one third raised rib 130 and one liquid inlet 100a and one liquid outlet 100 b. During cooling, the cooling liquid flows from the two sides of the liquid cooling plate main body 100 to the middle, that is, the cooling liquid flows in through the liquid inlet 100a and then is distributed to the first main flow channels 210 at the two sides, and each first main flow channel 210 is divided into a plurality of branch flow channels 230, flows through the whole battery cell 20 region, finally converges to the second main flow channel 220 at the middle region, and flows out through the liquid outlet 100 b.
As shown in fig. 1, in some embodiments of the present invention, an inlet connector 150 is disposed on the inlet 100a, and an outlet connector 160 is disposed on the outlet 100 b. The liquid inlet joint 150 and the liquid outlet joint 160 are convenient for connecting with external pipelines.
As shown in fig. 1 and 4, in some embodiments of the present invention, the liquid cooling plate main body 100 further has a non-flow passage region, and the liquid cooling plate 10 further includes a tray heat insulating member 300 disposed on the non-flow passage region. The tray heat insulation piece 300 is arranged between the tray 30 of the battery pack and the liquid cooling plate 10, so that the tray 30 made of aluminum is prevented from being in direct contact with the liquid cooling plate 10, the heat conduction effect between the tray 30 and the liquid cooling plate 10 is reduced, and the heat insulation performance of the battery pack is improved, especially in winter.
Further, in some embodiments of the present invention, as shown in fig. 1 and 4, the non-flow channel region is surrounded by the flow channel region, and the tray heat insulation member 300 is a sealing ring capable of being deformed by pressing. The tray heat insulation piece 300 has a certain compression amount, reduces the contact area between the liquid cooling plate 10 and the peripheral structure, can further improve the heat insulation performance, and can also ensure sealing.
Alternatively, the tray heat insulation member 300 may be made of EPDM (Ethylene Propylene Diene Monomer), epoxy resin, foam, or the like.
In the case where the liquid-cooled plate 10 further includes a tray heat insulator 300, as shown in fig. 5, the non-flow path region is formed with a groove 170 opposite to the tray heat insulator 300. The groove 170 may reduce the contact area between the tray heat insulator 300 and the liquid cooling plate main body 100, thereby reducing the heat conduction area therebetween and improving the heat insulation performance of the battery pack. It is understood that the groove 170 may be formed by stamping the lower aluminum alloy of the fluid cold plate body 100 as an example, and it is understood that the groove 170 is raised against the upper aluminum alloy.
Alternatively, the recess 170 may be a complete recess 170, or a plurality of recesses 170 may be spaced apart.
Another embodiment of the present invention further provides a battery pack, as shown in fig. 3 and 4, the battery pack includes a battery cell 20, a tray 30, and the liquid cooling plate 10 described in any one of the above embodiments; the battery cell 20 is disposed on the liquid cooling plate 10, and the pole region of the battery cell 20 corresponds to the battery cell pole cooling region 100c of the liquid cooling plate 10, and the non-pole region of the battery cell 20 corresponds to the battery cell non-pole cooling region 100 d; the tray 30 is disposed on the liquid cooling plate 10 and surrounds the battery cell 20.
In the battery pack described above, the cooling channel 200 disposed in the cell post cooling region 100c of the liquid-cooling plate 10 may be used to cool the cell post region of the battery pack, and the cooling channel 200 disposed in the cell non-post cooling region 100d of the liquid-cooling plate 10 may be used to cool the cell non-post region of the battery pack, in consideration of the concentrated heat generation power of the post region of the battery cell 20 and the higher temperature compared to the non-post region, the present application improves the cooling channels 200 distributed in the two regions, i.e., the cell post cooling region 100c and the cell non-post cooling region 100d, for example, the cross section of the cooling channel 200 distributed in the cell post cooling region 100c is larger than the cross section of the cooling channel 200 distributed in the cell non-post cooling region 100d, so that the flow rate of the cooling liquid flowing through the cell post cooling region 100c is larger than the flow rate flowing through the cell non-post cooling region 100d, that is, the heat exchange capacity of the cooling liquid to the cell pole cooling area 100c is greater than that of the cell non-pole cooling area 100d, so that the temperature drop of the cell pole cooling area 100c is greater than that of the cell non-pole cooling area 100d, and therefore the temperature uniformity of the cell 20 can be improved, and particularly the thin and long cell 20 can be improved.
In some embodiments of the present invention, the battery cell 20 is fixed on the liquid-cooling plate 10 by using a heat-conducting structural adhesive 40. This kind of connected mode can improve the cooling effect of liquid-cooled board 10 to electric core 20. As an example, the battery cell 20 is fixed on the upper aluminum alloy of the liquid cooling plate 10.
In some embodiments of the present invention, the liquid cooled plate 10, the tray 30 and the tray insulation 300 may be connected by an FDS welding process.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (17)
1. A liquid cooling plate, comprising a liquid cooling plate body (100) and a cooling channel (200) for carrying a cooling liquid;
the liquid cooling plate main body (100) is provided with a flow channel region, a liquid inlet (100a) and a liquid outlet (100b), wherein the flow channel region comprises an adjacent cell pole cooling region (100c) and a cell non-pole cooling region (100 d);
the cooling channel (200) is arranged in the cell pole cooling area (100c), the cell non-pole cooling area (100d) and communicated with the liquid inlet (100a) and the liquid outlet (100b), and the flow rate of the cooling liquid flowing through the cell pole cooling area (100c) is greater than the flow rate of the cooling liquid flowing through the cell non-pole cooling area (100 d).
2. A liquid cold plate according to claim 1, wherein said cooling channel (200) comprises: a first main flow passage (210), a second main flow passage (220) and a plurality of branch flow passages (230);
the first main flow channel (210) is communicated with the liquid inlet (100a) and arranged in the cell pole cooling area (100c), the second main flow channel (220) is communicated with the liquid outlet (100b) and arranged in the cell non-pole cooling area (100d), the branch flow channels (230) are communicated with the first main flow channel (210) and the second main flow channel (220) and arranged in the cell non-pole cooling area (100d), and the branch flow channels (230) are distributed at intervals along the flowing direction of the cooling liquid in the first main flow channel (210).
3. A liquid cooled plate according to claim 2, wherein said branch flow channels (230) are meander-like.
4. A liquid cooling plate according to claim 3, characterized in that the liquid cooling plate main body (100) is formed with a plurality of sets of first raised ribs (110) at intervals along the flow direction of the cooling liquid in the first main flow channel (210), each set of the first raised ribs (110) having a gap therein to constitute the branch flow channels (230).
5. The liquid-cooled plate according to claim 4, characterized in that each set of the first raised ribs (110) comprises a U-shaped rib (111) and a plurality of in-line ribs (112), the openings of the U-shaped ribs (111) being distributed away from the liquid inlet (100a), the in-line ribs (112) being spaced apart from the U-shaped ribs (111) to form the bypass flow channels (230) and being distributed at intervals in a direction perpendicular to the direction of flow of the cooling liquid in the first main flow channel (210).
6. Liquid-cooled panel according to claim 5, characterized in that at least one and non-adjacent in-line rib (112) of each group of first raised ribs (110) is connected with the U-shaped rib (111) of the first raised rib (110) of a downstream adjacent group.
7. Liquid cooling panel according to claim 5, characterized in that the periphery of the liquid cooling panel body (100) is formed with second raised ribs (120) in its own direction, said second raised ribs (120) having a gap with the U-shaped ribs (111) of each set of the first raised ribs (110) to constitute the first main flow channels (210).
8. Liquid-cooled panel according to claim 7, characterized in that at least one and non-adjacent in-line rib (112) of the first raised ribs (110) of the most downstream group is connected with the second raised rib (120).
9. The liquid cooling plate of claim 7, wherein the cell non-polar cooling region (100d) is provided with third protruding ribs (130) distributed along a flow direction of the cooling liquid in the first main flow channel (210), an end of the third protruding ribs (130) away from the liquid outlet (100b) is connected with the second protruding ribs (120), and a gap is formed between the third protruding ribs (130) and the U-shaped ribs (111) of each group of the first protruding ribs (110) to form the second main flow channel (220).
10. A liquid cooling plate according to claim 2, characterized in that fourth raised ribs (140) are provided in the first main channel (210) and/or the second main channel (220).
11. The liquid cold plate according to any of claims 1-10, wherein the number of said cell post cooling area (100c), said cell non-post cooling area (100d), said cooling channels (200) is 2;
2 electric core utmost point post cooling area (100c) sets up on liquid cold plate main part (100) is along the both ends of self width, electric core non-utmost point post cooling area (100d) are followed the width direction of liquid cold plate main part (100) is located between electric core utmost point post cooling area (100c), every cooling channel (200) set up in corresponding electric core utmost point post cooling area (100c) and corresponding electric core non-utmost point post cooling area (100 d).
12. A liquid-cooled plate according to any of claims 1-10, wherein the liquid inlet (100a) is provided with an inlet connection (150) and the liquid outlet (100b) is provided with a liquid outlet connection (160).
13. A liquid cooled plate according to any of claims 1-10, wherein the liquid cooled plate body (100) further has a non-flow passage area, and the liquid cooled plate (10) further comprises a tray insulation (300) disposed on the non-flow passage area.
14. The liquid cold plate of claim 13, wherein said non-flow area is defined around said flow area, and said tray insulation (300) is a crushable sealing ring.
15. The liquid cold plate of claim 13, wherein said non-flow path region is formed with a groove (170) opposite said tray insulation (300).
16. A battery pack, characterized by comprising a battery cell (20), a tray (30) and a liquid-cooled plate (10) according to any one of claims 1 to 15;
the battery cell (20) is arranged on the liquid cooling plate (10), the pole area of the battery cell (20) corresponds to the battery cell pole cooling area (100c) of the liquid cooling plate (10), and the non-pole area of the battery cell (20) corresponds to the battery cell non-pole cooling area (100 d);
the tray (30) is arranged on the liquid cooling plate (10) and surrounds the battery cell (20).
17. The battery pack of claim 16, wherein the battery cells (20) are fixed to the liquid-cooled plate (10) by using a thermally conductive structural adhesive (40).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122569075.XU CN216288626U (en) | 2021-10-25 | 2021-10-25 | Liquid cooling board and battery package |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122569075.XU CN216288626U (en) | 2021-10-25 | 2021-10-25 | Liquid cooling board and battery package |
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| CN216288626U true CN216288626U (en) | 2022-04-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116526015A (en) * | 2023-07-03 | 2023-08-01 | 深圳海辰储能控制技术有限公司 | Battery module and energy storage system |
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2021
- 2021-10-25 CN CN202122569075.XU patent/CN216288626U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116526015A (en) * | 2023-07-03 | 2023-08-01 | 深圳海辰储能控制技术有限公司 | Battery module and energy storage system |
| CN116526015B (en) * | 2023-07-03 | 2024-04-05 | 深圳海辰储能科技有限公司 | Battery module and energy storage system |
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