CN219917316U - Liquid cooling plate and battery pack - Google Patents
Liquid cooling plate and battery pack Download PDFInfo
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- CN219917316U CN219917316U CN202321554429.6U CN202321554429U CN219917316U CN 219917316 U CN219917316 U CN 219917316U CN 202321554429 U CN202321554429 U CN 202321554429U CN 219917316 U CN219917316 U CN 219917316U
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- cooling plate
- water outlet
- water inlet
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- 239000007788 liquid Substances 0.000 title claims abstract description 171
- 238000001816 cooling Methods 0.000 title claims abstract description 170
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 109
- 238000012423 maintenance Methods 0.000 claims description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 230000017525 heat dissipation Effects 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 7
- 230000001681 protective effect Effects 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 238000012546 transfer Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 238000005219 brazing Methods 0.000 description 2
- 239000000110 cooling liquid Substances 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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Abstract
The utility model provides a liquid cooling plate and a battery pack, which comprises an upper liquid cooling plate, a lower liquid cooling plate and a protection plate, wherein a water inlet nozzle and a water outlet nozzle are fixed on the upper liquid cooling plate; the lower layer liquid cooling plate is provided with a liquid cooling area, a water inlet runner and a water outlet runner, the water inlet runner and the water outlet runner are respectively communicated with the water inlet nozzle and the water outlet nozzle, the water inlet runner is positioned at the periphery of the liquid cooling area, and the water outlet runner penetrates through the center of the liquid cooling area, so that a heat exchange medium enters from the periphery of the liquid cooling area to flow out from the middle; one surface of the protective plate, which is far away from the lower liquid cooling plate, is connected with the battery cell. The liquid cooling plate structure is more attached to the characteristic that the battery cells are arranged as middle heat and four sides are cold, so that a heat exchange medium can enter the center from the periphery of the liquid cooling plate, the path of the heat exchange medium is shortened, the heat exchange medium can reach the center of the liquid cooling plate more quickly to dissipate heat of the center of the battery cells, the purpose of liquid cooling and liquid heating is achieved quickly, and the heat dissipation effect is improved.
Description
Technical Field
The utility model relates to the technical field of battery liquid cooling plates, in particular to a liquid cooling plate and a battery pack.
Background
CTC (CelltoChassis) as one of the latest research directions of the power battery of the electric vehicle at present, the concept of a battery pack is abandoned, and the battery core and the bottom cover plate are directly designed integrally. The application of the CTC technology can effectively reduce the weight, reduce intermediate processes and parts, reduce the space saved by the parts, and further can be provided with more batteries, so that the endurance mileage is improved, and the technology is also regarded as the main direction of the electric vehicle in the future. However, CTC technology still faces the influence of ambient temperature on battery performance, and high temperature accelerates the progress of side reactions inside the battery, consumes electrolyte, solvent and electrolyte of the battery, reduces service life, and increases potential safety hazard. It is therefore important to cool the battery when the ambient temperature is too high. At present, a liquid cooling mode is mainly adopted for cooling the power battery.
Chinese patent CN214014856U discloses a liquid cooling plate, comprising an upper liquid cooling plate, more than one middle liquid cooling plate and a lower liquid cooling plate, wherein the middle liquid cooling plate is formed with hollow flow channels, which are respectively connected with a water inlet and a water outlet; the upper liquid cooling plate and the middle liquid cooling plate are in contact area sealing connection, the middle liquid cooling plate and the lower liquid cooling plate are in contact area sealing connection, and a closed flow passage space is formed by the upper liquid cooling plate, the middle liquid cooling plate and the lower liquid cooling plate. According to the technical scheme, the problems that the flow channels of the common liquid cooling plates are uneven, the flatness of the upper liquid cooling plate and the lower liquid cooling plate is low, the flatness is poor, and the fluid pressure inside the liquid cooling plates is low in the prior art are solved by arranging the plurality of liquid cooling plates.
However, the following problems still exist in the above technical scheme: 1. the electric core is arranged as middle heat and four sides are cold, the liquid flow passage of the liquid cooling plate in the technical scheme is an integral serpentine flow passage, and the heat exchange medium flows through the flow passage from the water inlet to the water outlet, and the problem of poor middle heat dissipation effect exists although different flow passages are arranged; 2. the upper liquid cooling plate, the middle liquid cooling plate and the lower liquid cooling plate are sealed, and when the liquid cooling plate has a problem, the whole liquid cooling plate structure needs to be disassembled, so that the maintenance is inconvenient.
Disclosure of Invention
In view of this, the utility model provides a liquid cooling plate to solve the technical problems of poor heat dissipation effect and inconvenient maintenance of the liquid cooling plate in the prior art.
The technical scheme of the utility model is realized as follows:
in one aspect, the utility model provides a liquid cooling plate, which comprises an upper liquid cooling plate, a lower liquid cooling plate and a protection plate,
a water inlet nozzle and a water outlet nozzle are fixed on the upper liquid cooling plate;
the lower liquid cooling plate is provided with a liquid cooling area, a water inlet flow passage and a water outlet flow passage which are respectively communicated with the water inlet nozzle and the water outlet nozzle,
the water inlet flow channels are positioned around the liquid cooling area, and the water outlet flow channels penetrate through the center of the liquid cooling area, so that heat exchange medium enters from the periphery of the liquid cooling area to flow out from the middle;
one surface of the protective plate, which is far away from the lower liquid cooling plate, is connected with the battery cell.
On the basis of the above technical scheme, preferably, the liquid cooling area comprises area flow channels distributed in a plurality of groups, and the plurality of groups of area flow channels are symmetrically arranged on two sides of the water outlet flow channel respectively.
On the basis of the technical scheme, preferably, each group of the regional flow channels comprises liquid cooling flow channels which are sequentially connected in series, and the liquid cooling flow channels are distributed in the regional flow channels in a shape of a Chinese character 'ji'.
On the basis of the technical scheme, preferably, the liquid cooling flow channels are parallel or parallel multi-flow channels outwards from the center of the regional flow channel.
On the basis of the technical scheme, the depth of the liquid cooling flow channel is preferably 4-6 mm, and the width is preferably 21-23 mm.
On the basis of the technical scheme, preferably, reinforcing ribs are arranged between the liquid cooling runners, and the width of each reinforcing rib is 4-6 mm.
On the basis of the technical scheme, the water inlet nozzle and/or one end of the water outlet nozzle is/are/is arranged on the lower liquid cooling plate, and the water inlet nozzle and/or the liquid cooling area communicated with the water outlet nozzle is/are divided by the turbulence piece.
On the basis of the technical scheme, the water inlet nozzle and the water outlet nozzle are preferably further provided with square steel, the square steel is fixed on the upper liquid cooling plate, and the water inlet nozzle and the water outlet nozzle are inserted into the square steel.
On the basis of the above technical scheme, preferably, one end of the upper liquid cooling plate, which is far away from the water inlet nozzle and the water outlet nozzle, is provided with a maintenance window, and the maintenance window is used for maintaining the inside of the liquid cooling plate.
In another aspect, the utility model provides a battery pack comprising a liquid cooling plate as described above.
Compared with the prior art, the liquid cooling plate has the following beneficial effects:
(1) By arranging the water inlet flow channels around the liquid cooling area and the water outlet flow channels penetrating through the center of the liquid cooling area, the heat exchange medium is enabled to enter from the periphery of the liquid cooling area to flow out from the middle, and the heat exchange medium is enabled to enter the center from the periphery of the liquid cooling plate due to the fact that the electric cores are arranged to be middle heat and cool at the periphery, the path of the heat exchange medium is shortened, the heat exchange medium is enabled to reach the center of the liquid cooling plate more quickly to dissipate heat of the electric core, and therefore the purpose of liquid cooling and liquid heating is achieved quickly, and the heat dissipation effect is improved;
(2) The liquid cooling areas are arranged to form a plurality of groups of area flow channels, and the plurality of groups of area flow channels are symmetrically arranged on two sides of the water outlet flow channel respectively; meanwhile, the liquid cooling flow channels in the regional flow channels are arranged in a shape like a Chinese character 'ji', so that on one hand, heat exchange can be conveniently carried out on different regions of a structure needing heat exchange, and the heat exchange efficiency is improved; on the other hand, the heat exchange medium can uniformly flow through the heat dissipation area, so that the uniformity of the heat dissipation area is ensured, and the heat dissipation dead angle is avoided;
(3) Through setting up the maintenance window with the relative one end of water inlet nozzle and water outlet nozzle on the liquid cooling board, can open the battery package inside and carry out suitable maintenance to electric device when the problem, and then increase the suitability of liquid cooling board.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a perspective view of a liquid cooling plate according to the present utility model;
FIG. 2 is a schematic diagram of a lower liquid cooling plate according to the present utility model;
fig. 3 is a side view of the liquid cooling plate of the present utility model.
Reference numerals:
1. an upper liquid cooling plate; 2. a lower liquid cooling plate; 21. a liquid cooling region; 211. a regional flow channel; 22. a water inlet flow passage; 23. a water outlet flow passage; 24. a liquid cooling runner; 25. a spoiler; 3. a protective plate; 4. a water inlet nozzle; 41. a plug; 5. a water outlet nozzle; 6. square steel; 7. a maintenance window;
Detailed Description
The following description of the embodiments of the present utility model will clearly and fully describe the technical aspects of the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, are intended to fall within the scope of the present utility model.
As shown in fig. 1-3, the liquid cooling plate of the utility model comprises an upper liquid cooling plate 1, a lower liquid cooling plate 2 and a protection plate 3 which are sequentially arranged from top to bottom, wherein the upper liquid cooling plate 1 and the lower liquid cooling plate 2 are fixed by brazing so as to form a liquid cooling plate whole, and then the protection plate 3 is used for enveloping one surface, far away from the upper liquid cooling plate 1, of the lower liquid cooling plate 2 so as to provide protection for the lower liquid cooling plate 2. One side of the protection board 3 far away from the lower liquid cooling plate 2 is connected with the battery cell through heat conducting glue, so that the purpose of heat transfer is achieved, meanwhile, the protection board 3 is equivalent to the bottom plate of the vehicle, and certain strength is required, so that the weight of a seat and an adult can be borne.
Further, a water inlet nozzle 4 and a water outlet nozzle 5 are fixedly connected to the upper liquid cooling plate 1, and one surface, away from the lower liquid cooling plate 2, of the protection plate 3 is connected with the electric core. The lower liquid cooling plate 2 is provided with a liquid cooling area 21, a water inlet flow channel 22 and a water outlet flow channel 23, and a heat exchange medium can be filled in the liquid cooling area 21, specifically, the heat exchange medium can be cooling liquid and is used for exchanging heat to a structure needing heat exchange; meanwhile, the structure requiring heat exchange can be heated according to the needs of the user, and the structure is not limited herein. The water inlet flow passage 22 and the water outlet flow passage 23 are respectively communicated with the water inlet nozzle 4 and the water outlet nozzle 5; the water inlet flow channel 22 is positioned around the liquid cooling area 21, the water outlet flow channel 23 penetrates from one end to the other end of the liquid cooling area 21 and is positioned on the central axis of the liquid cooling area 21, so that the heat exchange medium is promoted to enter from the periphery of the liquid cooling area 21 through the water inlet flow channel 22, flow to the center of the liquid cooling area 21 and then flow out from the water outlet flow channel 23 in the middle. The arrangement of electric core is cold all around for middle heat, compares in the business turn over water mode that heat transfer medium flows to the other end from liquid cooling board one end among the prior art, through setting up inlet channel 22 around liquid cooling region 21, outlet channel 23 sets up liquid cooling region 21 center, can make heat transfer medium get into the center all around from the liquid cooling board, has shortened heat transfer medium's route, makes heat transfer medium can be faster arrive the liquid cooling board center and dispel the heat to electric core center to reach liquid cooling liquid thermal purpose fast, improve the radiating effect.
As a preferred embodiment, the liquid cooling area 21 includes a plurality of groups of area channels 211, and the plurality of groups of area channels 211 are symmetrically disposed on two sides of the water outlet channel 23, wherein each side of the area channels 211 is at least 2 groups, and the 2 groups of area channels 211 are parallel to the direction perpendicular to the water outlet channel 23. Each group of regional runners 211 is provided with a water inlet runner communicated with the water inlet runner 22 and a water outlet runner communicated with the water outlet runner 23, so that heat exchange medium is respectively shunted into the regional runners 211 after entering only the water inlet runner 22 and then flows out together through the water outlet runner 23. By dividing the liquid cooling area 21 into a plurality of groups of area flow channels 211, on one hand, heat exchange can be conveniently performed on different areas of a structure needing heat exchange, so that the heat exchange efficiency is improved; on the other hand, the division of the liquid cooling region 21 into a plurality of groups can further promote the purpose of rapid liquid cooling and heating.
Further, in an embodiment, the areas of the flow channels 211 in each group of areas are uniform, so that the uniformity of the heat dissipation area can be better ensured. In another embodiment, the areas of the regional channels 211 in each group are different, the areas of the regional channels 211 at the two ends of the liquid cooling plate are larger than the areas of the regional channels 211 in the middle, and the areas of the regional channels 211 can be specifically adjusted according to the use requirement. According to the characteristic of the middle heat and the four sides of the battery cell, the area of the flow passage 211 of the middle part area is smaller, the path of the heat exchange medium can be shortened, and the influence on the liquid cooling effect of the middle part due to the fact that too much heat is absorbed in the middle of the heat exchange medium with too long path is avoided.
As a preferred embodiment, each group of regional flow channels 211 comprises liquid cooling flow channels 24 connected in series in sequence, the liquid cooling flow channels 24 are distributed in the regional flow channels 211 in a shape of a Chinese character 'ji', two ends of the Chinese character 'ji' are respectively communicated with the water inlet flow channels 22 and the water outlet flow channels 23, and the liquid cooling flow channels 24 are parallel or parallel multi-flow channels outwards from the center of the regional flow channels 211. Through designing the liquid cooling runner 24 into several shapes for carrying out cold and hot circulation, and for the multichannel, can evenly distributed flow through the heat dissipation region, guarantee the homogeneity in heat dissipation region, avoid the heat dissipation dead angle.
As a preferred embodiment, the depth of the liquid cooling flow channel 24 is 4-6 mm, and the width is 21-23 mm, so that the flow of large water amount can be satisfied, and the purpose of rapid liquid cooling is achieved. The liquid cooling channels 24 are provided with reinforcing ribs, the width of the reinforcing ribs is 4-6 mm, and the reinforcing ribs can meet the requirements of brazing cold plates. The thickness of the upper liquid cooling plate 1 is 5-10 mm, the thickness of the lower liquid cooling plate 2 is 2-3 mm, and the thickness of the protective plate 3 is 5-10 mm.
As a preferred embodiment, the heat exchange device further comprises a turbulence piece 25, the turbulence piece 25 is located at one end of the lower liquid cooling plate 2 close to the water inlet nozzle 4 and/or the water outlet nozzle 5, the extending direction of the turbulence piece 25 along the length is the same as the flowing direction of the heat exchange medium of the water inlet nozzle and/or the water outlet nozzle, the turbulence piece 25 is used for shunting the liquid cooling area 21 communicated with the water inlet nozzle 4 and/or the water outlet nozzle 5, and the heat exchange medium is impelled to be shunted to the periphery of the liquid cooling area 21 after entering through the water inlet nozzle 4.
As a preferred embodiment, the novel water cooling device further comprises square steel 6, the square steel 6 is fixed on the upper liquid cooling plate 1, the water inlet nozzle 4 and the water outlet nozzle 5 are both inserted into the square steel 6, plugs 41 are arranged at one ends of the water inlet nozzle 4 and the water outlet nozzle 5, the plugs 41 are used for protecting the water inlet nozzle 4 and the water outlet nozzle 5, and when the novel water cooling device is used, the plugs 41 are pulled down to introduce heat exchange medium into the water inlet nozzle 4, and after the whole liquid cooling area 21 is fully completed, the heat exchange medium flows out through the water outlet nozzle 5. The water inlet nozzle 4 and the water outlet nozzle 5 are inserted on the square steel 6 to form a quick insertion mode, and meanwhile, the whole water pipe assembly can be completed through the technical scheme, and the water inlet nozzles are arranged to be stacked to form a structure which is more attractive to the whole appearance.
As a preferred embodiment, the utility model further comprises a maintenance window 7, wherein the maintenance window 7 is rectangular, the maintenance window 7 is arranged at one end of the upper liquid cooling plate 1 far away from the water inlet nozzle 4 and the water outlet nozzle 5, and the maintenance window 7 is used for maintaining the inside of the liquid cooling plate. Through setting up maintenance window 7, can open the battery package inside and carry out suitable maintenance to electric device when the problem appears, and then increase the suitability of liquid cooling board.
The utility model also provides a battery pack, which comprises the liquid cooling plate, wherein the shape of the battery pack protection cover plate is always the same as that of the protection plate 3 of the liquid cooling plate, so that the fastening effect of bolts is convenient; meanwhile, the liquid cooling plate can be prevented from being directly connected with the vehicle bottom plate. The heat preservation foam of one deck gum is had in the bellied part all around to the protection apron, and heat preservation foam is between protection apron and liquid cooling board, and its purpose is in order to reach the heat preservation purpose. In addition, the liquid cooling plate and the frame are fixed, namely the liquid cooling plate is arranged above the battery pack, so that the strength can be ensured, the consumption of materials is saved, and the energy density of the whole vehicle is improved greatly.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (10)
1. A liquid cooling plate, characterized in that: comprises an upper liquid cooling plate (1), a lower liquid cooling plate (2) and a protection plate (3),
a water inlet nozzle (4) and a water outlet nozzle (5) are fixed on the upper liquid cooling plate (1);
the lower liquid cooling plate (2) is provided with a liquid cooling area (21), a water inlet flow passage (22) and a water outlet flow passage (23), the water inlet flow passage (22) and the water outlet flow passage (23) are respectively communicated with the water inlet nozzle (4) and the water outlet nozzle (5),
the water inlet flow channels (22) are positioned around the liquid cooling area (21), and the water outlet flow channels (23) penetrate through the center of the liquid cooling area (21) so that a heat exchange medium enters from the periphery of the liquid cooling area (21) to flow out from the middle;
one surface of the protection plate (3) far away from the lower liquid cooling plate (2) is connected with the battery cell.
2. A liquid cooling plate according to claim 1, wherein: the liquid cooling area (21) comprises area flow channels (211) which are distributed in a plurality of groups, and the plurality of groups of area flow channels (211) are symmetrically arranged on two sides of the water outlet flow channel (23) respectively.
3. A liquid cooling plate according to claim 2, wherein: each group of regional runners (211) comprises liquid cooling runners (24) which are sequentially connected in series, and the liquid cooling runners (24) are distributed in the regional runners (211) in a shape of a Chinese character 'ji'.
4. A liquid cooling plate according to claim 3, wherein: the liquid cooling flow channels (24) are parallel or parallel multi-flow channels outwards from the center of the regional flow channel (211).
5. A liquid cooling plate according to claim 3, wherein: the depth of the liquid cooling runner (24) is 4-6 mm, and the width is 21-23 mm.
6. A liquid cooling plate according to claim 3, wherein: reinforcing ribs are arranged between the liquid cooling flow channels (24), and the width of each reinforcing rib is 4-6 mm.
7. A liquid cooling plate according to claim 1, wherein: the novel water inlet valve further comprises a turbulence piece (25), wherein the turbulence piece (25) is positioned on the lower liquid cooling plate (2) and is close to one end of the water inlet nozzle (4) and/or the water outlet nozzle (5), and the turbulence piece (25) is used for shunting a liquid cooling area (21) communicated with the water inlet nozzle (4) and/or the water outlet nozzle (5).
8. A liquid cooling plate according to claim 1, wherein: the water inlet nozzle (4) and the water outlet nozzle (5) are inserted and connected onto the square steel (6).
9. A liquid cooling plate according to claim 1, wherein: the upper liquid cooling plate (1) is far away from one end of the water inlet nozzle (4) and the water outlet nozzle (5) is provided with a maintenance window (7), and the maintenance window (7) is used for maintaining the inside of the liquid cooling plate.
10. A battery pack, characterized in that: a liquid cooling plate comprising any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321554429.6U CN219917316U (en) | 2023-06-19 | 2023-06-19 | Liquid cooling plate and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321554429.6U CN219917316U (en) | 2023-06-19 | 2023-06-19 | Liquid cooling plate and battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219917316U true CN219917316U (en) | 2023-10-27 |
Family
ID=88434906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321554429.6U Active CN219917316U (en) | 2023-06-19 | 2023-06-19 | Liquid cooling plate and battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219917316U (en) |
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2023
- 2023-06-19 CN CN202321554429.6U patent/CN219917316U/en active Active
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