CN219759723U - Liquid cooling plate and battery pack - Google Patents
Liquid cooling plate and battery pack Download PDFInfo
- Publication number
- CN219759723U CN219759723U CN202320580227.2U CN202320580227U CN219759723U CN 219759723 U CN219759723 U CN 219759723U CN 202320580227 U CN202320580227 U CN 202320580227U CN 219759723 U CN219759723 U CN 219759723U
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- liquid cooling
- cooling plate
- adhesive layer
- plate
- runner
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- 239000007788 liquid Substances 0.000 title claims abstract description 56
- 238000001816 cooling Methods 0.000 title claims abstract description 46
- 239000012790 adhesive layer Substances 0.000 claims abstract description 47
- 239000000178 monomer Substances 0.000 claims description 15
- 239000012530 fluid Substances 0.000 claims description 8
- 238000003825 pressing Methods 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 abstract description 32
- 230000001070 adhesive effect Effects 0.000 abstract description 32
- 238000005219 brazing Methods 0.000 abstract description 11
- 239000011248 coating agent Substances 0.000 abstract description 11
- 238000000576 coating method Methods 0.000 abstract description 11
- 239000003292 glue Substances 0.000 abstract description 10
- 229910052751 metal Inorganic materials 0.000 abstract description 8
- 239000002184 metal Substances 0.000 abstract description 8
- 238000003466 welding Methods 0.000 abstract description 7
- 229910052755 nonmetal Inorganic materials 0.000 abstract description 6
- 230000000903 blocking effect Effects 0.000 abstract 1
- 238000004026 adhesive bonding Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 239000010410 layer Substances 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
Landscapes
- Battery Mounting, Suspending (AREA)
Abstract
The embodiment of the utility model discloses a liquid cooling plate and a battery pack, wherein a limiting piece is arranged on the surface of a non-flow passage area of a flow passage plate, an adhesive layer is arranged on the limiting piece, the thickness of the adhesive layer is limited by the limiting piece, the bonding reliability of the adhesive layer is ensured, the problem of glue overflow caused by the fact that the flatness deviation of the liquid cooling plate is large when the pressure of the cooling plate is maintained is avoided, the flow passage is prevented from being blocked, the glue coating amount is reduced, the cost is reduced, the brazing in the prior art is replaced in an adhesive mode, the non-metal or dissimilar metal bonding can be realized, and the problem of the flow passage blocking caused by poor welding due to the occurrence of a frying point in the brazing connection is avoided.
Description
Technical Field
The utility model relates to the technical field of new energy batteries, in particular to a liquid cooling plate and a battery pack.
Background
In order to improve the endurance mileage of the electric automobile, a plurality of new technical schemes are adopted in the industry to improve the energy density of the power battery pack, the most main improvement direction is to improve the utilization rate of the whole pack space, the battery cores are arranged as much as possible in the limited space, the number and the height of structural members are reduced, such as CTP (Cell To Pack) and LCTP (i.e. CTP of L600 short blade batteries) schemes, the upper shell and the liquid cooling plate are integrated or directly cooled, and the like, so that the integration efficiency of the power battery pack can be further improved.
However, the bonding of the runner plate and the cover plate in the liquid cooling plate at present mainly depends on brazing, because the brazing technology is mature and the application time is longer, but as the liquid cooling plate is integrated and the space is compressed, the height of the runner is narrower and narrower, the current brazing mode is easy to generate poor welding such as explosion points, the runner is easier to be blocked, and the problems that the brazing between nonmetal and metal or dissimilar metal is difficult to realize are more and more prominent.
Disclosure of Invention
The embodiment of the utility model provides a liquid cooling plate and a battery pack, which can solve the problems that poor welding and flow channel blockage easily occur in the brazing connection between a flow channel plate and a cover plate in the existing liquid cooling plate.
The embodiment of the utility model provides a liquid cooling plate, which comprises: the runner plate is provided with a first surface and a second surface which are oppositely arranged along the thickness direction of the runner plate, a runner area for fluid to flow is arranged on the first surface, and a plurality of non-runner areas which are arranged at intervals are formed on the first surface positioned outside the runner area; the cover plate is covered on the first surface; and the flow passage plate and the cover plate are fixedly bonded through the adhesive layer.
Optionally, the stopper includes a protrusion formed on a surface of the non-flow path region, the surface of the non-flow path region protruding in the thickness direction to form the protrusion.
Optionally, the protruding portion is formed by punching the second surface disposed opposite to the non-flow path region.
Optionally, the limiting piece comprises a limiting strip arranged on the surface of the non-flow passage area, and the limiting strip is adhered to the surface of the non-flow passage area.
Optionally, the orthographic projection of the limiting piece on the first surface falls on the inner side of the surface of the non-flow passage area where the limiting piece is located.
Optionally, the height of the limiting piece in the thickness direction is H 1 The thickness of the adhesive layer is H 2 ，H 1 ≤H 2 。
Optionally, the limiting piece includes a plurality of limiting monomers, and the plurality of limiting monomers are filled in the adhesive layer.
Optionally, the height of the limiting monomer in the thickness direction is H 3 ，H 3 ≤H 2 。
Optionally, the limiting monomer is a spheroid.
Meanwhile, the embodiment of the utility model also provides a battery pack which comprises the liquid cooling plate.
The liquid cooling plate has the beneficial effects that the liquid cooling plate and the battery pack with the liquid cooling plate are provided, the limiting piece is arranged on the surface of the non-runner area of the runner plate, the adhesive layer is arranged on the limiting piece, the thickness of the adhesive layer is limited by the limiting piece, the bonding reliability of the adhesive layer is ensured, the glue overflow problem caused when the flatness deviation of the liquid cooling plate is large and the pressure of the cooling plate is maintained can be avoided, the runner is prevented from being blocked, the glue spreading amount can be reduced, the cost is reduced, the brazing in the prior art is replaced in an adhesive mode, the non-metal or dissimilar metal bonding can be realized, and the problem that the runner is blocked due to poor welding caused by the occurrence of a frying point when the brazing connection is used is avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present 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 schematic perspective view of a flow channel plate and a cover plate in a liquid cooling plate according to an embodiment of the present utility model;
fig. 2 is a schematic diagram of a split structure of a flow channel plate and a cover plate in a liquid cooling plate according to a first implementation manner of the embodiment of the present utility model;
FIG. 3 is a schematic diagram of a combined structure of a flow channel plate and a cover plate in a liquid cooling plate according to a first implementation manner of the embodiment of the present utility model;
fig. 4 is a schematic diagram of a split structure of a flow channel plate and a cover plate in a liquid cooling plate according to a second implementation manner of the embodiment of the present utility model;
FIG. 5 is a schematic diagram of a combination structure of a flow channel plate and a cover plate in a liquid cooling plate according to a second implementation manner of the present utility model;
fig. 6 is a schematic diagram of a split structure of a flow channel plate and a cover plate in a liquid cooling plate according to a third implementation manner of the embodiment of the present utility model;
fig. 7 is a schematic diagram of a combined structure of a flow channel plate and a cover plate in a liquid cooling plate according to a third implementation manner of the present utility model.
Reference numerals illustrate:
1. the liquid cooling plate comprises a liquid cooling plate body, 10, a runner plate body, 101, a first surface, 102, a second surface, 110, a runner area, 111, a groove, 120, a non-runner area, 121, a first section, 122, a second section, 130, a limiting piece, 130a, a protruding part, 131, a concave part, 130b, a limiting strip, 130c, a limiting monomer, 140, an adhesive layer, 20, a cover plate, 21, a first opening, 22, a second opening, 30, a liquid inlet pipe, 40 and a liquid outlet pipe;
x, length direction, Y, width direction, Z, thickness direction.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model. Furthermore, it should be understood that the detailed description is presented herein for purposes of illustration and description only, and is not intended to limit the utility model. In the present utility model, unless otherwise indicated, terms of orientation such as "upper" and "lower" are used to generally refer to the upper and lower positions of the device in actual use or operation, and specifically the orientation of the drawing figures; while "inner" and "outer" are for the outline of the device. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features.
The embodiment of the utility model provides a liquid cooling plate and a battery pack with the liquid cooling plate, wherein a limiting piece is arranged on the surface of a non-runner area of the runner plate, an adhesive layer is arranged on the limiting piece, the thickness of the adhesive layer is limited by the limiting piece, the bonding reliability of the adhesive layer is ensured, the problem of glue overflow caused when the pressure of a refrigeration plate is maintained due to large deviation of flatness of the liquid cooling plate is avoided, the runner is prevented from being blocked, the glue coating amount is reduced, the cost is reduced, the brazing in the prior art is replaced in an adhesive mode, the non-metal or dissimilar metal bonding can be realized, and the problem of poor welding and runner blockage caused by poor welding due to the occurrence of braze welding connection is avoided. As a typical application, the battery pack having the liquid cooling plate may be applied to an electric vehicle to supply electric power to the electric vehicle.
An embodiment of the present utility model provides a liquid cooling plate, referring to fig. 1 to 7, the liquid cooling plate 1 includes: flow channel plate 10, cover plate 20, liquid inlet tube 30 and liquid outlet tube 40.
The flow field plate 10 has a first surface 101 and a second surface 102 disposed opposite to each other in a thickness direction Z thereof, the first surface 101 being provided with flow field regions 110 for fluid flow, and in particular, a plurality of grooves 111 may be formed in the first surface 101 by punching in the thickness direction Z, the plurality of grooves 111 communicating with each other to form the flow field regions 110 on the first surface 101, and the first surface 101 located outside the flow field regions 110 forming a plurality of non-flow field regions 120 arranged at intervals. Referring to fig. 1, the non-flow field 120 includes a plurality of first sections 121 extending in the width direction Y of the flow field plate 10 and second sections 122 extending in the length direction X of the flow field plate 10, the plurality of first sections 121 being spaced apart in the length direction X, and portions of the first sections 121 being connected by the second sections 122.
The liquid inlet pipe 30 and the liquid outlet pipe 40 are arranged in the flow channel region 110 at intervals, specifically, the liquid inlet pipe 30 is arranged at one end of the flow channel plate 10 in the length direction X, the liquid inlet pipe 30 is used for introducing fluid into the flow channel region 110, the fluid flows in the flow channel region 110 to realize the regulation and control of the temperature of the battery pack in the battery pack, the liquid outlet pipe 40 is arranged at the other end of the flow channel plate 10 in the length direction X, and the liquid outlet pipe 40 is used for discharging the fluid in the flow channel region 110 to realize the circulation of the fluid.
The cover 20 is covered on the first surface 101 of the runner plate 10, and the cover 20 is provided with a first opening 21 for the liquid inlet pipe 30 to pass through and a second opening 22 for the liquid outlet pipe 40 to pass through. The surface of the cover plate 20, which is away from the flow passage plate 10, is in contact with the battery pack in the battery pack, and the fluid in the flow passage area 110 is in heat exchange with the battery pack through the cover plate 20 so as to realize regulation and control of the temperature of the battery cells in the battery pack.
The materials of the runner plate 10 and the cover plate 20 may be metal, nonmetal or dissimilar metal with heat conduction function.
In the embodiment of the present utility model, referring to fig. 2 to 7, a limiting member 130 is disposed on the surface of the non-flow channel region 120 of the flow channel plate 10, the limiting member 130 is disposed on the first section 121 along the width direction Y, and/or the limiting member 130 is disposed on the second section 122 along the length direction X, an adhesive layer 140 is disposed on the limiting member 130, the limiting member 130 forms a limitation on the thickness of the adhesive layer 140, and the cover plate 20 is adhesively fixed with the flow channel plate 10 through the adhesive layer 140.
Specifically, the adhesive layer 140 extends along the length direction of the limiting member 130 to be coated on the surface of the non-flow channel region 120, the coating thickness of the adhesive layer 140 on the surface of the non-flow channel region 120 needs to be based on the height of the limiting member 130 in the thickness direction Z, and due to the limitation of the limiting member 130, the coating thickness of the adhesive layer 140 on the surface of the non-flow channel region 120 can be controlled, the adhesive fixation between the cover plate 20 and the flow channel plate 10 is ensured, the consistency of the thicknesses of the adhesive layers 140 is ensured, the adhesive in the adhesive layer 140 is prevented from overflowing into the grooves 111 of the flow channel region 110 due to the extrusion of the cover plate 20, the coating amount of the adhesive is reduced, and the manufacturing cost of the liquid cooling plate is reduced. The adhesive layer 140 is designed to realize adhesion fixation between nonmetal or dissimilar metals, so that the situation of flow channel blockage caused by brazing connection is avoided.
In the liquid cooling plate 1 provided by the embodiment of the utility model, the limiting member 130 comprises the following implementation modes:
in a first implementation manner, referring to fig. 2 to 3, the limiting member 130 is a protrusion 130a formed on the surface of the non-flow channel region 120, that is, the surface of the non-flow channel region 120 protrudes along the thickness direction Z to form the protrusion 130a, and the protrusion 130a may be formed on the first section 121 of the non-flow channel region 120 or on the second section 122 of the non-flow channel region 120, which is selected according to practical requirements. The protruding portion 130a and the runner plate 10 are integrally formed, specifically, the protruding portion 130a is formed on the surface of the non-runner area 120 by stamping the second surface 102 opposite to the non-runner area 120, and the protruding portion 130a is formed on the surface of the non-runner area 120 by stamping, so that processing time is saved, and the problem that too much glue overflows in a local area to block a runner due to the fact that the protruding portion 130a is not in the middle of a glue-coated area when the cover plate 20 is buckled with the runner plate 10 due to processing deviation can be avoided. The depression 131 corresponding to the protrusion 130a is formed on the second surface 102 by pressing, and does not affect the overall strength of the flow field plate 10.
In this implementation manner, the gluing operation of the adhesive is performed on the surface of the non-flow channel region 120 of the flow channel plate 10 by taking the extending direction of the protruding portion 130a as a gluing track, so as to form the adhesive layer 140, after the gluing is completed, the cover plate 20 is attached to the first surface 101 of the flow channel plate 10, and the adhesive is cured by pressure maintaining and standing, so that the adhesive fixation of the cover plate 20 and the flow channel plate 10 is realized.
Wherein, referring to fig. 2, the orthographic projection of the protrusion 130a on the first surface 101 falls on the inner side of the surface of the non-flow channel region 120 where the protrusion 130a is located, the width of the protrusion 130a in the length direction X is smaller than the width of the non-flow channel region 120 where the protrusion 130a is located in the length direction X, and referring to fig. 3, the height of the protrusion 130a in the thickness direction Z is H 1 The adhesive layer 140 has a height H in the thickness direction Z 2 ，H 1 ＝H 2 In other implementations, H 1 ＜H 2 So that the protrusion 130a forms a limitation on the thickness of the adhesive layer 140, and the adhesive layer 140 is formed by applying the adhesive at the height H of the protrusion 130a 1 The coating is performed for reference, so that the situation that the adhesive layer 140 is too thick due to excessive coating of the adhesive is avoided, and the adhesive overflows to a runner when the cover plate 20 is buckled and pressed with the adhesive layer 140 is avoided.
Wherein, referring to FIG. 3, H 2 The cover plate 20 is buckled on the runner plate 10, and the pressure is maintained for standing, so that the thickness of the adhesive layer 140 is the thickness of the adhesive after the adhesive is solidified.
In a second implementation manner, referring to fig. 4 to 5, the limiting member 130 is a limiting strip 130b disposed on the surface of the non-flow channel region 120, one surface of the limiting strip 130b, which is away from the cover plate 20 in the thickness direction Z, is provided with a glue layer (not shown in the drawing), the limiting strip 130b is adhered to the surface of the non-flow channel region 120 through the glue layer, and the limiting strip 130b may be adhered to the first section 121 of the non-flow channel region 120 or the second section 122 of the non-flow channel region 120, and is selected according to practical use requirements.
In this implementation manner, the gluing operation of the adhesive is performed on the surface of the non-flow channel region 120 of the flow channel plate 10 by taking the extending direction of the limiting strip 130b as a gluing track, so as to form the adhesive layer 140, after the gluing is completed, the cover plate 20 is attached to the first surface 101 of the flow channel plate 10, and the adhesive is cured by pressure maintaining and standing, so that the adhesive fixation of the cover plate 20 and the flow channel plate 10 is realized.
Referring to fig. 4, the orthographic projection of the stop 130b on the first surface 101 falls on the inner side of the surface of the non-flow channel region 120 where the stop 130b is located, the width of the stop 130b in the length direction X is smaller than the width of the non-flow channel region 120 where the stop 130b is located in the length direction X, and referring to fig. 5, the height of the stop 130b in the thickness direction Z is H 1 The adhesive layer 140 has a height H in the thickness direction Z 2 ，H 1 ＝H 2 In other implementations, H 1 ＜H 2 So that the limit bar 130b forms a limit to the thickness of the adhesive layer 140, and the adhesive layer 140 is formed by applying the adhesive at the height H of the limit bar 130b 1 The coating is performed for reference, so that the situation that the adhesive layer 140 is too thick due to excessive coating of the adhesive is avoided, and the adhesive overflows to a runner when the cover plate 20 is buckled and pressed with the adhesive layer 140 is avoided.
Therein, refer to fig. 5,H 2 The cover plate 20 is buckled on the runner plate 10, and the pressure is maintained for standing, so that the thickness of the adhesive layer 140 is the thickness of the adhesive after the adhesive is solidified.
In a third implementation, referring to fig. 6 to 7, the limiting member 130 is a plurality of limiting monomers 130c filled in the adhesive layer 140, the limiting monomers 130c may be added to the adhesive before the adhesive is coated, the limiting monomers 130c may be added to the adhesive after the adhesive is coated, and the limitation after the adhesive layer 140 is formed by the height of the limiting monomers 130c in the thickness direction Z. Specifically, referring to fig. 6, the spacing monomer 130c is in the shape of a sphere, such as glass bead, the particle diameter of the spacing monomer 130c is H3, i.e., the height of the spacing monomer 130c in the thickness direction Z is H 3 ，H 3 ＝H 2 In other implementations, H 3 ＜H 2 Therefore, the limiting strip 130b is used for limiting the thickness of the adhesive layer 140, when the adhesive is coated to form the adhesive layer 140, the coating thickness of the adhesive layer 140 is determined by that the adhesive can cover the limiting monomer 130c, so that the situation that the adhesive layer 140 is too thick due to excessive coating of the adhesive, and the adhesive overflows to a runner when the cover plate 20 is buckled and pressed to the adhesive layer 140 is avoided. At the position ofIn other implementations, the shape of the limiting unit 130c may be an ellipsoid, a square, etc., and is selected according to the actual requirement.
Therein, refer to fig. 7,H 2 The cover plate 20 is buckled on the runner plate 10, and the pressure is maintained for standing, so that the thickness of the adhesive layer 140 is the thickness of the adhesive after the adhesive is solidified.
Meanwhile, the embodiment of the utility model also provides a battery pack, which comprises the liquid cooling plate 1, and provides electric energy for the electric automobile.
The above describes a liquid cooling plate and a battery pack provided by the embodiments of the present utility model in detail, and specific examples are applied to illustrate the principles and embodiments of the present utility model, and the above description of the embodiments is only for helping to understand the method and core ideas of the present utility model; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present utility model, the present description should not be construed as limiting the present utility model.
Claims (10)
1. A liquid cooling plate, comprising:
the runner plate is provided with a first surface and a second surface which are oppositely arranged along the thickness direction of the runner plate, a runner area for fluid to flow is arranged on the first surface, and a plurality of non-runner areas which are arranged at intervals are formed on the first surface positioned outside the runner area; and
the cover plate is covered on the first surface;
and the flow passage plate and the cover plate are fixedly bonded through the adhesive layer.
2. The liquid cooling plate according to claim 1, wherein the stopper includes a boss formed on the non-flow path region surface, the non-flow path region surface protruding in the thickness direction to form the boss.
3. The liquid cooling plate according to claim 2, wherein the convex portion is formed by pressing the second surface disposed opposite to the non-flow path region.
4. The liquid cooling plate according to claim 1, wherein the stopper includes a stopper bar provided on the surface of the non-flow path region, and the stopper bar is adhered to the surface of the non-flow path region.
5. The liquid cooling plate according to claim 1, 2 or 4, wherein an orthographic projection of the stopper on the first surface falls inside a surface of the non-flow passage area where the stopper is located.
6. The liquid-cooled plate according to claim 1, 2 or 4, wherein the height of the stopper in the thickness direction is H 1 The thickness of the adhesive layer is H 2 ，H 1 ≤H 2 。
7. The liquid cooling plate according to claim 1, wherein the limiting member comprises a plurality of limiting monomers, and the plurality of limiting monomers are filled in the adhesive layer.
8. The liquid cooling plate according to claim 7, wherein the height of the limiting unit in the thickness direction is H 3 ，H 3 ≤H 2 。
9. The liquid cooling plate according to claim 8, wherein the limiting unit is a sphere.
10. A battery pack comprising the liquid cooling plate according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320580227.2U CN219759723U (en) | 2023-03-22 | 2023-03-22 | Liquid cooling plate and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320580227.2U CN219759723U (en) | 2023-03-22 | 2023-03-22 | Liquid cooling plate and battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219759723U true CN219759723U (en) | 2023-09-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320580227.2U Active CN219759723U (en) | 2023-03-22 | 2023-03-22 | Liquid cooling plate and battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219759723U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117219947A (en) * | 2023-11-08 | 2023-12-12 | 中创新航科技集团股份有限公司 | Battery pack and assembling and disassembling method thereof |
-
2023
- 2023-03-22 CN CN202320580227.2U patent/CN219759723U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117219947A (en) * | 2023-11-08 | 2023-12-12 | 中创新航科技集团股份有限公司 | Battery pack and assembling and disassembling method thereof |
| CN117219947B (en) * | 2023-11-08 | 2024-03-08 | 中创新航科技集团股份有限公司 | Battery pack and assembling and disassembling method thereof |
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