Liquid cooling plate and liquid cooling box

Abstract

The utility model provides a liquid cooling plate, which comprises a cooling plate main body and a pipeline joint, the cooling plate main body comprises a base plate and a runner plate which is arranged below the base plate and is laminated with the base plate, the runner plate comprises a pipeline part which is formed by sinking downwards and an attaching part which is attached to the lower surface of the base plate, and the pipeline part comprises a liquid inlet and a liquid outlet through which cooling liquid flows in and out; the pipeline connector is arranged below the flow channel plate and fixed on the attaching part on the peripheral side of the liquid inlet and / or the liquid outlet, a protruding part protruding upwards is arranged on the base plate corresponding to the liquid inlet and / or the liquid outlet, a transition cavity is formed between the protruding part and the flow channel plate, and the pipeline connector is communicated with the liquid inlet and / or the liquid outlet through the transition cavity. According to the utility model, the liquid inlet joint and the liquid outlet joint are directly fixed on the fitting part, so that the liquid inlet joint and the liquid outlet joint are positioned outside the battery pack box body, the liquid inlet joint and the liquid outlet joint do not interfere with the installation of batteries in the battery pack box body, and the influence on the battery module caused by the leakage of cooling liquid due to the failure of a welding seam is also effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of battery thermal management, in particular to a liquid cooling plate and a liquid cooling box. Background Art

[0002] With the continuous development of the automobile industry, gasoline or diesel-powered vehicles are gradually being replaced by electric vehicles. As the energy storage device of electric vehicles and the only power source to drive electric vehicles, the safety factor of the battery is extremely important.

[0003] At present, batteries and liquid cooling plates are usually provided in the battery pack of electric vehicles, and the batteries are placed on the liquid cooling plate so that the batteries can be cooled by the liquid cooling plate. In the prior art, the water inlet pipe joint and the water outlet pipe joint of the liquid cooling plate are generally arranged inside the battery pack, that is, the water inlet pipe joint and the water outlet pipe joint are arranged on the flat plate where the battery is installed. However, the above-mentioned arrangement will have a very adverse effect on the safety of the vehicle-mounted battery pack and the safety of the entire vehicle once the pipe joint leaks, which will cause great safety hazards to the entire vehicle, and most of the existing joints use through-box joints or brazed joints protruding from the frame. The former has complex machined structures, cumbersome assembly processes, high costs and other problems, while the latter will increase the size of the cold plate, which invisibly increases the size of the liquid cooling box.

[0004] Therefore, it is necessary to provide a liquid cooling plate and a liquid cooling box to overcome the above-mentioned defects. Utility Model Content

[0005] The utility model aims to provide a liquid cooling plate and a liquid cooling box.

[0006] According to one aspect of the utility model, a liquid cooling plate is provided, comprising:

[0007] A cold plate body, the cold plate body comprising a base plate and a flow channel plate disposed below the base plate and stacked with the base plate, the flow channel plate comprising a pipeline portion formed by a downward depression and a bonding portion bonded to the lower surface of the base plate, the pipeline portion comprising a liquid inlet and a liquid outlet for the coolant to enter and exit;

[0008] A pipe joint, which is arranged below the flow channel plate and fixed on the fitting part around the liquid inlet and / or the liquid outlet, and a protruding part protruding upward is provided on the substrate corresponding to the liquid inlet and / or the liquid outlet, and a transition cavity is formed between the protruding part and the flow channel plate, and the pipe joint is connected with the liquid inlet and / or the liquid outlet through the transition cavity.

[0009] Preferably, the liquid inlet and the liquid outlet are located on the same side in the length direction of the flow channel plate. The pipeline joint includes a liquid inlet joint and a liquid outlet joint. The liquid inlet joint is arranged below the flow channel plate and fixed on the fitting part around the liquid inlet. The convex part includes a first convex part corresponding to the liquid inlet and protruding upward. The transition cavity includes a first transition cavity formed between the first convex part and the flow channel plate. The liquid inlet joint is communicated with the liquid inlet through the first transition cavity.

[0010] Preferably, the liquid outlet joint is arranged below the flow channel plate and fixed on the fitting part around the liquid outlet. The convex part includes a second convex part corresponding to the liquid outlet and protruding upward. The transition cavity includes a second transition cavity formed between the second convex part and the flow channel plate. The liquid outlet joint is communicated with the liquid outlet through the second transition cavity.

[0011] Preferably, the flow channel plate is provided with a first installation hole for installing the liquid inlet joint and a second installation hole for installing the liquid outlet joint. The first installation hole is located on the fitting part on the same side as the liquid inlet and in front of the liquid inlet. The second installation hole is located on the fitting part on the same side as the liquid outlet and in front of the liquid outlet.

[0012] Preferably, the projections of the first installation hole and the liquid inlet on the substrate and the projection of the first convex part on the substrate all overlap. The projections of the second installation hole and the liquid outlet on the substrate and the projection of the second convex part on the substrate all overlap.

[0013] Preferably, the liquid inlet joint and the liquid outlet joint have the same structure. The liquid inlet joint includes a connection seat fixed to the fitting part and a pipe joint fixed to the connection seat and horizontally arranged. The connection seat is arranged in an L shape. The upper part of the connection seat is provided with an installation avoidance part. The installation avoidance part includes a first step surface and a second step surface that are perpendicular to each other. The connection part of the first step surface and the second step surface is provided with a chamfer.

[0014] Preferably, the connection seat includes an internal cavity, a first flow port communicating the internal cavity with the first transition cavity, and a second flow port communicating the internal cavity with the pipe joint.

[0015] Preferably, the circumferential edge of the first flow port is provided with a first positioning and installation edge. The first positioning and installation edge protrudes from the surface of the connection seat towards the first installation hole and is located in the first installation hole.

[0016] Preferably, a step part is provided at the connection part of the second flow port and the internal cavity. The pipe joint includes a mounting plate provided at its end and a second positioning and installation edge protruding from the mounting plate towards the step part. The second positioning and installation edge is arranged in the step part.

[0017] Preferably, it further includes a frame body, which includes a longitudinal beam assembly and a cross beam assembly fixed below the cold plate body. The longitudinal beam assembly is arranged along the length direction of the cold plate body, and the cross beam assembly is arranged along the width direction of the cold plate body. The cross beam assembly includes a first cross beam and a second cross beam respectively arranged on both sides of the substrate. The liquid inlet joint and the liquid outlet joint are both fixed on the side where the first cross beam is located. A through hole for the liquid inlet joint and the liquid outlet joint to horizontally pass through is formed on the first cross beam, and the pipe joint can extend outwards through the through hole.

[0018] According to another aspect of the present invention, there is provided a liquid cooling box, which includes the above-mentioned liquid cooling plate and a box cover covering the liquid cooling plate.

[0019] Compared with the prior art, the liquid cooling plate and the liquid cooling box provided by the present invention have the following beneficial effects:

[0020] Due to the adoption of the above technical solutions, the present invention has the advantages of simple structure, ingenious design and low cost. By directly fixing the liquid inlet joint and the liquid outlet joint on the joint part, not only are the liquid inlet and outlet joints located outside the battery pack box body, and the liquid inlet and outlet joints will not interfere with the installation of the batteries in the battery pack box body, but also it effectively prevents the influence of coolant leakage caused by the failure of the weld seam on the battery module, reduces the size of the liquid cooling plate, and further reduces the size of the liquid cooling box. At the same time, the setting of the transition cavity also makes the installation positions of the liquid inlet joint and the liquid outlet joint more flexible, and solves the problems of complex machining structure, cumbersome assembly process and high cost of using the through-box joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The following further describes the present invention in detail with reference to the drawings and specific embodiments:

[0022] Figure 1 is a perspective view of the liquid cooling plate of the present invention;

[0023] Figure 2 is an exploded view of the liquid cooling plate of the present invention;

[0024] Figure 3 is a front view of the liquid cooling plate of the present invention;

[0025] Figure 4 is Figure 3 a cross-sectional view taken along line A-A of

[0026] Figure 5 is an exploded view of the liquid inlet joint of the present invention;

[0027] Figure 6 is a perspective view of the flow channel plate of the present invention;

[0028] Figure 7 is a rear perspective view of the liquid cooling plate of the present invention;

[0029] Figure 8 is a perspective view of the frame body of the present utility model;

[0030] Figure 9 is a perspective view of the liquid cooling box of the present utility model.

[0031] Wherein, 1. cold plate body, 11. substrate, 111. bottom plate, 1111. first convex part, 1112. second convex part, 1113. first transition cavity, 112. side wall, 113. flanging, 114. accommodating cavity, 12. flow channel plate, 121. pipeline part, 1211. liquid inlet, 1212. liquid outlet, 122. fitting part, 1221. first mounting hole, 1222. second mounting hole, 2. frame body, 21. longitudinal beam assembly, 211. first longitudinal beam, 212. second longitudinal beam, 22. cross beam assembly, 221. first cross beam, 2211. through hole, 222. second cross beam, 3. strengthening assembly, 31. first transverse strengthening beam, 32. second transverse strengthening beam, 33. third transverse strengthening beam, 34. longitudinal strengthening beam, 4. pipeline joint, 41. liquid inlet joint, 411. connecting seat, 4111. installation avoidance part, 41111. first step surface, 41112. second step surface, 4112. internal cavity, 4113. first flow port, 4114. second flow port, 4115 first positioning and mounting edge, 4116. step part, 412. pipe joint, 4121. mounting plate, 4122. second positioning and mounting edge, 42. liquid outlet joint, 6. module beam, 7. box cover. Detailed implementation manners

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0033] To make the drawings concise, only the parts related to the present utility model are schematically shown in each drawing, and they do not represent the actual structure of the product. In addition, to make the drawings concise and easy to understand, in some drawings, parts with the same structure or function are only schematically shown for one of them, or only one of them is marked. In this article, "one" not only means "only this one", but also can mean "more than one" situation.

[0034] It should also be further understood that the term "and / or" used in the specification and appended claims of the present application refers to any combination and all possible combinations of one or more of the related listed items, and includes these combinations.

[0035] In this text, it should be noted that unless otherwise clearly stipulated and defined, the terms "installation", "connection", and "linkage" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0036] In addition, in the description of this application, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the specific implementation manners of the present utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings, and other implementation manners can also be obtained.

[0038] See Figure 1 and Figure 2 , this embodiment discloses a liquid cooling plate, which includes a cold plate main body 1, a frame main body 2, a strengthening component 3, and a pipeline joint 4. The cold plate main body 1 includes a base plate 11 and a flow channel plate 12 disposed below the base plate 11 and stacked with the base plate 11. The flow channel plate 12 includes a pipeline part 121 formed by downward depression and a fitting part 122 attached to the lower surface of the base plate 11. Among them, the pipeline part 121 includes a liquid inlet 1211 and a liquid outlet 1212 for the coolant to enter and exit. The flow channel plate 12 is formed by stamping a flat plate, and its pipeline part 121 is attached to the base plate 11 to form a sealed cooling flow channel. The bottom of the cold plate main body 1 thus has an effect of cooling and dissipating heat on the battery module.

[0039] The base plate 11 includes a bottom plate 111, a side wall 112 extending upward along the circumference of the bottom plate 111, and a flanging 113 extending outward from the top of the side wall 112. The fitting part 122 of the flow channel plate 12 is attached to the lower surface of the bottom plate 111. The bottom plate 111, the side wall 112, and the flanging 113 are integrally formed. The side wall 112 and the bottom plate 111 together form a downwardly concave receiving cavity 114. Four module beams 6 are fixed in the receiving cavity 114, and the module beams 6 extend along the width direction of the bottom plate. Among them, two module beams 6 are respectively disposed at both ends of the bottom plate 111, and the other two module beams 6 are disposed in the middle of the bottom plate 111, and the module beams 6 are all fixed on the bottom plate 111 for fixing the battery module.

[0040] There are two pipeline connectors 4, which are located below the flow channel plate 12 and are respectively fixed on the fitting parts 122 on the circumferences of the liquid inlet 1211 and the liquid outlet 1212. On the base plate 11, there are upwardly protruding parts corresponding to the liquid inlet 1211 and the liquid outlet 1212. A transition cavity is formed between the protruding parts and the flow channel plate 12. The pipeline connectors 4 are communicated with the liquid inlet 1211 and the liquid outlet 1212 through the transition cavity.

[0041] See Figure 2 、 Figure 3 and Figure 8 , the frame body 2 includes a longitudinal beam assembly 21 and a cross beam assembly 22 placed below the flanging 113. The longitudinal beam assembly 21 is arranged along the length direction of the cold plate body 1, and the cross beam assembly 22 is arranged along the width direction of the cold plate body 1. The accommodation cavity 114 is located within the frame body surrounded by the longitudinal beam assembly 21 and the cross beam assembly 22.

[0042] The longitudinal beam assembly 21 includes a first longitudinal beam 211 and a second longitudinal beam 212 respectively arranged on both sides of the base plate 11 in the width direction. The cross beam assembly 22 includes a first cross beam 221 and a second cross beam 222 respectively arranged on both sides of the base plate 11. The first longitudinal beam 211, the second longitudinal beam 212, the first cross beam 221 and the second cross beam 222 are respectively arranged at the bottom of the corresponding flanging 113 and are fixed to the corresponding flanging 113. A horizontally extending waist-shaped through hole 2211 is formed in the first cross beam 221.

[0043] See Figure 7 , the strengthening assembly 3 is arranged at the bottom of the flow channel plate 12 and is placed within the frame body 2. The strengthening assembly 3 includes a first transverse strengthening beam 31, a second transverse strengthening beam 32 and a third transverse strengthening beam 33 extending along the width direction of the flow channel plate 12 and a longitudinal strengthening beam 34 extending along the length direction of the flow channel plate 12.

[0044] The first transverse strengthening beam 31 is arranged close to the first cross beam 221, the second transverse strengthening beam 32 is arranged close to the second cross beam 222, and the third transverse strengthening beam 33 is arranged between the first transverse strengthening beam 31 and the second transverse strengthening beam 32. The longitudinal strengthening beam 34 is arranged between the flow channel plate 12 and the third transverse strengthening beam 33, and both ends of the longitudinal strengthening beam 34 are respectively arranged between the first transverse strengthening beam 31 and the flow channel plate 12 and between the second transverse strengthening beam 32 and the flow channel plate 12. In this embodiment, there is one longitudinal strengthening beam 34 and it is located in the middle of the width direction of the third transverse strengthening beam 33. In other embodiments, multiple mutually parallel longitudinal strengthening beams 34 can be arranged according to the strength requirements of the liquid cooling plate.

[0045] See Figure 2 and Figure 6, the liquid inlet 1211 and the liquid outlet 1212 are located on the same side in the length direction of the flow channel plate 12, and both are located on the side where the first cross beam 221 is located. The pipeline joint 4 includes a liquid inlet joint 41 and a liquid outlet joint 42. Both the liquid inlet joint 41 and the liquid outlet joint 42 are arranged on the lower surface of the flow channel plate 12 and are fixed between the first cross beam 221 and the first horizontal reinforcing beam 31. The liquid inlet joint 41 and the liquid outlet joint 42 horizontally pass through the waist-shaped through hole 2211 and extend outward.

[0046] The flow channel plate 12 is provided with a first mounting hole 1221 for mounting the liquid inlet joint 41 and a second mounting hole 1222 for mounting the liquid outlet joint 42. The first mounting hole 1221 is located on the fitting part 122 on the same side as the liquid inlet 1211 and in front of the liquid inlet 1211, and the second mounting hole 1222 is located on the fitting part 122 on the same side as the liquid outlet 1212 and in front of the liquid outlet 1212.

[0047] See Figure 3 and Figure 4 , the convex part includes a first convex part 1111 corresponding to the liquid inlet 1211 and protruding upward and a second convex part 1112 corresponding to the liquid outlet 1212 and protruding upward. The transition cavity includes a first transition cavity 1113 formed between the first convex part 1111 and the flow channel plate 12 and a second transition cavity formed between the second convex part 1112 and the flow channel plate 12. The liquid inlet joint 41 is communicated with the liquid inlet 1211 through the first transition cavity 1113, and the liquid outlet joint 42 is communicated with the liquid outlet 1212 through the second transition cavity. In this embodiment, the projections of the first mounting hole 1221 and the liquid inlet 1211 on the substrate 11 coincide with the projection of the first convex part 1111 on the substrate, and the projections of the second mounting hole 1222 and the liquid outlet 1212 on the substrate 11 coincide with the projection of the second convex part 1112 on the substrate 11.

[0048] See Figure 5 , the liquid inlet joint 41 and the liquid outlet joint 42 have the same structure. The liquid inlet joint 41 includes a connecting seat 411 fixed to the fitting part 122 and a pipe joint 412 fixed to the connecting seat 411 and horizontally arranged. The connecting seat 411 is arranged in an L shape, and the upper part of the connecting seat 411 is provided with a mounting avoiding part 4111. The mounting avoiding part 4111 includes a first step surface 41111 and a second step surface 41112 that are perpendicular to each other, and the connection part of the first step surface 41111 and the second step surface 41112 is chamfered. The mounting avoiding part 4111 is used to avoid the accommodation cavity 114 of the substrate 11 and prevent the downwardly concave accommodation cavity 114 from interfering with the installation of the liquid inlet joint 41.

[0049] See Figure 4, the connecting seat 411 includes an internal cavity 4112, a first flow port 4113 that communicates the internal cavity 4112 with the first transition cavity 1113, and a second flow port 4114 that communicates the internal cavity 4112 with the pipe joint 412. A first positioning and mounting rib 4115 is provided on the circumferential edge of the first flow port 4113. The first positioning and mounting rib 4115 protrudes from the surface of the connecting seat 411 towards the first mounting hole 1221 and is located within the first mounting hole 1221. A stepped portion 4116 is provided at the connection between the second flow port 4114 and the internal cavity 4112. The pipe joint 412 includes a mounting plate 4121 provided at its end and a second positioning and mounting rib 4122 that protrudes from the mounting plate 4121 towards the stepped portion 4116. The second positioning and mounting rib 4122 is provided within the stepped portion 4116.

[0050] See Figure 9 , this embodiment also discloses a liquid cooling box, which includes the above-mentioned liquid cooling plate and a box body 7 covering the liquid cooling plate.

[0051] It will be apparent to those skilled in the art that various modifications and variations can be made to the above exemplary embodiments of the present invention without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention cover modifications and variations that fall within the scope of the appended claims and their equivalent technical solutions.

Claims

1. A liquid cooling plate, characterized in that, Comprising: A cold plate body, the cold plate body includes a base plate and a flow channel plate disposed below the base plate and laminated with the base plate. The flow channel plate includes a pipe portion formed by downward depression and a fitting portion attached to the lower surface of the base plate. The pipe portion includes a liquid inlet and a liquid outlet for the coolant to enter and exit; A pipe joint, the pipe joint is disposed below the flow channel plate and fixed on the fitting portion around the liquid inlet and / or the liquid outlet. A raised portion protruding upward is provided on the base plate corresponding to the liquid inlet and / or the liquid outlet. A transition cavity is formed between the raised portion and the flow channel plate. The pipe joint is communicated with the liquid inlet and / or the liquid outlet through the transition cavity.

2. The liquid cooling plate according to claim 1, wherein The liquid inlet and the liquid outlet are located on the same side in the length direction of the flow channel plate. The pipe joint includes a liquid inlet joint and a liquid outlet joint. The liquid inlet joint is disposed below the flow channel plate and fixed on the fitting portion around the liquid inlet. The raised portion includes a first raised portion corresponding to the liquid inlet and protruding upward. The transition cavity includes a first transition cavity formed between the first raised portion and the flow channel plate. The liquid inlet joint is communicated with the liquid inlet through the first transition cavity.

3. The liquid cooling plate according to claim 2, characterized in that, The liquid outlet joint is disposed below the flow channel plate and fixed on the fitting portion around the liquid outlet. The raised portion includes a second raised portion corresponding to the liquid outlet and protruding upward. The transition cavity includes a second transition cavity formed between the second raised portion and the flow channel plate. The liquid outlet joint is communicated with the liquid outlet through the second transition cavity.

4. The liquid cooling plate according to claim 3, wherein The flow channel plate is provided with a first mounting hole for mounting the liquid inlet joint and a second mounting hole for mounting the liquid outlet joint. The first mounting hole is located on the fitting portion on the same side as the liquid inlet and in front of the liquid inlet. The second mounting hole is located on the fitting portion on the same side as the liquid outlet and in front of the liquid outlet.

5. The liquid cooling plate according to claim 4, wherein, The projections of the first mounting hole and the liquid inlet on the base plate coincide with the projection of the first raised portion on the base plate. The projections of the second mounting hole and the liquid outlet on the base plate coincide with the projection of the second raised portion on the base plate.

6. The liquid cooling plate according to claim 5, characterized in that, The liquid inlet joint and the liquid outlet joint have the same structure. The liquid inlet joint includes a connection seat fixed to the fitting portion and a pipe joint fixed to the connection seat and horizontally arranged. The connection seat is arranged in an L shape. An installation avoidance portion is provided on the upper part of the connection seat. The installation avoidance portion includes a first step surface and a second step surface perpendicular to each other. The connection part of the first step surface and the second step surface is chamfered.

7. The liquid cooling plate according to claim 6, characterized in that, The connection seat includes an internal cavity, a first flow port communicating the internal cavity with the first transition cavity, and a second flow port communicating the internal cavity with the pipe joint.

8. The liquid cooling plate according to claim 7, characterized in that, A first positioning and mounting edge is provided on the circumferential edge of the first flow port. The first positioning and mounting edge protrudes from the surface of the connection seat towards the first mounting hole and is located in the first mounting hole.

9. The liquid cooling plate according to claim 8, wherein A step portion is provided at the connection of the second flow port and the internal cavity. The pipe joint includes a mounting plate provided at its end and a second positioning and mounting edge protruding from the mounting plate towards the step portion. The second positioning and mounting edge is provided in the step portion.

10. The liquid cooling plate according to claim 9, characterized in that, It further includes a frame body, and the frame body includes a longitudinal beam assembly and a cross beam assembly fixed below the cold plate body. The longitudinal beam assembly is arranged along the length direction of the cold plate body, and the cross beam assembly is arranged along the width direction of the cold plate body. The cross beam assembly includes a first cross beam and a second cross beam respectively arranged on both sides of the substrate. The liquid inlet joint and the liquid outlet joint are both fixed on the side where the first cross beam is located. A through hole for the liquid inlet joint and the liquid outlet joint to horizontally pass through is formed on the first cross beam, and the pipe joint can extend outwards through the through hole.

11. A liquid cooling box, characterized in that, It includes the liquid cooling plate according to any one of claims 1 to 10 and a box cover covering the liquid cooling plate.

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