Liquid cooling plate

Abstract

The utility model discloses a liquid cooling plate, and relates to the technical field of battery energy storage. The liquid cooling plate comprises a plurality of cooling flow channels, the cooling flow channels are used for circulation of cooling liquid, the multiple cooling flow channels are arranged side by side, the ends of the multiple cooling flow channels are communicated with one another, the liquid cooling plate further comprises a flow guide plate, the flow guide plate is arranged at the ends of the cooling flow channels, a plurality of flow guide holes are formed in the flow guide plate, and therefore the flow direction of the cooling liquid is guided. The flow velocity of the cooling liquid at the bending part of the cooling flow channel is more uniform, a low-flow-velocity area even a flowing dead area at the bending part of the flow channel is avoided, vortexes and cyclones are avoided, the heat exchange efficiency at the bending part of the cooling flow channel is improved, and the problem of low local heat exchange efficiency of the liquid cooling plate is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery energy storage technology field, especially relate to a liquid cooling plate. BACKGROUND

[0002] In recent years, the battery energy storage industry develops rapidly, and the working temperature of the battery as the core component of the power storage has an important influence on the performance, the life and the safety of the whole energy storage system, and the liquid cooling plate is usually arranged in the prior art to cool the battery.

[0003] The liquid cooling plate on the market has a plurality of cooling flow channels arranged inside, the cooling flow channels are used for circulating cooling liquid, in order to facilitate maintenance, the inlet and outlet plugs of the cooling liquid need to be arranged on the same side, so that the cooling flow channels have a 180° bending, and the cooling liquid has a low flow rate area or even a flow dead zone at the bending of the flow channel, which often causes problems such as impurity deposition, low local heat exchange efficiency and cavitation, thereby affecting the temperature consistency and service life of the whole battery. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problem that the liquid flow rate is uneven at the bending of the cooling flow channel of the liquid cooling plate in the prior art, the flow direction is not controlled, and the local heat exchange efficiency is low, and provides a liquid cooling plate.

[0005] The utility model solves the above technical problems through the following technical scheme:

[0006] The utility model provides a liquid cooling plate, the liquid cooling plate contains a plurality of cooling flow channels, the cooling flow channel is used for circulating cooling liquid, a plurality of cooling flow channels are arranged side by side, and the end portions of a plurality of cooling flow channels are communicated with each other, the liquid cooling plate also contains a flow guide plate, the flow guide plate is arranged at the end portion of the cooling flow channel, and a plurality of flow guide holes are arranged on the flow guide plate.

[0007] In the scheme, the flow guide plate is arranged at the two ends of the cooling flow channel, a plurality of flow guide holes are arranged on the flow guide plate, the flow direction of the cooling liquid is guided, the flow rate of the cooling liquid at the bending of the cooling flow channel is more uniform, the low flow rate area or even the flow dead zone at the bending of the flow channel is avoided, the vortex and the cyclone are avoided, the heat exchange efficiency at the bending of the cooling flow channel is improved, and the problem of low local heat exchange efficiency of the liquid cooling plate is solved.

[0008] Preferably, the flow guide plate contains a first flow guide plate, and the first flow guide plate is arranged at the boundary between adjacent cooling flow channels.

[0009] In the scheme, by arranging the first flow guide plate at the boundary of adjacent cooling flow channels, the flow direction of the cooling liquid at the boundary of the adjacent cooling flow channels can be guided, the low flow area or even the flow dead zone at the boundary of the cooling flow channels can be avoided, the cooling liquid can flow more smoothly, and the heat exchange can be more effectively carried out.

[0010] Preferably, the liquid cooling plate comprises a plurality of rib plates arranged in parallel and at intervals to form the cooling flow channels, and one end of the first flow guide plate abuts one end of the rib plate.

[0011] In the scheme, the liquid cooling plate is provided with a plurality of rib plates arranged in parallel and at intervals, and the cooling flow channels are formed between the adjacent two rib plates. By abutting one end of the first flow guide plate with one end of the rib plate, the flow guide plate can cover the entire bending part, and the cooling liquid can flow through the flow guide holes on the flow guide plate to make the flow guide effect of the flow guide plate better, and further improve the heat exchange effect of the liquid cooling plate.

[0012] Preferably, the flow guide plate further comprises a second flow guide plate arranged at the middle part of the adjacent two cooling flow channels.

[0013] In the scheme, in addition to the first flow guide plate, the flow guide plate further comprises a second flow guide plate arranged at the middle part of the adjacent two cooling flow channels, so as to guide the cooling liquid at the middle part of the adjacent two cooling flow channels. By arranging the second flow guide plate on the basis of the first flow guide plate, the flow guide effect of the flow guide plate can be further improved, and the heat exchange effect of the liquid cooling plate is better.

[0014] Preferably, the extension direction of the flow guide plate is consistent with the extension direction of the cooling flow channel.

[0015] In the scheme, the extension direction of the flow guide plate is consistent with the extension direction of the cooling flow channel, so that the flow guide plate can better guide the flow direction of the cooling liquid, and further improve the heat exchange effect of the liquid cooling plate.

[0016] Preferably, one side of the flow guide plate is an arc surface, the arc surface is arranged on the side of the flow guide plate close to the inflow direction of the cooling liquid, and the arc surface is curved toward the inflow direction of the cooling liquid.

[0017] In the scheme, the side of the flow guide plate close to the inflow direction of the cooling liquid is arranged as an arc surface, and the arc surface is curved toward the inflow direction of the cooling liquid, so as to better guide the cooling liquid to flow into the flow guide hole and then flow into the adjacent cooling flow channel through the flow guide hole.

[0018] Preferably, the plurality of flow guide holes extend along the horizontal direction.

[0019] In the scheme, by setting the flow guide hole to extend along the horizontal direction, the extension direction of the flow guide hole is consistent with the flow direction of the cooling liquid, so that the resistance of the cooling liquid flow can be reduced, and the cooling liquid can be better guided to the adjacent cooling flow channel.

[0020] Preferably, the flow guide hole comprises a first flow guide hole and a second flow guide hole, the aperture of the first flow guide hole is larger than that of the second flow hole, and the first flow guide hole is arranged at the middle part of the flow guide plate, and the second flow guide hole is arranged on both sides of the first flow guide hole.

[0021] In the scheme, the flow guide hole is divided into a first flow guide hole and a second flow guide hole, the first flow guide hole is arranged at the middle part of the flow guide plate, the second flow guide hole is arranged on both sides of the first flow guide hole, and the apertures of the first flow guide hole and the second flow guide hole are different, because the flow of the cooling liquid at the middle part of the flow guide plate is larger, the aperture of the first flow guide hole is set to be larger to reduce the flow resistance, and part of the cooling liquid can still be forced to flow to the second flow guide hole on both sides; and the flow of the cooling liquid on both sides of the flow guide plate is smaller, so the aperture of the second flow guide hole is set to be smaller, so that the cooling liquid at the low flow speed area of the bending part at the two ends of the cooling flow channel can be supplemented, the uniform flow of the cooling liquid is achieved, and the flow guiding effect of the flow guide plate is further improved.

[0022] Preferably, the liquid cooling plate further comprises a plug, the plug is arranged at two ends of the cooling flow channel, the flow guide plate is arranged on the plug, and the plug and the flow guide plate are integrally formed.

[0023] In the scheme, the flow guide plate is arranged on the plug, and the plug and the flow guide plate are integrally formed during processing, so that the production and manufacturing of the flow guide plate are more convenient, the production efficiency of the liquid cooling plate is improved, and the production cost is reduced.

[0024] Preferably, the liquid cooling plate comprises an inlet and an outlet, the inlet and the outlet are arranged at the same end of the liquid cooling plate, the cooling flow channel comprises a first flow channel and a second flow channel, the first flow channel and the second flow channel are communicated, the inlet is arranged in the first flow channel, and the outlet is arranged in the second flow channel.

[0025] In the scheme, the cooling flow channel comprises a first flow channel and a second flow channel, the cooling liquid enters the first flow channel from the inlet, then enters the second flow channel from the first flow channel, and finally is discharged from the outlet, and the inlet and the outlet are arranged at the same end of the liquid cooling plate, so that the maintenance of the liquid cooling plate is more convenient.

[0026] The positive progress effect of the utility model lies in:

[0027] The utility model provides a kind of liquid cooling plate, liquid cooling plate includes multiple cooling flow channels, flow guide plate is set in the both ends of cooling flow channel, multiple flow guide holes are equipped on flow guide plate, to guide the flow direction of cooling liquid, make the flow velocity of cooling liquid at cooling flow channel bending place more uniform, avoid the low flow velocity area even flow dead zone at flow channel bending place, avoid vortex and cyclone, improve the heat exchange efficiency of cooling flow channel bending place, solve the problem of low local heat exchange efficiency of liquid cooling plate. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a three-dimensional structure schematic diagram of liquid cooling plate and battery according to an embodiment of the utility model.

[0029] Figure 2 It is a three-dimensional structure schematic diagram of liquid cooling plate according to an embodiment of the utility model.

[0030] Figure 3 It is the plan view of inside of liquid cooling plate according to an embodiment of the utility model.

[0031] Figure 4 It is a three-dimensional structure schematic diagram of plug and flow guide plate according to an embodiment of the utility model.

[0032] Figure 5 It is the enlarged view of A portion of Figure 4

[0033] Figure 6 It is the transverse section view of flow guide plate according to an embodiment of the utility model.

[0034] BRIEF DESCRIPTION OF DRAWINGS

[0035] Battery 1

[0036] Liquid cooling plate 2

[0037] Liquid cooling plate body 21

[0038] First tray 211

[0039] Second tray 212

[0040] Frame 22

[0041] Cooling flow channel 23

[0042] First flow channel 231

[0043] Second flow channel 232

[0044] Flow guide plate 24

[0045] First flow guide plate 241

[0046] Second flow guide plate 242

[0047] ​flow guide hole 243

[0048] first flow guide hole 2431

[0049] second flow guide hole 2432

[0050] camber surface 244

[0051] rib plate 25

[0052] plug 26

[0053] front plug 261

[0054] rear plug 262

[0055] liquid inlet plug 27

[0056] liquid outlet plug 28

[0057] cooling liquid flow direction X DETAILED DESCRIPTION

[0058] The utility model will be further illustrated by way of examples below, but the utility model is not limited in the following examples.

[0059] As Figures 1-3 shown, the embodiment provides a liquid cooling plate 2 for heat dissipation of a battery 1. The liquid cooling plate 2 comprises a plurality of cooling flow channels 23 for cooling liquid flow, and the battery 1 exchanges heat with the cooling liquid. The plurality of cooling flow channels 23 are arranged side by side, the end portions of the plurality of cooling flow channels 23 are communicated with each other, the liquid cooling plate 2 further comprises a flow guide plate 24 arranged at the end portion of the cooling flow channel 23, and the flow guide plate 24 is provided with a plurality of flow guide holes 243, so as to guide the flow direction of the cooling liquid, make the flow rate of the cooling liquid at the bending portion of the cooling flow channel 23 more uniform, avoid the low flow rate area or even the flow dead zone at the bending portion of the flow channel, avoid the vortex and cyclone, improve the heat exchange efficiency at the bending portion of the cooling flow channel 23, and solve the problem of low local heat exchange efficiency of the liquid cooling plate 2.

[0060] In the embodiment, the liquid cooling plate 2 comprises a liquid cooling plate body 21 and a frame 22, the liquid cooling plate body 21 is divided into a first tray 211 and a second tray 212, the first tray 211 and the second tray 212 are extruded by the same mold and are integrated by friction stir welding.

[0061] In the embodiment, the liquid cooling plate body 21 is extruded by aluminum profile, which is simple in structure and convenient to process. In other embodiments, other materials of the liquid cooling plate body 21 considered suitable by those skilled in the art can also be used.

[0062] In the embodiment, the flow guide plate 24 comprises a first flow guide plate 241 and a second flow guide plate 242, which are arranged at different positions. The first flow guide plate 241 is arranged at the boundary between adjacent cooling flow channels 23, so as to guide the flow direction of the cooling liquid at the boundary between the adjacent cooling flow channels 23, avoid the formation of a low flow rate area or even a flow dead zone at the boundary between the cooling flow channels 23, and make the cooling liquid flow more smoothly, thereby enabling more effective heat exchange.

[0063] The second flow guide plate 242 is arranged at the middle part of the adjacent two cooling flow channels 23, so as to guide the cooling liquid at the middle part of the adjacent two cooling flow channels 23. By arranging the second flow guide plate 242 on the basis of the first flow guide plate 241, the flow guiding effect of the flow guide plate 24 can be further improved, and the heat exchange effect of the liquid cooling plate 2 is better. In other embodiments, only the first flow guide plate 241 or the second flow guide plate 242 can be arranged.

[0064] In the embodiment, the liquid cooling plate 2 comprises a plurality of rib plates 25 arranged side by side and spaced apart to form the cooling flow channels 23, and the front and rear ends of the rib plates 25 are formed into bent passages through CNC processing. One end of the first flow guide plate 241 abuts against one end of the rib plate 25, so that the flow guide plate 24 can cover the entire bending part, and the cooling liquid can flow through the flow guide holes 243 on the flow guide plate 24 to make the flow guiding effect of the flow guide plate 24 better, and further improve the heat exchange effect of the liquid cooling plate 2. In other embodiments, other structures considered appropriate by those skilled in the art can be selected to form the cooling flow channels 23.

[0065] The extension direction of the flow guide plate 24 is consistent with the extension direction of the cooling flow channel 23, so that the flow guide plate 24 can better guide the flow direction of the cooling liquid, and further improve the heat exchange effect of the liquid cooling plate 2.

[0066] As shown in FIG. 1, Figures 4-6 The side of the flow guide plate 24 is an arc surface 244, which is arranged on the side of the flow guide plate 24 close to the inflow direction of the cooling liquid, and the arc surface 244 is curved toward the inflow direction of the cooling liquid, so as to better guide the inflow of the cooling liquid into the flow guide holes 243, and then flow into the adjacent cooling flow channels 23 through the flow guide holes 243.

[0067] In the embodiment, the plurality of flow guide holes 243 extend along the horizontal direction, and the extension direction of the flow guide holes 243 is consistent with the flow direction of the cooling liquid, so as to reduce the flow resistance of the cooling liquid and better guide the cooling liquid to the adjacent cooling flow channels 23. In other embodiments, other extension directions of the flow guide holes 243 considered appropriate by those skilled in the art can be selected.

[0068] In the embodiment, the flow guide hole 243 includes a first flow guide hole 2431 and a second flow guide hole 2432, the aperture of the first flow guide hole 2431 is larger than that of the second flow guide hole 2432, the first flow guide hole 2431 is arranged at the middle part of the flow guide plate 24, and the second flow guide hole 2432 is arranged at both sides of the first flow guide hole 2431. The apertures of the first flow guide hole 2431 and the second flow guide hole 2432 are different, because the flow of the cooling liquid at the middle part of the flow guide plate 24 is larger, the aperture of the first flow guide hole 2431 is set to be larger, which can not only reduce the flow resistance here, but also achieve the purpose of making the cooling liquid flow to the second flow guide holes 2432 at both sides, and the flow of the cooling liquid at both sides of the flow guide plate 24 is smaller, so the aperture of the second flow guide hole 2432 is set to be smaller, so as to make the cooling liquid supplement the low flow area at the bending part of the cooling flow channel 23 at both ends, so as to achieve the uniform flow of the cooling liquid, and further improve the flow guiding effect of the flow guide plate 24.

[0069] In other embodiments, only one aperture of the flow guide hole 243 can be arranged, or flow guide holes 243 with different apertures, densities and positions can be arranged, which can be selected by those skilled in the art according to actual conditions.

[0070] The liquid cooling plate 2 further includes plugs 26 arranged at both ends of the cooling flow channel 23, which are front plugs 261 and rear plugs 262 respectively, and the flow guide plate 24 is arranged on the plugs 26. In the processing, the plugs 26 are integrally formed with the flow guide plate 24, so as to be more convenient for the production and manufacturing of the flow guide plate 24, improve the production efficiency of the liquid cooling plate 2, and reduce the production cost.

[0071] In the embodiment, the front end and the rear end of the liquid cooling plate body 21 are cut by CNC to form positions for mounting the front plugs 261 and the rear plugs 262. The front plugs 261 and the rear plugs 262 are extruded by the same mold. The first tray 211, the second tray 212, the front plugs 261, the rear plugs 262, the liquid inlet plug 27 and the liquid outlet plug 28 are integrally formed by welding. In other embodiments, other suitable methods selected by those skilled in the art can be used to assemble the components.

[0072] In the embodiment, the flow guide plate 24 is formed by using the notched tooth process on the appropriate position of the plug 26, which is more convenient and lower in cost. In other embodiments, other suitable methods selected by those skilled in the art can be used to form the flow guide plate 24. The arc surface 244 of the flow guide plate 24 is formed by the arc of the notched tooth itself, so as to make the processing of the flow guide plate 24 more convenient.

[0073] The liquid cooling plate 2 comprises a liquid inlet and a liquid outlet, the liquid inlet plug 27 is arranged on the liquid inlet, and is used for conveying the cooling liquid into the cooling flow channel 23, the liquid outlet plug 28 is arranged on the liquid outlet, and is used for outputting the cooling liquid in the cooling flow channel 23, the cooling flow channel 23 comprises a first flow channel 231 and a second flow channel 232, the first flow channel 231 and the second flow channel 232 are communicated, the liquid inlet is arranged on the first flow channel 231, and the liquid outlet is arranged on the second flow channel 232. The cooling liquid enters the first flow channel 231 from the liquid inlet, then enters the second flow channel 232 from the first flow channel 231, and finally is discharged from the liquid outlet, and the liquid inlet and the liquid outlet are arranged on the same end of the liquid cooling plate 2, so that the maintenance of the liquid cooling plate 2 is more convenient.

[0074] In the description of the utility model, need understanding, the term "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "internal", "external" and so on indicate the orientation or position relation of device or element in normal use, only is for convenient description the utility model and simplifies the description, and is not indicate or imply the device or element that the indicated must have the specific orientation at any time, with specific orientation structure and operation, therefore cannot be understood as the restriction of the utility model in this aspect.

[0075] Although the specific embodiments of the utility model are described above, those skilled in the art should understand that this is only an example, the protection scope of the utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the utility model, but these changes and modifications all fall within the protection scope of the utility model.

Claims

1. A liquid-cooled plate, the liquid-cooled plate comprising a plurality of cooling channels for the flow of cooling liquid, the plurality of cooling channels being arranged in parallel and the ends of the plurality of cooling channels being interconnected, characterized in that, The liquid cooling plate also includes a guide plate, which is located at the end of the cooling channel and has multiple guide holes.

2. The liquid cooling plate as described in claim 1, characterized in that, The guide plate includes a first guide plate, which is disposed at the boundary between adjacent cooling channels.

3. The liquid cooling plate as described in claim 2, characterized in that, The liquid cooling plate includes multiple ribs, which are arranged side by side at intervals to form the cooling channel, and one end of the first guide plate abuts against one end of the rib.

4. The liquid cooling plate as described in claim 2, characterized in that, The guide plate also includes a second guide plate, which is disposed in the middle of two adjacent cooling channels.

5. The liquid cooling plate as described in claim 1, characterized in that, The extension direction of the guide plate is consistent with the extension direction of the cooling channel.

6. The liquid cooling plate as described in claim 1, characterized in that, One side of the guide plate is an arc surface, which is located on the side of the guide plate close to the direction of the cooling liquid inflow, and the arc surface is curved in the direction of the cooling liquid inflow.

7. The liquid cooling plate as described in claim 1, characterized in that, The plurality of flow guide holes extend in the horizontal direction.

8. The liquid cooling plate as described in claim 1, characterized in that, The flow guide hole includes a first flow guide hole and a second flow guide hole. The diameter of the first flow guide hole is larger than that of the second flow guide hole. The first flow guide hole is located in the middle of the flow guide plate, and the second flow guide hole is located on both sides of the first flow guide hole.

9. The liquid-cooled plate as described in claim 1, characterized in that, The liquid cooling plate also includes plugs, which are located at both ends of the cooling channel. The guide plate is located on the plugs, and the plugs and the guide plate are integrally formed.

10. The liquid-cooled plate as described in claim 1, characterized in that, The liquid cooling plate includes a liquid inlet and a liquid outlet, which are located at the same end of the liquid cooling plate. The cooling channel includes a first channel and a second channel, which are connected. The liquid inlet is located in the first channel, and the liquid outlet is located in the second channel.

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