Power battery micro-channel liquid cooling plate and processing technology thereof

Abstract

The invention discloses a power battery micro-channel liquid cooling plate and a processing technology thereof, and relates to the technical field of power batteries. According to the power battery micro-channel liquid cooling plate and the processing technology thereof, the power battery micro-channel liquid cooling plate comprises a mounting plate, and a liquid cooling mechanism and a bearing mechanism are arranged above the mounting plate; the bearing mechanism is located above the liquid cooling mechanism; the liquid cooling mechanism comprises a cover plate and heat conducting fins; the bearing mechanism comprises a bearing part and a mounting part; the bearing part comprises a bearing plate and a plurality of reinforcing blocks, the mounting part comprises two fixing plates and two sets of inserting plates, the bearing mechanism comprises the bearing plate, the reinforcing blocks and the mounting part composed of the two fixing plates and the two sets of inserting plates, the bottom face of the bearing plate makes contact with the top faces of the heat conduction fins, the bearing plate can be positioned through the fixing plates, and therefore the heat conduction fins can be fixed conveniently. The inserting plate is inserted into the bearing plate under the action of the spring and the damper, and the inserting plate is fixed by rotating the nut to extrude the connecting plate, so that the bearing mechanism can stably bear the battery.

Description

Technical Field

[0001] The present invention relates to the technical field of power batteries, and in particular to a power battery microchannel liquid cooling plate and a processing technology thereof. Background Art

[0002] Power batteries are the power source for tools, mostly referring to batteries that power electric cars, electric trains, electric bicycles, and golf carts. Power batteries are the core components of new energy vehicles;

[0003] During the operation of the power battery, a large amount of heat will be generated. If the heat is not dissipated in time, it will seriously affect the battery's service life, charging and discharging efficiency, and safety.

[0004] When the existing liquid cooling plate is subjected to the gravity of the battery, it will gradually bend, dent and other deformations. Once the liquid cooling plate is deformed, it will not only destroy its internal microchannel structure, affect the normal flow of the coolant, and reduce the heat dissipation efficiency, but also may cause poor contact with the battery, further affecting the heat dissipation effect of the battery and accelerating battery aging. Therefore, a power battery microchannel liquid cooling plate and its processing technology are proposed. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the present invention provides a power battery microchannel liquid cooling plate and a processing technology thereof, which solves the problem that the liquid cooling plate will gradually undergo deformation such as bending and concavity when bearing the gravity of the battery. Once the liquid cooling plate is deformed, it will not only destroy its internal microchannel structure, affect the normal flow of the coolant, and reduce the heat dissipation efficiency, but may also cause poor contact with the battery, further affecting the heat dissipation effect of the battery and accelerating the aging of the battery.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: comprising a mounting plate, a liquid cooling mechanism and a supporting mechanism are arranged above the mounting plate;

[0009] The supporting mechanism is located above the liquid cooling mechanism;

[0010] The liquid cooling mechanism includes a cover plate and heat conducting fins;

[0011] The supporting mechanism comprises a supporting portion and a mounting portion;

[0012] The supporting part includes a supporting plate and a plurality of reinforcing blocks, and the mounting part includes two fixing plates and two sets of plug-in plates;

[0013] The bottom surface of the support plate contacts the top surface of the heat-conducting fins, the inner side surface of the support plate is fixedly connected to the outer walls of multiple reinforcement blocks, the top surface of the cover plate is fixedly connected to the bottom surfaces of the two fixed plates, the top surfaces of the two fixed plates both slide through the bottom surfaces of the support plate and extend to the inside of the support plate, two mounting frames are fixedly provided on the outer walls of the two fixed plates, and the adjacent side surfaces of the two groups of plug-ins penetrate the outer walls of the two mounting frames and the outer wall of the support plate in turn and extend to the inside of the support plate.

[0014] Preferably, a microchannel liquid cooling tube is arranged on the inner side of the mounting plate, a heat conducting plate is fixedly arranged on the outer wall of the microchannel liquid cooling tube, and the top of the microchannel liquid cooling tube is in contact with the inner side surface of the cover plate. By arranging the microchannel liquid cooling tube and fixing the heat conducting plate on its outer wall, and cooperating with the heat conducting fins above, the heat generated by the battery can be effectively conducted to the microchannel liquid cooling tube.

[0015] Preferably, two groups of springs and two groups of dampers are fixedly arranged on the inner side surfaces of the two groups of extrusion frames, and the adjacent side surfaces of the two groups of springs and the two groups of dampers are fixedly connected to the outer walls of the two fixed plates, respectively. The initial states of the two groups of springs are both extended states, and the insert plate is inserted into the interior of the support plate under the action of the springs and the dampers.

[0016] Preferably, two groups of extrusion frames are fixedly provided on the side far away from the two groups of plug plates, two connecting plates are fixedly provided on the side far away from the two groups of extrusion frames, two threaded rods are fixedly provided on the outer walls of the two fixed plates, and the side far away from the two threaded rods respectively penetrates the two fixed plates and extends to the side far away from the two fixed plates.

[0017] Preferably, two nuts are respectively threadedly sleeved on the outer walls of the two threaded rods, and the adjacent sides of the two nuts are respectively in contact with the distant sides of the two connecting plates, and the plugging plates are fixed by rotating the nuts to squeeze the connecting plates.

[0018] Preferably, two connecting frames are fixedly provided on the outer wall of the mounting plate, the inner side surfaces of the two connecting frames are in contact with the top surface of the cover plate, and the two connecting frames are movably connected to the cover plate by two sets of bolts.

[0019] A processing technology of a power battery microchannel liquid cooling plate, based on the above-mentioned power battery microchannel liquid cooling plate, comprises the following steps:

[0020] Step 1: First, place the plate inside the punching device and punch out the mounting plate;

[0021] Step 2: Place the heat-conducting metal into the pipe processing device to obtain the microchannel liquid cooling pipe, place the heat-conducting metal into the machine tool to obtain the heat-conducting fins, place the heat-conducting metal inside the stamping device to obtain the cover plate and the heat-conducting plate, and then weld and fix the heat-conducting plate and the microchannel liquid cooling pipe;

[0022] Step 3: Place the high-strength heat-conducting metal into the mold and stamp it to obtain a support plate;

[0023] Step 4: Place the liquid cooling mechanism on top of the mounting plate, fix the liquid cooling mechanism through the connecting frame provided on top of the mounting plate, and finally install the supporting mechanism on top of the liquid cooling mechanism to complete the processing.

[0024] (III) Beneficial effects

[0025] The present invention provides a power battery microchannel liquid cooling plate and a processing technology thereof. It has the following beneficial effects:

[0026] 1. The supporting mechanism includes a supporting plate and a plurality of reinforcement blocks, and a mounting portion consisting of two fixing plates and two groups of plug-in plates. The bottom surface of the supporting plate contacts the top surface of the heat-conducting fins, and the fixing plate can position the supporting plate. The plug-in plate is inserted into the supporting plate under the action of the spring and the damper, and the plug-in plate is fixed by squeezing the connecting plate by rotating the nut. This structure enables the supporting mechanism to stably support the battery, while ensuring the stability of the overall structure, avoiding loosening of components due to vibration and other factors during use to affect the heat dissipation effect. The supporting plate can effectively support the power battery, thereby avoiding deformation of the liquid cooling plate.

[0027] 2. The power battery microchannel liquid cooling plate of the present invention can effectively conduct the heat generated by the battery to the microchannel liquid cooling tube by arranging a microchannel liquid cooling tube on the inner side of the mounting plate and fixing a temperature conducting plate on its outer wall, and cooperate with the heat conducting fins above, so as to carry away the heat through the refrigerant flowing in the tube, thereby achieving efficient heat dissipation, ensuring that the power battery works within an appropriate temperature range, and improving the performance and life of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 It is a structural schematic diagram of the liquid cooling mechanism of the present invention;

[0030] Figure 3 It is a schematic diagram of the structure inside the liquid cooling mechanism of the present invention;

[0031] Figure 4 It is a schematic diagram of the structure inside the supporting mechanism of the present invention;

[0032] Figure 5 It is a schematic diagram of the structure of the spring and the damper in the supporting mechanism of the present invention;

[0033] Figure 6 For the present invention Figure 4 Schematic diagram of the structure of the enlarged area A in the middle;

[0034] Figure 7 For the present invention Figure 5 Schematic diagram of the structure of the enlarged area B in the middle;

[0035] Figure 8 For the present invention Figure 5 Schematic diagram of the enlarged structure of area C in the middle.

[0036] In the figure: 1. mounting plate; 2. liquid cooling mechanism; 21. heat conducting fins; 22. cover plate; 23. connecting frame; 24. microchannel liquid cooling tube; 25. thermal conductive plate; 3. supporting mechanism; 31. supporting plate; 32. reinforcement block; 33. mounting frame; 34. connecting plate; 35. extrusion frame; 36. plug-in plate; 37. fixing plate; 38. spring; 39. damper; 310. threaded rod; 311. nut. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Example 1

[0039] See also Figure 1-8 , the present invention provides a technical solution: comprising a mounting plate 1, a liquid cooling mechanism 2 and a supporting mechanism 3 are arranged above the mounting plate 1;

[0040] The supporting mechanism 3 is located above the liquid cooling mechanism 2;

[0041] The liquid cooling mechanism 2 includes a cover plate 22 and heat conducting fins 21;

[0042] The supporting mechanism 3 includes a supporting portion and a mounting portion;

[0043] The supporting part includes a supporting plate 31 and a plurality of reinforcing blocks 32, and the mounting part includes two fixing plates 37 and two sets of plug plates 36;

[0044] The bottom surface of the support plate 31 contacts the top surface of the heat-conducting fin 21, the inner side surface of the support plate 31 is fixedly connected to the outer walls of the plurality of reinforcement blocks 32, the top surface of the cover plate 22 is fixedly connected to the bottom surfaces of the two fixing plates 37, the top surfaces of the two fixing plates 37 slide through the bottom surface of the support plate 31 and extend to the inside of the support plate 31, the outer walls of the two fixing plates 37 are respectively fixedly provided with two mounting frames 33, the adjacent side surfaces of the two groups of plug-in plates 36 respectively penetrate the outer walls of the two mounting frames 33 and the outer walls of the support plate 31 in sequence and extend to the inside of the support plate 31, the far side surfaces of the two groups of plug-in plates 36 are respectively fixedly provided with two groups of extrusion frames 35, and the inner sides of the two groups of extrusion frames 35 are respectively fixedly provided with two groups of springs 38 and two groups of dampers 39, the two groups of springs 38 and the two groups of dampers 39 are fixedly connected to the outer walls of the two fixing plates 37 on the adjacent sides, the two groups of springs 38 are in an extended state in the initial state, the two groups of extrusion frames 35 are respectively fixedly provided with two connecting plates 34 on the distant sides, the outer walls of the two fixing plates 37 are respectively fixedly provided with two threaded rods 310, the distant sides of the two threaded rods 310 respectively penetrate the two fixing plates 37 and extend to the distant sides of the two fixing plates 37, the outer walls of the two threaded rods 310 are respectively threadedly sleeved with two nuts 311, and the adjacent sides of the two nuts 311 are respectively in contact with the distant sides of the two connecting plates 34;

[0045] A microchannel liquid cooling tube 24 is arranged on the inner side of the mounting plate 1, and a temperature conducting plate 25 is fixedly arranged on the outer wall of the microchannel liquid cooling tube 24. The top of the microchannel liquid cooling tube 24 contacts the inner side surface of the cover plate 22. Two connecting frames 23 are fixedly arranged on the outer wall of the mounting plate 1. The inner sides of the two connecting frames 23 contact the top surface of the cover plate 22. The two connecting frames 23 are movably connected to the cover plate 22 by two sets of bolts.

[0046] Example 2

[0047] like Figure 1-Figure 5 As shown, based on the same concept as the above-mentioned embodiment 1, this embodiment also proposes a processing technology for a power battery microchannel liquid cooling plate, including the following steps:

[0048] Step 1: First, place the plate inside the punching device and punch out the mounting plate 1;

[0049] Step 2: Place the heat-conducting metal into the pipe processing device to obtain the microchannel liquid cooling tube 24, place the heat-conducting metal into the machine tool to obtain the heat-conducting fin 21, place the heat-conducting metal inside the stamping device to obtain the cover plate 22 and the heat-conducting plate 25, and then weld and fix the heat-conducting plate 25 to the microchannel liquid cooling tube 24;

[0050] Step 3: Place high-strength heat-conducting metal into a mold and stamp it to obtain a support plate 31;

[0051] Step 4: Place the liquid cooling mechanism 2 on the mounting plate 1, fix the liquid cooling mechanism 2 through the connecting frame 23 provided on the mounting plate 1, and finally install the supporting mechanism 3 on the liquid cooling mechanism 2 to complete the processing.

[0052] When in use, first place the microchannel liquid cooling tube 24 and the heat conducting plate 25 on the inner side of the mounting plate 1, and after the placement is completed, place the cover plate 22 and the heat conducting fins 21 above the microchannel liquid cooling tube 24 and the heat conducting plate 25, and the temperature can be conducted to the microchannel liquid cooling tube 24 through the heat conducting fins 21, and the refrigerant flowing through the inside of the microchannel liquid cooling tube 24 can take away the heat emitted by the battery, so as to dissipate heat, and then place the supporting plate 31 above the heat conducting fins 21; after the supporting plate 31 is placed, the supporting plate 31 can be positioned by two fixing plates 37, and the two groups of plug plates 36 can be inserted into the supporting plate 31 by two groups of springs 38 and two groups of dampers 39; after the two groups of plug plates 36 are inserted into the supporting plate 31, the two connecting plates 34 can be driven to move synchronously, and after the insertion is completed, the two connecting plates 34 can be squeezed by rotating the two nuts 311, and the two groups of plug plates 36 can be fixed when squeezing the two connecting plates 34;

[0053] After assembly, it is placed inside the battery pack, and the microchannel liquid cooling tube 24 is connected to the external circulation pipeline to ensure that the refrigerant can continuously circulate inside the microchannel liquid cooling tube 24. When the power battery generates heat, the heat is first absorbed by the heat conducting plate 25 in close contact with the battery. The heat conducting plate 25 is made of a material with high thermal conductivity and can quickly transfer the heat from the battery surface. Since the heat conducting plate 25 is fixed to the outer wall of the microchannel liquid cooling tube 24, the heat will be quickly transferred to the microchannel liquid cooling tube 24;

[0054] There is a refrigerant circulating inside the microchannel liquid cooling tube 24. When the heat is transferred to the microchannel liquid cooling tube 24, the refrigerant continuously absorbs the heat from the outside of the tube during the flow process, thereby taking the heat away. In order to enhance the heat dissipation effect, a heat conducting fin 21 is arranged above the microchannel liquid cooling tube 24. The heat conducting fin 21 has a large surface area, which can increase the contact area with the power battery, so that the heat can be introduced into the microchannel liquid cooling tube 24 more quickly.

[0055] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0056] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A power battery microchannel liquid cooling plate, comprising a mounting plate (1), characterized in that: A liquid cooling mechanism (2) and a supporting mechanism (3) are arranged above the mounting plate (1); The supporting mechanism (3) is located above the liquid cooling mechanism (2); The liquid cooling mechanism (2) comprises a cover plate (22) and heat conducting fins (21); The supporting mechanism (3) comprises a supporting portion and a mounting portion; The supporting part includes a supporting plate (31) and a reinforcing block (32), and the mounting part includes two fixing plates (37) and two groups of plug plates (36); The bottom surface of the support plate (31) contacts the top surface of the heat-conducting fins (21); the inner side surface of the support plate (31) is fixedly connected to the outer walls of the plurality of reinforcement blocks (32); the top surface of the cover plate (22) is fixedly connected to the bottom surfaces of the two fixing plates (37); the top surfaces of the two fixing plates (37) slide through the bottom surface of the support plate (31) and extend to the inside of the support plate (31); two mounting frames (33) are fixedly arranged on the outer walls of the two fixing plates (37); and the adjacent side surfaces of the two groups of plug plates (36) respectively penetrate the outer walls of the two mounting frames (33) and the outer wall of the support plate (31) in sequence and extend to the inside of the support plate (31).

2. A power battery microchannel liquid cooling plate according to claim 1, characterized in that: A microchannel liquid cooling tube (24) is arranged on the inner side of the mounting plate (1), a temperature conducting plate (25) is fixedly arranged on the outer wall of the microchannel liquid cooling tube (24), and the upper side of the microchannel liquid cooling tube (24) is in contact with the inner side surface of the cover plate (22).

3. A power battery microchannel liquid cooling plate according to claim 1, characterized in that: Two groups of extrusion frames (35) are fixedly arranged on the far side of the two groups of plug plates (36), and two groups of springs (38) and two groups of dampers (39) are fixedly arranged on the inner side of the two groups of extrusion frames (35). The adjacent side of the two groups of springs (38) and the two groups of dampers (39) are fixedly connected to the outer walls of the two fixed plates (37), and the initial state of the two groups of springs (38) is an extended state.

4. A power battery microchannel liquid cooling plate according to claim 3, characterized in that: Two connecting plates (34) are fixedly provided on the far side of the two groups of extrusion frames (35), two threaded rods (310) are fixedly provided on the outer walls of the two fixing plates (37), and the far side of the two threaded rods (310) respectively penetrates the two fixing plates (37) and extends to the far side of the two fixing plates (37).

5. A power battery microchannel liquid cooling plate according to claim 4, characterized in that: Two nuts (311) are respectively threadedly sleeved on the outer walls of the two threaded rods (310), and the adjacent side surfaces of the two nuts (311) are respectively in contact with the distant side surfaces of the two connecting plates (34).

6. A power battery microchannel liquid cooling plate according to claim 2, characterized in that: Two connecting frames (23) are fixedly arranged on the outer wall of the mounting plate (1), the inner side surfaces of the two connecting frames (23) are in contact with the top surface of the cover plate (22), and the two connecting frames (23) are movably connected to the cover plate (22) via two groups of bolts.

7. A processing technology for a power battery microchannel liquid cooling plate, characterized in that: The following steps are involved: Step 1: firstly, a plate is placed inside a punching device and punched to obtain a mounting plate (1); Step 2: placing the heat-conducting metal into a pipe processing device to obtain a microchannel liquid cooling pipe (24), placing the heat-conducting metal into a machine tool to obtain a heat-conducting fin (21), placing the heat-conducting metal inside a stamping device to obtain a cover plate (22) and a heat-conducting plate (25), and then welding and fixing the heat-conducting plate (25) and the microchannel liquid cooling pipe (24); Step 3: placing high-strength heat-conducting metal into a mold and stamping to obtain a support plate (31); Step 4: Place the liquid cooling mechanism (2) on top of the mounting plate (1), fix the liquid cooling mechanism (2) via a connecting frame (23) disposed on top of the mounting plate (1), and finally install the supporting mechanism (3) on top of the liquid cooling mechanism (2) to complete the processing.

Images