Power battery buckling and pressing type liquid cooling plate

Abstract

The invention relates to the technical field of liquid cooling plates, in particular to a power battery buckling type liquid cooling plate which comprises a liquid cooling plate body used as a device body, grooves are formed in the opposite sides of a top plate and a bottom plate, and a fixing mechanism used for buckling and fixing the top plate and the bottom plate is arranged on the liquid cooling plate body. And a liquid cooling mechanism for stably cooling the power battery is arranged in the liquid cooling plate main body. According to the buckling and pressing type liquid cooling plate for the power battery, the top plate and the bottom plate can be connected in a buckling and pressing mode through the fixing mechanisms, two special-shaped elastic blocks are pressed inwards at the same time under the action of partition blocks, and at the moment, arc-shaped plates at the bottoms of the special-shaped elastic blocks are inserted into circular holes; when the two special-shaped elastic blocks at the bottom of the same fixing block are completely located in the round holes, the two arc-shaped plates are attached to the bottom wall of the bottom plate, at the moment, the top plate and the bottom plate are connected, the limiting grooves are further fixed through the limiting assemblies, and therefore the top plate and the bottom plate can be easily and conveniently disassembled and assembled.

Description

Technical Field

[0001] The invention relates to the technical field of liquid cooling plates, and in particular to a press-fit liquid cooling plate for a power battery. Background Art

[0002] The power battery liquid cooling plate is a key technology used in electric vehicle battery systems. Its main function is to provide heat dissipation and temperature control for the battery system. The entire liquid cooling plate is composed of multiple cooling plates. There are pipes spaced a certain distance between the cooling plates. The fluid circulates in the pipes and dissipates the heat of the battery module to the heat sink through the cooling plate.

[0003] In the prior art, the upper and lower cover plates of the liquid cooling plate are connected by welding, which makes the overall weight of the liquid cooling plate heavy, resulting in low energy density of the overall structure. In addition, the disassembly and assembly process takes a long time, which is not conducive to the maintenance and replacement of the internal liquid cooling pipes, thereby affecting the heat dissipation effect of the power battery. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a power battery buckled liquid cooling plate, which has the advantage of being able to easily disassemble and assemble the liquid cooling plate, thereby solving the problem in the prior art that the disassembly and assembly of the liquid cooling plate takes a long time, which is not conducive to the maintenance and replacement of the internal liquid cooling pipes.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A power battery buckle-type liquid cooling plate, comprising a liquid cooling plate body used as a device body, the liquid cooling plate body comprising a top plate and a bottom plate, grooves are provided on opposite sides of the top plate and the bottom plate, a fixing mechanism for buckling and fixing the top plate and the bottom plate is provided on the liquid cooling plate body, a liquid cooling mechanism for stably cooling the power battery is provided inside the liquid cooling plate body, the fixing mechanism comprises circular holes provided on a plurality of top plates and a plurality of bottom plates, a plurality of circular holes on the top plates are fixedly connected to fixing blocks, two special-shaped elastic blocks are fixedly connected to the bottom of the fixing blocks, a spacer block is fixedly connected between every two of the special-shaped elastic blocks, an arc plate is fixedly connected to the bottom of the plurality of special-shaped elastic blocks, a limiting groove is provided on one side of the plurality of arc plates, and a limiting component for limiting and fixing the plurality of arc plates is provided on the bottom plate.

[0007] Furthermore, the limiting assembly includes a connecting plate fixedly connected to one side of the base plate, a plurality of slots are provided on one side of the connecting plate, a square slot is provided on the other side of the base plate, a square block is clamped in the square slot, a mounting plate is fixedly connected to one side of the square block, and a plurality of limiting plates are fixedly connected to one side of the mounting plate.

[0008] Furthermore, the liquid cooling mechanism includes a through hole opened on the top plate, a liquid cooling pipe is installed in the groove, a liquid inlet pipe is installed at the through hole, a plurality of spoiler components are installed in the liquid cooling pipe, a hole is opened on one side of the bottom plate, and a liquid outlet pipe is installed at the through hole.

[0009] Furthermore, the spoiler assembly includes a connecting ring, which is movably connected with a plurality of round beads and spherical balls which are distributed on its inner wall in an interlaced manner. The plurality of round beads form a porous medium in the liquid cooling tube, and the coolant forms turbulence when flowing through the plurality of round beads to increase the heat transfer area of ​​the liquid cooling tube. The spherical ball is located between two adjacent round beads to extend the turbulent state at the round beads and expand the flow area of ​​the coolant inside the liquid cooling tube.

[0010] Furthermore, the plurality of limiting plates may be respectively engaged with the plurality of limiting grooves, and the diameters of the plurality of arc-shaped plates are all greater than the diameters of the plurality of circular holes.

[0011] Furthermore, the liquid inlet pipe is located at the center of the top plate, and the liquid outlet pipe is located at the edge of the bottom plate.

[0012] Furthermore, the round beads are stainless steel beads with a hole of 4 mm in diameter, and the spherical balls are stainless steel beads with a diameter of 3 mm.

[0013] Furthermore, the liquid cooling tube is distributed in a circle in the groove, and a plurality of the slots fit with one end of a plurality of limit plates.

[0014] By means of the above technical solution, the present invention provides a power battery buckled liquid cooling plate, which has at least the following beneficial effects:

[0015] 1. This type of power battery buckle-type liquid cooling plate, by setting a fixing mechanism, enables the device to buckle and connect the top plate and the bottom plate. Under the action of the spacer, the two special-shaped elastic blocks are pressed inward at the same time. At this time, the arc plate at the bottom of the special-shaped elastic block is inserted into the round hole. When the two special-shaped elastic blocks at the bottom of the same fixed block are completely located in the round hole, the two arc plates are attached to the bottom wall of the bottom plate. At this time, the top plate and the bottom plate are connected. The limiting groove is further fixed by the limiting assembly, so that the top plate and the bottom plate can be easily disassembled and assembled.

[0016] 2. This type of power battery buckled liquid cooling plate improves the heat dissipation effect of the coolant on the central part of the power battery by setting the liquid inlet pipe at the center of the top plate. Since the heat generated by the power battery is transferred from the center of the battery to the outside, the heat of the power battery gradually decreases from the center to the outside. Therefore, the cooling effect of the coolant can adapt to the heat of different areas of the power battery, thereby ensuring the heat dissipation effect of the power battery.

[0017] 3. This type of power battery buckled liquid cooling plate further improves the heat dissipation effect of the coolant by setting a spoiler component. The round balls make the flow path of the coolant in the flow channel more complicated, forming more turbulence and eddies, thereby increasing the turbulence intensity of the fluid. The round balls form a fin-like structure in the flow channel, thereby increasing the surface area of ​​the flow channel and providing more heat transfer surfaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application:

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0020] Figure 2 It is an exploded view of the main body of the liquid cooling plate of the present invention;

[0021] Figure 3 It is an enlarged view of the local structure of the fixing mechanism A of the present invention;

[0022] Figure 4 It is a schematic cross-sectional structure diagram of the liquid cooling mechanism of the present invention;

[0023] Figure 5 An exploded view of the liquid cooling mechanism of the present invention;

[0024] Figure 6 It is a schematic structural diagram of the spoiler assembly of the present invention.

[0025] Reference numerals:

[0026] 1. Liquid cooling plate body; 101. Top plate; 102. Bottom plate; 2. Fixing mechanism; 201. Round hole; 202. Fixing block; 203. Spacer; 204. Special-shaped elastic block; 205. Arc plate; 206. Limiting groove; 207. Limiting assembly; 2071. Connecting plate; 2072. Slot; 2073. Square groove; 2074. Mounting plate; 2075. Limiting plate; 3. Liquid cooling mechanism; 301. Through hole; 302. Liquid inlet pipe; 303. Liquid cooling pipe; 304. Baffle assembly; 3041. Connecting ring; 3042. Round bead; 3043. Round ball; 305. Perforation; 306. Liquid outlet pipe. DETAILED DESCRIPTION

[0027] 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.

[0028] A power battery buckled liquid cooling plate provided by some embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0029] Embodiment 1:

[0030] In the liquid cooling plate used in the prior art, the upper and lower cover plates are connected by welding, which makes the overall weight of the liquid cooling plate heavy, resulting in low energy density of the overall structure, and the time consumed in the disassembly and assembly process is long, which is not conducive to the maintenance and replacement of the internal liquid cooling pipe, thereby affecting the heat dissipation effect of the power battery. In order to repair and replace the damaged liquid cooling pipe, combined with Figure 1 , Figure 2 and Figure 3 as well as Figure 5 As shown, a power battery buckle-type liquid cooling plate is proposed, by setting a liquid cooling plate body 1 as the device body, the liquid cooling plate body 1 is mainly composed of a top plate 101 and a bottom plate 102, and grooves are provided on the opposite sides of the top plate 101 and the bottom plate 102. A fixing mechanism 2 is provided on the liquid cooling plate body 1, and the fixing mechanism 2 is used to buckle and fix the top plate 101 and the bottom plate 102. A liquid cooling mechanism 3 is provided inside the liquid cooling plate body 1, and the liquid cooling mechanism 3 is used to efficiently cool the power battery.

[0031] In order to facilitate the disassembly and assembly of the liquid cooling plate body 1, a fixing mechanism 2 is proposed, wherein circular holes 201 are provided on multiple top plates 101 and multiple bottom plates 102, and the circular holes 201 on the multiple top plates 101 are fixedly connected with fixing blocks 202, and the bottoms of the fixing blocks 202 are fixedly connected with two special-shaped elastic blocks 204, and a spacer 203 is fixedly connected between every two special-shaped elastic blocks 204, and the bottoms of the multiple special-shaped elastic blocks 204 are fixedly connected with arc plates 205, and one side of the multiple arc plates 205 is provided with limiting grooves 206, and a limiting component 207 is provided on the bottom plate 102, and the limiting component 207 is used to limit and fix the multiple arc plates 205, and the multiple circular holes 201 correspond to the multiple fixing blocks 202 one by one, and the multiple fixing blocks 202 are used to fix the multiple arc plates 205. Multiple special-shaped elastic blocks 204 are fixed to make the top plate 101 and the bottom plate 102 face each other. At this time, the multiple fixed blocks 202 are opposite to the multiple circular holes 201. The pressing adjustment range of the two special-shaped elastic blocks 204 on the same fixed block 202 is blocked by the spacer block 203. The staff presses the two special-shaped elastic blocks 204 at the same time. At this time, the arc plate 205 at the bottom of the special-shaped elastic block 204 is inserted into the circular hole 201. When the two special-shaped elastic blocks 204 at the bottom of the same fixed block 202 are completely located in the circular hole 201, the two arc plates 205 are attached to the bottom wall of the bottom plate 102. Since the diameters of the multiple arc plates 205 are larger than the diameters of the multiple circular holes 201, when the two special-shaped elastic blocks 204 are reset, the top plate 101 and the bottom plate 102 are connected.

[0032] In order to further limit and fix the multiple arc plates 205, a limiting assembly 207 is proposed, which is fixedly connected to a connecting plate 2071 on one side of the bottom plate 102, and a plurality of slots 2072 are provided on one side of the connecting plate 2071. A square slot 2073 is provided on the other side of the bottom plate 102. A square block is clamped in the square slot 2073. A mounting plate 2074 is fixedly connected to one side of the square block. A plurality of limiting plates 2075 are fixedly connected to one side of the mounting plate 2074. The plurality of limiting plates 2075 can be clamped with the plurality of limiting slots 206 respectively. Each slot 2072 is matched with one end of the multiple limit plates 2075. When the multiple curved plates 205 are attached to the bottom wall of the base plate 102, by connecting the square block on the mounting plate 2074 with the square slot 2073, one end of the multiple limit plates 2075 is made to correspond to the slot 2072 on the connecting plate 2071. The multiple limit plates 2075 can be matched with the limit slots 206 on each curved plate 205, thereby further fixing the positions of the multiple curved plates 205 and further ensuring the connection effect between the top plate 101 and the base plate 102.

[0033] Embodiment 2:

[0034] In order to achieve a greater heat dissipation effect on different areas of the power battery, combined with Figure 2 and Figure 4 as well as Figure 5 As shown, a liquid cooling mechanism 3 is proposed, by opening a through hole 301 on the top plate 101, a liquid cooling pipe 303 is installed in the groove, a liquid inlet pipe 302 is installed at the through hole 301, a plurality of spoiler components 304 are installed in the liquid cooling pipe 303, a through hole 305 is opened on one side of the bottom plate 102, and a liquid outlet pipe 306 is installed at the through hole 305. Since the temperature distribution inside the power battery is not linear during the charging and discharging process, the temperature gradient between adjacent isothermal layers near the center of the battery is small, while the temperature gradient near the surface area of ​​the battery is large, so that the heat accumulated from the center of the power battery to the outside is gradually reduced, and the liquid cooling pipe 303 is arranged in a winding manner in the groove The circular distribution enables the coolant to have a good heat dissipation effect on the power battery during the flow process. At the same time, since the liquid inlet pipe 302 is located at the center of the top plate 101 and the liquid outlet pipe 306 is located at the edge of the bottom plate 102, the overall temperature of the coolant at the center is lower, thereby improving the heat dissipation effect of the coolant on the central area of ​​the power battery. At the same time, since there is less heat accumulation in the outer area, the coolant can also effectively dissipate the heat in the outer area after dissipating the heat in the central area, avoiding uneven heat dissipation on the surface of the liquid cold plate body 1, so that the cooling effect of the coolant can adapt to the heat of different areas of the power battery, thereby ensuring the heat dissipation effect of the power battery.

[0035] Embodiment three:

[0036] In order to further improve the heat dissipation effect of the coolant during the flow process, combined with Figure 4 and Figure 6 As shown, a spoiler component 304 is proposed, wherein a plurality of connecting rings 3041 are movably installed on the inner wall of a liquid cooling tube 303, and a plurality of round beads 3042 and round balls 3043 are movably connected to the connecting rings 3041 and are staggeredly distributed on the inner wall thereof. The round beads 3042 are stainless steel beads with a diameter of 4 mm, and the round balls 3043 are stainless steel beads with a diameter of 3 mm. A porous medium is formed in the liquid cooling tube 303 by the plurality of round beads 3042. When the coolant flows through the round beads 3042, the flow path of the coolant in the flow channel becomes more complicated, forming more turbulence and eddies, thereby increasing the turbulence intensity of the fluid. Such a complex flow path helps to improve the heat transfer efficiency, because turbulence can better The thermal boundary layer is destroyed, the area and efficiency of heat transfer are increased, and a rib-like structure is formed in the flow channel through the balls 3043. When the coolant flows through the multiple balls 3042, different turbulence and eddies are formed near the multiple balls 3042. Since the multiple balls 3043 are located between the multiple balls 3042, the multiple balls 3043 continue to move under the action of turbulence and eddies, so that the coolant increases the flow area of ​​the coolant in the liquid cooling tube 303 when it flows near the multiple balls 3043, thereby providing more heat transfer surfaces. This structure not only increases the heat transfer area, but also improves the heat transfer efficiency by increasing the disturbance of the fluid, thereby greatly improving the heat dissipation effect of the liquid cooling plate body 1 on the power battery.

[0037] Among them, the open-pore stainless steel beads with a diameter of 4mm and the stainless steel beads with a diameter of 3mm both have a strong heat transfer enhancement effect and relatively low flow resistance. At the same porosity, the heat exchange Nu number is about 3 times that of the radiator without stainless steel beads. At the same time, due to the larger contact area between small-particle fillers, heat conduction is mainly carried out through direct contact between fillers, thereby improving thermal conductivity, allowing small-particle stainless steel beads to fill the space more tightly and form a more effective heat conduction network, thereby greatly reducing the surface temperature of the power battery.

[0038] It should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes 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 apparatus.

[0039] 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 buckle type liquid cooling plate, comprising a liquid cooling plate body (1) used as a device body, the liquid cooling plate body (1) comprising a top plate (101) and a bottom plate (102), the top plate (101) and the bottom plate (102) having grooves on opposite sides, characterized in that: The liquid cooling plate body (1) is provided with a fixing mechanism (2) for pressing and fixing the top plate (101) and the bottom plate (102), and the liquid cooling plate body (1) is provided with a liquid cooling mechanism (3) for stably cooling the power battery inside; The fixing mechanism (2) comprises circular holes (201) provided on a plurality of top plates (101) and a plurality of bottom plates (102); a fixing block (202) is fixedly connected in each of the circular holes (201) on the plurality of top plates (101); two special-shaped elastic blocks (204) are fixedly connected to the bottom of each of the fixing blocks (202); a spacer (203) is fixedly connected between each two of the special-shaped elastic blocks (204); an arc-shaped plate (205) is fixedly connected to the bottom of each of the special-shaped elastic blocks (204); a limiting groove (206) is provided on one side of each of the plurality of arc-shaped plates (205); and a limiting component (207) for limiting and fixing the plurality of arc-shaped plates (205) is provided on the bottom plate (102).

2. A power battery buckled liquid cooling plate according to claim 1, characterized in that: The limiting assembly (207) comprises a connecting plate (2071) fixedly connected to one side of the base plate (102); a plurality of slots (2072) are provided on one side of the connecting plate (2071); a square slot (2073) is provided on the other side of the base plate (102); a square block is clamped in the square slot (2073); a mounting plate (2074) is fixedly connected to one side of the square block; and a plurality of limiting plates (2075) are fixedly connected to one side of the mounting plate (2074).

3. A power battery buckled liquid cooling plate according to claim 2, characterized in that: The liquid cooling mechanism (3) comprises a through hole (301) provided on the top plate (101), a liquid cooling tube (303) being installed in the groove, a liquid inlet tube (302) being installed at the through hole (301), a plurality of spoiler components (304) being installed in the liquid cooling tube (303), and a through hole being provided on one side of the bottom plate (102), a liquid outlet tube (306) being installed at the through hole.

4. A power battery buckled liquid cooling plate according to claim 3, characterized in that: The spoiler component (304) comprises a connecting ring (3041), and the connecting ring (3041) is movably connected with a plurality of round beads (3042) and round balls (3043) which are distributed on its inner wall in an interlaced manner. The plurality of round balls (3042) form a porous medium in the liquid cooling tube (303), and the coolant forms turbulence when flowing through the plurality of round balls (3042) to increase the heat transfer area of ​​the liquid cooling tube (303). The round ball (3043) is located between two adjacent round balls (3042) to extend the turbulent state at the round balls (3042) and expand the flow channel area of ​​the coolant inside the liquid cooling tube (303).

5. The power battery buckled liquid cooling plate according to claim 2, characterized in that: The plurality of limiting plates (2075) can be respectively engaged with the plurality of limiting grooves (206), and the diameters of the plurality of arc-shaped plates (205) are all greater than the diameters of the plurality of circular holes (201).

6. The power battery buckled liquid cooling plate according to claim 3, characterized in that: The liquid inlet pipe (302) is located at the center of the top plate (101), and the liquid outlet pipe (306) is located at the edge of the bottom plate (102).

7. The power battery buckled liquid cooling plate according to claim 4, characterized in that: The round bead (3042) is a stainless steel bead with a hole of 4 mm in diameter, and the round ball (3043) is a stainless steel bead with a diameter of 3 mm.

8. The power battery buckled liquid cooling plate according to claim 3, characterized in that: The liquid cooling tube (303) is distributed in a circle in the groove, and the plurality of slots (2072) fit with one end of the plurality of limit plates (2075).

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