Brazing cold plate fixing and protecting structure of liquid cooling energy storage cabinet

Abstract

The utility model belongs to the technical field of energy storage cabinets, and relates to a brazing cold plate fixing and protecting structure of a liquid cooling energy storage cabinet, which comprises a liquid cooling bottom plate, longitudinal reinforcing ribs, transverse reinforcing ribs, a liquid cooling pipeline and a bottom supporting plate, and the liquid cooling bottom plate and the bottom supporting plate clamp the longitudinal reinforcing ribs, the transverse reinforcing ribs and the liquid cooling pipeline in a layered manner; the longitudinal reinforcing ribs and the transverse reinforcing ribs are arranged in a criss-cross manner, the longitudinal reinforcing ribs are arranged at intervals in parallel in a bar grid shape, the liquid cooling pipelines are bent and coiled in spaces spaced by bar grids of the longitudinal reinforcing ribs, and the liquid cooling pipelines are attached to the lower bottom surface of the liquid cooling bottom plate in a heat conduction manner; according to the utility model, the easily-damaged area at the lower edge of the liquid-cooled bottom plate can be effectively protected; the longitudinal supporting reinforcing ribs are arranged in the sealing welding area of the cold plate and the battery cell bottom plate, and the transverse supporting reinforcing ribs are in contact with the cavity runner, so that the overall weight is uniformly shared, and the whole PACK is safe and reliable in the packaging, transporting and mounting processes.

Description

Technical Field

[0001] The utility model belongs to the technical field of energy storage cabinets and relates to a brazing cold plate fixing and protecting structure of a liquid-cooled energy storage cabinet. Background Art

[0002] Energy storage cabinets are a type of equipment specially designed to store electrical energy. They have a wide range of application scenarios and play an important role in power systems, renewable energy utilization, home backup power supplies, and specific industry applications. Energy storage cabinets are of great significance to improving energy efficiency, promoting the popularization of renewable energy, and enhancing the flexibility and reliability of power systems through their high-efficiency energy storage and release capabilities. In existing liquid-cooled energy storage systems, the bottom area of ​​the PACK liquid cooling plate is directly exposed to the outside. This method is very likely to cause damage to the product structure after collision or extrusion during production, installation, and transportation. Since the liquid cooling bottom plate itself contains a hollow cavity flow channel, it is very easy to be damaged and difficult to detect during transportation and installation, which leads to serious quality problems in energy storage products and threatens the safety of the energy storage system.

[0003] Therefore, a device capable of ensuring a liquid cooling bottom plate structure is needed to solve the above technical problems. Utility Model Content

[0004] In view of the fact that the bottom of the PACK liquid cooling plate in the existing liquid-cooled energy storage system is easily damaged due to collision and extrusion, the utility model discloses a bottom tray protection and reinforcement device, which adopts sheet metal to support the liquid cooling bottom plate in a staggered manner horizontally and vertically, and has a bottom tray on the outside to fully protect the liquid cooling plate structure; in addition, the supporting structure has openings, which not only ensures safe support but also reduces the overall weight, thereby improving the overall quality of the product and the stable operation cycle of the energy storage system.

[0005] The technical solution adopted by the utility model to solve the technical problem is: a brazed cold plate fixing protection structure of a liquid-cooled energy storage cabinet, comprising: a liquid-cooled bottom plate, longitudinal reinforcing ribs, transverse reinforcing ribs, a liquid-cooled pipe, and a bottom support plate, wherein the lower bottom surface of the liquid-cooled bottom plate and the upper surface of the bottom support plate clamp the longitudinal reinforcing ribs, the transverse reinforcing ribs, and the liquid-cooled pipes in layers between the liquid-cooled bottom plate and the bottom support plate; the longitudinal reinforcing ribs and the transverse reinforcing ribs are arranged crisscrossed, the upper edge of the longitudinal reinforcing ribs is pressed against the lower bottom surface of the liquid-cooled bottom plate, the lower edge of the transverse reinforcing ribs is pressed against the upper surface of the bottom support plate, and the lower edge of the longitudinal reinforcing ribs is fixedly connected to the upper edge of the transverse reinforcing ribs from top to bottom;

[0006] The longitudinal reinforcing ribs are arranged in parallel at intervals in the shape of a grating, and the liquid cooling pipe is bent and coiled in the spaces between the longitudinal reinforcing ribs. The outer diameter of the liquid cooling pipe is smaller than the thickness of the longitudinal reinforcing ribs in the vertical direction, and the liquid cooling pipe is thermally conductively attached to the lower bottom surface of the liquid cooling base plate.

[0007] Preferably, the upper surface of the liquid cooling bottom plate is also thermally conductively bonded with a battery bottom plate, and the battery and / or control device of the energy storage cabinet are carried on the battery bottom plate.

[0008] More preferably, the upper surface of the liquid cooling base plate is also covered with a groove-shaped upper cover opening downward, and the upper cover seals the battery cell base plate and the device buckle cover on the battery cell base plate to the upper surface of the liquid cooling base plate.

[0009] Preferably, the longitudinal reinforcing ribs, the transverse reinforcing ribs and the bottom support plate are connected by welding, the liquid cooling bottom plate and the liquid cooling pipe are connected by welding, and the liquid cooling bottom plate and the bottom support plate are connected in a detachable manner.

[0010] More preferably, the detachable connection method between the liquid cooling base plate and the bottom support plate includes: threaded connection, bolt connection, and snap connection.

[0011] Preferably, the liquid cooling pipeline is provided with a coolant inlet and outlet, and a butt joint and a butt valve are provided on the coolant inlet and outlet.

[0012] Preferably, a flexible sealing insulation ring is provided at the edge of the interlayer between the liquid cooling bottom plate and the bottom supporting plate.

[0013] Preferably, the bottom support plate is provided with openings at the front and rear for lifting with hooks, and fixed angle pieces are provided on both sides of the bottom support plate for cooperating with the battery rack.

[0014] The beneficial effects of the utility model are:

[0015] 1. The utility model uses crisscrossed longitudinal and transverse reinforcing ribs, and the longitudinal and transverse reinforcing ribs are layered and fixed at the intersecting points, and then the liquid cooling pipe is arranged in the bar-shaped interval of the longitudinal reinforcing ribs, so that the liquid cooling pipe is well protected, and the supporting reinforcing ribs and the bottom support plate structure can protect the brazed cold plate from being damaged by external forces from bottom to top.

[0016] 2. The utility model forms an anti-deformation protection structure by welding the longitudinal reinforcing ribs, the transverse reinforcing ribs and the bottom support plate, and connects the liquid-cooling bottom plate and the liquid-cooling pipe to form a liquid-cooling cooling structure. The two structures are connected in a detachable manner to facilitate their respective inspection and maintenance, and the protection structure and the cooling structure do not interfere with each other, thereby ensuring the safety of the liquid-cooling pipe, making the protection structure and the cooling structure easy to maintain and replace: the bottom support plate is integrally welded and detachably fixed to the brazed cold plate, so it can be directly disassembled without damaging other structures, making it easier to maintain and replace.

[0017] 3. The utility model has holes at the front and back of the bottom support plate to reserve hook positions, which can be used directly during installation and lifting; the fixed angle pieces on both sides can cooperate with the battery rack, which plays a more critical role in PACK installation and improves safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the installation and decomposition of the brazed cold plate fixing protection structure of a liquid-cooled energy storage cabinet;

[0019] Figure 2 This is a bottom view of the liquid cooling base plate with liquid cooling pipe reinforcement ribs;

[0020] Figure 3 This is a schematic diagram of the installation of the liquid cooling base plate and bottom support plate;

[0021] Figure 4 It is a schematic diagram of a brazed cold plate fixing protection structure with an upper cover.

[0022] Among them, 1. Liquid cooling base plate; 2. Longitudinal reinforcement ribs; 3. Horizontal reinforcement ribs; 4. Liquid cooling pipes; 5. Bottom support plate; 6. Battery cell base plate; 7. Upper cover. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the relevant technologies in the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figures 1 to 4 As shown, a brazed cold plate fixing protection structure of a liquid-cooled energy storage cabinet comprises: a liquid-cooling bottom plate 1, longitudinal reinforcing ribs 2, transverse reinforcing ribs 3, a liquid-cooling pipe 4, and a bottom support plate 5. The lower bottom surface of the liquid-cooling bottom plate 1 and the upper surface of the bottom support plate 5 sandwich the longitudinal reinforcing ribs 2, the transverse reinforcing ribs 3, and the liquid-cooling pipe 4 between the liquid-cooling bottom plate 1 and the bottom support plate 5 in layers; the longitudinal reinforcing ribs 2 and the transverse reinforcing ribs 3 are arranged in a criss-cross pattern, the upper edge of the longitudinal reinforcing ribs 2 is against the lower bottom surface of the liquid-cooling bottom plate 1, and the transverse reinforcing ribs 3 are arranged in a criss-cross pattern. The lower edge is pressed against the upper surface of the bottom support plate 5, and the lower edge of the longitudinal reinforcing rib 2 is fixedly connected to the upper edge of the transverse reinforcing rib 3 from top to bottom; the pressing or contacting sequence from top to bottom is that the bottom surface of the liquid cooling bottom plate 1 is pressed against the longitudinal reinforcing rib 2, the longitudinal reinforcing rib 2 is fixedly connected to the transverse reinforcing rib 3, and the bottom of the transverse reinforcing rib 3 is pressed against the upper surface of the bottom support plate 5. Therefore, when an external force is transmitted from bottom to top, the path of external force transmission is: bottom support plate 5, transverse reinforcing rib 3, longitudinal reinforcing rib 2, liquid cooling bottom plate 1;

[0025] The longitudinal reinforcing ribs 2 are arranged in parallel and spaced apart in a grid-like manner, and the liquid cooling pipe 4 is bent and coiled in the space between the two grids of the longitudinal reinforcing ribs. The outer diameter of the liquid cooling pipe 4 is smaller than the thickness of the longitudinal reinforcing ribs 2 in the vertical direction, and the liquid cooling pipe 4 is thermally conductively attached to the lower bottom surface of the liquid cooling bottom plate 1. Since the longitudinal reinforcing ribs 2 and the transverse reinforcing ribs 3 are arranged in a criss-cross manner, the longitudinal reinforcing ribs 2 are arranged in parallel and spaced apart in a grid-like manner, and the liquid cooling pipe 4 is arranged in the space between the two grids of the longitudinal reinforcing ribs, when the external force is transmitted from bottom to top, the liquid cooling pipe 4 will not be squeezed, thereby ensuring The safety of the liquid cooling pipe 4 is ensured. Even if the external force is large and causes the bottom support plate 5 and the transverse reinforcement ribs 3 to deform, since the transverse reinforcement ribs 3 and the longitudinal reinforcement ribs 2 are criss-crossed and in point contact, the deformation of the bottom support plate 5 and the transverse reinforcement ribs 3 has little effect on the longitudinal reinforcement ribs 2, and thus has less effect on the liquid cooling pipe 4 in the spaces between the bars. In addition, the outer diameter of the liquid cooling pipe 4 is smaller than the thickness of the longitudinal reinforcement ribs 2, so that even if the longitudinal reinforcement ribs 2 are slightly deformed, the liquid cooling pipe 4 will not be squeezed or damaged, thereby preventing the coolant from being exposed and ensuring the safety of the energy storage system.

[0026] Furthermore, the upper surface of the liquid-cooled base plate 1 is also thermally bonded to a battery base plate 6, on which the battery base plate 6 carries the battery and / or control device of the energy storage cabinet; the battery base plate 6 is used to carry the equipment of the energy storage cabinet, and the liquid-cooled base plate 1 is used to conduct the heat generated by the battery base plate 6 and the energy storage cabinet equipment on the battery base plate 6 through the liquid cooling pipe 4.

[0027] Furthermore, the upper surface of the liquid cooling base plate 1 is also covered with a groove-shaped upper cover 7 with an opening facing downward, and the upper cover 7 seals the battery base plate 6 and the equipment buckle cover on the battery base plate 6 to the upper surface of the liquid cooling base plate 1; the upper cover 7 is used to maintain the temperature of the energy storage cabinet equipment on the battery base plate 6, so that the energy storage cabinet equipment can maintain a low temperature state as much as possible after the liquid cooling pipe 4 is cooled by heat conduction, and avoid being heated again by the sub-high temperature air flowing from the outside, thereby increasing the cooling effect of the liquid cooling pipe 4 as much as possible.

[0028] Furthermore, the longitudinal reinforcing ribs 2, the transverse reinforcing ribs 3, and the bottom support plate 5 are connected by welding, the liquid-cooling bottom plate 1 and the liquid-cooling pipe 4 are connected by welding, and the liquid-cooling bottom plate 1 and the bottom support plate 5 are detachably connected; the longitudinal reinforcing ribs 2, the transverse reinforcing ribs 3, and the bottom support plate 5 are connected by welding to form an anti-deformation protection structure, the liquid-cooling bottom plate 1 and the liquid-cooling pipe 4 are connected to form a liquid-cooling cooling structure, and the two structures are connected in a detachable manner, which is convenient for their respective inspection and maintenance, and the protection function and the cooling function are realized without interfering with each other, thereby ensuring the safety of the liquid-cooling pipe 4; the welding position of the reinforcing ribs is determined by mechanical analysis and the rationality of the flow channel design, which ensures that the entire PACK can effectively withstand its own weight and certain bumps and collisions without being damaged.

[0029] Furthermore, the detachable connection methods between the liquid cooling base plate 1 and the bottom support plate 5 include: threaded connection, bolt connection, and snap connection; a variety of detachable connection methods can be selected and used according to different on-site needs, among which threaded connection and bolt connection are more firm and reliable, and snap connection is faster and more convenient.

[0030] Furthermore, the liquid cooling pipe 4 is provided with a coolant inlet and outlet, and a docking joint and a docking valve are provided on the coolant inlet and outlet; each liquid cooling pipe 4 is provided with a docking joint and a docking valve, which can facilitate the operator to adjust different liquid cooling pipes 4, so that different equipment and different environments can be set with different cooling ranges, and local equipment in the same energy storage cabinet can also be cooled.

[0031] Furthermore, a flexible sealing insulation ring is provided at the edge of the interlayer between the liquid cooling base plate 1 and the bottom support plate 5; the flexible sealing insulation ring can ensure that most of the cooling effect of the liquid cooling pipe 4 acts on the target equipment in the energy storage cabinet, reducing the loss of cooling capacity.

[0032] Furthermore, the bottom support plate 5 is provided with openings at the front and rear for lifting with hooks, and fixed angle pieces are provided at both sides of the bottom support plate 5 for cooperating with the battery rack.

[0033] Example

[0034] In this embodiment, the brazed cold plate fixing protection structure of the liquid-cooled energy storage cabinet includes: an upper cover 7, a battery cell bottom plate 6, a liquid-cooled bottom plate 1, longitudinal reinforcing ribs 2, transverse reinforcing ribs 3, and a bottom support plate 5. The bottom of the liquid-cooled bottom plate 1 is evenly distributed with support reinforcing ribs in the transverse and longitudinal directions; the longitudinal support reinforcing ribs 2 are located in the concave area in the middle of the liquid-cooled bottom plate 1, and the groove is the sealed contact area between the liquid-cooled bottom plate 1 and the bottom support plate 5, which has the force-bearing condition; and the transverse reinforcing ribs 3 are located in the raised cavity flow channel, so that the weight of the entire product is evenly distributed to each force-bearing surface. The support reinforcing ribs and the bottom support plate 5 are all welded in an integrated process, and the battery cell bottom plate 6 and the liquid-cooled bottom plate 1 are sealed and brazed to form a brazed liquid-cooled plate; the liquid-cooled bottom plate 1 and the bottom support plate 5 are connected and fixed by screws, which is convenient for replacement and maintenance.

[0035] The brazed cold plate fixing protection structure of the liquid-cooled energy storage cabinet can be stacked vertically in three layers, and the installed corner pieces can be used to fix it in the wooden box; during transportation, it can effectively prevent vibration or shaking that may cause the PACK to be unstable or cause accidents in the box; a layer of foam can be placed under the bottom bracket of the wooden box to reduce scratches and bumps.

[0036] The battery fixing method of the liquid cooling system energy storage cabinet adopts the bottom bracket 5 reinforced screw crimping method. The battery bracket has a limit buckle to accurately ensure the installation interval of each single PACK. The height difference between the two layers of PACK can be controlled within 5mm-7.5mm. Forklift installation and insertion will not cause damage to the bottom of the battery, greatly reducing the damage caused by misoperation during the system installation process.

[0037] This embodiment can play a protective role: the supporting reinforcement ribs and the bottom bracket structure can effectively protect the brazed cold plate from being damaged by external forces; it can play a role in fixing and securing: there are openings at the front and rear of the bottom bracket, with reserved hook positions, which can be used directly during installation and lifting; the fixed angle pieces on both sides can cooperate with the battery rack, which plays a more critical role in PACK installation and improves safety; it can play a role in easy maintenance and replacement: the bottom bracket is integrally welded and fixed to the brazed cold plate with screws, so it can be directly disassembled without damaging other structures, making it easier to maintain and replace.

[0038] In summary, the utility model has crisscrossed longitudinal and transverse reinforcement ribs, and the longitudinal and transverse reinforcement ribs are layered and fixed at the intersection points, and then the liquid cooling pipe is arranged in the bar-shaped interval of the longitudinal reinforcement ribs, so that the liquid cooling pipe is well protected. The supporting reinforcement ribs and the bottom support plate structure can protect the brazed cold plate from being damaged by external forces from bottom to top, so it has broad application prospects.

[0039] It should be emphasized that the above are only preferred embodiments of the present invention and do not constitute any form of limitation to the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A brazed cold plate fixing protection structure for a liquid-cooled energy storage cabinet, characterized in that: include: A liquid cooling bottom plate (1), longitudinal reinforcing ribs (2), transverse reinforcing ribs (3), liquid cooling pipes (4), and a bottom support plate (5), wherein the lower bottom surface of the liquid cooling bottom plate (1) and the upper surface of the bottom support plate (5) sandwich the longitudinal reinforcing ribs (2), transverse reinforcing ribs (3), and liquid cooling pipes (4) between the liquid cooling bottom plate (1) and the bottom support plate (5) in layers; The longitudinal reinforcing ribs (2) and the transverse reinforcing ribs (3) are arranged in a crisscross pattern, the upper edge of the longitudinal reinforcing ribs (2) is in contact with the lower bottom surface of the liquid cooling bottom plate (1), the lower edge of the transverse reinforcing ribs (3) is in contact with the upper surface of the bottom support plate (5), and the lower edge of the longitudinal reinforcing ribs (2) is fixedly connected to the upper edge of the transverse reinforcing ribs (3) from top to bottom; The longitudinal reinforcing ribs (2) are arranged in parallel and spaced apart in a lattice shape, the liquid cooling pipe (4) is bent and coiled in the spaces between the lattice spaces of the longitudinal reinforcing ribs (2), the outer diameter of the liquid cooling pipe (4) is smaller than the thickness of the longitudinal reinforcing ribs (2) in the vertical direction, and the liquid cooling pipe (4) is thermally conductively attached to the lower bottom surface of the liquid cooling base plate (1).

2. The brazed cold plate fixing protection structure of a liquid-cooled energy storage cabinet according to claim 1 is characterized in that: The upper surface of the liquid cooling base plate (1) is also thermally conductively bonded to a battery base plate (6), and the battery and / or control device of the energy storage cabinet are carried on the battery base plate (6).

3. The brazed cold plate fixing protection structure of a liquid-cooled energy storage cabinet according to claim 2 is characterized in that: The upper surface of the liquid cooling bottom plate (1) is also covered with a groove-shaped upper cover (7) with an opening facing downward, and the upper cover (7) seals the battery cell bottom plate (6) and the equipment buckle cover on the battery cell bottom plate (6) on the upper surface of the liquid cooling bottom plate (1).

4. The brazed cold plate fixing protection structure of a liquid-cooled energy storage cabinet according to claim 1, characterized in that: The longitudinal reinforcing ribs (2), the transverse reinforcing ribs (3) and the bottom support plate (5) are connected by welding, the liquid cooling bottom plate (1) and the liquid cooling pipe (4) are connected by welding, and the liquid cooling bottom plate (1) and the bottom support plate (5) are connected in a detachable manner.

5. The brazed cold plate fixing protection structure of a liquid-cooled energy storage cabinet according to claim 4, characterized in that: The detachable connection method between the liquid cooling base plate (1) and the bottom support plate (5) includes: threaded connection, bolt connection, and snap connection.

6. The brazed cold plate fixing protection structure of a liquid-cooled energy storage cabinet according to claim 1, characterized in that: The liquid cooling pipeline (4) is provided with a cooling liquid inlet and outlet, and a butt joint and a butt valve are provided on the cooling liquid inlet and outlet.

7. The brazed cold plate fixing protection structure of a liquid-cooled energy storage cabinet according to claim 1, characterized in that: A flexible sealing heat-insulating ring is provided at the edge of the interlayer between the liquid-cooling bottom plate (1) and the bottom supporting plate (5).

8. The brazed cold plate fixing protection structure of a liquid-cooled energy storage cabinet according to claim 1, characterized in that: The bottom support plate (5) is provided with openings at the front and rear for use in lifting with a hook, and fixed angle pieces are provided at both sides of the bottom support plate (5) for use in cooperation with the battery rack.

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