Liquid cooling energy storage cabinet PACK module assembly

Abstract

The utility model provides a liquid cooling energy storage cabinet PACK module assembly comprising a bottom plate assembly, the upper surface of the bottom plate assembly is provided with a housing with an open lower end, and a box body structure is formed; a sealed mounting cavity is formed in the box body structure, a vertical partition plate is arranged in the mounting cavity, the vertical partition plate is arranged at the front end of the mounting cavity, the length direction of the vertical partition plate is parallel to the width direction of the shell, the mounting cavity is divided into a front cavity and a rear cavity, and a battery module is arranged in the rear cavity; the front end of the shell is provided with a power interface connected with the battery module; a bottom plate assembly is arranged in the shell, a cooling flow channel is arranged in the bottom plate assembly, cooling liquid connectors are arranged at the front end of the bottom plate assembly, the number of the cooling liquid connectors is two, the two cooling liquid connectors are arranged on the two sides of the front end of the shell respectively, and the two cooling liquid connectors are connected with the two ends of the cooling flow channel respectively and serve as a liquid inlet and a liquid outlet respectively. The liquid cooling energy storage cabinet PACK module assembly is compact in structure, high in strength, good in heat dissipation performance, high in use safety and wide in application range.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of energy storage cabinets, in particular to a kind of liquid cooling energy storage cabinet PACK module assembly. BACKGROUND

[0002] In solar and wind power generation, energy storage cabinet plays an important role. When the weather changes, the power generated by solar or wind power fluctuates, and the energy storage cabinet can store excess solar power and release it when needed, thus smoothing the power fluctuation and maintaining the stability and continuity of the power. At the same time, the energy storage cabinet can be used as a backup power supply. When the weather affects the generation of sufficient power, it can provide stable power supply, which helps to ensure the continuous operation of the system and avoid downtime or failure due to insufficient power. By storing power and releasing it when needed, the energy storage cabinet can optimize energy utilization, such as during peak power demand periods, the energy storage cabinet can release stored power, reducing dependence on the power grid and power costs. At the same time, during the low power demand period, the energy storage cabinet can store power for the power demand of the peak period.

[0003] PACK module, also known as battery module, is a manufacturing process of lithium ion battery. It connects multiple lithium ion single cell groups in parallel and series, and considers system mechanical strength, thermal management, BMS (battery management system) matching, etc. Form a complete battery pack to realize energy storage and output as the core component of energy storage cabinet, which plays an important role in the system.

[0004] A large amount of heat is generated during charging and discharging. If the heat is not dissipated in time, it will cause the internal temperature of the equipment to rise, which will affect the performance and life of the equipment. In order to improve the heat dissipation efficiency, the existing technology sets a liquid cooling component inside the module. Due to the structure, the existing liquid cooling structure will affect the overall layout of the module. The cooling pipe is set inside, and the interface is set on the side wall of the box, which is easy to leak, inconvenient to disassemble and assemble, increases the maintenance and use cost, and the cooling efficiency is not high. Utility model content

[0005] Technical problem to be solved

[0006] The technical problem to be solved by the utility model is to provide a liquid cooling energy storage cabinet PACK module assembly with compact structure, high strength, large heat exchange area, high heat exchange efficiency and safe use.

[0007] Technical solution to solve the problem

[0008] The utility model provides a kind of liquid cooling energy storage cabinet PACK module assembly, including bottom plate assembly, the upper surface of bottom plate assembly is equipped with the shell 6 of lower end open and forms box structure, the both sides of box structure are symmetrically provided with hoisting part 8;Sealed mounting cavity is formed in the box structure, vertical partition 5 is equipped in the mounting cavity, the vertical partition 5 is arranged in the front end of the mounting cavity, and its length direction is parallel to the width direction of the shell 6 and the mounting cavity is separated into front cavity and rear cavity, battery module is equipped in the rear cavity, the front end of the shell 6 is equipped with the power supply interface connected with the battery module;Cooling flow channel 10 is equipped in the bottom plate assembly, the front end of bottom plate assembly is equipped with cooling liquid interface 7, the cooling liquid interface 7 is two and is respectively arranged in the front end of the shell 6 two sides, two cooling liquid interface 7 is respectively connected with the both ends of cooling flow channel 10 and is respectively used as liquid inlet and liquid outlet.

[0009] Further, the cooling flow channel is a wave shape of reciprocating bending.

[0010] Further, the length of the front cavity is 40mm-80mm.

[0011] Further, the front end of the bottom plate assembly is equipped with positioning block 9 on both sides, the front end surface of positioning block 9 is parallel to the front end surface of the box structure and is used as positioning surface, and mounting hole for mounting pressing plate is formed on the positioning surface.

[0012] Further, the bottom plate assembly includes bottom plate body 1, the cooling area of both ends open is formed in the bottom plate body 1, and the end plate is sealingly connected to both open ends of the bottom plate body 1 to form a sealed chamber in the cooling area;The strip-shaped baffle 101 is provided in the cooling area, the strip-shaped baffle 101 is multiple and is equidistantly arranged along the width direction of the cooling area, and the both ends of the strip-shaped baffle 101 are alternately connected with the end plates at both ends to form a reciprocating bending cooling flow channel.

[0013] Further, the width of the cooling flow channel is 1 / 7-1 / 5 of the width of the bottom plate assembly.

[0014] Further, the cooling flow channel is equipped with sub-strip-shaped baffle 102, the sub-strip-shaped baffle 102 is multiple and is equidistantly arranged along the width direction of the cooling flow channel to form sub-flow channel 100, and the both ends of the sub-strip-shaped baffle 102 have gaps between the both end end plates.

[0015] Further, the upper bottom surface and the lower bottom surface of the sub-flow channel 100 are provided with strip-shaped protrusions 1001 for heat conduction, and the strip-shaped protrusions 1001 are multiple and are equidistantly arranged along the width direction of the sub-flow channel 100.

[0016] Further, the upper bottom surface and the lower bottom surface of the sub-flow channel 100 are staggered with the strip-shaped protrusions.

[0017] Further, the lower bottom surface of the bottom plate body 1 is attached with a heat insulation sheet 15, the front and rear ends of the upper surface of the bottom plate body 1 are provided with support rods, the length direction of the support rods is parallel to the width direction of the bottom plate body 1, the edge of the upper surface of the bottom plate body 1 is provided with a flange 4, and the edge of the shell 6 is sealingly fixed on the flange 4.

[0018] Further, the bottom plate body 1 is spliced by at least two sub-plates.

[0019] Further, the length ratio of the rear cavity to the front cavity is 15:1-22:1.

[0020] Further, the projection proportion of the cooling flow channel 10 on the bottom surface of the mounting cavity is greater than or equal to 85%.

[0021] Beneficial effects

[0022] The liquid-cooled energy storage cabinet PACK module assembly of the utility model takes the bottom plate as a cooling medium, has a large cooling area, significantly improves heat exchange efficiency, ensures that the module can still maintain stable temperature under high load operation, prolongs service life, does not occupy internal space, does not affect the overall layout of the PACK module, optimizes the heat dissipation path, reduces thermal resistance, improves the reliability and safety of the system, reduces maintenance cost, is suitable for various high-power energy storage equipment, has no cooling pipe and cooling interface inside, has good sealing performance, no leakage risk, high use safety, good reliability and long service life, adopts a sub-flow channel structure, has good fluidity, uniform distribution of cooling liquid, effectively avoids local overheating, improves overall heat dissipation effect, further enhances the stability and durability of the module, and ensures long-term efficient operation, the assembled bottom plate assembly reduces manufacturing process difficulty and cost, is convenient to assemble, has high structural strength and good use effect, the liquid-cooled energy storage cabinet PACK module assembly of the utility model has compact structure, high strength, good heat dissipation performance, high use safety and wide application range. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a structure schematic view of the liquid-cooled energy storage cabinet PACK module assembly of the utility model;

[0024] Figure 2 It is a sectional view of the liquid-cooled energy storage cabinet PACK module assembly of the utility model;

[0025] Figure 3 It is a structure schematic view of the bottom plate assembly of the liquid-cooled energy storage cabinet PACK module assembly of the utility model;

[0026] Figure 4It is the sectional view of bottom plate assembly of liquid cooling energy storage cabinet PACK module assembly of the utility model;

[0027] Figure 5 It is the setting schematic view of strip baffle of liquid cooling energy storage cabinet PACK module assembly of the utility model;

[0028] Figure 6 It is another angle horizontal sectional view of bottom plate assembly of liquid cooling energy storage cabinet PACK module assembly of the utility model;

[0029] Figure 7 It is longitudinal sectional view of liquid cooling energy storage cabinet PACK module assembly of the utility model;

[0030] Figure 8 It is Figure 7 Enlarged view of A part in middle;

[0031] Figure 9 It is the installation schematic view of end plate of liquid cooling energy storage cabinet PACK module assembly of the utility model;

[0032] Figure 10 It is Figure 9 Enlarged view of B part in middle;

[0033] Figure 11 It is the explosion structure schematic view of bottom plate assembly of liquid cooling energy storage cabinet PACK module assembly of the utility model;

[0034] Figure 12 It is the use state diagram of liquid cooling energy storage cabinet PACK module assembly of the utility model. DETAILED DESCRIPTION

[0035] The embodiments of the utility model will be described in detail below with reference to the drawings.

[0036] Refer to Figures 1-12The utility model provides a kind of liquid cooling energy storage cabinet PACK module assembly, including bottom plate assembly, the bottom plate assembly is the plate structure of rectangle as a whole, its thickness is 10mm-20mm, the upper surface of bottom plate assembly is equipped with shell 6, specifically, the shell 6 is the cuboid structure of lower end open (opening), its brim is sealed and fixed at the brim of bottom plate assembly, and then form a box structure, hoisting part 8 is symmetrically provided on both sides of box structure, specifically, two hoisting parts 8 are respectively provided on both sides of box structure, for integral hoisting and fixed module assembly, hoisting part 8 is the triangular structure as a whole, it is arranged on the upper surface of bottom plate assembly, its brim is flush with the brim of bottom plate assembly, avoid when assembling and cabinet knock against each other;Sealed mounting cavity is formed in box structure, vertical partition plate 5 is equipped in mounting cavity, the vertical partition plate 5 is arranged at the front end of mounting cavity, its length direction is parallel to the width direction of shell 6, and then mounting cavity is separated into front cavity and rear cavity, battery module is equipped in rear cavity, and simultaneously, power supply interface connected with battery module is equipped at the front end of shell 6, rear end of power supply interface is located in front cavity, for wiring operation, by the vertical partition plate, play blocking effect, avoid contact with battery module when operating, improve safety and stability, in the application, the length ratio of rear cavity and front cavity is 15:1-22:1, preferably, the length of the front cavity is 40mm-80mm, facilitate wiring operation etc.;Cooling flow channel 10 is equipped in bottom plate assembly, cooling liquid interface 7 is equipped at the front end of bottom plate assembly, cooling liquid interface 7 is two, respectively arranged at the front end of shell 6 two sides, two cooling liquid interfaces 7 are respectively connected with two ends of cooling flow channel 10, and respectively as liquid inlet and liquid outlet.

[0037] In the application, the cooling flow channel is reciprocating curved wave shape, and the projection ratio of cooling flow channel 10 on the bottom surface of mounting cavity is greater than or equal to 85%, assuming that the projection area of cooling flow channel 10 on the bottom surface of mounting cavity is A, and the bottom surface area of mounting cavity is B, then A / B≥85, the projection area of cooling flow channel in mounting cavity is large, cooling efficiency is high and effect, ensure that battery module temperature is uniform in running process, improve module overall thermal management performance, and prolong battery service life.

[0038] In the application, the bottom plate assembly includes a bottom plate body 1, which is a rectangular plate structure with a thickness of 8-18 mm. A cooling area is formed in the bottom plate body 1, and the front and rear ends of the cooling area are open. End plates are sealingly connected to the two open ends of the bottom plate body 1 to form a sealed chamber. Specifically, a strip-shaped groove is provided at the two ends of the bottom plate body 1, i.e., the open ends. The strip-shaped groove is located at the middle position of the bottom plate body 1, and its length direction is parallel to the width direction of the bottom plate body 1. The two ends of the strip-shaped groove penetrate to the two side edges of the bottom plate body 1, and a sealing strip is embedded in the strip-shaped groove. A front end plate 21 is provided at the front end of the bottom plate body. The front end plate is a strip-shaped structure with a rectangular cross-section, the same thickness as the bottom plate body, and the same length as the width of the bottom plate body. A first strip-shaped protrusion 211 is provided on the rear end side wall of the front end plate. The thickness of the first strip-shaped protrusion 211 is the same as that of the strip-shaped groove. When assembled, the first strip-shaped protrusion 211 is just inserted into the strip-shaped groove. At the same time, the front end plate 21 is precisely attached to the front end face of the bottom plate body 1 and is fixed by welding to ensure the sealing property and form an integral whole. Two through grooves 10a and 10b are formed on the front end face of the front end plate. The through grooves 10a and 10b are respectively connected to the two ends of a cooling flow channel 10. A rectangular mounting seat 71 is sealingly connected in the through grooves 10a and 10b. The mounting seat 71 is fixed on the front end of the front end plate by sealing, and its thickness is the same as that of the bottom plate body 1. A mounting opening is provided on the top of the mounting seat 71. A cylindrical connecting joint 72 for connecting a joint is provided on the mounting opening. The connecting joint 72 is vertically arranged. A channel is formed in the mounting seat 71. The channel connects the through grooves and the connecting joint 72 to form a cooling structure for connecting a liquid cooling system and inputting or outputting cooling medium to realize circulating liquid cooling. A rear end plate 22 is provided at the rear end of the bottom plate body 1. The structure of the rear end plate 22 is similar to that of the front end plate 21 and is fixed by welding to ensure the overall sealing property. The difference is that the rear end plate does not have a mounting seat and a connecting joint.

[0039] A strip-shaped baffle 101 is provided in the cooling area. The strip-shaped baffle 101 is strip-shaped with its length direction parallel to the length direction of the bottom plate body 1, i.e., arranged in front of and behind each other. The strip-shaped baffles 101 are multiple and are equally arranged along the width direction of the cooling area. The two ends of the strip-shaped baffles 101 are alternately connected to the end plates at the two ends and form a reciprocating curved cooling flow channel. In the application, the number of strip-shaped baffles is odd, and an even number of flow channels are formed so that the liquid inlet and outlet are both located at the front end. The front end of the strip-shaped baffle at the odd position is in contact with the front end plate 21, indicating that the place is not connected. The rear end is not in contact with the rear end plate 22, indicating that the place is connected. The rear end of the strip-shaped baffle at the even position is in contact with the rear end plate 22, indicating that the place is not connected. The front end is not in contact with the front end plate 21, indicating that the place is connected. Thus, a reciprocating curved cooling flow channel is formed.

[0040] In the application, the strip baffle 101 is three, forming four flow channels, and the width of the cooling flow channel is 1 / 7-1 / 5 of the width of the bottom plate assembly, which is wide, has a large contact area with the bottom plate body, and has high heat conduction efficiency; in order to further improve the cooling efficiency, a sub-strip baffle 102 is arranged in the cooling flow channel, which is strip-shaped, the length direction is parallel to the length direction of the strip baffle 101, and the sub-strip baffle 102 is multiple, which is equidistantly arranged along the width direction of the cooling flow channel, forming multiple sub-flow channels 100, in the embodiment, the width of the sub-flow channel is 3-4 times of its thickness, at the same time, the two ends of the sub-strip baffle 102 and the two end plates (front end plate and rear end plate) have gaps, therefore, the flow direction of the sub-flow channel in the same flow channel is the same, the flow area is large, the cooling efficiency is good, and the blocking phenomenon does not occur, the flowability and cooling effect are good.

[0041] In order to further improve the cooling effect, strip-shaped protrusions 1001 are arranged on the upper bottom surface and the lower bottom surface of the sub-flow channel 100, which are strip-shaped, the length direction is parallel to the length direction of the strip-shaped baffle, the end is arc-shaped, that is, the cross section is U-shaped, which is used to increase the contact area of the cooling medium and the flow channel and enhance the heat exchange effect, at the same time, the arc-shaped end of the strip-shaped protrusion 1001 helps to guide the fluid flow, reduces the turbulent flow, further improves the stability and efficiency of the cooling system, the strip-shaped protrusions 1001 are multiple, which are equidistantly arranged along the width direction of the sub-flow channel 100; in the application, the strip-shaped protrusions on the upper bottom surface and the lower bottom surface of the sub-flow channel 100 are staggered.

[0042] In the application, the bottom plate body is made of profiled material, which has good heat conduction performance and mechanical strength, ensures the stable work of the bottom plate body in high temperature environment, and can reduce the production cost.

[0043] In order to improve the structural strength, the heat insulation sheet 15 is attached to the lower bottom surface of the bottom plate body 1 to avoid heat exchange at the lower end of the bottom plate body 1 and reduce energy consumption. Meanwhile, the support rods are arranged at the front and rear ends of the upper surface of the bottom plate body 1, and the length direction of the support rods is parallel to the width direction of the bottom plate body 1. Specifically, the first support rod 31 is arranged at the front end of the upper surface of the bottom plate body 1, and the length direction of the first support rod 31 is parallel to the width direction of the bottom plate body 1. The cross section of the first support rod 31 is an inverted body-shaped structure. The first support rod 31 is fixed to the bottom plate body 1 by welding to enhance the stability of the overall structure. Meanwhile, the vertical partition plate 5 is fixed to the first support rod 31. The second support rod 32 is arranged at the rear end of the upper surface of the bottom plate body 1. The length direction of the second support rod 32 is parallel to the width direction of the bottom plate body 1. The cross section of the second support rod 32 is an inverted body-shaped structure. The second support rod 32 is fixed to the bottom plate body 1 by welding to enhance the stability of the overall structure. The second support rod 32 is arranged in the mounting cavity to improve the overall structural strength of the bottom plate body.

[0044] The flange ring 4 is arranged at the edge of the upper surface of the bottom plate body 1. The flange ring 4 is rectangular, and is arranged along the contour of the bottom plate body 1, that is, the edge of the flange ring 4 is parallel to the edge of the bottom plate body 1. The shell is sealingly mounted on the flange ring 4 to realize internal sealing.

[0045] In order to reduce the production cost, the bottom plate body 1 can be spliced by two left and right sub-plates.

[0046] In order to facilitate quick positioning and fixing in the cabinet body, the positioning blocks 9 are arranged at the edges of the front end of the bottom plate assembly. The positioning blocks 9 are cuboids, and the front end surface of the positioning blocks 9 is parallel to the front end surface of the cabinet structure and serves as a positioning surface. The mounting holes are arranged on the positioning surface to mount the pressing plate. One end of the pressing plate is fixed to the positioning block, and the other end is fixed to the cabinet body to realize accurate positioning of the module.

[0047] The utility model discloses liquid -cooled energy storage cabinet PACK module assembly, with bottom plate as cooling medium, and the cooling area is big, and the heat exchange efficiency is improved significantly, ensures that module still can keep stable temperature under high load operation, prolongs the service life, does not occupy internal space, does not influence the overall layout of PACK module, has optimized the heat dissipation path, has reduced the thermal resistance, has improved the reliability and safety of system, has reduced the maintenance cost, is applicable to various high -power energy storage equipment, has no cooling pipe and cooling interface in the inside, and the sealing is good, and there is no leakage risk, and the use safety is high, and the reliability is good, and the life is long, adopts the sub -flow channel structure setting, and the liquidity is good, and the coolant is evenly distributed, effectively avoids the local overheating phenomenon, improves the overall heat dissipation effect, further strengthens the stability and durability of module, ensures long -term efficient operation, and the assembly type bottom plate assembly sets up, reduces the manufacturing process difficulty and cost, and the assembly is convenient, and the structural strength is high, and the use effect is good, the utility model discloses liquid -cooled energy storage cabinet PACK module assembly, compact structure, high strength, good heat dissipation performance, high use safety, wide application range.

[0048] The above only is the preferred implementation of the utility model, should point out, for the ordinary skill in the art of the present technology, on the premise of not departing from the technical principle of the utility model, can make a number of improvements and refinements, these improvements and refinements also should be regarded as the protection scope of the utility model.

Claims

1. A liquid-cooled energy storage cabinet PACK module assembly, characterized in that: The bottom plate assembly includes an upper surface of the bottom plate assembly is provided with a shell with an open lower end and forms a box structure, both sides of the box structure are symmetrically provided with lifting parts; a sealed mounting cavity is formed in the box structure, a vertical partition plate is arranged in the front end of the mounting cavity, and the length direction of the vertical partition plate is parallel to the width direction of the shell and separates the mounting cavity into a front cavity and a rear cavity, a battery module is arranged in the rear cavity, and a power supply interface connected with the battery module is arranged at the front end of the shell; a cooling flow channel is arranged in the bottom plate assembly, cooling liquid interfaces are arranged at the front end of the bottom plate assembly, the two cooling liquid interfaces are arranged on both sides of the front end of the shell respectively, and the two cooling liquid interfaces are connected with both ends of the cooling flow channel respectively and serve as liquid inlets and outlets respectively.

2. The liquid-cooled energy storage tank (PACK) module assembly of claim 1, wherein: The projection area ratio of the cooling flow channel to the bottom surface of the mounting cavity is greater than or equal to 85%.

3. The liquid-cooled energy storage tank (PACK) module assembly of claim 1, wherein: The cooling flow channel is a wave shape with reciprocating bends.

4. The liquid-cooled energy storage tank (PACK) module assembly of claim 1, wherein: The length of the front cavity is 40mm-80mm.

5. The liquid-cooled energy storage tank (PACK) module assembly of claim 1, wherein: The bottom plate assembly includes a bottom plate body, a cooling area with open ends is formed in the bottom plate body, end plates are sealingly connected to the two open ends of the bottom plate body, and the cooling area forms a sealed chamber; strip-shaped baffles are arranged in the cooling area, the strip-shaped baffles are multiple and are equidistantly arranged along the width direction of the cooling area, and the two ends of the strip-shaped baffles are alternately connected to the end plates at the two ends and form a reciprocating bending cooling flow channel.

6. The liquid-cooled energy storage tank (PACK) module assembly of claim 5, wherein: The width of the cooling flow channel is 1 / 7-1 / 5 of the width of the bottom plate assembly.

7. The liquid-cooled energy storage tank (PACK) module assembly of claim 5, wherein: Sub-strip-shaped baffles are arranged in the cooling flow channel, the sub-strip-shaped baffles are multiple and are equidistantly arranged along the width direction of the cooling flow channel and form sub-flow channels, and gaps are formed between the two ends of the sub-strip-shaped baffles and the two end plates at the two ends.

8. The liquid-cooled energy storage tank (PACK) module assembly of claim 7, wherein: The upper bottom surface and the lower bottom surface of the sub-flow channel are provided with strip-shaped protrusions for heat conduction, the strip-shaped protrusions are multiple and are equidistantly arranged along the width direction of the sub-flow channel.

9. The liquid-cooled energy storage tank (PACK) module assembly of claim 8, wherein: The strip-shaped protrusions on the upper bottom surface and the lower bottom surface of the sub-flow channel are staggered.

10. The liquid-cooled energy storage tank (PACK) module assembly of claim 5, wherein: A heat insulation sheet is attached to the lower bottom surface of the bottom plate body, support rods are arranged at the front and rear ends of the upper surface of the bottom plate body, the length direction of the support rods is parallel to the width direction of the bottom plate body, a flange ring is arranged at the edge of the upper surface of the bottom plate body, and the edge of the shell is sealingly fixed on the flange ring.

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