A stepped groove sealing structure of an energy storage potting box

Abstract

The utility model discloses a kind of stepped groove sealing structure of energy storage potting box, including mutually cover and cooperate upper shell and lower shell, the splicing of two is equipped with double-layer stepped sealing structure, double-layer stepped sealing structure includes upper stepped splicing part and lower stepped splicing part, when assembling, first upper stepped and first lower stepped snap-in cooperation are cooperated, and first sealing ring is clamped;Second upper stepped and second lower stepped snap-in cooperation are cooperated, and second sealing ring is clamped;The utility model is through the collaborative design of double-layer stepped sealing and potting optimization, while guaranteeing the reliability of sealing, significantly reduce material cost and equipment weight, especially applicable to the mobile energy storage scene of high requirement to light weight and environmental tolerance.

Description

Technical Field

[0001] This utility model relates to the field of energy storage potting box technology, and in particular to a stepped groove sealing structure for an energy storage potting box. Background Technology

[0002] Energy storage potting boxes are packaging containers designed specifically for various energy storage devices (such as batteries, supercapacitors, inductors, etc.). Their main purpose is to provide physical protection, electrical insulation, environmental isolation (moisture-proof, dust-proof, corrosion-proof, etc.) and safety protection for the internal energy storage devices, ensuring that the energy storage devices are stable, safe and reliable during storage, transportation and use. Traditional packaging methods often use simple plastic shells or metal shells for packaging.

[0003] Traditional energy storage potting boxes used for battery pack packaging have battery assembly chambers and control circuit assembly chambers inside. To ensure their waterproofness, heat dissipation performance and insulation, the battery assembly chambers and control circuit assembly chambers need to be filled and potted separately. The amount of thermally conductive potting compound used is large, resulting in a large overall weight of the equipment and a high cost. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a stepped groove sealing structure for an energy storage potting box, the internal structure of the energy storage potting box, and the splicing structure of the upper and lower shells, so as to improve the airtightness of the energy storage potting box and reduce the amount of thermally conductive potting compound used.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a stepped groove sealing structure for an energy storage filling box, comprising an upper shell and a lower shell that fit together and overlap each other. A double-layer stepped sealing structure is provided at the joint between the two shells. The double-layer stepped sealing structure includes an upper stepped joint and a lower stepped joint. The upper stepped joint is formed on the joint surface of the upper shell and protrudes from the joint surface. The upper stepped joint includes a first upper step and a second upper step continuously arranged from the outside to the inside. The upper stepped joint is opened on the joint surface of the lower shell and recessed within the joint surface. The upper stepped joint includes a first lower step and a second lower step continuously arranged from the outside to the inside. During assembly, the first upper step and the first lower step are engaged and fitted with a first sealing ring; the second upper step and the second lower step are engaged and fitted with a second sealing ring.

[0006] In a further technical solution, grooves are respectively provided on the vertical step surfaces of the first and second lower steps, and the first and second sealing rings are respectively engaged in the corresponding grooves.

[0007] In a further technical solution, the four corners of the upper shell are respectively formed with threaded joints, and the bottom of the threaded joints is provided with internal threaded holes; the four corners of the lower shell are respectively formed with screw through parts, and the screw through parts are provided with through holes. Each through hole is provided with a screw unit from bottom to top. The screw unit is threaded to the internal threaded hole of the corresponding threaded joint to achieve a fast assembly between the upper shell and the lower shell.

[0008] In a further technical solution, a lead wire hole is provided on the side of the upper or lower shell, and a waterproof kit is installed in the lead wire hole. The outer wall of the waterproof kit is formed with a first convex ring and a second convex ring at intervals. An assembly groove is formed between the first convex ring and the second convex ring. The waterproof kit is engaged with the lead wire hole through the assembly groove. A through-hole is provided in the center of the waterproof kit, and the inner diameter of the through-hole gradually decreases from the inside to the outside.

[0009] In a further technical solution, a functional partition is formed on the side of the inner cavity of the lower shell near the lead hole. The functional partition extends along the width direction of the lower shell and is formed and connected to the side of the lower shell. With the functional partition as the boundary, the inner cavity of the lower shell is separated to form a control circuit assembly cavity and a battery cavity. The control circuit assembly cavity and the battery cavity are respectively filled with thermally conductive potting compound. The surface of the thermally conductive potting compound is not higher than the functional partition.

[0010] In a further technical solution, the bottom surface of the control circuit assembly cavity is formed with multiple connecting tubes for fixing the PCB board.

[0011] In a further technical solution, the battery cavity is provided with multiple battery separators at intervals along its length. Each battery separator is parallel to a functional separator, and a unit assembly cavity is formed between two adjacent battery separators for stabilizing the assembly of the battery before filling with thermally conductive potting compound.

[0012] In a further technical solution, the first side of each battery separator is respectively formed and connected to the same side of the lower shell, and the second side of each battery separator is separated from the lower shell.

[0013] In a further technical solution, the surfaces of the upper and lower shells are respectively formed with concave and convex structures to increase the heat dissipation area and improve the structural strength of the shell.

[0014] The advantages of this invention compared to the prior art after adopting the above structure are:

[0015] 1. This utility model, through the synergistic design of double-layer stepped sealing and potting optimization, significantly reduces material costs and equipment weight while ensuring sealing reliability, and is especially suitable for mobile energy storage scenarios with high requirements for lightweighting and environmental tolerance.

[0016] 2. The double-layer stepped sealing structure at the joint between the upper and lower shells forms two independent lines of defense, significantly improving waterproof and dustproof performance. Especially when the first seal fails, the second seal still maintains airtightness, making it suitable for harsh environments such as outdoors and in humid conditions.

[0017] 3. The functional partition divides the inner cavity into a control circuit cavity and a battery cavity. The unit assembly cavity formed by the battery partition makes the battery arrangement more regular. The liquid level limit design of the potting compound avoids waste of the compound. Compared with the traditional solution, the amount of compound used is reduced by about 50%, which reduces weight and cost.

[0018] 4. The lead hole adopts a tapered wire channel waterproof kit, which is compatible with different wire diameters and achieves axial sealing through double convex ring snap-fit, further improving the waterproof performance of the energy storage potting box. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is an exploded structural diagram of the present invention.

[0022] Figure 3 This is a structural diagram of the joint between the upper and lower shells in this utility model.

[0023] Figure 4 This is a structural schematic diagram of the waterproof kit in this utility model. Detailed Implementation

[0024] The following are merely preferred embodiments of the present invention and do not limit the scope of protection of the present invention.

[0025] like Figures 1 to 4 As shown, a stepped groove sealing structure for an energy storage filling box is characterized by: an upper shell 1 and a lower shell 2 that fit together and overlap each other, with a double-layer stepped sealing structure at their joint. The double-layer stepped sealing structure includes an upper stepped joint and a lower stepped joint. The upper stepped joint is formed on the joint surface of the upper shell 1 and protrudes from the joint surface of the upper shell 1. The upper stepped joint includes a first upper step 11 and a second upper step 12 continuously arranged from the outside to the inside. The upper stepped joint is opened on the joint surface of the lower shell 2 and recessed in the joint surface of the lower shell 2. The upper stepped joint includes a first lower step 21 and a second lower step 22 continuously arranged from the outside to the inside. During assembly, the first upper step 11 and the first lower step 21 are engaged and fitted with a first sealing ring 31; the second upper step 12 and the second lower step 22 are engaged and fitted with a second sealing ring 32.

[0026] This invention utilizes a synergistic design of double-layer stepped sealing and potting optimization to significantly reduce material costs and equipment weight while ensuring sealing reliability. It is particularly suitable for mobile energy storage scenarios with high requirements for lightweight design and environmental tolerance. The double-layer stepped sealing structure at the joint surface of the upper shell 1 and lower shell 2 forms two independent sealing lines, significantly improving waterproof and dustproof performance. Especially when the first seal fails, the second seal can still maintain airtightness, making it suitable for harsh environments such as outdoor and humid conditions.

[0027] Specifically, the vertical step surfaces of the first lower step 21 and the second lower step 22 are respectively provided with slots, and the first sealing ring 31 and the second sealing ring 32 are respectively engaged in the corresponding slots.

[0028] Specifically, the four corners of the upper shell 1 are respectively formed with screw joints 101, and the bottom of the screw joints 101 is provided with internal thread holes; the four corners of the lower shell 2 are respectively formed with screw rod through parts 102, and the screw rod through parts 102 are provided with through holes. Each through hole is provided with a screw unit 103 from bottom to top. The screw unit 103 is threaded to the internal thread hole of the corresponding screw joint 101 to realize the fastening assembly between the upper shell 1 and the lower shell 2.

[0029] Specifically, a lead wire hole is provided on the side of the upper shell 1 or the lower shell 2. A waterproof kit 4 is installed in the lead wire hole. The outer wall of the waterproof kit 4 is formed with a first protruding ring 41 and a second protruding ring 42 at intervals. An assembly groove 43 is formed between the first protruding ring 41 and the second protruding ring 42. The waterproof kit 4 is engaged with the lead wire hole through the assembly groove 43. A through-hole 40 is provided in the center of the waterproof kit 4. The inner diameter of the through-hole 40 gradually decreases from the inside to the outside.

[0030] The lead hole adopts a tapered wire channel waterproof kit 4, which is compatible with different wire diameters and achieves axial sealing through double convex ring snap-fit, further improving the waterproof performance of the energy storage potting box.

[0031] Specifically, a functional partition 20 is formed on the side of the inner cavity of the lower shell 2 near the lead hole. The functional partition 20 extends along the width direction of the lower shell 2 and is formed and connected to the side of the lower shell 2. With the functional partition 20 as the boundary, the inner cavity of the lower shell 2 is separated to form a control circuit assembly cavity 201 and a battery cavity 202. The control circuit assembly cavity 201 and the battery cavity 202 are respectively filled with thermally conductive potting compound. The surface of the thermally conductive potting compound is not higher than the functional partition 20.

[0032] The functional partition 20 divides the inner cavity into a control circuit cavity 201 and a battery cavity 202. Together with the battery partition 203, it forms a unit assembly cavity 204, which makes the battery arrangement more regular. The liquid level limit design of the potting compound avoids waste of the compound. Compared with the traditional solution, the amount of compound used is reduced by about 50%, which reduces weight and cost.

[0033] Specifically, the bottom surface of the control circuit assembly cavity 201 is formed with multiple connecting tubes 2011 for fixing the PCB board.

[0034] Specifically, the battery cavity 202 is provided with a plurality of battery separators 203 at intervals along its length. Each battery separator 203 is parallel to the functional separator 20. A unit assembly cavity 204 is formed between two adjacent battery separators 203 for stabilizing the assembly of the battery before filling with thermally conductive potting compound.

[0035] Specifically, the first side of each battery separator 203 is formed and connected to the same side of the lower shell 2, and the second side of each battery separator 203 is spaced apart from the lower shell 2.

[0036] Specifically, the surfaces of the upper shell 1 and the lower shell 2 are respectively formed with concave and convex structures 5 to increase the heat dissipation area and improve the structural strength of the shell.

[0037] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A stepped groove seal configuration for an energy storage potting box, characterized by: The system includes an upper shell (1) and a lower shell (2) that fit together. A double-layer stepped sealing structure is provided at the joint between the two shells. The double-layer stepped sealing structure includes an upper stepped joint and a lower stepped joint. The upper stepped joint is formed on the joint surface of the upper shell (1) and protrudes from the joint surface of the upper shell (1). The upper stepped joint includes a first upper step (11) and a second upper step (12) continuously arranged from the outside to the inside. The upper stepped joint is opened on the joint surface of the lower shell (2) and recessed into the joint surface of the lower shell (2). The upper stepped joint includes a first lower step (21) and a second lower step (22) continuously arranged from the outside to the inside. During assembly, the first upper step (11) and the first lower step (21) are engaged and fitted with a first sealing ring (31); the second upper step (12) and the second lower step (22) are engaged and fitted with a second sealing ring (32).

2. The stepped groove sealing structure of an energy storage filling box according to claim 1, characterized in that: The vertical step surfaces of the first lower step (21) and the second lower step (22) are respectively provided with slots, and the first sealing ring (31) and the second sealing ring (32) are respectively engaged in the corresponding slots.

3. The stepped groove sealing structure of an energy storage filling box according to claim 2, characterized in that: The upper shell (1) has four corners with threaded connectors (101) formed respectively, and the bottom of the threaded connectors (101) has an internal threaded hole; the lower shell (2) has four corners with screw through parts (102) formed respectively, and the screw through parts (102) have through holes. Each through hole is provided with a screw unit (103) from bottom to top. The screw unit (103) is threaded to the internal threaded hole of the corresponding threaded connector (101) to realize the fastening assembly between the upper shell (1) and the lower shell (2).

4. The stepped groove sealing structure of an energy storage filling box according to claim 3, characterized in that: The upper shell (1) or the lower shell (2) has a lead wire hole on its side. A waterproof kit (4) is installed in the lead wire hole. The outer wall of the waterproof kit (4) is formed with a first protruding ring (41) and a second protruding ring (42) at intervals. An assembly groove (43) is formed between the first protruding ring (41) and the second protruding ring (42). The waterproof kit (4) is engaged with the lead wire hole through the assembly groove (43). The waterproof kit (4) has a through-hole (40) at the center, with the inner diameter of the through-hole (40) gradually decreasing from the inside to the outside.

5. The stepped groove sealing structure of an energy storage filling box according to claim 4, characterized in that: A functional partition (20) is formed on the side of the inner cavity of the lower shell (2) near the lead hole. The functional partition (20) extends along the width direction of the lower shell (2) and is formed and connected to the side of the lower shell (2). With the functional partition (20) as the boundary, the inner cavity of the lower shell (2) is separated to form a control circuit assembly cavity (201) and a battery cavity (202). The control circuit assembly cavity (201) and the battery cavity (202) are respectively filled with thermally conductive potting compound. The surface of the thermally conductive potting compound is not higher than the functional partition (20).

6. The stepped groove sealing structure of an energy storage filling box according to claim 5, characterized in that: The bottom surface of the control circuit assembly cavity (201) is formed with multiple connecting tubes (2011) for fixing the PCB board.

7. The stepped groove sealing structure of an energy storage filling box according to claim 6, characterized in that: The battery cavity (202) is provided with a plurality of battery separators (203) spaced apart along its length. Each battery separator (203) is parallel to the functional separator (20). A unit assembly cavity (204) is formed between two adjacent battery separators (203) for stabilizing the assembly of the battery before filling with thermally conductive potting compound.

8. The stepped groove sealing structure of an energy storage filling box according to claim 7, characterized in that: The first side of each battery separator (203) is respectively formed and connected to the same side of the lower shell (2), and the second side of each battery separator (203) is separated from the lower shell (2).

9. The stepped groove sealing structure of an energy storage filling box according to claim 1, characterized in that: The surfaces of the upper shell (1) and the lower shell (2) are respectively formed with concave and convex structures (5) to increase the heat dissipation area and improve the structural strength of the shell.

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