An energy storage module

Abstract

The utility model discloses a kind of energy storage modules, including the shell of inner cavity and the inner shell of being set on the inner wall of shell;The inner cavity of shell is equipped with heat conduction support column, and the avoidance passage for heat conduction support column is passed through and is set on the inner shell;The inner cavity of inner shell is filled with phase change material;The two end surfaces of heat conduction support column are connected with the two side inner walls of shell respectively, and the peripheral wall of heat conduction support column is connected with the side wall of avoidance passage;Shell, inner shell and heat conduction support column are 3D printing integrated structure.The utility model passes through using integrated structure, while improving the bearing strength of energy storage module inner cavity, reduces assembly gap, improves sealing, reduces assembly difficulty.

Description

Technical Field

[0001] This utility model relates to the field of energy storage module technology, and specifically to an energy storage module. Background Technology

[0002] Satellites operate in a vacuum in space, and their lifespan is typically from several months to several years. Since satellites do not rotate and only one side is exposed to the sun while the other side remains inaccessible, they experience significant temperature differences. Furthermore, the intermittent operation of many precision electronic components prevents effective heat conduction and dissipation, leading to excessively high component temperatures. Therefore, energy storage modules are needed to maintain a constant temperature for these electronic components through heat storage and dissipation.

[0003] Energy storage modules are primarily used inside satellite modules or on the outer casings of products such as laser communication terminals and on-board processing terminals. The energy storage modules are installed using screws through through-holes. During installation, to ensure low thermal resistance between the contact surfaces, thermal grease should be applied to the mounting surface or a thermal pad should be installed.

[0004] A Chinese patent document with publication number CN213028919U describes a satellite thermal control energy storage module based on welding and adhesive sealing technology. This module has multiple assembly gaps, which are sealed using both laser welding and sealant. Existing satellite thermal control energy storage modules have numerous assembly gaps, poor sealing performance, and are difficult to manufacture and assemble. Utility Model Content

[0005] This utility model proposes an energy storage module to solve the problems of poor sealing and difficult assembly of energy storage modules.

[0006] This utility model discloses an energy storage module, including an outer shell with an internal cavity and an inner shell disposed on the inner wall of the outer shell; the inner cavity of the outer shell is provided with a heat-conducting support column, and the inner shell is provided with a clearance channel for the heat-conducting support column to pass through; the inner cavity of the inner shell is filled with a phase change material. The two end faces of the thermally conductive support column are respectively connected to the inner walls of the two sides of the outer shell, and the peripheral wall of the thermally conductive support column is connected to the side wall of the clearance channel. The outer shell, the inner shell, and the thermally conductive support column are a 3D-printed integrated structure. By adopting an integrated structure, the strength of the energy storage module's internal cavity is improved, while assembly gaps are reduced, sealing is enhanced, and assembly difficulty is lowered.

[0007] Furthermore, the outer shell has a liquid filling hole on its side wall, and the inner shell has a corresponding liquid filling tube. The liquid filling tube extends into the liquid filling hole and is disposed on the side wall of the liquid outlet end of the liquid filling hole. The filling hole is adapted to be welded to the insertion tube. After the phase change material is injected into the inner cavity of the inner shell through the insertion tube and the filling tube in sequence, the insertion tube is clamped off, and then the clamped part of the insertion tube connected to the filling hole is welded and sealed to seal the inner cavity of the inner shell. This method allows the phase change material to be injected into the inner cavity of the inner shell.

[0008] Furthermore, the filling hole is a stepped hole, including a large-diameter section near the outer wall of the outer shell and a small-diameter section near the inner wall of the outer shell; The larger diameter section is connected to the smaller diameter section; The liquid inlet end of the filling tube extends into the small diameter section, and the outer wall of the filling tube is connected to the small diameter section. The large-diameter section is adapted to connect to the insertion tube, so that the phase change material is injected into the inner cavity of the inner shell sequentially via the insertion tube and the filling tube. This approach reduces the difficulty of injecting the phase change material into the inner cavity of the inner shell.

[0009] Furthermore, the filling hole and the filling pipe are coaxially arranged, and the axial direction of the thermally conductive support column is perpendicular to the axial direction of the filling hole. This design reduces the difficulty of injecting the phase change material into the inner cavity of the shell.

[0010] Furthermore, both the outer shell and the inner shell have a bilaterally symmetrical structure; the filling hole is located at the center of the front wall of the outer shell; The thermally conductive support pillars have a circular cross-section; there are at least five thermally conductive support pillars, symmetrically distributed within the inner cavity of the outer shell. Using this design, the distribution of the thermally conductive support pillars will not affect the flow of the phase change material within the inner cavity of the shell.

[0011] Furthermore, the inner shell includes a main body and a front extension disposed at the front end of the main body; there are two front extensions, which are symmetrically disposed at the front end of the main body; the filling tube is disposed at the front end of the main body and is located between the two front extensions. The clearance channel is located on the main body. This design improves the load-bearing capacity of the energy storage module's internal cavity.

[0012] Furthermore, the outer shell and the thermally conductive support column are made of the same material; the outer shell is an aluminum alloy outer shell, the inner shell is a copper inner shell, and the thermally conductive support column is an aluminum alloy thermally conductive support column.

[0013] Furthermore, the outer shell has a wall thickness of 1.5mm to 2.5mm, and the inner shell has a wall thickness of 0.1mm to 0.3mm.

[0014] Furthermore, the outer shell is rectangular; clearance areas are provided at the four corners of the outer shell, and connection holes are formed in the clearance areas, with the axis of the connection holes parallel to the axis of the thermally conductive support column. By adopting the above solution, the load-bearing capacity of the energy storage module's inner cavity is improved without affecting the flow of the phase change material within the inner shell cavity.

[0015] Furthermore, the phase change material is one or a mixture of several of paraffin, erythritol, calcium chloride hexahydrate, and barium hydroxide octahydrate.

[0016] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art: The energy storage module is manufactured by 3D printing in one piece, which reduces the manufacturing difficulty, increases the load-bearing strength of the inner cavity of the energy storage module, reduces the assembly gap, improves the sealing performance, and reduces the assembly difficulty. By setting thermally conductive support columns inside the energy storage module, the load-bearing strength of the inner cavity of the energy storage module is improved without affecting the flow of phase change material in the inner shell cavity. By setting up filling holes and filling pipes, the difficulty of injecting phase change material into the inner cavity of the shell is reduced.

[0017] The above description of the disclosed content and the following description of the embodiments are intended to demonstrate and explain the spirit and principle of the present invention, and to provide a further explanation of the scope of the patent application of the present invention. Attached Figure Description

[0018] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0019] Figure 1 This is a three-dimensional schematic diagram of the energy storage module in this utility model; Figure 2 This is a partial cross-sectional schematic diagram (I) of the energy storage module in this utility model; Figure 3 This is a three-dimensional schematic diagram of the inner shell in this utility model; Figure 4 This is a partial cross-sectional schematic diagram (II) of the energy storage module in this utility model.

[0020] Explanation of icon numbers: 1. Outer shell; 11. Filling hole; 12. Connecting hole; 2. Inner shell; 21. Clearance channel; 22. Filling pipe; 3. Thermally conductive support column. Detailed Implementation

[0021] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model will be presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to this embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. To provide a deep understanding of this utility model, many specific details will be included in the following description. This utility model may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0022] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0023] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0024] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "provided with," "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0025] This invention provides an energy storage module that maintains a constant temperature for electronic components inside a satellite module by storing and releasing heat.

[0026] Please see Figures 1-4As shown, the energy storage module includes an outer shell 1 with an internal cavity and an inner shell 2 with an internal cavity. The inner shell 2 is disposed on the inner wall of the outer shell 1, forming a coating on the inner cavity of the outer shell 1. A thermally conductive support column 3 is provided within the inner cavity of the outer shell 1. An obstacle passage 21 is provided on the inner shell 2 for the thermally conductive support column 3 to pass through. The inner cavity of the inner shell 2 is filled with a phase change material. The two end faces of the thermally conductive support column 3 are connected to the two inner walls of the outer shell 1, respectively. The peripheral wall of the thermally conductive support column 3 is connected to the side wall of the obstacle passage 21.

[0027] In this embodiment, the outer shell 1, inner shell 2, and thermally conductive support column 3 are a 3D-printed integrated structure. The inner shell 2 is placed inside the cavity of the outer shell 1. Compared to the Chinese patent document CN213028919U, which describes a satellite thermal control energy storage module including a shell and end caps at both ends of the sealed shell, the energy storage module in this embodiment eliminates the end caps. Furthermore, the main body of the energy storage module in this embodiment is formed using 3D printing integrated molding technology, reducing the assembly gap of the energy storage module, improving its sealing performance, and reducing the assembly difficulty. Compared to the thermally conductive reinforcing ribs in CN213028919U, the thermally conductive support column 3 in this embodiment can more effectively support the inner cavity of the energy storage module, thereby improving the load-bearing capacity of the inner cavity. Simultaneously, the thermally conductive support column 3 does not affect the flow of the phase change material within the inner shell 2, thus ensuring a more uniform temperature distribution throughout the energy storage module.

[0028] In this embodiment, the outer shell 1 and the thermally conductive support pillar 3 are made of the same material. The outer shell 1 is an aluminum alloy outer shell. The inner shell 2 is a copper inner shell. The thermally conductive support pillar 3 is an aluminum alloy thermally conductive support pillar. The copper inner shell is used to improve the corrosion resistance of the inner cavity of the outer shell 1. Preferably, both the outer shell 1 and the thermally conductive support pillar 3 are made of 6061 aluminum alloy. The material of the inner shell 2 includes, but is not limited to, copper or pure copper.

[0029] In this embodiment, the phase change material includes, but is not limited to, organic and inorganic materials. The phase change material is one or a mixture of several of paraffin, erythritol, calcium chloride hexahydrate, and barium hydroxide octahydrate. Preferably, when the phase change material is organic, it is paraffin, sodium acetate trihydrate, or erythritol. When the phase change material is inorganic, it is calcium chloride hexahydrate or barium hydroxide octahydrate.

[0030] Please see Figures 3-4As shown, the outer shell 1 has a filling hole 11 on its side wall. The inner shell 2 has a corresponding filling tube 22. The filling tube 22 extends into the filling hole 11 and is located on the side wall of the outlet end of the filling hole 11. The filling hole 11 is suitable for welding with a connecting tube. When the connecting tube is welded to the filling hole 11, the operator can inject the phase change material into the inner cavity of the inner shell 2 sequentially through the connecting tube and the filling tube 22. After the phase change material is injected into the inner cavity of the inner shell 2, the operator clamps the connecting tube and then welds the clamped portion of the connecting tube connected to the filling hole 11 to seal the inner cavity of the inner shell 2.

[0031] Specifically, the filling hole 11 and the filling pipe 22 are coaxially arranged, and the axial direction of the thermally conductive support column 3 is perpendicular to the axial direction of the filling hole 11. In this embodiment, the filling hole 11 is a stepped hole. The filling hole 11 includes a large-diameter section near the outer wall of the outer shell 1 and a small-diameter section near the inner wall of the outer shell 1. The large-diameter section and the small-diameter section are connected. The inlet end of the filling pipe 22 extends into the small-diameter section, and the outer wall of the filling pipe 22 is connected to the small-diameter section. The large-diameter section is suitable for connection with the insertion pipe so that the phase change material is injected into the inner cavity of the inner shell 2 in sequence through the insertion pipe and the filling pipe 22. After the insertion pipe is inserted into the large-diameter section, the stepped hole structure makes it easier for workers to weld the insertion pipe to the filling hole 11.

[0032] The manufacturing method of the energy storage module is as follows: Insert the connector into the filling hole 11 and weld it in place so that the connector is fixedly connected to the outer casing 1. The phase change material is injected into the inner cavity of the inner shell 2 through the insertion tube; After the phase change material is injected, the staff uses tools to clamp the connector, dividing it into two sections: a short tube and a long tube. The short tube remains connected to the filling hole 11, while the long tube is separated from the outer shell 1. The broken end of the insertion tube connected to the filling hole 11 (i.e. the end of the short tube away from the filling hole 11) is welded and sealed to obtain the energy storage module.

[0033] In this embodiment, during the fabrication of the energy storage module, the connector is an aluminum tube, which is welded to the filling hole 11 using ER4043 aluminum-silicon welding wire. When the connector is clamped, preferably, the end face of the short tube away from the filling hole 11 is flush with the outer wall of the outer casing 1.

[0034] In this embodiment, the outer casing 1 is rectangular. Clearance areas are provided at the four corners of the outer casing 1. Connection holes 12 are provided in the clearance areas of the outer casing 1. The axial direction of the connection holes 12 is parallel to the axial direction of the heat-conducting support column 3.

[0035] Furthermore, both the outer shell 1 and the inner shell 2 have a bilaterally symmetrical structure. A liquid filling hole 11 is located at the center of the front wall of the outer shell 1. The thermally conductive support pillar 3 has a circular cross-section. There are at least five thermally conductive support pillars 3. These five thermally conductive support pillars 3 are distributed bilaterally symmetrically within the inner cavity of the outer shell 1.

[0036] In this embodiment, the wall thickness of the outer shell 1 is 1.5mm to 2.5mm. The wall thickness of the inner shell 2 is 0.1mm to 0.3mm. Preferably, the wall thickness of the outer shell 1 is 1.5mm. The wall thickness of the inner shell 2 is 0.2mm. The distance between the liquid inlet end face of the filling tube 22 and the stepped surface of the filling hole 11 is greater than or equal to 1.5mm.

[0037] Furthermore, the inner shell 2 includes a main body and two front extensions located at the front end of the main body. The front extensions are symmetrically positioned at the front end of the main body. A filling tube 22 is located at the front end of the main body, between the two front extensions. A clearance channel 21 is provided on the main body. The main body and the two front extensions constitute a shell structure with an internal cavity.

[0038] In existing technologies, the end caps at both ends of the shell and the sealing shell are processed independently. After both are processed, they are then welded together, resulting in numerous assembly gaps, many weld seams, and poor sealing. Compared to existing technologies, this invention uses a 3D printing integrated molding method to manufacture the energy storage module, reducing manufacturing difficulty. While increasing the load-bearing capacity of the energy storage module's inner cavity, it reduces assembly gaps, improves sealing, and lowers assembly difficulty. By incorporating thermally conductive support pillars within the energy storage module, the load-bearing capacity of the inner cavity is increased without affecting the flow of the phase change material within the inner shell. The addition of filling holes and filling pipes reduces the difficulty of injecting the phase change material into the inner shell.

[0039] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. An energy storage module, characterized in that, It includes an outer shell (1) with an internal cavity and an inner shell (2) disposed on the inner wall of the outer shell (1); the inner cavity of the outer shell (1) is provided with a heat-conducting support column (3), and the inner shell (2) is provided with a clearance channel (21) for the heat-conducting support column (3) to pass through; the inner cavity of the inner shell (2) is filled with a phase change material. The two ends of the heat-conducting support column (3) are respectively connected to the inner walls of the outer shell (1) on both sides, and the peripheral wall of the heat-conducting support column (3) is connected to the side wall of the clearance channel (21). The outer shell (1), the inner shell (2), and the thermally conductive support column (3) are a 3D printed integral structure.

2. The energy storage module according to claim 1, characterized in that, The outer shell (1) has a liquid filling hole (11) on its side wall, and the inner shell (2) is provided with a corresponding liquid filling tube (22). The liquid filling tube (22) extends into the liquid filling hole (11) and is disposed on the side wall of the liquid outlet end of the liquid filling hole (11). The filling hole (11) is adapted to be welded to the insertion tube. After the phase change material is injected into the inner cavity of the inner shell (2) through the insertion tube and the filling tube (22) in sequence, the insertion tube is clamped off, and then the clamped part of the insertion tube connected to the filling hole (11) is welded and sealed so as to seal the inner cavity of the inner shell (2).

3. The energy storage module according to claim 2, characterized in that, The filling hole (11) is a stepped hole, including a large-diameter section near the outer wall of the outer shell (1) and a small-diameter section near the inner wall of the outer shell (1); The larger diameter section is connected to the smaller diameter section; The liquid inlet end of the filling tube (22) extends into the small diameter section, and the outer wall of the filling tube (22) is connected to the small diameter section; The large-diameter section is adapted to be connected to the insertion tube so that the phase change material is injected into the inner cavity of the inner shell (2) in sequence via the insertion tube and the filling tube (22).

4. The energy storage module according to claim 2, characterized in that, The filling hole (11) is coaxially arranged with the filling pipe (22), and the axial direction of the heat-conducting support column (3) is perpendicular to the axial direction of the filling hole (11).

5. The energy storage module according to claim 2, characterized in that, Both the outer shell (1) and the inner shell (2) are symmetrical structures; the filling hole (11) is opened at the center of the front wall of the outer shell (1); The thermally conductive support column (3) has a circular cross-section; there are at least five thermally conductive support columns (3), which are symmetrically distributed in the inner cavity of the outer shell (1).

6. The energy storage module according to claim 5, characterized in that, The inner shell (2) includes a main body and a front extension portion disposed at the front end of the main body; there are two front extension portions, which are symmetrically disposed at the front end of the main body; the filling tube (22) is disposed at the front end of the main body and is located between the two front extension portions; The avoidance passage (21) is provided on the main body.

7. The energy storage module according to claim 1, characterized in that, The outer shell (1) and the thermally conductive support column (3) are made of the same material; the outer shell (1) is an aluminum alloy outer shell, the inner shell (2) is a copper inner shell, and the thermally conductive support column (3) is an aluminum alloy thermally conductive support column.

8. The energy storage module according to claim 1, characterized in that, The outer shell (1) has a wall thickness of 1.5mm to 2.5mm, and the inner shell (2) has a wall thickness of 0.1mm to 0.3mm.

9. The energy storage module according to claim 1, characterized in that, The outer shell (1) is rectangular; the four corners of the outer shell (1) are provided with clearance areas, and the clearance areas of the outer shell (1) are provided with connecting holes (12), the axis of the connecting holes (12) is parallel to the axis of the heat-conducting support column (3).

10. The energy storage module according to claim 1, characterized in that, The phase change material is one or a mixture of several of paraffin, erythritol, calcium chloride hexahydrate, and barium hydroxide octahydrate.

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