A ground stake assembly for a satellite battery pack

Abstract

The application discloses a ground stake assembly for a satellite battery pack, which comprises a grounding bolt, a first OT terminal, a second OT terminal, a lower insulating pad and an upper insulating pad, the battery pack mechanism is provided with a through hole, the lower insulating pad and the upper insulating pad are both T-shaped sleeve structures, the lower insulating pad and the upper insulating pad are sleeved on the battery pack mechanism through the through hole, one end of the grounding bolt is inserted into the sleeve of the lower insulating pad and is isolated from the battery pack mechanism, a rotation prevention structure is arranged between the grounding bolt and the lower insulating pad, the second OT terminal is sleeved on a boss of the upper insulating pad and is isolated from the grounding bolt and connected with the battery pack mechanism, the first OT terminal is sleeved on the grounding bolt, the two OT terminals are connected in series through a wire and at least one grounding resistor, and the grounding bolt is connected with a satellite structure ground. The ground stake assembly is designed to be insulated and installed, the two OT terminals are both designed in the ground stake assembly, and space is saved; in addition, the ground stake assembly is designed to be anti-rotation, and can still play a function of preventing loosening after being disassembled and assembled for many times.

Description

Technical Field

[0001] This application relates to the field of aerospace power control technology, and in particular to a grounding pile assembly for satellite battery packs. Background Technology

[0002] During their operation in orbit, spacecraft operate in a complex environment. To prevent electronic equipment malfunctions caused by solar ultraviolet radiation and high-energy particle radiation, grounding piling components must be designed on the spacecraft. A good grounding design allows electrostatic charges accumulated on the spacecraft surface to be discharged to the satellite's structural grounding system through a low-impedance path, reducing arc discharge between different parts of the spacecraft and protecting it from electromagnetic interference.

[0003] Common satellite battery pack grounding pile components typically employ a 50kΩ to 100kΩ electrostatic discharge resistor connected in series between the battery pack structure and the satellite structure. This method occupies a significant amount of space, leading to space constraints and complex assembly issues in applications with smaller envelope dimensions. For example, in the invention patent CN 110299265 B, two bolts need to be designed into the product, connected by a high-resistance resistor connected in series. Summary of the Invention

[0004] To address the aforementioned problems, this invention designs a grounding pile assembly for satellite battery packs. The grounding pile assembly adopts an integrated design, providing a grounding pile assembly with simple structure, convenient installation, and high space utilization while ensuring high product reliability.

[0005] This invention relates to a grounding stake assembly for a satellite battery pack, comprising a grounding bolt, two OT terminals, a lower insulating pad, and an upper insulating pad. The battery pack structure has a through hole. Both the lower and upper insulating pads are T-shaped sleeve structures, passing through the through hole and fitted onto the battery pack structure. One end of the grounding bolt is inserted into the lower insulating pad sleeve, isolating it from the battery pack structure, and has an anti-rotation structure between it and the lower insulating pad. One OT terminal is fitted onto the upper insulating pad protrusion, isolating it from the grounding bolt, and is connected to the battery pack structure. The other OT terminal is fitted onto the grounding bolt. The two OT terminals are connected in series with a wire containing at least one grounding resistor. The grounding bolt is structurally connected to the satellite.

[0006] Optionally, the grounding bolt is a threaded rod structure.

[0007] Optionally, the anti-rotation structure is provided with a groove inside the lower insulating sleeve that matches the bottom cross section of the grounding bolt, in order to prevent the grounding bolt from rotating.

[0008] Optionally, the bottom cross section of the grounding bolt, in conjunction with the lower insulating pad, is designed as a rectangular anti-rotation structure, and the through hole of the battery pack mechanism is designed as a rectangular through hole.

[0009] Optionally, a fastening nut is provided at the other end of the grounding bolt, and a spring washer and a flat washer are provided between the fastening nut and the OT terminal sleeved on the grounding bolt.

[0010] Optionally, the grounding bolt is made of metal.

[0011] Optionally, the grounding bolt is made of copper with a gold-plated outer wall.

[0012] Optionally, the fastening nut is made of metal.

[0013] Optionally, the fastening nut is made of copper and has a gold-plated outer wall.

[0014] Optionally, the lower insulating pad and the upper insulating pad are made of polyimide insulating material.

[0015] Compared with the prior art, the grounding pile assembly for satellite battery packs of the present invention has a simple structure, is easy to install and has a high space utilization rate. Specifically, it adopts an insulated installation design, with both OT terminals designed in the grounding pile assembly, eliminating the need for additional bolts and saving space. In addition, the grounding pile assembly adopts an anti-rotation design, and the structure can still play a role in preventing loosening after multiple disassembly and assembly. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the grounding pile assembly for a satellite battery bank in an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the grounding bolt and lower insulating pad structure in an embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of the lower insulating pad structure in an embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of the battery pack structure in an embodiment of the present invention;

[0020] Figure 5 This is a schematic diagram of the upper insulating pad structure in an embodiment of the present invention;

[0021] The attached diagrams are labeled as follows: 1. Grounding bolt; 2. Fastening nut; 3. Spring washer; 4. Flat washer; 5. First OT terminal; 6. Upper insulating pad; 7. Battery pack structure; 8. Lower insulating pad; 9. Wire; 10. Grounding resistor; 11. Second OT terminal. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. In this invention, unless otherwise stated, directional terms such as "inner" and "outer" generally refer to the inner and outer contours of the corresponding object. Directional terms such as "up, down, left, right, front, back, top, and bottom" generally refer to the upper, lower, left, right, front, back, top, and bottom of the corresponding object.

[0023] Furthermore, the terms "first," "second," "third," etc., may be used herein to describe various directions, actions, steps, or elements, but these directions, actions, steps, or elements are not limited by these terms. These terms are only used to distinguish a first direction, action, step, or element from another direction, action, step, or element. For example, without departing from the scope of this application, a first OT terminal may be referred to as a second OT terminal, and similarly, a second OT terminal may be referred to as a first OT terminal. Both the first OT terminal and the second OT terminal are OT terminals, but they are not the same OT terminal. The terms "first," "second," etc., should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0024] See Figures 1-5 As shown, an embodiment provides a grounding stake assembly for a satellite battery pack, including a grounding bolt 1, a first OT terminal 5, a second OT terminal 11, a lower insulating pad 8, and an upper insulating pad 6. The battery pack mechanism 7 has a through hole. Both the lower insulating pad 8 and the upper insulating pad 6 are T-shaped sleeve structures. The lower insulating pad 8 and the upper insulating pad 6 pass through the through hole and are sleeved onto the battery pack mechanism 7. One end of the grounding bolt 1 is inserted into the sleeve of the lower insulating pad 8 and isolated from the battery pack mechanism 7. An anti-rotation structure is provided between the grounding bolt 1 and the lower insulating pad 8. The second OT terminal 11 is sleeved on the protrusion of the upper insulating pad 6 and isolated from the grounding bolt 1, and connected to the battery pack mechanism 7. The first OT terminal 5 is sleeved on the grounding bolt 1, and the two are in a conductive state. At least one grounding resistor 10 is connected in series between the two OT terminals by a wire 9. Preferably, one or two 50kΩ to 100kΩ grounding resistors are connected in series between the two OT terminals. The grounding bolt 1 is structurally connected to the satellite, thereby achieving high-resistance grounding between the battery pack and the satellite.

[0025] See Figures 1-2 As shown, the grounding bolt 1 is a screw structure with external threads.

[0026] See Figures 1-3As shown, the anti-rotation structure is provided in the lower insulating pad 8, which has a groove that matches the bottom cross section of the grounding bolt 1, to prevent the grounding bolt 1 from rotating and to prevent loosening.

[0027] See Figures 1-3 As shown, the bottom cross section of the grounding bolt 1, in conjunction with the lower insulating pad 8, is designed as a rectangular anti-rotation structure, and the through hole of the battery pack mechanism 7 is designed as a rectangular through hole.

[0028] In a preferred embodiment, the lower insulating pad 8 is designed with a rectangular anti-rotation structure, and the grounding bolt 1 is fitted inside the through hole to prevent rotation of the grounding bolt 1. The lower insulating pad 8 is a T-shaped sleeve, and both are then installed into the battery pack structure 7 with a rectangular hole to prevent rotation of the grounding bolt 1 during assembly. The lower insulating pad 8 is made of insulating materials such as polyimide, which isolates the grounding bolt 1 from the battery pack structure 7 to prevent short circuits. The battery pack structure 7 is designed with a rectangular through hole, which prevents rotation of the grounding bolt 1 and the lower insulating pad 8 when they are installed in the structure. The battery pack structure 7 is fitted onto the lower insulating pad 8 and the upper insulating pad 6, achieving insulation between the grounding bolt 1 and the battery pack structure 7.

[0029] See Figure 1 As shown, a fastening nut 2 is provided at the other end of the grounding bolt 1, and a spring washer 3 and a flat washer 4 are provided between the fastening nut 2 and the first OT terminal 5.

[0030] In a preferred embodiment, the grounding bolt 1 is made of metal; more preferably, the grounding bolt 1 is made of copper and has its outer wall plated with gold.

[0031] In a preferred embodiment, the fastening nut 2 is made of metal; more preferably, the fastening nut 2 is made of copper and has its outer wall plated with gold.

[0032] In a preferred embodiment, the lower insulating pad 8 and the upper insulating pad 6 are made of polyimide insulating material. The upper insulating pad 6 is a T-shaped sleeve that isolates the grounding bolt 1 from the battery pack structure 7, preventing them from short-circuiting. The second OT terminal 11 is fitted onto the protrusion of the upper insulating pad 6, isolating the second OT terminal 11 from the grounding bolt 1 and preventing them from short-circuiting. This achieves both conductivity between the second OT terminal 11 and the battery pack structure 7 and prevention of short-circuiting with the grounding bolt 1.

[0033] In a preferred embodiment, an additional OT terminal 5 is attached to the grounding bolt 1 above the upper insulating pad 6, and one or two 50kΩ to 100kΩ grounding resistors 10 are connected in series between the two OT terminals by a wire 9 to achieve static electricity release.

[0034] In summary, the grounding pile assembly for satellite battery packs provided by this invention has a simple structure, is easy to install, and has high space utilization compared with the prior art. Specifically, it adopts an insulated installation design, with both OT terminals designed into the grounding pile assembly, eliminating the need for additional bolts and saving space. In addition, the grounding pile assembly adopts an anti-rotation design, and the structure can still play a role in preventing loosening after multiple disassemblies and reassemblies.

[0035] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A grounding stake assembly for a satellite battery bank, characterized in that, The battery pack mechanism (7) includes a grounding bolt (1), a first OT terminal (5), a second OT terminal (11), a lower insulating pad (8), and an upper insulating pad (6). The battery pack mechanism (7) has a through hole. The lower insulating pad (8) and the upper insulating pad (6) are both T-shaped sleeve structures. The lower insulating pad (8) and the upper insulating pad (6) pass through the through hole and are sleeved on the battery pack mechanism (7). One end of the grounding bolt (1) is inserted into the sleeve of the lower insulating pad (8) and isolated from the battery pack mechanism (7). An anti-rotation structure is provided between the grounding bolt (1) and the lower insulating pad (8). The second OT terminal (11) is sleeved on the protrusion of the upper insulating pad (6) and isolated from the grounding bolt (1), and connected to the battery pack mechanism (7). The first OT terminal (5) is sleeved on the grounding bolt (1). At least one grounding resistor (10) is connected in series between the two OT terminals by a wire (9). The grounding bolt (1) is connected to the satellite structure ground.

2. The grounding stake assembly for satellite battery banks according to claim 1, characterized in that, The grounding bolt (1) is a screw structure with external threads.

3. The grounding stake assembly for satellite battery banks according to claim 1, characterized in that, The anti-rotation structure is provided in the lower insulating pad (8) sleeve with a groove that matches the bottom cross section of the grounding bolt (1) to prevent the grounding bolt (1) from rotating.

4. The grounding stake assembly for a satellite battery bank according to claim 3, characterized in that, The bottom section of the grounding bolt (1) is designed as a rectangular anti-rotation structure in conjunction with the lower insulating pad (8), and the through hole of the battery pack mechanism (7) is designed as a rectangular through hole.

5. The grounding stake assembly for a satellite battery bank according to claim 1, characterized in that, The other end of the grounding bolt (1) is provided with a fastening nut (2), and a spring washer (3) and a flat washer (4) are provided between the fastening nut (2) and the first OT terminal (5).

6. The grounding stake assembly for a satellite battery bank according to claim 1, characterized in that, The grounding bolt (1) is made of metal.

7. The grounding stake assembly for a satellite battery bank according to claim 6, characterized in that, The metal is copper, and the outer wall of the grounding bolt (1) is plated with gold.

8. The grounding stake assembly for a satellite battery bank according to claim 5, characterized in that, The fastening nut (2) is made of metal.

9. The grounding stake assembly for a satellite battery bank according to claim 8, characterized in that, The metal is copper, and the outer wall of the fastening nut (2) is plated with gold.

10. The grounding stake assembly for a satellite battery bank according to claim 1, characterized in that, The lower insulating pad (8) and the upper insulating pad (6) are made of polyimide insulating material.

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