Secondary power supply with high conversion efficiency for satellite

Abstract

The invention discloses a satellite secondary power supply with high conversion efficiency, and relates to the technical field of secondary power supplies, the satellite secondary power supply comprises a secondary power supply, the front side of the secondary power supply is fixedly connected with a display panel, the rear side of the secondary power supply is fixedly connected with a line bank, and the left and right sides of the secondary power supply are fixedly connected with heat dissipation mechanisms. Protection mechanisms are arranged at four corners of the secondary power supply, and a closed top cover is fixedly mounted at the top of the secondary power supply. According to the heat dissipation device, hot air in the secondary power supply can be driven to circulate in the heat dissipation box through the flow guide mechanism, so that heat in the heat dissipation box can be absorbed through the heat absorption copper sheet, the absorbed heat is dissipated into the air guide pipe, the heat can be brought out through circulation of external air in the air guide pipe, heat dissipation of the secondary power supply is achieved, and the service life of the secondary power supply is prolonged. Therefore, the heat dissipation effect of the secondary power supply is better, the performance reduction of the secondary power supply caused by high temperature is avoided, and the conversion efficiency of the secondary power supply is ensured not to be influenced.

Description

Technical Field

[0001] The invention relates to the technical field of secondary power supplies, and in particular to a secondary power supply with high conversion efficiency for satellites. Background Art

[0002] The secondary power supply refers to a device that converts the main power supply electrical energy into another form or specification of electrical energy to meet the needs of different electrical equipment. It is an important part of the aircraft power system and can convert DC voltage into AC voltage or high-voltage DC voltage. It is the main component of common emergency power supplies. The secondary power supply module for satellites refers to a device that converts the primary bus voltage to supply different electrical loads with different voltage requirements.

[0003] The existing technology has the following problems:

[0004] When the existing satellite secondary power supply is in use, the heat dissipation method adopted is relatively simple, so that the heat inside the device cannot be directly dissipated, which will affect the performance of the secondary power supply and reduce the conversion efficiency of the secondary power supply. At the same time, the overall strength of the existing satellite secondary power supply is low. When it is hit or dropped by the outside, it lacks effective protection, which can easily cause damage to the satellite secondary power supply. At the same time, when the existing satellite secondary power supply fails, it is not convenient to disassemble the top plate in time, which makes the maintenance of the satellite secondary power supply very inconvenient and is not conducive to the use of the satellite secondary power supply. Summary of the invention

[0005] The present invention provides a secondary power supply with high conversion efficiency for satellite to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A secondary power supply with high conversion efficiency for satellite includes a secondary power supply, a display panel is fixedly connected to the front side of the secondary power supply, a terminal block is fixedly connected to the rear side of the secondary power supply, a heat dissipation mechanism is fixedly connected to the left and right sides of the secondary power supply, protective mechanisms are arranged at the four corners of the secondary power supply, and a closed top cover is fixedly installed on the top of the secondary power supply.

[0008] The heat dissipation mechanism includes a heat dissipation box, and the two heat dissipation boxes are respectively fixedly connected to the left and right sides of the secondary power supply, three conduction grooves are opened on the side of the heat dissipation box close to the secondary power supply, the top of the heat dissipation box is fixedly connected with an air inlet cylinder, the inner surface of the air inlet cylinder is fixedly connected with a dustproof net on the side away from the secondary power supply, the bottom of the air inlet cylinder is fixedly connected with an air guide pipe, the bottom of the air guide pipe penetrates into the interior of the heat dissipation box, the outer surface of the air guide pipe is fixedly connected with a plurality of heat-absorbing copper sheets, the outer surface of the heat-absorbing copper sheet is fixedly connected to the inner surface of the heat dissipation box, the interior of the heat-absorbing copper sheet is provided with three flow grooves penetrating front and back, and the middle part of the bottom end of the air guide pipe is fixedly connected with a flow guide mechanism.

[0009] The protective mechanism includes a buffer baffle, which is arranged on the outer surface of the secondary power supply, and tightening columns are arranged on the upper and lower sides of the inner surface of the buffer baffle. A sliding groove 1 is opened at each of the four internal corners of the secondary power supply, and one end of the tightening column away from the buffer baffle penetrates into the interior of the sliding groove 1 and is fixedly connected with a sliding top plate. The outer surface of the sliding top plate is slidably connected to the inner surface of the sliding groove 1, and a spring 1 is fixedly connected to the opposite surfaces of the two sliding top plates, and one end of the sliding top plate away from the tightening column is fixedly connected to a spring 2, and one end of the spring 2 away from the sliding top plate is fixedly connected to the inner wall of the sliding groove 1.

[0010] A further improvement of the technical solution of the present invention is that the air guide mechanism includes a connecting tube, which is fixedly connected to the middle of the bottom end of the air guide pipe and is mutually conductive with the air guide pipe, and a motor is fixedly connected to the side of the connecting tube away from the secondary power supply.

[0011] A further improvement of the technical solution of the present invention is that the air guide mechanism includes a connecting tube, which is fixedly connected to the middle of the bottom end of the air guide pipe and is mutually conductive with the air guide pipe, and a motor is fixedly connected to the side of the connecting tube away from the secondary power supply.

[0012] A further improvement of the technical solution of the present invention is that: one end of the tightening column close to the buffer baffle is fixedly connected to a connecting slide, the left and right sides of the outer surface of the connecting slide are fixedly connected to limiting slides, and the upper and lower sides of the inner surface of the buffer baffle are provided with connecting slide grooves, and the connecting slide is slidably connected to the inside of the connecting slide groove.

[0013] A further improvement of the technical solution of the present invention is that: limiting grooves are provided on both sides of the inner surface of the connecting groove, the limiting slide plate is slidably connected inside the limiting groove, and the front and rear ends of the connecting slide plate are fixedly connected with spring three, and the end of the spring three away from the connecting slide plate is fixedly connected to the inner wall of the connecting groove.

[0014] A further improvement of the technical solution of the present invention is that the closed top cover includes a closed cover plate, which is arranged on the top of the secondary power supply, and two rotating pressure plates are rotatably connected to the left and right sides of the top of the closed cover plate, and a pressure block is fixedly connected to the bottom of the rotating pressure plate close to the side of the secondary power supply.

[0015] A further improvement of the technical solution of the present invention is that the bottom end of the pressing block penetrates through the bottom of the closed cover plate and is movably connected to pull rods on both the front and rear sides, and one end of the two pulling rods away from the pressing block is movably connected to a sliding baffle, and sliding grooves 2 are provided on both the left and right sides of the bottom of the closed cover plate, and the sliding baffle is slidably connected inside the sliding grooves 2.

[0016] A further improvement of the technical solution of the present invention is that: a spring four is fixedly connected to the side of the sliding baffle away from the secondary power supply, and one end of the spring four away from the sliding baffle is fixedly connected to the inner wall of the sliding groove two, plug-in grooves are provided on both the left and right sides of the top of the secondary power supply, and a positioning column is fixedly connected to the side of the sliding baffle close to the secondary power supply, and one end of the positioning column away from the sliding baffle penetrates into the interior of the plug-in groove.

[0017] Due to the adoption of the above technical solution, the present invention has the following technical advances compared with the prior art:

[0018] 1. The present invention provides a secondary power supply with high conversion efficiency for satellites. Through the mutual cooperation among a heat sink, a conduction groove, an air inlet tube, a dustproof net, an air duct, a heat-absorbing copper sheet, a flow groove, and a flow guide mechanism, the flow guide mechanism can drive the hot air in the secondary power supply to circulate in the heat sink, so that the heat therein can be absorbed by the heat-absorbing copper sheet and the absorbed heat can be dissipated into the air duct. The circulation of external air in the air duct can bring out the heat, realize the heat dissipation of the secondary power supply, make the heat dissipation effect of the secondary power supply better, avoid the performance degradation of the secondary power supply due to high temperature, and ensure that the conversion efficiency of the secondary power supply is not affected.

[0019] 2. The present invention provides a secondary power supply with high conversion efficiency for satellites. Through the mutual cooperation among a buffer baffle, a tightening column, a sliding top plate, a spring one, a spring two, a connecting slide plate, a limiting slide plate, a connecting slide groove, a limiting slide groove, and a spring three, when the secondary power supply is collided or dropped, the buffer baffle will be squeezed, so that the tightening column can push the sliding top plate to squeeze the spring one, which can buffer the impact on the secondary power supply. At the same time, the spring three can also be squeezed by the connecting slide plate, so that the buffering effect is better, the damage of the secondary power supply is avoided, and the use of the secondary power supply is more convenient.

[0020] 3. The present invention provides a secondary power supply with high conversion efficiency for satellites. Through the mutual cooperation among the closing cover, the rotating pressure plate, the pressure block, the pulling rod, the sliding baffle, the spring and the positioning plug, when the closing cover is disassembled, the rotating pressure plate can be rotated by pressing the rotating pressure plate, so that the pulling rod can pull the sliding baffle to slide, and the positioning plug can slide out from the inside of the plug-in slot, so that the closing cover is free from restriction, which makes it convenient to open the closing cover by rotating the pressure plate, so that the secondary power supply can be repaired conveniently when a fault occurs, and the use of the secondary power supply is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a front structural schematic diagram of the secondary power supply of the present invention;

[0022] Figure 2 It is a schematic diagram of the back structure of the secondary power supply of the present invention;

[0023] Figure 3 It is a schematic cross-sectional structure diagram of the heat dissipation mechanism of the present invention;

[0024] Figure 4 It is a schematic diagram of the cross-sectional structure of the flow guiding mechanism of the present invention;

[0025] Figure 5 It is a schematic cross-sectional structure diagram of the protection mechanism of the present invention;

[0026] Figure 6 It is a schematic diagram of the cross-sectional structure of the buffer baffle of the present invention;

[0027] Figure 7 It is a schematic cross-sectional structure diagram of the closed top cover of the present invention.

[0028] In the figure: 1. secondary power supply; 2. display panel; 3. terminal block; 4. heat dissipation mechanism; 41. heat dissipation box; 42. conduction groove; 43. air inlet tube; 44. dust screen; 45. air guide duct; 46. heat absorbing copper sheet; 47. circulation groove; 48. guide mechanism; 481. connecting tube; 482. motor; 483. guide fan; 484. guide fan; 5. protection mechanism; 51. buffer baffle; 52. tightening column; 53. sliding top plate; 54. spring one; 55. spring two; 56. connecting slide plate; 57. limiting slide plate; 58. connecting slide groove; 59. limiting slide groove; 510. spring three; 6. closing top cover; 61. closing cover plate; 62. rotating pressure plate; 63. pressure block; 64. pulling rod; 65. sliding baffle; 66. spring four; 67. positioning column. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with embodiments:

[0030] Example 1

[0031] like Figure 1-4 As shown, the present invention provides a secondary power supply with high conversion efficiency for satellite, including a secondary power supply 1, a display panel 2 is fixedly connected to the front side of the secondary power supply 1, a terminal block 3 is fixedly connected to the rear side of the secondary power supply 1, a heat dissipation mechanism 4 is fixedly connected to the left and right sides of the secondary power supply 1, a protective mechanism 5 is arranged at the four corners of the secondary power supply 1, a closed top cover 6 is fixedly installed on the top of the secondary power supply 1, the heat dissipation mechanism 4 includes a heat dissipation box 41, two heat dissipation boxes 41 are respectively fixedly connected to the left and right sides of the secondary power supply 1, three conduction grooves 42 are opened on the side of the heat dissipation box 41 close to the secondary power supply 1, an air inlet 43 is fixedly connected to the top of the heat dissipation box 41, a dustproof net 44 is fixedly connected to the side of the inner surface of the air inlet 43 away from the secondary power supply 1, an air guide 45 is fixedly connected to the bottom of the air inlet 43, and the air guide 45 The bottom of 45 penetrates into the interior of the heat dissipation box 41, and the outer surface of the air duct 45 is fixedly connected with a plurality of heat-absorbing copper sheets 46, and the outer surface of the heat-absorbing copper sheets 46 is fixedly connected to the inner surface of the heat dissipation box 41, and the interior of the heat-absorbing copper sheets 46 is provided with three front-to-rear flow grooves 47, and the middle part of the bottom end of the air duct 45 is fixedly connected with a guide mechanism 48, and the guide mechanism 48 includes a connecting tube 481, and the connecting tube 481 is fixedly connected to the middle part of the bottom end of the air duct 45 and is mutually conductive with the air duct 45, and a motor 482 is fixedly connected to the side of the connecting tube 481 away from the secondary power supply 1, and the output shaft of the motor 482 penetrates into the interior of the connecting tube 481 and is fixedly connected with a guide fan 483, and the end of the guide fan 483 close to the secondary power supply 1 penetrates into the interior of the middle conductive groove 42 and is fixedly connected with a guide fan 484.

[0032] In the present embodiment, when the secondary power source 1 is to be cooled, the guide fan 483 can be started to drive the guide fan 484 to rotate, thereby driving the hot air in the secondary power source 1 to circulate inside the heat dissipation box 41 through the conduction groove 42, so that the heat-absorbing copper sheet 46 can absorb the heat in the hot air through the circulation groove 47, and dissipate the absorbed heat into the air duct 45. At the same time, the rotation of the guide fan 483 can allow the external air to circulate in the air duct 45 through the air inlet tube 43, so that the heat dissipated by the heat-absorbing copper sheet 46 can be taken out, and the heat dissipation of the secondary power source 1 is realized, so that the heat dissipation effect of the secondary power source 1 is better, and the performance of the secondary power source 1 caused by high temperature is avoided, and the conversion efficiency of the secondary power source 1 is ensured not to be affected.

[0033] Example 2

[0034] like Figure 5-6As shown, on the basis of Example 1, the present invention provides a technical solution: preferably, the protective mechanism 5 includes a buffer baffle 51, the buffer baffle 51 is arranged on the outer surface of the secondary power supply 1, and tightening columns 52 are arranged on the upper and lower sides of the inner surface of the buffer baffle 51. The four corners inside the secondary power supply 1 are provided with a sliding groove 1, and the end of the tightening column 52 away from the buffer baffle 51 penetrates into the interior of the sliding groove 1 and is fixedly connected with a sliding top plate 53, the outer surface of the sliding top plate 53 is slidably connected to the inner surface of the sliding groove 1, and the opposite surfaces of the two sliding top plates 53 are fixedly connected with a spring 1 54, and the end of the sliding top plate 53 away from the tightening column 52 is fixedly connected with a spring 2 55, and the end of the spring 2 55 away from the sliding top plate 53 is fixedly connected to the inner wall of the sliding groove 1. Fixed connection, one end of the tightening column 52 close to the buffer baffle 51 is fixedly connected with a connecting slide 56, the left and right sides of the outer surface of the connecting slide 56 are fixedly connected to the limiting slide 57, the upper and lower sides of the inner surface of the buffer baffle 51 are provided with connecting slide grooves 58, the connecting slide 56 is slidably connected to the inside of the connecting slide groove 58, and the left and right sides of the inner surface of the connecting slide groove 58 are provided with limiting slide grooves 59, the limiting slide 57 is slidably connected to the inside of the limiting slide groove 59, and the sliding direction of the connecting slide 56 can be limited by sliding the limiting slide 57 in the limiting slide groove 59, the front and rear ends of the connecting slide 56 are fixedly connected with spring three 510, and the end of the spring three 510 away from the connecting slide 56 is fixedly connected to the inner wall of the connecting slide groove 58.

[0035] In this embodiment, when the secondary power supply 1 is collided or dropped, the buffer baffle 51 will be squeezed, so that the pressing column 52 can push the sliding top plate 53 to slide inside the sliding groove 1, thereby squeezing the spring 1 54 and pulling the spring 2 55, so as to buffer the impact on the secondary power supply 1. At the same time, by sliding the connecting slide plate 56 in the connecting slide groove 58, the spring 3 510 can be squeezed, so that the buffering effect of the secondary power supply 1 is better, the damage of the secondary power supply 1 is avoided, and the use of the secondary power supply 1 is more convenient.

[0036] Example 3

[0037] like Figure 7As shown, on the basis of embodiment 1, the present invention provides a technical solution: preferably, the closed top cover 6 includes a closed cover plate 61, the closed cover plate 61 is arranged on the top of the secondary power supply 1, and the left and right sides of the top of the closed cover plate 61 are rotatably connected to two rotating pressure plates 62, and the bottom of the rotating pressure plate 62 is fixedly connected to a pressure block 63 on the side close to the secondary power supply 1, and the bottom end of the pressure block 63 penetrates the bottom of the closed cover plate 61 and is movably connected to a pull rod 64 on both the front and rear sides, and the two pull rods 64 are movably connected to a sliding The movable baffle 65 and the closing cover 61 are provided with sliding grooves 2 on both sides of the bottom, the sliding baffle 65 is slidably connected to the inside of the sliding groove 2, the side of the sliding baffle 65 away from the secondary power supply 1 is fixedly connected with a spring 4 66, and the end of the spring 4 66 away from the sliding baffle 65 is fixedly connected to the inner wall of the sliding groove 2, and the top of the secondary power supply 1 is provided with plug-in grooves on both sides, and the side of the sliding baffle 65 close to the secondary power supply 1 is fixedly connected with a positioning column 67, and the end of the positioning column 67 away from the sliding baffle 65 passes through the inside of the plug-in groove.

[0038] In this embodiment, when the closed top cover 6 is disassembled, the rotating pressure plate 62 can be rotated by pressing the rotating pressure plate 62, so that the pressure block 63 can slide downward, so that the pulling rod 64 can pull the sliding baffle 65 to slide inside the sliding groove 2 and squeeze the spring 4 66, so that the positioning pin 67 can slide out from the inside of the plug-in groove, so that the closed top cover 6 is free from restriction, which makes it convenient to open the closed top cover 6 by rotating the pressure plate 62, so that the secondary power supply 1 can be repaired conveniently when a fault occurs in the secondary power supply 1, and the use of the secondary power supply 1 is more convenient.

[0039] The following is a detailed description of the working principle of the satellite's high-conversion-efficiency secondary power supply.

[0040] like Figure 1-7As shown, when the satellite secondary power supply is in use, the rotation of the duct fan 484 can drive the hot air in the secondary power supply 1 to circulate inside the heat sink 41, so that the heat-absorbing copper sheet 46 can absorb the heat in the hot air and dissipate the heat to the air duct 45. The heat can be taken out by the duct fan 483 to achieve heat dissipation of the secondary power supply 1 and avoid the performance degradation of the secondary power supply 1 due to high temperature. In addition, when the secondary power supply 1 is hit or dropped, the buffer baffle 51 will be squeezed, so that the column 52 can be tightened to push the sliding top plate 53 to Spring one 54 is squeezed and can pull spring two 55, so that the impact on the secondary power supply 1 can be buffered, avoiding damage to the secondary power supply 1, and by pressing the rotating pressure plate 62, the rotating pressure plate 62 can be rotated, thereby driving the pulling rod 64 to pull the sliding baffle 65 to slide, so that the positioning pin 67 can slide out from the inside of the plug-in slot, making it convenient to open the closed top cover 6 by rotating the pressure plate 62, so that when the secondary power supply 1 fails, it is convenient to repair the secondary power supply 1, making the use of the secondary power supply 1 more convenient.

[0041] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A secondary power supply with high conversion efficiency for a satellite, comprising a secondary power supply (1), a display panel (2) being fixedly connected to the front side of the secondary power supply (1), and a terminal block (3) being fixedly connected to the rear side of the secondary power supply (1), characterized in that: The left and right sides of the secondary power source (1) are fixedly connected with heat dissipation mechanisms (4), the four corners of the secondary power source (1) are provided with protection mechanisms (5), and the top of the secondary power source (1) is fixedly installed with a closed top cover (6); The heat dissipation mechanism (4) comprises a heat dissipation box (41), two heat dissipation boxes (41) are respectively fixedly connected to the left and right sides of the secondary power source (1), three conduction grooves (42) are provided on the side of the heat dissipation box (41) close to the secondary power source (1), the top of the heat dissipation box (41) is fixedly connected to an air inlet cylinder (43), the inner surface of the air inlet cylinder (43) is fixedly connected to a dustproof net (44) on the side away from the secondary power source (1), and the bottom of the air inlet cylinder (43) is fixedly connected to a dustproof net (44). An air duct (45) is fixedly connected, the bottom of the air duct (45) penetrates into the interior of the heat dissipation box (41), the outer surface of the air duct (45) is fixedly connected with a plurality of heat-absorbing copper sheets (46), the outer surface of the heat-absorbing copper sheet (46) is fixedly connected to the inner surface of the heat dissipation box (41), the interior of the heat-absorbing copper sheet (46) is provided with three flow grooves (47) penetrating from front to back, and a flow guide mechanism (48) is fixedly connected to the middle of the bottom end of the air duct (45); The protection mechanism (5) comprises a buffer baffle (51), the buffer baffle (51) is arranged on the outer surface of the secondary power supply (1), and the inner surface of the buffer baffle (51) is provided with a tightening column (52) on both upper and lower sides, and the four corners inside the secondary power supply (1) are provided with a sliding groove (1), and the end of the tightening column (52) away from the buffer baffle (51) penetrates into the interior of the sliding groove (1) and is fixedly connected with a sliding top plate (53), the outer surface of the sliding top plate (53) is slidably connected to the inner surface of the sliding groove (1), and the opposite surfaces of the two sliding top plates (53) are fixedly connected with a spring (1) (54), and the end of the sliding top plate (53) away from the tightening column (52) is fixedly connected with a spring (2) (55), and the end of the spring (2) (55) away from the sliding top plate (53) is fixedly connected to the inner wall of the sliding groove (1).

2. A secondary power source with high conversion efficiency for satellite according to claim 1, characterized in that: The air guide mechanism (48) comprises a connecting tube (481), the connecting tube (481) being fixedly connected to the middle of the bottom end of the air guide tube (45) and being in electrical communication with the air guide tube (45), and a motor (482) being fixedly connected to the side of the connecting tube (481) away from the secondary power source (1).

3. A secondary power source with high conversion efficiency for satellite according to claim 2, characterized in that: The output shaft of the motor (482) passes through the interior of the connecting tube (481) and is fixedly connected to a guide fan (483); one end of the guide fan (483) close to the secondary power supply (1) passes through the interior of the middle conducting groove (42) and is fixedly connected to a guide fan (484).

4. The high conversion efficiency secondary power supply for satellite according to claim 1, characterized in that: One end of the tightening column (52) close to the buffer baffle (51) is fixedly connected to a connecting slide plate (56); both left and right sides of the outer surface of the connecting slide plate (56) are fixedly connected to limiting slide plates (57); both upper and lower sides of the inner surface of the buffer baffle (51) are provided with connecting slide grooves (58); the connecting slide plate (56) is slidably connected inside the connecting slide grooves (58).

5. A secondary power source with high conversion efficiency for satellite according to claim 4, characterized in that: The inner surface of the connecting slide groove (58) is provided with a limit slide groove (59) on both sides, and the limit slide plate (57) is slidably connected inside the limit slide groove (59). The front and rear ends of the connecting slide plate (56) are fixedly connected with spring three (510), and the end of the spring three (510) away from the connecting slide plate (56) is fixedly connected to the inner wall of the connecting slide groove (58).

6. The secondary power supply with high conversion efficiency for satellite according to claim 1, characterized in that: The closed top cover (6) comprises a closed cover plate (61), the closed cover plate (61) being arranged on the top of the secondary power source (1), two rotating pressure plates (62) being rotatably connected to the left and right sides of the top of the closed cover plate (61), and a pressure block (63) being fixedly connected to the bottom of the rotating pressure plate (62) on one side close to the secondary power source (1).

7. A secondary power source with high conversion efficiency for satellite according to claim 6, characterized in that: The bottom end of the pressing block (63) passes through the bottom of the closing cover (61) and is movably connected to pull rods (64) on both the front and rear sides. One end of the two pull rods (64) away from the pressing block (63) is movably connected to a sliding baffle (65). The bottom of the closing cover (61) is provided with sliding grooves 2 on both the left and right sides, and the sliding baffle (65) is slidably connected inside the sliding grooves 2.

8. The secondary power supply with high conversion efficiency for satellite according to claim 7, characterized in that: A spring four (66) is fixedly connected to the side of the sliding baffle (65) away from the secondary power supply (1); one end of the spring four (66) away from the sliding baffle (65) is fixedly connected to the inner wall of the sliding slot two; plug-in slots are provided on both the left and right sides of the top of the secondary power supply (1); a positioning plug post (67) is fixedly connected to the side of the sliding baffle (65) close to the secondary power supply (1); one end of the positioning plug post (67) away from the sliding baffle (65) penetrates into the interior of the plug-in slot.

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