Emergency power supply system for small-weight and high-power helicopter

Abstract

The utility model belongs to the technical field of power supply system design, and discloses a light-weight high-power helicopter emergency power supply system, which comprises two storage battery packs, a mounting bracket, a front ventilation pipe, a rear ventilation pipe, an anode cable and a cathode cable, the two storage battery packs are fixed above the mounting bracket through screws; one end of the front ventilation pipe is connected with the storage battery pack, and the other end is connected with the machine body skin and used for discharging waste gas generated in the charging process of the storage battery pack out of the machine; one end of the rear ventilation pipe is connected with the storage battery pack, and the other end is connected with the machine body skin and used for discharging waste gas generated in the charging process of the storage battery pack out of the machine; one end of the anode cable is connected with the storage battery pack plug, and the other end is connected to the onboard bus bar; and one end of the cathode cable is connected with the storage battery pack plug, and the other end is connected to the onboard bus bar.

Description

Technical Field

[0001] The utility model belongs to the technical field of power system design, and particularly relates to a small-weight and high-power helicopter emergency power supply system. Background Art

[0002] The helicopter emergency power supply system mainly consists of a battery pack, battery pack accessories (bracket, ventilation pipe) and connecting cables, and is used to supply power to some important electrical equipment and start the engine in the absence of ground power. The existing helicopter emergency power supply system mainly consists of one battery pack or two parallel-connected battery packs.

[0003] In the form of one battery pack, during the engine starting period, due to the large starting current, on the one hand, the output voltage is low and the electrical equipment cannot work properly, and on the other hand, it is difficult to further increase the starting current, making it difficult to meet the starting requirements when the starting torque requirement of the engine is relatively high.

[0004] In the form of two parallel-connected battery packs, since the two battery packs are installed in different positions, 2 sets of battery pack accessories and connecting cables are required, resulting in a relatively heavy weight. Content of the Utility Model

[0005] Purpose of the utility model: To provide a small-weight and high-power helicopter emergency power supply system, in which two battery packs are installed using an integrated bracket, the ventilation pipes are connected together by welding, and the connecting cables of the two battery packs are paralleled and supplied power outward through nearby terminal posts. On the one hand, the output power of the battery pack can be increased, and on the other hand, the weight can be reduced.

[0006] Technical Solution:

[0007] A small-weight and high-power helicopter emergency power supply system includes: two battery packs, an installation bracket, a front ventilation pipe, a rear ventilation pipe, a positive cable, and a negative cable;

[0008] The two battery packs are fixed above the installation bracket by screws;

[0009] One end of the front ventilation pipe is connected to the battery pack, and the other end is connected to the airframe skin, for discharging the waste gas generated during the charging process of the battery pack outside the aircraft; one end of the rear ventilation pipe is connected to the battery pack, and the other end is connected to the airframe skin, for discharging the waste gas generated during the charging process of the battery pack outside the aircraft;

[0010] One end of the positive cable is connected to the battery pack plug, and the other end is connected to the on-board busbar;

[0011] One end of the negative cable is connected to the battery pack plug, and the other end is connected to the on-board busbar.

[0012] Further, the overall structures of the front ventilation pipe and the rear ventilation pipe are both Y-shaped;

[0013] The two interfaces at the upper end of the Y shape are respectively connected to the ventilation nozzles of the two battery packs through clamps, and the lower end is connected to the airframe skin.

[0014] Further, the number of the positive cables is two; one ends of the two positive cables are respectively connected to the positive plugs of the battery packs, and the other ends are connected to the positive terminal posts. The positive terminal posts are connected to the bus bar through jumper cables.

[0015] Further, the number of the negative cables is two; one ends of the two negative cables are respectively connected to the negative plugs of the battery packs, and the other ends are connected to the negative terminal posts. The negative terminal posts are connected to the auxiliary negative terminal posts through fuses, and the auxiliary negative terminal posts are connected to the bus bar through cables.

[0016] Further, the positive terminal post includes: a bolt, a nut, a male washer and a female washer;

[0017] The root of the bolt is sleeved with the female washer and the male washer respectively. Above the male washer, two positive cables and a jumper cable are sequentially sleeved. The nut is screwed on the bolt and is located outside the jumper cable to press the cables and the washers tightly.

[0018] Further, the negative terminal post includes: a bolt, a nut, a male washer and a female washer;

[0019] The root of the bolt is sleeved with the female washer and the male washer respectively. Above the male washer, two negative cables and a fuse are sequentially sleeved. The nut is screwed on the bolt and is located outside the fuse to press the fuse, the cables and the washers tightly.

[0020] Advantageous Effects

[0021] The present invention provides a small-weight and high-power helicopter emergency power supply system, which provides a large output power. It can not only meet the large starting power requirements of the engine, but also maintain a high output voltage during engine starting and ensure the normal operation of electrical equipment. In addition, the two battery packs adopt an integrated installation method, which can reduce the weight. Description of the Drawings

[0022] Figure 1 It is a general installation schematic diagram of a small-weight and high-power helicopter emergency power supply system;

[0023] Figure 2 It is an installation schematic diagram of the bracket;

[0024] Figure 3 It is an installation schematic diagram of the ventilation pipe;

[0025] Figure 4 It is an installation schematic diagram of the positive cable;

[0026] Figure 5 Schematic diagram for installation of negative cable

[0027] Figure 6 Schematic diagram for installation of positive parallel terminal

[0028] Figure 7 Schematic diagram for installation of negative parallel terminal Detailed implementation mode

[0029] The present invention will be further described below with reference to the accompanying drawings:

[0030] A small-weight high-power helicopter emergency power supply system mainly consists of two battery packs 1, one mounting bracket 4, one front ventilation pipe 2, one rear ventilation pipe 3, two positive battery cables 51, 52, one positive adapter cable 6, two negative battery cables 71, 72, one positive parallel terminal 8, one fuse 9, and one negative parallel terminal 10. The overall schematic diagram is shown in Figure 1 .

[0031] The battery pack 11 is fixed to the right side of the mounting bracket 4 by three screws 41, and the battery pack 12 is fixed to the left side of the mounting bracket 4 by three screws 41. A certain gap is left in the middle of the mounting bracket 4 to ensure that the two battery packs can be smoothly installed on the bracket 4. The schematic diagram of the bracket installation is shown in Figure 2 .

[0032] The front ventilation pipe 21 is connected to the ventilation nozzle of the battery pack 12 through a clamp, and the front ventilation pipe 22 is connected to the ventilation nozzle of the battery pack 11 through a clamp. The front ventilation pipes 21 and 22 are connected together by welding to form the front ventilation pipe 2. The front ventilation opening 23 is connected to the airframe skin to realize the air circulation between the battery pack and the outside of the aircraft, and discharge the waste gas generated during the charging process of the battery pack 1 outside the aircraft. The rear ventilation pipe 31 is connected to the ventilation nozzle of the battery pack 12 through a clamp, and the rear ventilation pipe 32 is connected to the ventilation nozzle of the battery pack 11 through a clamp. The rear ventilation pipes 31 and 32 are connected together by welding to form the rear ventilation pipe 3. The rear ventilation opening 33 is connected to the airframe skin to realize the air circulation between the battery pack and the outside of the aircraft, and discharge the waste gas generated during the charging process of the battery pack 1 outside the aircraft. The schematic diagram of the ventilation pipe installation is shown in Figure 3 .

[0033] The positive cable 51 is connected to the plug of the battery pack 11, and the positive cable 52 is connected to the plug of the battery pack 12. The two battery packs are paralleled by fixing with the adapter cable 6 through the positive terminal 8. The adapter cable 6 is connected to the bus bar to supply power to the electrical equipment of the helicopter. The schematic diagram of the positive cable installation is shown in Figure 4 .

[0034] The negative cable 71 is plugged into the battery pack 11, and the negative cable 72 is plugged into the battery pack 12. It is fixed to the fuse 9 through the negative terminal 10 to achieve the parallel connection of the two battery packs. See the installation schematic diagram of the negative cable in Figure 5 .

[0035] The positive parallel terminal 8 consists of the mounting bolt 81, the male washer 83, the female washer 82 and the nut 84. The male washer 83 and the female washer 82 are sleeved on the mounting bolt 81 to prevent the positive cable and the adapter cable connector from connecting to the body and forming a short circuit. The positive cable 51, the positive cable 52 and the adapter cable 6 are sleeved on the mounting bolt 81 through the terminal, and the cable is fixed to the terminal through the nut 84. See the installation schematic diagram of the terminal in Figure 6 .

[0036] The negative parallel terminal 10 consists of the mounting bolt 101, the male washer 103, the female washer 1022 and the nut 104. The male washer 103 and the female washer 102 are sleeved on the mounting bolt 101 to prevent the negative cable connector from connecting to the body. The negative cable 71 and the negative cable 72 are sleeved on the mounting bolt 81 through the terminal, and the cable is fixed to the terminal through the nut 104 with the fuse 9. See the installation schematic diagram of the terminal in Figure 7 .

Claims

1. An emergency power supply system for a small-weight high-power helicopter, characterized in that: The system includes: two battery packs, a mounting bracket, a front ventilation pipe, a rear ventilation pipe, a positive cable, and a negative cable; The two battery packs are fixed above the mounting bracket by screws; One end of the front ventilation pipe is connected to the battery pack, and the other end is connected to the airframe skin, which is used to discharge the waste gas generated during the charging process of the battery pack outside the aircraft; One end of the rear ventilation pipe is connected to the battery pack, and the other end is connected to the airframe skin, which is used to discharge the waste gas generated during the charging process of the battery pack outside the aircraft; One end of the positive cable is connected to the battery pack plug, and the other end is connected to the on-board busbar; One end of the negative cable is connected to the battery pack plug, and the other end is connected to the on-board busbar.

2. The system according to claim 1, wherein: The overall structures of the front ventilation pipe and the rear ventilation pipe are both Y-shaped; The two upper interfaces of the Y shape are respectively connected to the ventilation nozzles of the two battery packs through clamps, and the lower end is connected to the airframe skin.

3. The system according to claim 2, wherein: The number of the positive cables is two; One end of each of the two positive cables is respectively connected to the positive plugs of the battery packs, and the other end is connected to the positive terminal. The positive terminal is connected to the busbar through a jumper cable.

4. The system according to claim 3, wherein: The number of the negative cables is two; One end of each of the two negative cables is respectively connected to the negative plugs of the battery packs, and the other end is connected to the negative terminal. The negative terminal is connected to the auxiliary negative terminal through a fuse, and the auxiliary negative terminal is connected to the busbar through a cable.

5. The system according to claim 4, characterized in that: The positive terminal includes: a bolt, a nut, a male washer, and a female washer; The root of the bolt is respectively sleeved with the female washer and the male washer. Above the male washer, two positive cables and a jumper cable are sequentially sleeved. The nut is screwed onto the bolt and is located outside the jumper cable to press the cables and washers tightly.

6. The system according to claim 5, wherein: The negative terminal includes: a bolt, a nut, a male washer, and a female washer; The root of the bolt is respectively sleeved with the female washer and the male washer. Above the male washer, two negative cables and a fuse are sequentially sleeved. The nut is screwed onto the bolt and is located outside the fuse to press the fuse, cables, and washers tightly.

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