Battery pack structure of underwater vehicle

Abstract

The utility model relates to the technical field of batteries, in particular to a battery pack structure of an underwater vehicle, which comprises at least one fixed battery pack and at least one movable battery pack, each of the fixed battery pack and the movable battery pack comprises a plurality of battery cells, and the plurality of battery cells are fixed through two side plates. A plurality of clamping plates are arranged in the fixed battery pack and the movable battery pack at intervals, the two side plates and the multiple clamping plates are fixedly connected through braces, the multiple battery packs are connected in series and in parallel to supply power to the glider, so that the contact surface between the battery packs and the outside is enlarged, heat dissipation is accelerated, and in order to adapt to the gravity center of an aircraft under water, the battery packs are connected in series and in parallel to supply power to the glider. At least one fixed battery pack and at least one movable battery pack are arranged to adapt to the working conditions of the underwater vehicle at different depths, the transverse position of the gravity center of the underwater vehicle is changed through the movable battery packs, the underwater vehicle generates a roll angle, and course adjustment can be achieved under the effect of an empennage of the underwater vehicle.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery pack structure of an underwater vehicle. Background Art

[0002] As batteries are used more and more commonly as power sources and their application scenarios become more and more popular, the market urgently needs batteries with convenient installation and connectivity. Batteries that are easy to install and connect can be easily introduced into the power market for various products. Currently, lithium-ion battery packs have been widely used in the field of underwater gliders. Due to the limitations of the glider's working environment, gliders are generally small in size and have poor overall endurance.

[0003] In order to increase the endurance of underwater vehicles, the volume of the battery pack is generally increased to increase the capacity of the battery pack, and a heat dissipation structure is used to dissipate heat from the battery pack to prevent the battery pack from overheating. For example, Chinese patent publication No. CN220138539U discloses "an underwater vehicle battery compartment and an underwater vehicle", which provides a liquid storage tank on the inner wall of the battery compartment shell, and the liquid outlet and the liquid return port of the liquid storage tank are respectively connected to the heat exchange component to form a circulation loop of the coolant. The liquid storage tank is provided on the inner wall of the battery compartment shell. Due to the seawater environment outside the battery compartment shell, the coolant can be cooled, thereby realizing the circulation heat dissipation of the battery component, and improving the heat dissipation efficiency;

[0004] However, in actual use, the heat dissipation efficiency of a single large battery pack is low, the installation of a liquid storage tank and a heat exchange component increases the weight of the underwater vehicle, and when the battery pack is damaged, it is difficult to bring the vehicle back to the surface. Utility Model Content

[0005] The utility model aims to solve the shortcomings of the prior art, such as low heat dissipation efficiency of large-volume battery packs, increased weight of the underwater vehicle by providing a liquid storage tank and a heat exchange component, and proposes a battery pack structure for an underwater vehicle.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A battery pack structure for an underwater vehicle is designed, comprising at least one fixed battery pack and at least one mobile battery pack, wherein the mobile battery pack can move relative to the fixed battery pack, and the fixed battery pack and the mobile battery pack are electrically connected via parallel wiring;

[0008] The fixed battery pack and the mobile battery pack both include a plurality of battery cells, and the plurality of battery cells are fixed by two side plates, the two side plates are respectively arranged on both sides of the fixed battery pack or the mobile battery pack, and the two side plates are fastened and connected by a fixing structure.

[0009] Furthermore, a plurality of clamping plates are arranged at intervals in the fixed battery pack and the mobile battery pack, and mounting holes matching the battery cells are provided on the clamping plates. The two side plates and the plurality of clamping plates are fastened and connected by tie rods.

[0010] Furthermore, the pull rod is provided with a plurality of slot holes at intervals, the clamping plate is provided with threaded holes matching with the slot holes, the slot holes are fastened with the threaded holes by bolts, and the slot holes are all provided with recessed grooves.

[0011] Furthermore, the fixing structure includes a pull rod, which passes through the two side plates and the plurality of clamping plates and is threadedly connected with a nut.

[0012] Furthermore, a buffer structure is provided on one side of the mobile battery pack, the pull rod passes through the buffer structure, and the nut abuts against the buffer structure.

[0013] Furthermore, the buffer structure includes a buffer pad arranged on one side of the mobile battery pack, and the buffer pad is provided with an elastic protrusion.

[0014] Furthermore, the buffer structure also includes a fixing plate arranged on one side of the buffer pad, the pull rod passes through the buffer pad and the fixing plate, and the nut abuts against the fixing plate.

[0015] Furthermore, a through slot matching with the elastic protrusion is formed on the fixing plate, and the elastic protrusion passes through the through slot and extends to one side of the fixing plate.

[0016] Furthermore, the fixed battery pack and the mobile battery pack are both provided with protection plates, the parallel connection line is arranged between the two protection plates, and an output line is arranged on the protection plate of one of the fixed battery packs.

[0017] Furthermore, the battery cells are connected in parallel via diodes, and the buffer pads and elastic protrusions are both rubber parts.

[0018] The utility model provides a battery pack structure for an underwater vehicle, which has the following beneficial effects:

[0019] In the present invention, by providing at least one fixed battery pack and at least one mobile battery pack, multiple battery packs are connected in series and parallel to supply power to the glider, so as to increase the contact surface between the battery pack and the outside world and accelerate the heat dissipation effect of the battery pack during operation;

[0020] Secondly, in the present invention, in order to adapt to the center of gravity of the vehicle underwater, at least one fixed battery pack and at least one mobile battery pack are provided to adapt to the working conditions of the vehicle at different depths. The lateral position of the center of gravity of the underwater vehicle is changed by the mobile battery pack so that the underwater vehicle generates a roll angle, and the heading adjustment can be achieved under the action of the tail wing of the underwater vehicle. A buffer device is provided on one side of the mobile battery pack to prevent the mobile battery pack from colliding with the fixed battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of a battery pack structure of an underwater vehicle proposed by the utility model;

[0022] Figure 2 It is a structural schematic diagram of the partition of the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the fixed battery pack of the utility model;

[0024] Figure 4 It is a structural schematic diagram of the mobile battery pack of the utility model.

[0025] In the figure: 1. Fixed battery pack; 11. Mobile battery pack; 2. Parallel connection; 3. Battery cell; 4. Side panel; 5. Fixed structure; 51. Pull rod; 52. Nut; 6. Clamp; 61. Mounting hole; 7. Pull bar; 71. Slot hole; 72. Recessed groove; 8. Buffer structure; 81. Buffer pad; 82. Elastic protrusion; 83. Fixed plate; 9. Protective plate; 91. Output line. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0027] Reference Figure 1-4 A battery pack structure of an underwater vehicle includes at least one fixed battery pack 1 and at least one mobile battery pack 11. The mobile battery pack 11 can move relative to the fixed battery pack 1. The fixed battery pack 1 and the mobile battery pack 11 are electrically connected through a parallel connection line 2. The parallel connection line 2 is a flexible conductive material. The connection position needs to be passivated to avoid sharp corners.

[0028] The fixed battery pack 1 and the mobile battery pack 11 both include a plurality of battery cells 3 , and the plurality of battery cells 3 are fixed by two side panels 4 , the two side panels 4 are respectively arranged on both sides of the fixed battery pack 1 or the mobile battery pack 11 , and the two side panels 4 are fastened together by a fixing structure 5 .

[0029] In the present invention, by setting at least one fixed battery pack 1 and at least one mobile battery pack 11, multiple battery packs are connected in series and parallel to supply power to the glider, so as to increase the contact surface between the battery pack and the outside world and accelerate the heat dissipation effect of the battery pack during operation. The series and parallel connection of multiple battery packs can increase the capacity of the battery pack, reduce the current of a single string of battery packs, and reduce the Joule heat of a single battery cell, so that the heat generation of a single battery pack during discharge is reduced, and the battery can release more electricity. The characteristics of the battery cell: the battery cell can release more electricity under suitable temperature and small current, and the mobile battery pack 11 is used to replace the counterweight. The fixed battery pack 1 is fixed in the glider. Since the glider needs In order to work at different depths underwater, it is necessary to adjust the position of the counterweight in the aircraft to change the center of gravity of the glider, so as to adapt to the working conditions of the glider at different depths. The counterweight in the present invention is a mobile battery pack 11. The mobile battery pack 11 changes its position in the glider through the slide rail, thereby changing the center of gravity of the glider to meet the center of gravity required by the glider at different depths. When a battery pack is damaged, the glider can still work normally. Among the multiple fixed battery packs 1, one fixed battery pack 1 is used as a backup battery. By switching the electronic control system, when the main battery is insufficient, the backup battery can be used to allow the glider to smoothly return to the water surface, thereby ensuring the safe use of electricity for the equipment.

[0030] Furthermore, in this embodiment, multiple clamping plates 6 are arranged at intervals in the fixed battery pack 1 and the mobile battery pack 11, and the clamping plates 6 are provided with mounting holes 61 matching the battery cells 3. The two side panels 4 and the multiple clamping plates 6 are fastened together by pull rods 7.

[0031] In this embodiment, a plurality of slots 71 are provided at intervals on the pull rod 7, and a threaded hole matching the slot 71 is provided on the clamp plate 6. The slot 71 is fastened to the threaded hole by bolts. The clamp plate 6, the pull rod 7 and the fixing structure 5 are used to fix the battery cells 3 into a group to prevent the battery cells 3 from shaking during use. The slots 71 are each provided with a recessed groove 72 to facilitate the installation of bolts.

[0032] Furthermore, in the present embodiment, the fixing structure 5 includes a pull rod 51, which passes through the two side plates 4 and a plurality of clamping plates 6 and is threadedly connected with a nut 52. The pull rod 51 cooperates with the nut 52 to respectively abut the two side plates 4 against the two ends of the battery cell 3 to prevent the battery cell 3 from shaking and colliding and being damaged during use.

[0033] In this embodiment, a buffer structure 8 is provided on one side of the mobile battery pack 11, the pull rod 51 passes through the buffer structure 8, and the nut 52 abuts against the buffer structure 8 to prevent the battery packs from colliding with each other and causing structural damage.

[0034] In this embodiment, the buffer structure 8 includes a buffer pad 81 arranged on one side of the mobile battery pack 11. The buffer pad 81 is provided with an elastic protrusion 82. When the battery packs collide with each other, the elastic protrusion 82 undergoes elastic deformation to absorb the impact and reduce the impact on the battery pack.

[0035] It should be noted that, in this embodiment, the buffer structure 8 also includes a fixing plate 83 arranged on one side of the buffer pad 81, the pull rod 51 passes through the buffer pad 81 and the fixing plate 83, and the nut 52 abuts against the fixing plate 83. The buffer pad 81 is fixed by setting the fixing plate 83 and cooperating with the nut 52 to prevent it from elastically deforming and separating and misaligning with the nut 52 and falling off.

[0036] In this embodiment, the area of ​​the fixing plate 83 is the same as that of the buffer pad 81 and is provided with a through groove that matches the elastic protrusion 82. The elastic protrusion 82 passes through the through groove and extends to one side of the fixing plate 83 to fix the buffer pad 81 and the elastic protrusion 82 to prevent the buffer pad 81 from deforming when the elastic protrusion 82 is subjected to force, causing the elastic protrusion 82 to tilt and fail to play a buffering role.

[0037] In this embodiment, a protection plate 9 is provided on both the fixed battery pack 1 and the mobile battery pack 11, and a connecting line 2 is provided between the two protection plates 9 so that the protection plates 9 are connected in series with each other. An output line 91 is provided on the protection plate 9 of one of the fixed battery packs 1, and the protection plate 9 is provided to prevent the battery pack from being overcharged and damaged.

[0038] In more detail, in this embodiment, the battery cells 3 are connected in parallel through diodes to prevent the battery pack from short-circuiting and reverse charging of the battery cells 3 during operation. The welding point positions need to be passivated by means of heat shrink tubing, structural adhesive, etc. to prevent sharp corners from scratching the battery cells 3. The buffer pads 81 and the elastic protrusions 82 are both rubber parts.

[0039] Working mode: When working, multiple battery packs are connected in series and parallel to supply power to the glider, so as to increase the contact area between the battery pack and the outside world and accelerate the heat dissipation effect of the battery pack during operation. By moving the battery pack 11 instead of the counterweight, the lateral position of the center of gravity of the underwater vehicle is changed, so that the underwater vehicle generates a roll angle, and the heading adjustment can be achieved under the action of the tail wing of the underwater vehicle. When a battery pack is damaged, the glider can still work normally. Among the multiple fixed battery packs 1, one fixed battery pack 1 is used as a backup battery. By switching the electronic control system, when the main battery is insufficient, the backup battery can be used to allow the glider to smoothly return to the water surface, thereby ensuring the safe use of electricity for the equipment. When the battery packs collide with each other, the elastic protrusion 82 undergoes elastic deformation to absorb the impact and reduce the impact on the battery pack. The splint 6, the pull rod 7 and the fixed structure 5 are used to fix the battery cells 3 into groups to prevent the battery cells 3 from shaking during use.

[0040] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A battery pack structure for an underwater vehicle, comprising at least one fixed battery pack (1) and at least one mobile battery pack (11), characterized in that: The mobile battery pack (11) is movable relative to the fixed battery pack (1), and the fixed battery pack (1) and the mobile battery pack (11) are electrically connected via a parallel connection line (2); The fixed battery pack (1) and the mobile battery pack (11) both comprise a plurality of battery cells (3), and the plurality of battery cells (3) are fixed by means of two side panels (4), the two side panels (4) being respectively arranged on two sides of the fixed battery pack (1) or the mobile battery pack (11), and the two side panels (4) being fastened and connected by means of a fixing structure (5).

2. The battery pack structure of an underwater vehicle according to claim 1, characterized in that: A plurality of clamping plates (6) are arranged at intervals in the fixed battery pack (1) and the mobile battery pack (11); the clamping plates (6) are provided with mounting holes (61) matching the battery cells (3); and the two side plates (4) and the plurality of clamping plates (6) are fastened together by a tie rod (7).

3. The battery pack structure of an underwater vehicle according to claim 2, characterized in that: The pull rod (7) is provided with a plurality of slotted holes (71) at intervals, the clamping plate (6) is provided with threaded holes matching the slotted holes (71), the slotted holes (71) are fastened to the threaded holes by bolts, and the slotted holes (71) are all provided with recessed grooves (72).

4. The battery pack structure of an underwater vehicle according to claim 2, characterized in that: The fixing structure (5) comprises a pull rod (51), wherein the pull rod (51) passes through the two side plates (4) and the plurality of clamping plates (6) and is threadedly connected with a nut (52).

5. The battery pack structure of an underwater vehicle according to claim 4, characterized in that: A buffer structure (8) is provided on one side of the mobile battery pack (11), the pull rod (51) passes through the buffer structure (8), and the nut (52) abuts against the buffer structure (8).

6. The battery pack structure of an underwater vehicle according to claim 5, characterized in that: The buffer structure (8) comprises a buffer pad (81) arranged on one side of the mobile battery pack (11), and an elastic protrusion (82) is provided on the buffer pad (81).

7. The battery pack structure of an underwater vehicle according to claim 6, characterized in that: The buffer structure (8) further comprises a fixing plate (83) arranged on one side of the buffer pad (81), the pull rod (51) passes through the buffer pad (81) and the fixing plate (83), and the nut (52) abuts against the fixing plate (83).

8. The battery pack structure of an underwater vehicle according to claim 7, characterized in that: The fixing plate (83) is provided with a through slot that matches the elastic protrusion (82); the elastic protrusion (82) passes through the through slot and extends to one side of the fixing plate (83).

9. The battery pack structure of an underwater vehicle according to claim 1, characterized in that: The fixed battery pack (1) and the mobile battery pack (11) are both provided with a protection plate (9), the parallel connection line (2) is provided between the two protection plates (9), and an output line (91) is provided on the protection plate (9) of one of the fixed battery packs (1).

10. The battery pack structure of an underwater vehicle according to claim 6, characterized in that: The battery cells (3) are connected in parallel via diodes, and the buffer pad (81) and the elastic protrusion (82) are both rubber parts.

Images