Sealed and safe lithium ion battery for unmanned ship

Abstract

The invention relates to the technical field of batteries, in particular to a sealed and safe lithium ion battery for an unmanned ship, the sealed and safe lithium ion battery comprises a lithium ion battery cell and a sealed shell arranged outside the lithium ion battery cell in a wrapping mode, an interlayer cavity is formed in the sealed shell, and a control seat body is integrally and fixedly arranged on the surface of the sealed shell; a driving cavity and a traction detection cavity are formed in the control seat body, and the sectional area of the driving cavity is equal to that of the traction detection cavity; according to the sealed and safe lithium ion battery for the unmanned ship, through cooperation of the active cavity, the traction detection cavity, the pumping structure and the like, a water source outside the ship can be extracted to dissipate heat of the battery, and real-time detection of the sealing performance of the battery can be realized in the process of extracting the water source to dissipate heat.

Description

Technical Field

[0001] The invention relates to the technical field of batteries, and in particular to a sealed and safe lithium-ion battery for unmanned ships. Background Art

[0002] Lithium-ion batteries are a type of secondary battery that relies primarily on the movement of lithium ions between the positive and negative electrodes to work. When lithium-ion batteries are charged and discharged at high power, they will emit a certain amount of heat. The heat accumulation and high temperature will accelerate the chemical reactions inside the battery and the volatilization of the electrolyte, resulting in a shortened battery life and a significant increase in the probability of thermal runaway or even fire. When unmanned boats are powered by lithium-ion batteries, in order to reduce heat dissipation costs, river water is pumped through water pumps to cool the batteries. The cooling water flows along the inner cavity of the battery shell, taking away the heat from the battery. However, if the shell is damaged during the cooling process, it is difficult to detect in time, which can easily lead to greater failure problems. Summary of the invention

[0003] The object of the present invention is to provide a sealed and safe lithium-ion battery for unmanned ships to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solutions: A sealed and safe lithium-ion battery for unmanned ships, comprising a lithium-ion battery cell and a sealed shell wrapped and arranged outside the lithium-ion battery cell, wherein an interlayer cavity is provided inside the sealed shell, a control seat body is integrally fixedly provided on the surface of the sealed shell, an active cavity and a traction detection cavity are provided in the control seat body, the cross-sectional areas of the active cavity and the traction detection cavity are equal, the active cavity and the traction detection cavity are communicated with the interlayer cavity respectively, a secondary piston is provided in the traction detection cavity, the secondary piston is in sealing contact with the inner wall surface of the traction detection cavity, a reset spring is connected to one side of the secondary piston, the reset spring applies elastic tension to the secondary piston, a first distance sensor is embedded and installed inside the control seat body, the first distance sensor is used to detect the position of the secondary piston, a pumping structure with a position detection function is provided inside and outside the active cavity, a micro solenoid valve is provided outside the interlayer cavity, and when the pumping structure extracts liquid in the interlayer cavity, the micro solenoid valve is controlled to be closed.

[0005] The pumping structure includes a limit ring, a one-way liquid valve, a limit end cavity and a separation groove. The limit ring is arranged inside the active cavity. The one-way liquid valve is embedded and fixed in the limit ring. The one-way liquid valve allows the liquid in the interlayer cavity to flow unidirectionally toward the active cavity. The end of the active cavity is connected to form a limit end cavity, and a separation groove is provided inside the control seat body.

[0006] A primary piston is arranged in the active cavity, the primary piston is in sealing contact with the inner wall surface of the active cavity, a piston cavity is opened in the primary piston, an annular eave is arranged on the side of the piston cavity close to the one-way liquid valve, and a liquid hole is opened through the surface of the side of the piston cavity away from the one-way liquid valve.

[0007] A dynamic inner disk is arranged in the piston cavity, and a liquid groove is opened at the edge of the dynamic inner disk. A compression spring is arranged on the side of the dynamic inner disk away from the annular eaves. The compression spring applies elastic pressure to the dynamic inner disk so that the dynamic inner disk and the annular eaves are sealed and fitted. A synchronous connecting rod is fixedly arranged on the first-stage piston, and one end of the synchronous connecting rod is sealed and inserted through the end wall of the limiting end cavity and extends into the separating slide groove.

[0008] A slider body is provided in the sliding limit in the separating slide groove, and the slider body is fixedly installed with the synchronous connecting rod. An embedding blind hole is provided on the upper surface of the slider body, and a synchronous pin is inserted in the embedding blind hole. A driving main rod is fixedly provided on the upper part of the synchronous pin, and the movement of the driving main rod drives the slider body and the synchronous connecting rod to move.

[0009] A second distance sensor is embedded and installed on the inner wall surface of the separating slide groove, and the second distance sensor is used to detect the position of the slider body. A drainage cavity is opened inside the control seat body, and a threaded docking hole is opened on the surface of the control seat body. The limit end cavity is connected with the threaded docking hole through the drainage cavity.

[0010] A rotary-vibrating inner shaft is inserted inside the synchronous connecting rod, and the rotary-vibrating inner shaft is coaxially arranged with the synchronous connecting rod, and the rotary-vibrating inner shaft and the synchronous connecting rod are in sealed contact, and a corrugated rack is opened inside the dividing slide groove, and the corrugated rack is arranged in parallel along the length direction of the dividing slide groove.

[0011] A rotary vibration pick is fixedly provided at the end of the rotary vibration inner shaft, an L-shaped support plate is fixedly provided on the surface of the slider body, and a pick frame shrapnel is fixedly provided on the L-shaped support plate. The pick frame shrapnel applies elastic pressure to the rotary vibration pick so that the rotary vibration pick contacts the corrugated rack. When the slider body drives the rotary vibration pick to move along the length direction of the separating slide groove, the rotary vibration inner shaft can be driven to reciprocate and rotate and vibrate through the cooperation of the corrugated rack and the pick frame shrapnel.

[0012] A matching transverse ridge is fixedly provided at one end of the rotary-vibrating inner shaft located inside the piston cavity, and a matching tooth groove is opened at the center position of the surface of the dynamic inner disk; when the dynamic inner disk contacts the annular eaves, the matching transverse ridge and the matching tooth groove are separated from each other; when the dynamic inner disk is pushed open by water pressure and separated from the annular eaves, the matching transverse ridge will be inserted into the matching tooth groove, and the matching tooth groove will be driven to rotate by the rotation of the matching transverse ridge.

[0013] A stabilizing connecting rod is fixedly arranged inside the interlayer cavity, a mutual inner hole is opened inside the control seat body, and the active cavity and the traction detection cavity are respectively connected with the interlayer cavity through the corresponding mutual inner holes.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The sealed and safe lithium-ion battery for the unmanned ship of the present invention can draw water from outside the ship to dissipate heat for the battery through the cooperation of the active cavity, the traction detection cavity and the pumping structure, and can realize real-time detection of the sealing of the battery during the process of drawing water to dissipate heat. When the sealed shell is damaged and the interlayer cavity leaks, it can be detected in the first time, thereby controlling the unmanned ship to return for maintenance.

[0015] The present invention cooperates with structures such as the corrugated rack, the rotary vibration pick frame and the rotary vibration inner shaft, so that the matching transverse edges and the matching tooth grooves can be separated during the process of the first-stage piston extracting water flow, thereby ensuring the contact seal between the dynamic inner disk and the annular eaves. During the process of the first-stage piston draining water, the matching transverse edges and the matching tooth grooves are meshed, thereby driving the dynamic inner disk to rotate and vibrate, so that the accumulation of attachments in front of the liquid tank is reduced during the process of liquid flowing through the liquid tank, thereby reducing the probability of the dynamic inner disk and the annular eaves being mixed with attachments when they contact and close next time, resulting in a loose closure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 It is a three-dimensional half-section schematic diagram of the present invention.

[0018] Figure 3 for Figure 2 A magnified schematic diagram of area A in the middle.

[0019] Figure 4 It is a three-dimensional half-section schematic diagram of the control seat body of the present invention.

[0020] Figure 5 for Figure 4 Enlarged schematic diagram of area B in the middle.

[0021] Figure 6 for Figure 5 Enlarged schematic diagram of area C in the middle.

[0022] Figure 7 for Figure 5 Enlarged schematic diagram of area D in the middle.

[0023] Figure 8 It is a three-dimensional half-section front view of the control seat body of the present invention.

[0024] Fig. 9 for Figure 8Enlarged schematic diagram of area E in the middle.

[0025] In the figure: 1, lithium-ion battery cell; 2, sealed shell; 3, sandwich cavity; 4, control seat body; 5, active cavity; 6, traction detection cavity; 7, secondary piston; 8, reset spring; 9, first distance sensor; 10, micro solenoid valve; 501, limit ring; 502, one-way liquid valve; 503, limit end cavity; 504, separation slide; 505, primary piston; 506, annular eaves; 507, piston cavity; 508, liquid hole; 509, dynamic inner disk; 510, through liquid Groove; 511, compression spring; 512, synchronous connecting rod; 513, slider body; 514, embedded blind hole; 515, synchronous pin; 516, driving main rod; 517, second distance sensor; 518, drainage cavity; 519, threaded docking hole; 520, rotary vibration inner shaft; 521, corrugated rack; 522, rotary vibration rack; 523, L-shaped support plate; 524, rack spring; 525, matching transverse edge; 526, matching tooth groove; 301, stabilizing connecting rod; 401, interconnecting inner hole. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figures 1 to 9 The present invention provides a technical solution: a sealed and safe lithium-ion battery for an unmanned ship, comprising a lithium-ion battery cell 1 and a sealed shell 2 wrapped around the lithium-ion battery cell 1, wherein the sealed shell 2 is made of aluminum. Figure 3 As shown in the figure, an interlayer cavity 3 is provided inside the sealed shell 2, and a control seat body 4 is fixedly provided on the surface of the sealed shell 2. An active cavity 5 and a traction detection cavity 6 are provided in the control seat body 4. The cross-sectional areas of the active cavity 5 and the traction detection cavity 6 are equal. The active cavity 5 and the traction detection cavity 6 are communicated with the interlayer cavity 3 respectively. A secondary piston 7 is provided in the traction detection cavity 6. The secondary piston 7 is in sealing contact with the inner wall surface of the traction detection cavity 6. A reset spring 8 is connected to one side of the secondary piston 7. The reset spring 8 applies elastic tension to the secondary piston 7. A first distance sensor 9 is embedded and installed inside the control seat body 4. The first distance sensor 9 is used to detect the position of the secondary piston 7. A pumping structure with a position detection function is provided inside and outside the active cavity 5. A micro solenoid valve 10 is provided on the outside of the interlayer cavity 3. When the pumping structure extracts liquid in the interlayer cavity 3, the micro solenoid valve 10 is controlled to be closed; the micro solenoid valve 10 is a small electrically controlled water valve used to control the opening and closing of a water inlet source.

[0028] The pumping structure includes a limiting ring 501, a one-way liquid valve 502, a limiting end cavity 503 and a separation chute 504. The limiting ring 501 is arranged inside the active cavity 5, and the one-way liquid valve 502 is embedded and fixed in the limiting ring 501. The one-way liquid valve 502 allows the liquid in the interlayer cavity 3 to flow unidirectionally toward the active cavity 5. The end of the active cavity 5 is connected to the limiting end cavity 503, and the control seat 4 is provided with a separation chute 504. A primary piston 505 is arranged in the active cavity 5, and the primary piston 505 is in sealing contact with the inner wall surface of the active cavity 5. A piston cavity 507 is provided in the primary piston 505. A circular canopy 506 is provided on the side of the piston cavity 507 close to the one-way liquid valve 502, and a liquid hole 508 is provided on the side of the piston cavity 507 away from the one-way liquid valve 502.

[0029] A dynamic inner disk 509 is provided in the piston cavity 507, and a liquid groove 510 is opened at the edge of the dynamic inner disk 509. A compression spring 511 is provided on the side of the dynamic inner disk 509 away from the annular eaves 506. The compression spring 511 applies elastic pressure to the dynamic inner disk 509, so that the dynamic inner disk 509 and the annular eaves 506 are sealed and fitted. A synchronous connecting rod 512 is fixedly provided on the first-stage piston 505, and one end of the synchronous connecting rod 512 is sealed and inserted through the end wall of the limiting end cavity 503 and extends into the partition slide groove 504. A slider body 513 is provided in the partition chute 504 for sliding limit, and the slider body 513 is fixedly installed with the synchronous connecting rod 512. An embedded blind hole 514 is provided on the upper surface of the slider body 513, and a synchronous pin 515 is inserted in the embedded blind hole 514. A driving main rod 516 is fixedly provided on the upper part of the synchronous pin 515, and the movement of the driving main rod 516 drives the slider body 513 and the synchronous connecting rod 512 to move. The driving main rod 516 is used to synchronously control multiple groups of batteries. The example in this application only shows a group of battery structures. The reciprocating movement of the driving main rod 516 can be driven by a linear motor or other device.

[0030] A second distance sensor 517 is embedded and installed on the inner wall surface of the separating slide groove 504, and the second distance sensor 517 is used to detect the position of the slider body 513. A drainage cavity 518 is opened inside the control seat body 4, and a threaded docking hole 519 is opened on the surface of the control seat body 4. The limit end cavity 503 is connected with the threaded docking hole 519 through the drainage cavity 518.

[0031] A rotary-vibrating inner shaft 520 is inserted inside the synchronous connecting rod 512. The rotary-vibrating inner shaft 520 is coaxially arranged with the synchronous connecting rod 512, and the rotary-vibrating inner shaft 520 and the synchronous connecting rod 512 are in sealed contact. A corrugated rack 521 is provided inside the separating groove 504, and the corrugated rack 521 is arranged parallel to the length direction of the separating groove 504. A vibration rack 522 is fixedly provided at the end of the vibration inner shaft 520, an L-shaped support plate 523 is fixedly provided on the surface of the slider body 513, and a rack spring piece 524 is fixedly provided on the L-shaped support plate 523. The rack spring piece 524 applies elastic pressure to the vibration rack 522, so that the vibration rack 522 contacts the corrugated rack 521. When the slider body 513 drives the vibration rack 522 to move along the length direction of the partition slide groove 504, the vibration inner shaft 520 can be driven to reciprocate and rotate and vibrate through the cooperation of the corrugated rack 521 and the rack spring piece 524.

[0032] A matching transverse ridge 525 is fixedly provided at one end of the rotary-vibrating inner shaft 520 located inside the piston cavity 507, and a matching tooth groove 526 is provided at the center position of the surface of the dynamic inner disk 509; when the dynamic inner disk 509 contacts the annular eaves 506, the matching transverse ridge 525 and the matching tooth groove 526 are separated from each other; when the dynamic inner disk 509 is pushed open by water pressure and separated from the annular eaves 506, the matching transverse ridge 525 will be inserted into the matching tooth groove 526, and the matching tooth groove 526 will rotate through the rotation of the matching transverse ridge 525.

[0033] A stabilizing link 301 is fixedly disposed inside the interlayer cavity 3 , a mutual inner hole 401 is opened inside the control seat body 4 , and the active cavity 5 and the traction detection cavity 6 are connected to the interlayer cavity 3 through the corresponding mutual inner holes 401 .

[0034] The sealed and safe lithium-ion battery for unmanned boats of the present invention is used. When in use, river water is connected to the micro solenoid valve 10 through the pre-filter device, and the threaded docking hole 519 is connected to the drainage pipe. Since lithium-ion batteries are usually arranged in multiple groups and stacked side by side, the slider bodies 513 in the multiple groups of lithium-ion batteries are driven to move synchronously by driving the main rod 516 to move telescopically.

[0035] like Figure 5 and Figure 7 As shown in the figure, the second distance sensor 517 emits infrared light to the L-shaped support plate 523, and the position of the slider body 513 is detected in real time by detecting the distance between the second distance sensor 517 and the L-shaped support plate 523. Similarly, the first distance sensor 9 detects the distance between the first distance sensor 9 and the secondary piston 7 to achieve real-time detection of the position of the secondary piston 7.

[0036] like Figure 5As shown in the figure, when the driving main rod 516 moves to the right, the micro electromagnetic valve 10 is first controlled to close, and the driving main rod 516 drives the slider body 513 to move to the right through the synchronization pin 515, and the slider body 513 drives the synchronization connecting rod 512 and the primary piston 505 to move to the right; when the primary piston 505 moves to the right, the dynamic inner disk 509 will be in close contact with the annular eaves 506 under the negative pressure and the elastic pressure of the compression spring 511, thereby playing a sealing role. At this time, the liquid in the interlayer cavity 3 is extracted into the active cavity 5 through the one-way liquid valve 502. Since the micro electromagnetic valve 10 is closed, the interlayer cavity 3 is in a sealed state. At this time, the traction inspection The liquid in the measuring chamber 6 will enter the interlayer chamber 3 for equal replenishment, and the secondary piston 7 moves to the left to stretch the reset spring 8. Since the cross-sectional areas of the active chamber 5 and the traction detection chamber 6 are the same, the distance that the primary piston 505 moves to the right is equal to the distance that the secondary piston 7 moves to the left. The moving distances of the primary piston 505 and the secondary piston 7 are detected by the second distance sensor 517 and the first distance sensor 9 respectively. When the moving distances of the two are equal, it indicates that the sealing of the interlayer chamber 3 is intact. When the leftward moving distance of the secondary piston 7 is smaller than the rightward moving distance of the primary piston 505, there is a leakage problem in the interlayer chamber 3.

[0037] When the driving main rod 516 is moved to the right, the micro-solenoid valve 10 is controlled to open. At this time, under the reset elastic tension of the reset spring 8, the secondary piston 7 is reset to the right, so that the liquid in the interlayer cavity 3 is replenished and flows back to the traction detection cavity 6, and the external water flows into the interlayer cavity 3 through the micro-solenoid valve 10; when the driving main rod 516 moves to the left, it drives the primary piston 505 to move to the left. Due to the unidirectional restriction of the one-way liquid valve 502 on the water flow, the water pressure will push open the dynamic inner disk 509 at this time, and flow through the liquid groove 510 and the liquid hole 508 to the limit end cavity 503, and be discharged through the drainage cavity 518 and the threaded docking hole 519.

[0038] When the main rod 516 is driven to move right again, the above cycle is repeated, so that the sealing of the interlayer cavity 3 can be continuously monitored while the water flow is pumped for cooling.

[0039] like Figure 7 As shown in the figure, during the reciprocating movement of the slider body 513 along the length direction of the dividing slide groove 504, the rotary vibration rack 522 is squeezed and contacted with the corrugated rack 521, and continuously moves downward intermittently, and continuously rises and resets through the elastic support of the rack spring 524, so that the rotary vibration inner shaft 520 is in a reciprocating rotational vibration motion state.

[0040] like Figure 6As shown in , when the first-stage piston 505 moves to the right, the dynamic inner disk 509 is squeezed and contacted with the annular canopy 506. At this time, the matching transverse edge 525 is separated from the matching tooth groove 526, and the rotational vibration of the rotary vibration inner shaft 520 will not affect the dynamic inner disk 509. The dynamic inner disk 509 can maintain a good relative static extrusion seal with the annular canopy 506; when the first-stage piston 505 moves to the left, the water pressure pushes the dynamic inner disk 509 open, causing the dynamic inner disk 509 to move to the right. At this time, the matching transverse edge 525 will be inserted into the matching tooth groove 526, and the rotational vibration of the rotary vibration inner shaft 520 will drive the dynamic inner disk 509 to rotate and vibrate. When the water flows through the liquid tank 510, due to the high-frequency rotational vibration of the liquid tank 510, it is difficult for the attachments to attach and stay in front of the liquid tank 510, thereby reducing the probability of attachments being mixed in and causing a poor closure when the dynamic inner disk 509 and the annular canopy 506 come into contact and close next time.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sealed and safe lithium-ion battery for an unmanned ship, comprising a lithium-ion battery cell (1) and a sealed housing (2) wrapped around the lithium-ion battery cell (1), characterized in that: An interlayer cavity (3) is provided inside the sealed housing (2); a control seat body (4) is integrally fixedly provided on the surface of the sealed housing (2); an active cavity (5) and a traction detection cavity (6) are provided in the control seat body (4); the cross-sectional areas of the active cavity (5) and the traction detection cavity (6) are equal; the active cavity (5) and the traction detection cavity (6) are respectively connected to the interlayer cavity (3); a secondary piston (7) is provided in the traction detection cavity (6); the secondary piston (7) is in sealing contact with the inner wall surface of ... A reset spring (8) is connected to one side of the plug (7), and the reset spring (8) applies elastic tension to the secondary piston (7). A first distance sensor (9) is embedded and installed inside the control seat (4), and the first distance sensor (9) is used to detect the position of the secondary piston (7). A pumping structure with a position detection function is arranged inside and outside the active cavity (5). A micro solenoid valve (10) is arranged outside the interlayer cavity (3), and when the pumping structure extracts liquid in the interlayer cavity (3), the micro solenoid valve (10) is controlled to be closed.

2. A sealed and safe lithium-ion battery for unmanned ships according to claim 1, characterized in that: The pumping structure comprises a limit ring (501), a one-way liquid valve (502), a limit end cavity (503) and a separation slide groove (504); the limit ring (501) is arranged inside the active cavity (5); the one-way liquid valve (502) is embedded and fixed in the limit ring (501); the one-way liquid valve (502) allows the liquid in the interlayer cavity (3) to flow unidirectionally toward the active cavity (5); the end of the active cavity (5) is connected to the limit end cavity (503); and the control seat body (4) is provided with a separation slide groove (504) inside.

3. A sealed and safe lithium-ion battery for unmanned ships according to claim 2, characterized in that: A primary piston (505) is provided in the active cavity (5), the primary piston (505) being in sealing contact with the inner wall surface of the active cavity (5), a piston cavity (507) is provided in the primary piston (505), an annular canopy (506) is provided on a side of the piston cavity (507) close to the one-way liquid valve (502), and a liquid through hole (508) is provided through a side of the piston cavity (507) away from the one-way liquid valve (502).

4. A sealed and safe lithium-ion battery for unmanned ships according to claim 3, characterized in that: A dynamic inner disk (509) is provided in the piston cavity (507), and a liquid groove (510) is provided at the edge of the dynamic inner disk (509). A compression spring (511) is provided on the side of the dynamic inner disk (509) away from the annular eaves (506), and the compression spring (511) applies elastic pressure to the dynamic inner disk (509), so that the dynamic inner disk (509) and the annular eaves (506) are sealed and fitted. A synchronous connecting rod (512) is fixedly provided on the primary piston (505), and one end of the synchronous connecting rod (512) is sealed and inserted through the end wall of the limit end cavity (503) and extends into the separation slide groove (504).

5. The sealed and safe lithium-ion battery for unmanned ships according to claim 4, characterized in that: A slider body (513) is provided in the separating slide groove (504) for sliding limit, the slider body (513) and the synchronous connecting rod (512) are fixedly installed, an embedding blind hole (514) is provided on the upper surface of the slider body (513), a synchronous pin shaft (515) is inserted in the embedding blind hole (514), and a driving main rod (516) is fixedly provided on the upper part of the synchronous pin shaft (515), and the movement of the driving main rod (516) drives the slider body (513) and the synchronous connecting rod (512) to move.

6. A sealed and safe lithium-ion battery for unmanned ships according to claim 5, characterized in that: A second distance sensor (517) is embedded and installed on the inner wall surface of the dividing slide groove (504), and the second distance sensor (517) is used to detect the position of the slider body (513). A drainage cavity (518) is opened inside the control seat body (4), and a threaded docking hole (519) is opened on the surface of the control seat body (4). The limit end cavity (503) is connected to the threaded docking hole (519) through the drainage cavity (518).

7. The sealed and safe lithium-ion battery for unmanned ships according to claim 5, characterized in that: A rotary-vibrating inner shaft (520) is inserted into the interior of the synchronous connecting rod (512), the rotary-vibrating inner shaft (520) is coaxially arranged with the synchronous connecting rod (512), and the rotary-vibrating inner shaft (520) and the synchronous connecting rod (512) are in sealed contact, and a corrugated rack (521) is provided inside the separating slide groove (504), and the corrugated rack (521) is arranged in parallel along the length direction of the separating slide groove (504).

8. The sealed and safe lithium-ion battery for unmanned ships according to claim 7, characterized in that: A rotary vibration rack (522) is fixedly provided at the end of the rotary vibration inner shaft (520), an L-shaped support plate (523) is fixedly provided on the surface of the slider body (513), and a rack spring piece (524) is fixedly provided on the L-shaped support plate (523), and the rack spring piece (524) applies elastic pressure to the rotary vibration rack (522), so that the rotary vibration rack (522) contacts the corrugated rack (521), and when the slider body (513) drives the rotary vibration rack (522) to move along the length direction of the partitioning slot (504), the rotary vibration inner shaft (520) can be driven to reciprocate and rotate and vibrate through the cooperation of the corrugated rack (521) and the rack spring piece (524).

9. A sealed and safe lithium-ion battery for unmanned ships according to claim 8, characterized in that: The end portion of the rotary-vibration inner shaft (520) located inside the piston cavity (507) is fixedly provided with a matching transverse ridge (525), and the center position of the surface of the dynamic inner disk (509) is provided with a matching tooth groove (526); when the dynamic inner disk (509) contacts the annular eaves (506), the matching transverse ridge (525) and the matching tooth groove (526) are separated from each other; when the dynamic inner disk (509) is pushed open by water pressure and separated from the annular eaves (506), the matching transverse ridge (525) is inserted into the matching tooth groove (526), ​​and the matching tooth groove (526) is driven to rotate by the rotation of the matching transverse ridge (525).

10. The sealed and safe lithium-ion battery for unmanned ships according to claim 1, characterized in that: A stabilizing connecting rod (301) is fixedly disposed inside the interlayer cavity (3), an intercommunication inner hole (401) is provided inside the control seat body (4), and the active cavity (5) and the traction detection cavity (6) are respectively connected to the interlayer cavity (3) through the corresponding intercommunication inner holes (401).

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