External battery pack based on catamaran and catamaran

Abstract

The utility model discloses an external battery pack based on a catamaran and the catamaran, and belongs to the technical field of electric drive ships, the external battery pack comprises a battery pack, an explosive bolt and a detonation device, the battery pack is hung between two catamaran bodies of the catamaran through the explosive bolt, a battery cell temperature detection module is arranged in the battery pack, and the battery cell temperature detection module is connected with the detonation device. When the temperature of any battery cell in the battery pack reaches a preset temperature, the detonating device is triggered to detonate the explosive bolt, so that the battery pack falls off from the ship body; the battery pack is arranged in the middle of the catamaran in a suspended mode, when the temperature in the battery pack is too high, the battery pack is separated from the catamaran body through the explosive bolts, and the safety of the catamaran is improved.

Description

Technical Field

[0001] This document belongs to the technical field of power-driven ships, and particularly relates to an external battery pack based on a catamaran and a catamaran. Background Art

[0002] The power energy storage of power-driven ships generally uses two types of batteries, both of which are arranged inside the hull. One is a lead-acid battery; the other is a lithium iron phosphate battery. The former has the advantage of high safety factor, but the disadvantage of low energy density; the latter has the advantage of high energy density, which is 3-4 times that of lead-acid batteries. Although its safety factor is much higher than that of ternary lithium batteries, it may still cause spontaneous combustion or explosion in extreme cases such as being violently impacted or overcharged. Even if the existing built-in battery fire protection system is perfect, it still cannot extinguish the deflagration caused by lithium batteries in time. Summary of the Utility Model

[0003] This document aims to provide an external battery pack based on a catamaran and a catamaran. By suspending the battery pack in the middle of the catamaran, when the temperature inside the battery pack is too high, the battery pack is separated from the hull through explosion bolts, improving the safety of the catamaran.

[0004] The technical solutions adopted by this document to solve the above technical problems are as follows:

[0005] According to one aspect of this document, an external battery pack based on a catamaran is provided, including: a battery pack, explosion bolts, and a detonating device. The battery pack is suspended between the two hulls of the catamaran through explosion bolts. A cell temperature detection module is arranged inside the battery pack. When the temperature of any one cell inside the battery pack reaches a preset temperature, the detonating device is triggered to detonate the explosion bolts, causing the battery pack to fall off the hull.

[0006] Optionally, an electric winch device is arranged on the hull, and the electric winch device is located directly above the battery pack.

[0007] Optionally, the electric winch device includes: a drive motor, a winch, a steel wire rope, a transmission gear, a bearing seat, a bearing, a coupling, and a coupling slip ring. The drive motor drives the coupling through the transmission gear. The coupling transmits power to the winch through a metal key bar. The winch is fixed to the hull through the bearing and the bearing seat. One end of the steel wire rope is wound around the winch, and the other end of the steel wire rope is connected to the battery pack.

[0008] Optionally, a pull rod is provided on the coupling slip ring. The pull rod is fixed by a pull rod fixing device, which includes a spring, a first pin, a second pin and a gasket. The first pin is close to the coupling to control the separation of the coupling from the transmission gear. The second pin is fixed to one side of the spring through the gasket. When the first pin is pulled out, the pull rod will displace under the tension of the spring to combine with the transmission gear to transmit power.

[0009] Optionally, the explosive bolt is arranged inside the circular thick-wall protection pipe of the hull.

[0010] Optionally, the detonating device is connected to a communication line. When the temperature of any one of the battery cells in the battery pack reaches a preset temperature, the detonating device is triggered through the communication line.

[0011] Optionally, an insulating backing plate, a communication extension wire, a negative high-voltage extension wire and a positive high-voltage extension wire are provided at the explosive bolt; three insertion holes are provided on the insulating backing plate, corresponding to the communication extension wire, the negative high-voltage extension wire and the positive high-voltage extension wire respectively.

[0012] Optionally, the battery pack is a cluster of batteries composed of a plurality of battery cells.

[0013] Optionally, the battery pack contains multiple clusters of batteries. When the temperature of a certain battery cell reaches the preset temperature, the battery cluster where the battery cell is located falls off from the hull.

[0014] As another aspect of the present invention, a catamaran is provided, including the external battery pack based on the catamaran described above.

[0015] An external battery pack based on a catamaran and a catamaran according to an embodiment of the present utility model. The external battery pack includes a battery pack, an explosive bolt and a detonating device. The battery pack is suspended between the two hulls of the catamaran through the explosive bolt. A battery cell temperature detection module is arranged in the battery pack. When the temperature of any one of the battery cells in the battery pack reaches a preset temperature, the detonating device is triggered to detonate the explosive bolt, so that the battery pack falls off from the hull; by suspending the battery pack in the middle of the catamaran, when the temperature in the battery pack is too high, the battery pack is separated from the hull through the explosive bolt, improving the safety of the catamaran. Description of the Drawings

[0016] Figure 1 It is a structural diagram of an external battery pack based on a catamaran provided by Embodiment 1 of the present utility model;

[0017] Figure 2 It is a structural diagram of an electric winch device provided by Embodiment 1 of the present utility model;

[0018] Figure 3 Structural diagram of an explosion bolt provided in the first embodiment of the present utility model;

[0019] Figure 4 Another structural diagram of an external battery pack based on a catamaran provided in the first embodiment of the present utility model.

[0020] Reference numerals

[0021] 1 - Battery pack, 11 - First battery cluster, 12 - Second battery cluster, 13 - Third battery cluster, 14 - Fourth battery cluster, 2 - Explosion bolt, 3 - Detonating device, 4 - Electric winch device, 41 - Driving motor, 42 - Winch, 43 - Steel wire rope, 44 - Transmission gear, 45 - Bearing seat, 46 - Bearing, 47 - Coupler, 48 - Coupler slip ring, 481 - Pull rod, 482 - Spring, 483 - First pin, 484 - Second pin, 485 - Gasket, 5 - Communication line, 6 - Circular thick - walled protective tube.

[0022] The realization of the purpose of this article, functional features and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings. Detailed implementation manners

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved in this article clearer and more understandable, the following further details this article in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this article and are not used to limit this article.

[0024] In subsequent descriptions, suffixes such as "module", "component" or "unit" used to represent elements are only for the convenience of describing the present utility model, and they have no specific meaning in themselves. Therefore, "module", "component" or "unit" can be used interchangeably.

[0025] First embodiment

[0026] As Figure 1 shown, in this embodiment, an external battery pack based on a catamaran includes: a battery pack 1, an explosion bolt 2 and a detonating device 3. The battery pack 1 is suspended between the two hulls of the catamaran through the explosion bolt 2. A battery core temperature detection module is provided inside the battery pack 1. When the temperature of any battery core in the battery pack 1 reaches a preset temperature, the detonating device 3 is triggered to detonate the explosion bolt 2, so that the battery pack 1 falls off from the hull.

[0027] In this embodiment, by suspending the battery pack 1 in the middle of the catamaran, when the temperature inside the battery pack 1 is too high, the battery pack 1 is separated from the hull through the explosion bolt 2, improving the safety of the catamaran.

[0028] In this embodiment, the battery pack 1 is suspended on the simply supported beam structure between the two hulls of the catamaran, so that a certain height from the water surface (about 30 - 50 cm) can be ensured even under full load. This design can also be used for a single-hull ship, but an external cantilever beam structure needs to be installed on the single-hull ship. For the battery pack 1 of the same weight, the maximum bending moment borne by the cantilever beam structure is four times that borne by the simply supported beam structure, with higher cost and insufficient safety.

[0029] As Figure 2 shown, in this embodiment, an electric winch device 4 is provided on the hull, and the electric winch device 4 is located directly above the battery pack 1.

[0030] In this embodiment, the electric winch device 4 includes: a drive motor 41, a winch 42, a steel wire rope 43, a transmission gear 44, a bearing seat 45, a bearing 46, a coupling 47 and a coupling slip ring 48. The drive motor 41 drives the coupling 47 through the transmission gear 44. The coupling 47 transmits power to the winch 42 through a metal key bar. The winch 42 is fixed to the hull through the bearing 46 and the bearing seat 45. One end of the steel wire rope 43 is wound around the winch 42, and the other end of the steel wire rope 43 is connected to the battery pack 1.

[0031] In this embodiment, the electric winch device 4 can control the lifting and lowering of the battery pack 1 without the explosion bolt 2 for battery disassembly and assembly. When the battery pack 1 falls into the water to a safe enough depth from the hull due to overheating, it will be limited and towed by the steel wire rope 43. When the battery pack 1 burns out, the wreckage will be lifted up by the steel wire rope 43 for recovery, which also avoids polluting the water source.

[0032] As Figure 2 shown, in this embodiment, a pull rod 481 is provided on the coupling slip ring 48. The pull rod 481 is fixed through a pull rod fixing device. The pull rod fixing device includes: a spring 482, a first pin 483, a second pin 484 and a gasket 485. The first pin 483 is close to the coupling 47 to control the separation of the coupling 47 from the transmission gear 44. The second pin 484 is fixed on one side of the spring 482 through the gasket 485. When the first pin 483 is pulled out, the pull rod 481 will displace under the tension of the spring 482 and combine with the transmission gear 44 to transmit power.

[0033] As Figure 3 shown, in this embodiment, the explosion bolt 2 is arranged in a circular thick-walled protection tube 6 inside the hull. When detonated, the circular thick-walled protection tube 6 provides protection, so that the battery pack 1 can avoid damaging the hull when detaching from the hull.

[0034] In this embodiment, the detonation device 3 is connected to the communication line 5. When the temperature of any one of the battery cells in the battery pack 1 reaches the preset temperature, the detonation device 3 is triggered through the communication line 5.

[0035] In this embodiment, an insulating pad, a communication extension line, a negative high-voltage extension line, and a positive high-voltage extension line are provided at the explosive bolt 2; three insertion holes are provided on the insulating pad, corresponding to the communication extension line, the negative high-voltage extension line, and the positive high-voltage extension line respectively. When the battery pack 1 experiences thermal runaway and detaches from the hull, the insulating pad can just block the plug of the high-voltage box inside the hull.

[0036] In this embodiment, the battery pack 1 is a cluster of batteries, composed of a plurality of battery cells.

[0037] As another embodiment, as Figure 4 shown, the battery pack 1 contains multiple clusters of batteries: the first battery cluster 11, the second battery cluster 12, the third battery cluster 13, and the fourth battery cluster 14. Each battery cluster is independent and mutually backup. When the temperature of a certain battery cell reaches the preset temperature, the battery cluster where the battery cell is located detaches from the hull.

[0038] Embodiment 2

[0039] In this embodiment, a catamaran includes the external battery pack 1 based on the catamaran described in Embodiment 1.

[0040] In this embodiment, by suspending the battery pack 1 in the middle of the catamaran, when the temperature inside the battery pack 1 is too high, the battery pack 1 is separated from the hull through the explosive bolt 2, improving the safety of the catamaran.

[0041] The preferred embodiments of the present invention have been described above with reference to the accompanying drawings. The scope of the rights of the present invention is not limited thereby. Any modifications, equivalent replacements, and improvements made by those skilled in the art without departing from the scope and essence of the present invention shall fall within the scope of the rights of the present invention.

Claims

1. An external battery pack based on a catamaran, characterized in that: include: A battery pack, an explosive bolt and a detonating device, wherein the battery pack is suspended between the two hulls of a catamaran by means of the explosive bolts, and a battery cell temperature detection module is arranged in the battery pack. When the temperature of any battery cell in the battery pack reaches a preset temperature, the detonating device is triggered to detonate the explosive bolt, causing the battery pack to fall off the hull.

2. The catamaran-based external battery pack according to claim 1, characterized in that: An electric winch device is provided on the hull, and the electric winch device is located directly above the battery pack.

3. The catamaran-based external battery pack according to claim 2, characterized in that: The electric winch device includes: a drive motor, a winch, a wire rope, a transmission gear, a bearing seat, a bearing, a coupler and a coupler slip ring. The drive motor drives the coupler through the transmission gear. The coupler transmits power to the winch through a metal key bar. The winch is fixed to the hull through a bearing and a bearing seat. One end of the wire rope is wound around the winch, and the other end of the wire rope is connected to the battery pack.

4. The catamaran-based external battery pack according to claim 3, characterized in that: A pull rod is provided on the coupler slip ring, and the pull rod is fixed by a pull rod fixing device. The pull rod fixing device includes: a spring, a first pin, a second pin and a gasket. The first pin is close to the coupler to control the separation of the coupler from the transmission gear. The second pin is fixed to one side of the spring by a gasket. When the first pin is pulled out, the pull rod will be displaced under the tension of the spring and combine with the transmission gear to transmit power.

5. The catamaran-based external battery pack according to claim 1, characterized in that: The explosive bolt is arranged in a circular thick-walled protective tube inside the hull.

6. The catamaran-based external battery pack according to claim 1, characterized in that: The detonation device is connected to the communication line, and when the temperature of any battery cell in the battery pack reaches a preset temperature, the detonation device is triggered through the communication line.

7. The catamaran-based external battery pack according to claim 1, characterized in that: An insulating pad, a communication extension line, a negative high-voltage extension line and a positive high-voltage extension line are arranged at the explosive bolt; three insertion holes are arranged on the insulating pad, which respectively correspond to the communication extension line, the negative high-voltage extension line and the positive high-voltage extension line.

8. The catamaran-based external battery pack according to claim 1, characterized in that: The battery pack is a battery cluster consisting of a plurality of battery cells.

9. The catamaran-based external battery pack according to claim 1, characterized in that: The battery pack contains multiple battery clusters. When the temperature of a battery cell reaches a preset temperature, the battery cluster containing the battery cell falls off from the hull.

10. A catamaran, characterized in that: An external battery pack based on a catamaran comprising any one of claims 1-9.

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