Electrified contact butt joint feeding device for large battery pack

Abstract

The invention discloses a large battery pack electrified contact butt joint feeding device, and relates to the technical field of underwater unmanned underwater vehicles. The device is composed of a butt joint structure (1) and two feeding mechanisms (2), the butt joint structure (1) comprises an insulating transverse plate (7), a switching transverse plate (6), a guide groove (4) and a triangular reinforcing plate (5), and the insulating transverse plate (7) is provided with a plurality of silver-plated copper contacts (3); the feeding mechanism (2) comprises a feeding screw rod (9) and a hand wheel nut (10) with internal threads, the device is suitable for the battery pack with guide rails on two sides, the structure is simple, butt joint and feeding can be achieved only through two mechanisms, accurate butt joint is conducted through the original guide rails of the battery pack, the butt joint precision is high, and the butt joint efficiency is high. By using the device, the docking reliability can be improved when the battery pack of the unmanned underwater vehicle is subjected to delivery inspection or charge-discharge test, the integrity of the battery pack during inspection is not damaged, and safety accidents are avoided, so that the personnel, equipment and time costs are reduced.

Description

Technical Field

[0001] This invention relates to the field of underwater unmanned submersible technology, and in particular to a large battery pack live contact docking and feeding device. Background Technology

[0002] For long endurance, reusability, and low cost, underwater unmanned vehicles (UUVs) currently primarily use battery packs to power their systems. Larger UUVs have larger and heavier battery packs. Large battery packs can be used for external power supply or charging via terminals, connectors, and contacts. Underwater UUV batteries need to withstand immense water pressure and must be housed in pressure-resistant cylindrical casings. For ease and speed of installation, battery packs typically use contact-type or automatic docking connectors. When the battery pack is inserted into the cylindrical casing, the battery pack guide rails advance along guide grooves, and the loading thrust electrically connects the automatic docking connectors or energized contacts to the corresponding mechanisms in the casing. Among these, the contact-type design is widely used in various underwater UUV battery packs due to its simple and reliable structure and strong current-carrying capacity.

[0003] However, when individual battery packs undergo factory inspection or charge / discharge testing, contact-type battery packs, due to the special nature of their contacts, cannot easily interface with external devices such as chargers and discharge loads. Especially during full-load testing, reliable connection between the external device and the battery pack contacts is crucial. Unreliable contact can lead to contact overheating, high contact resistance, large voltage drop, and equipment malfunction, even causing open circuits, arcing, fires, or short circuits. There are two main existing connection methods: one is to remove the contacts and connect them using copper terminals secured with screws and nuts at the front end, ensuring proper insulation, thus bypassing the contacts; the other method is to directly install the large battery pack into the battery compartment housing used in actual operation, using the corresponding mechanism of the housing to interface with it, and then connecting terminals or connectors from the rear of the housing for electrical connection to external devices. Method 1 requires removing the contacts while the circuit is energized, posing a safety hazard. Furthermore, skipping the contacts means that their performance cannot be fully assessed during full-load testing, resulting in incomplete evaluation. Additionally, this method compromises the integrity of the battery pack during testing, rendering previously passed tests uncontrollable, which contradicts quality control principles. Method 2 requires assembling the battery pack into the battery compartment housing, ensuring complete compatibility with battery pack usage and thorough verification. However, it requires the battery pack housing to be inspected simultaneously. Due to the large size of the battery pack, a battery pack loading device is also needed, increasing the demand for personnel and equipment, complicating transportation procedures, increasing dependence on related equipment, and raising costs. Summary of the Invention

[0004] The purpose of this invention is to provide a large battery pack live contact docking feeding device, which enables reliable docking of the battery pack with external equipment such as chargers and discharge loads during factory inspection or charge / discharge testing, ensuring high docking accuracy and stability, reducing the need for personnel and equipment, and lowering the cost of use.

[0005] The technical solution proposed in this invention is implemented as follows: A large battery pack live contact docking feeding device consists of one docking structure (1) and two feeding mechanisms (2). The docking structure (1) includes an insulating horizontal plate (7), a transition horizontal plate (6), a guide groove (4), and a triangular reinforcing plate (5). The feeding mechanism (2) includes a feeding screw (9) and a handwheel nut (10). Multiple silver-plated copper contacts (3) are installed on the insulating horizontal plate (7). The two sides of the insulating horizontal plate (7) are respectively connected to two transition horizontal plates (6), and the other side of the two transition horizontal plates (6) is respectively connected to two guide grooves (4) for docking with the battery pack guide rail. Two triangular reinforcing plates (5) are installed between the guide groove (4) and the transition horizontal plate (6). One end of each of the two feed screws (9) of the feed mechanism (2) is fixed to the two guide rails on both sides of the battery by threaded installation. Then, they pass through the through holes on the adapter plate (6), align the guide grooves (4), and insert them into the battery pack guide rails to complete the docking. The two handwheel nuts (10) of the feed mechanism (2) are screwed in from the other end of the feed screws (9). The adapter plate (6) is made of metal. Multiple silver-plated copper contacts (3) are installed on the insulating plate (7) using thin nuts (8). The inner side of the silver-plated copper contacts (3) is connected to the battery pack contacts, and the outer side is connected to external equipment through the access cable. The handwheel nuts (10) have internal threads.

[0006] The beneficial effects of this invention are as follows: The large battery pack live contact docking feeding device provided by this invention has a simple and reliable structure. It uses guide grooves to dock with the battery pack and feeds and clamps through threads. Its advantages include: 1. Simple structure, requiring only two mechanisms to achieve docking and feeding, utilizing the original guide rails of the battery pack for accurate docking with high precision. 2. For large battery packs, the contacts require a large docking force due to overcurrent requirements. The device uses a threaded engagement feeding method, which is smooth and controllable when operated by both hands, allowing for the application of a large feeding force to ensure stable contact between the battery pack contacts and the docking mechanism contacts. 3. Due to the use of left and right guide grooves for constraint, the docking mechanism has high rigidity and precision, and is less prone to deviation in the left, right, up, and down directions, resulting in high docking stability. 4. The silver-plated copper contacts of the docking mechanism are converted to internal thread interfaces, which can be adapted to the wiring methods of various external devices, resulting in high versatility. 5. This device can be operated by 1-2 people and is simple to use. 6. Large battery packs have high voltage. When using this device, the docking mechanism can be connected to the external equipment first before docking and feeding. The wiring is not energized, making the operation safer. Attached Figure Description

[0007] Figure 1 Schematic diagram of battery pack structure; Figure 2 A schematic diagram illustrating the composition and operation of a large battery pack live contact docking and feeding device. Figure 3 Diagram of docking mechanism composition; Figure 4 Diagram of the feed mechanism.

[0008] In the diagram: 1-Dating mechanism, 2-Feeding mechanism, 3-Silver-plated copper contact, 4-Guide groove, 5-Triangular reinforcing plate, 6-Adapter plate, 7-Insulating plate, 8-Thin nut, 9-Feed screw, 10-Handwheel nut. Detailed Implementation

[0009] The technical solution and advantages of the present invention will be further described below with reference to the accompanying drawings and embodiments. As shown in the figure: A large battery pack live contact docking feeding device consists of one docking structure (1) and two feeding mechanisms (2), and the installation method is as follows: The docking structure (1) is "gate" shaped. First, several silver-plated copper contacts (3) are installed on an insulating horizontal plate (7) made of non-metallic material using thin nuts (8). In order to reduce the stress on the insulating horizontal plate (7), while meeting the creepage distance of each silver-plated copper contact (3), a metal adapter horizontal plate (6) is connected to each side of the insulating horizontal plate (7). The two adapter horizontal plates (6) are connected to two guide grooves (4) to the outside. The guide grooves (4) are used to dock with the battery pack rail and slide on the rail. Two triangular reinforcing plates (5) are installed between the guide grooves (4) and the adapter horizontal plates (6) to increase the rigidity of the entire mechanism.

[0010] The feed mechanism (2) consists of a feed screw (9) and a handwheel nut (10) with internal threads.

[0011] This device is suitable for battery packs with guide rails on both sides. When using it, a threaded hole needs to be machined on each of the guide rails on both sides of the battery pack in advance. Figure 1 As shown), the two feed screws (9) of the feeding mechanism are first fixed to the battery guide rail by threaded installation. Then, the installed docking mechanism (1) is inserted into the feed screws (9) through the through hole on the adapter plate (6), and the guide groove (4) is aligned and inserted into the battery guide rail to complete the docking. Then, the two handwheel nuts (10) of the feeding device are screwed in from the end of the feed screws (9). When the inner side of the silver-plated copper contact (3) of the docking mechanism contacts the battery contact, the handwheel nuts are rotated synchronously by both hands to make the docking mechanism (1) press on both sides and move synchronously to squeeze the battery contact, thus completing the feeding. Subsequently, a cable can be connected to the outside of the silver-plated copper contact (3) to connect to external equipment as needed.

Claims

1. A feeding device for live contact docking of a large battery pack, characterized in that: It consists of one docking structure (1) and two feeding mechanisms (2). The docking structure (1) includes an insulating horizontal plate (7), a transition horizontal plate (6), a guide groove (4), and a triangular reinforcing plate (5). The feeding mechanism (2) includes a feeding screw (9) and a handwheel nut (10).

2. The large battery pack live contact docking feeding device according to claim 1, characterized in that: Multiple silver-plated copper contacts (3) are installed on the insulating cross plate (7).

3. The large battery pack live contact docking feeding device according to claim 1, characterized in that: The insulating horizontal plate (7) is connected to two connecting horizontal plates (6) on both sides respectively. The other side of the two connecting horizontal plates (6) is connected to two guide grooves (4) for docking with the battery pack guide rail.

4. The large battery pack live contact docking feeding device according to claim 1, characterized in that: Two triangular reinforcing plates (5) are installed between the guide groove (4) and the transition plate (6).

5. The large battery pack live contact docking feeding device according to claim 1, characterized in that: During installation, one end of each of the two feed screws (9) of the feed mechanism (2) is fixed to the two guide rails on both sides of the battery by threaded installation. Then, the guide groove (4) is aligned and inserted into the battery pack guide rail through the through hole on the adapter plate (6) to complete the docking. The two handwheel nuts (10) of the feed mechanism (2) are screwed in from the other end of the feed screw (9).

6. The large battery pack live contact docking feeding device according to claim 1, characterized in that: The adapter plate (6) is made of metal.

7. The large battery pack live contact docking feeding device according to claim 1, characterized in that: Multiple silver-plated copper contacts (3) are installed on an insulating cross plate (7) using thin nuts (8). The inner side of the silver-plated copper contacts (3) is connected to the battery pack contacts, and the outer side is connected to external equipment via an access cable.

8. The large battery pack live contact docking feeding device according to claim 1, characterized in that: Handwheel nut (10) with internal thread.

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