connector

Abstract

The utility model provides a kind of connector, it is applicable to the connection system of lead-acid battery and lithium battery.The connector the connector includes connector plastic shell, silica gel dust cover, 2 / 4 connector pyramidal terminal-M, F-terminal and connector F-acquisition terminal.Connector plastic shell is composed of upper shell and lower shell, is fixed by buckle and bolt structure connector, forms a cavity for accommodating terminal assembly.Silica gel dust cover is installed at the opening of plastic shell, provides dustproof waterproof function.2 / 4 connector pyramidal terminal-M connector and connector F-terminal are respectively used for the connection of lead-acid battery and lithium battery, and stability is ensured by jack and fixing structure.

Description

Technical Field

[0001] This utility model relates to the field of lead-acid battery or lithium battery connector technology, and specifically to a connector. Background Technology

[0002] With the widespread application of modern electrical equipment such as electric vehicles, energy storage devices, electric motorcycles, and battery swapping cabinets, battery connectors, as key components, directly affect the safety and reliability of the entire system.

[0003] Existing battery connectors generally suffer from the following shortcomings:

[0004] Poor compatibility: Most existing connectors can only be matched with a single type of battery (such as only lead-acid batteries or lithium batteries). When changing the battery type or application scenario, the connector must be replaced, which not only increases maintenance costs, but also easily causes downtime and waste of resources.

[0005] Insufficient connection reliability: Traditional connectors mostly use wire lugs and manual soldering, making it difficult to guarantee the quality of solder joints. This can easily lead to poor soldering or poor contact, especially under high current or high frequency insertion and removal conditions, which can easily cause overheating, failure, or even safety accidents.

[0006] Insufficient environmental adaptability: Traditional connectors have limited protective performance and are prone to corrosion and performance degradation when exposed to dusty and humid environments, thus shortening their service life.

[0007] Installation and maintenance are complex: the existing structural design is not modular enough, the installation and maintenance process is cumbersome, and the downtime is long.

[0008] Therefore, there is an urgent need for a multifunctional connector with a reasonable structural design, compatible with lead-acid or lithium batteries, and convenient for installation and maintenance, in order to improve system safety and efficiency. Utility Model Content

[0009] This utility model provides a connector with a reasonable structural design, simple operation, and convenient installation and maintenance.

[0010] To achieve the above objectives, this utility model provides the following technical solution, mainly including:

[0011] A connector comprising:

[0012] The connector plastic housing has a two-part structure with cavities for accommodating and protecting internal components;

[0013] A silicone dust cover is provided at the opening of the connector's plastic housing;

[0014] The 2 / 4" triangular terminal-M is located inside the connector's plastic housing;

[0015] The F-terminal is located inside the connector's plastic housing and is opposite to the 2 / 4" terminal-M.

[0016] The F-acquisition terminal is located inside the connector's plastic housing.

[0017] In one specific embodiment, the connector plastic housing includes an upper housing and a lower housing, which are connected together by a snap-fit ​​structure.

[0018] In one specific embodiment, the silicone dust cover is detachable and has multiple snap-fit ​​parts around the opening of the connector's plastic shell.

[0019] In one specific embodiment, the 2 / 4-pin terminals -M and F- are respectively fixed to the inner sides of the connector's plastic housing and connected to the outside through the socket.

[0020] In one specific embodiment, the F-acquisition terminal is located at the center of the inside of the connector's plastic housing and is adjacent to the 2 / 4-pin terminal-M and the F-terminal.

[0021] In one specific embodiment, the surface of the connector plastic housing is provided with marking grooves for identifying the terminal positions.

[0022] In one specific embodiment, the connector plastic shell and the silicone dust cover have rectangular external shapes, and their edge shapes match each other.

[0023] In one specific embodiment, the 2 / 4-pin terminal-M and F- terminals are made of nickel-plated brass, and the F- acquisition terminal is made of a high-temperature resistant alloy.

[0024] As can be seen from the above technical solution, compared with the prior art, the beneficial effects of this utility model are as follows:

[0025] (1) Compatible with lead-acid and lithium batteries, it can be used with both lead-acid and lithium batteries at the same time, avoiding the trouble of frequently changing connectors and improving the convenience of use.

[0026] (2) Introduce PCB board soldering method to replace traditional wire lug soldering, reduce the risk of poor soldering, and ensure the safety and stability of electrical connection.

[0027] (3) Adopting a dustproof and waterproof design, the connector's stability and service life are improved in harsh environments through the use of silicone dust cover and corrosion-resistant materials.

[0028] (4) Simplify installation and maintenance process: Modular design reduces the complexity of installation and maintenance, making connectors easier to replace and maintain, and reducing usage costs. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0030] Figure 1 This is an exploded view of the three-dimensional structure of this utility model.

[0031] Explanation of reference numerals in the attached diagram: 1: Connector plastic housing, 2: Silicone dust cover, 3: 2 / 4-pin terminal - M, 4: F-terminal, 5: F-acquisition terminal. Detailed Implementation

[0032] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0033] Example 1

[0034] like Figure 1 As shown, this utility model provides a connector that is compatible with the connection requirements of both lead-acid and lithium batteries, while also possessing good safety and reliability. The structure and application of this utility model will be described in detail below with reference to specific embodiments.

[0035] In this embodiment, the multi-functional connector mainly consists of a connector plastic shell 1, a silicone dust cover 2, a 2 / 4-pin terminal-M3, an F-terminal 4, and an F-acquisition terminal 5.

[0036] The connector plastic housing 1 consists of two parts: an upper housing and a lower housing, which are fixed together using a snap-fit ​​and bolt structure. The upper housing has multiple internal isolation slots for installing and securing internal terminal assemblies. The lower housing is connected to the upper housing via a snap-fit ​​structure, forming a sealed cavity capable of accommodating various terminals.

[0037] The connector housing 1 is made of high-strength insulating materials, such as nylon (PA66) or polycarbonate (PC), which can withstand high temperatures and external impacts, and has good insulation properties to effectively protect internal components. The connector housing 1 has multiple ventilation holes on its exterior to ensure good internal heat dissipation and extend the service life of the terminals and connector.

[0038] A silicone dust cover 2 is installed at the opening of the connector's plastic shell 1. This silicone dust cover 2 is made of wear-resistant and high-temperature-resistant silicone material, providing excellent sealing performance and protection. The inner side of the silicone dust cover 2 has an annular protrusion that fits tightly against the edge of the connector's plastic shell 1, preventing external dust and moisture from entering the connector and protecting the terminals from contamination.

[0039] The silicone dust cover 2 is designed with a pull tab for easy installation and removal, while also creating a tight seal between the silicone dust cover 2 and the connector plastic housing 1. 2 / 4" T-type terminal block - M3

[0040] The 2 / 4" pin-M3 connector is specifically designed for lead-acid batteries, featuring a multi-pin triangular arrangement. Made of nickel-plated brass with an anti-oxidation treatment, the 2 / 4" pin-M3 offers excellent conductivity and corrosion resistance. It is crimped into the corresponding slot in the connector's plastic housing 1 and secured with bolts, ensuring reliability and stability under high-current operating conditions.

[0041] F-terminal 4 is designed as a dedicated terminal for lithium battery connections. It is made of corrosion-resistant stainless steel or nickel-plated copper and can accommodate various types of lithium battery interfaces. F-terminal 4 is fixed inside the connector's plastic housing 1 on the other side by bolts and anti-loosening washers, which can maintain stability during high-frequency mating and unmating operations.

[0042] The F-terminal 4 features a modular design, making it easy to replace different types of terminals according to different application requirements, further enhancing the connector's adaptability.

[0043] The F-sensing terminal 5 is located at the center of the connector's plastic housing 1. It is designed as a direct-insertion terminal and is used to monitor the battery's operating status and performance parameters. The F-sensing terminal 5 is made of a high-temperature resistant alloy material, possessing stability under high temperature and high pressure environments.

[0044] F-Acquisition terminal 5 is electrically connected to the battery management system (BMS) via a metal contact piece, enabling it to acquire data such as battery voltage, current, and temperature in real time, and transmit the data to an external monitoring system through a standard signal output interface.

[0045] In this embodiment, the connector is connected to the external battery system via PCB board soldering. All terminals are pre-soldered on the PCB board, reducing the risk of poor soldering associated with traditional wire connections, simplifying installation steps, and improving production efficiency.

[0046] During installation, first insert all types of terminals (2 / 4-pin terminal - M3, F-terminal 4, F-acquisition terminal 5) into the corresponding slots on the upper housing and secure them with bolts and clips. Then, connect the upper and lower housings using clips and bolts to form a single connector plastic housing 1. Finally, install the silicone dust cover 2 to complete the assembly.

[0047] This utility model adopts a multi-terminal composite layout design:

[0048] The 2 / 4-pin terminal -M is made of nickel-plated brass and is specially designed to fit lead-acid battery interfaces;

[0049] The F-terminal is made of stainless steel or nickel-plated copper and is specifically designed to be compatible with lithium battery interfaces.

[0050] The two types of terminals are located in different isolated slots inside the connector's plastic housing and are secured separately by clips and bolts, ensuring electrical isolation between them and preventing interference or short circuits during insertion and removal. This physical layout allows the same connector to be used in different scenarios by simply selecting the appropriate terminal, without needing to replace the entire connector.

[0051] This invention arranges a voltage detection circuit and a control logic module on a PCB board, and automatically identifies the battery type by sampling the battery terminal voltage and recognizing the terminal connection status.

[0052] When the detection voltage is 12V±10% and the three-prong terminal is connected, it is determined to be a lead-acid battery;

[0053] When the detection voltage is 48V±10% and the F- terminal is connected, it is determined to be a lithium battery;

[0054] The control module switches the corresponding current path through the MOSFET, so that both types of batteries can be powered and monitored through the same connector.

[0055] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0056] Example 2

[0057] Building upon the above embodiments, this invention further expands its application scenarios. Specifically, the connector described in this invention is not only compatible with the electrical connections of lead-acid and lithium batteries, but is also particularly suitable for battery swapping systems. In battery swapping mode, individual battery cells or battery modules achieve rapid charging and discharging via a direct-plug PCB board interface with the connector, eliminating the need for additional wiring procedures and significantly simplifying the installation and maintenance process.

[0058] The through-hole PCB interface directly solders multiple terminals to the electrical output terminals of the battery module, forming a highly reliable electrical path. When replacing the battery, the user only needs to insert the battery into the corresponding slot to complete the electrical connection, eliminating the need for traditional cable plugging and unplugging. This avoids problems such as loose connections and loosening caused by repeated cable plugging and unplugging, thereby improving the stability and safety of the system in high-frequency battery swapping scenarios.

[0059] Furthermore, based on this technology, this invention can be extended to various application environments. For example, it can be combined with the battery swapping requirements of battery swapping cabinets, electric motorcycles, or energy storage power stations to achieve modular and rapid access and replacement. By integrating voltage detection and charge / discharge control logic on the PCB board, the connector of this invention can complete type identification and current path switching the instant the battery is inserted, ensuring that battery swapping of different specifications can all work under a unified interface.

[0060] Therefore, this invention not only meets the needs of fixed battery connections in existing vehicles and energy storage devices, but also extends to battery swapping scenarios, achieving a highly efficient "plug-and-play" operation mode. This expanded application significantly improves the connector's applicability and industrial value.

[0061] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A connector characterized by comprising: include: The connector plastic housing has a two-part structure with cavities for accommodating and protecting internal components; A silicone dust cover is provided at the opening of the connector's plastic housing; The 2 / 4" triangular terminal-M is located inside the connector's plastic housing; The F-terminal is located inside the connector's plastic housing and is opposite to the 2 / 4" terminal-M. The F-acquisition terminal is located inside the connector's plastic housing.

2. The connector of claim 1, wherein The connector plastic housing includes an upper housing and a lower housing, which are connected together by a snap-fit ​​structure.

3. The connector of claim 1, wherein The silicone dust cover is detachable and has multiple snap-fit ​​parts around the opening of the connector's plastic shell.

4. The connector of claim 1, wherein The 2 / 4-pin terminals -M and F- are fixed to the inside sides of the connector's plastic housing and connected to the outside through the socket.

5. The connector of claim 1, wherein The F-acquisition terminal is located at the center of the inside of the connector's plastic housing and is adjacent to the 2 / 4-pin terminal-M and the F-terminal.

6. The connector of claim 1, wherein The surface of the connector's plastic housing is provided with marking grooves for identifying the terminal positions.

7. The connector of claim 1, wherein The connector's plastic housing and silicone dust cover are rectangular in shape, and their edge shapes match each other.

8. The connector of claim 1, wherein The 2 / 4" terminals - M and F are made of nickel-plated brass, and the F-acquisition terminal is made of high-temperature resistant alloy.

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