Stacked energy storage device battery pack plugging structure convenient to expand

Abstract

The utility model belongs to the technical field of battery plug-in structures, and particularly relates to a stack-type energy storage device battery pack plug-in structure convenient to expand, which comprises a plug and a socket, the plug is provided with a fixed seat, a metal head is arranged at the front end of the fixed seat, and sliding scrapers are arranged on two sides of the metal head. A spring is arranged between the bottom of the sliding type scraping piece and the fixing base, the rear end of the fixing base is connected with a first connecting line, the socket is provided with a base, the front end of the base is provided with a guide groove matched with the sliding type scraping piece, the rear end of the base is connected with a second connecting line, and pollutants in the guide groove can be scraped by inserting the sliding type scraping piece into the guide groove. The manual maintenance frequency is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of battery plug-in structure technology, specifically relating to a battery pack plug-in structure for a stackable energy storage device that is easy to expand. Background Technology

[0002] Modular stacked battery packs consist of multiple standardized sub-modules stacked vertically or horizontally, with each module independently packaged and connected in series and parallel to meet voltage and capacity requirements.

[0003] Chinese patent CN217903332U, with an authorization announcement date of November 25, 2022, discloses a battery pack stacking structure for a combined energy storage device. This application includes at least two battery packs stacked vertically. The lower part of the topmost first battery pack has a sliding groove mechanism, and a pulley locking mechanism matching the sliding groove mechanism is located on the top of the second battery pack below the first battery pack. The sliding groove mechanism and the pulley locking mechanism are used to engage or disengage the first and second battery packs during stacking. The sliding groove mechanism includes a slide rail and a positioning mechanism, and the pulley locking mechanism includes a pulley group and a locking spring assembly. After the first and second battery packs are stacked, either the first battery pack can be lifted or the second battery pack can be moved. This battery pack stacking structure improves battery pack handling efficiency and saves handling time. It also solves the problem of external expansion of the energy storage box product, offering good product flexibility.

[0004] Existing battery pack connector structures suffer from a sharp drop in ionic conductivity of conventional electrolytes below -10°C, resulting in a discharge capacity decay of over 30%. The commonly used IP67 protection is insufficient to cope with sandstorms or flood immersion scenarios, leading to easy aging and failure of the interface seal. As can be seen from the above application, existing battery pack connector structures have the disadvantages of poor low-temperature performance and limited dust and water resistance. Therefore, a stackable energy storage device battery pack connector structure that is easy to expand is proposed. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a stackable energy storage device battery pack insertion structure that is easy to expand. By using a sliding scraper to insert into the guide groove, contaminants inside the guide groove can be scraped away, thereby solving the problems mentioned above.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a stackable energy storage device battery pack plug-in structure that is easy to expand, including a plug and a socket. The plug has a fixed base, a metal head is provided at the front end of the fixed base, sliding scrapers are provided on both sides of the metal head, a spring is provided between the bottom of the sliding scraper and the fixed base, a first connecting line is connected to the rear end of the fixed base, and the socket has a base, a guide groove matching the sliding scraper is provided at the front end of the base, and a second connecting line is connected to the rear end of the base.

[0007] Preferably, the outer periphery of the fixing base and the base is covered with a silicone shell, and an annular rubber ring is provided on the contact surface of the fixing base and the base.

[0008] Preferably, a protective cover is provided on the outer periphery of the front end of the fixed base, the protective cover is arranged around the metal head and slides and matches the outer periphery of the base.

[0009] Preferably, a buckle is provided on one side of the plug, and a slot matching the buckle is provided on one side of the socket.

[0010] Preferably, magnet blocks are provided on the contact surfaces of both the fixing base and the base.

[0011] Preferably, the space between the mounting base and the silicone shell is filled with hydrophobic gel.

[0012] Preferably, the outer side of the sliding scraper is impregnated with molybdenum disulfide.

[0013] Preferably, the surface of the metal head is coated with a nickel layer and a graphene coating.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: by using a sliding scraper to insert into the guide groove, contaminants inside the guide groove can be scraped off, reducing the frequency of manual maintenance.

[0015] The silicone shell and hydrophobic gel work together to achieve a composite seal through a ring-shaped rubber ring, providing long-term waterproof and dustproof protection.

[0016] The synergy between magnetic attraction and latches enhances operational safety.

[0017] Additional aspects and advantages of this utility model application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this utility model application. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the connection state of a stacked energy storage device battery pack plug-in structure that is easy to expand.

[0019] Figure 2 This is a three-dimensional structural diagram of a stacked energy storage device battery pack with a split configuration that is easy to expand.

[0020] Figure 3 This is a three-dimensional schematic diagram of a plug structure for a stacked energy storage device battery pack that is easy to expand.

[0021] Figure 4 This is a three-dimensional structural diagram of a socket for a stacked energy storage device battery pack plug-in structure that is easy to expand.

[0022] Figure 5This is a cross-sectional view of a plug for a stacked energy storage device battery pack that is easy to expand.

[0023] Figure 6 This is a cross-sectional view of a socket for a stacked energy storage device battery pack plug-in structure that is easy to expand.

[0024] Figure 7 This is a schematic diagram of a sliding scraper three-dimensional structure for a stacked energy storage device battery pack plug-in structure that is easy to expand.

[0025] In the diagram: 1. Plug; 11. Mounting base; 12. Metal head; 13. Sliding scraper; 14. Spring; 15. First connecting wire; 2. Socket; 21. Base; 22. Guide groove; 23. Second connecting wire; 3. Annular rubber ring; 4. Protective cover; 5. Magnet block. Detailed Implementation

[0026] The embodiments of this utility model application will be described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model application, but should not be used to limit the scope of this utility model application. All other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model application.

[0027] Combination Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 7 As shown, a stackable energy storage device battery pack plug-in structure that is easy to expand includes a plug 1 and a socket 2. The plug 1 has a fixing base 11, a metal head 12 is provided at the front end of the fixing base 11, and sliding scrapers 13 are provided on both sides of the metal head 12. A spring 14 is provided between the bottom of the sliding scraper 13 and the fixing base 11. A first connecting line 15 is connected to the rear end of the fixing base 11. The socket 2 has a base 21, a guide groove 22 that matches the sliding scraper 13 is provided at the front end of the base 21, and a second connecting line 23 is connected to the rear end of the base 21.

[0028] This invention proposes a stackable battery pack plug-in structure for easily expandable energy storage devices. The mounting base 11 is the main body of the plug 1, used to support and fix other components. The metal head 12 is located at the front end of the mounting base 11 and is the key part for electrical connection between the plug 1 and the socket 2.

[0029] The sliding scraper 13 is disposed on both sides of the metal head 12 and is used to scrape off any oxide layer or dirt that may be present inside the socket 2 when the plug 1 is inserted into the socket 2, ensuring good electrical contact. The spring 14 is connected between the bottom of the sliding scraper 13 and the fixed base 11, providing elastic support for the sliding scraper 13 so that it can maintain close contact with the socket 2 during insertion.

[0030] The first connecting wire 15 is connected to the rear end of the mounting base 11 and is used to electrically connect the plug 1 to the battery pack or other electrical components.

[0031] The base 21 is the main body of the socket 2, used to support and secure other components. A guide groove 22 is located at the front end of the base 21 and matches the sliding scraper 13 on the plug 1, guiding the plug 1 into the socket 2 correctly and ensuring the sliding scraper 13 can smoothly remove oxide layers or dirt. A second connecting wire 23 is connected to the rear end of the base 21 for electrically connecting the socket 2 to the battery pack management system or other electrical components.

[0032] When plug 1 needs to be inserted into socket 2, the user aligns plug 1 with socket 2 and applies a certain force to insert it. During insertion, the sliding scraper 13 on plug 1 first enters the guide groove 22 of socket 2. Due to the elastic support of spring 14, the sliding scraper 13 can conform to the inner wall of guide groove 22 and scrape off any oxide layer or dirt that may be present during insertion.

[0033] As plug 1 continues to be inserted, the metal head 12 gradually makes contact with the electrical contact points inside socket 2, forming an electrical connection. At this time, the first connecting wire 15 and the second connecting wire 23 respectively connect plug 1 and socket 2 to the battery pack or other electrical components, realizing the transmission of electrical energy.

[0034] When it is necessary to unplug plug 1, the user applies the opposite force to pull plug 1 out of socket 2. During the unplugging process, the sliding scraper 13 scrapes away the oxide layer or dirt inside socket 2 again, preparing it for the next insertion.

[0035] This plug-in design makes it easy and quick to expand and replace the battery pack, while ensuring the reliability and stability of the electrical connection.

[0036] Combination Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the outer periphery of the fixing base 11 and the base 21 is covered with a silicone shell, and an annular rubber ring 3 is provided on the contact surface of the fixing base 11 and the base 21.

[0037] Specifically, a silicone shell covers the outer periphery of the mounting base 11 and the base 21. The silicone material possesses excellent flexibility, wear resistance, and aging resistance, providing effective physical protection for the mounting base 11 and the base 21, preventing them from being directly impacted and worn by the external environment. Simultaneously, the silicone shell also has a certain degree of waterproof and dustproof function, preventing moisture and dust from entering the interior of the mounting base 11 and the base 21 to a certain extent, protecting the internal electrical components from damage.

[0038] An annular rubber ring 3 is disposed on the contact surface of the fixing base 11 and the base 21. When the plug 1 is inserted into the socket 2, the fixing base 11 and the base 21 will fit together, at which time the annular rubber ring 3 is compressed between them, forming a sealing barrier. The annular rubber ring 3 is usually made of highly elastic and wear-resistant rubber material, which can ensure stable sealing performance during the connection of the plug 1 and the socket 2.

[0039] The silicone outer shell, acting as the first protective layer, directly wraps around the outer perimeter of the mounting base 11 and the base 21, effectively isolating the internal electrical components from potential threats from the external environment. During the use of the battery pack, the silicone outer shell absorbs some of the impact force, reducing damage to internal components caused by vibration or collision. Simultaneously, the waterproof and dustproof properties of the silicone outer shell extend the battery pack's lifespan and improve its reliability. When the plug 1 is inserted into the socket 2, the annular rubber ring 3 is compressed onto the contact surfaces of the mounting base 11 and the base 21, filling the tiny gap between them and forming an effective seal. This sealing design prevents moisture, dust, and other impurities from entering the connection between the plug 1 and the socket 2, thus avoiding electrical short circuits or poor contact caused by impurities. The high elasticity of the annular rubber ring 3 ensures that it maintains good sealing performance even after repeated insertions and removals of the plug 1 and the socket 2, improving the stability and reliability of the entire connection structure.

[0040] Combination Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, a protective cover 4 is provided on the outer periphery of the front end of the fixed base 11. The protective cover 4 is arranged around the metal head 12 and slides and matches the outer periphery of the base 21.

[0041] Specifically, the protective cover 4 is located on the outer periphery of the front end of the fixing base 11 and is arranged around the metal head 12. This allows the protective cover 4 to directly protect the metal head 12, preventing it from being damaged by collisions, scratches, or other external objects when it is not inserted into the socket 2.

[0042] The protective cover 4 slides and matches the outer periphery of the base 21. The inner diameter and shape of the protective cover 4 are designed to allow it to slide smoothly along the outer periphery of the base 21 during the insertion of the plug 1 into the socket 2. This not only ensures the smoothness of the plug-socket connection but also provides a guiding function, ensuring that the plug 1 can be accurately inserted into the socket 2. The base 21, as the main body of the socket 2, has its front end engaging with the fixing seat 11 of the plug 1 to achieve electrical connection, while its outer periphery slides and matches the protective cover 4.

[0043] Combination Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a buckle is provided on one side of the plug 1, and a slot matching the buckle is provided on one side of the socket 2.

[0044] Specifically, a latch is provided on one side of plug 1. The latch is typically made of a material with a certain degree of elasticity and strength, such as plastic or metal. Its shape is generally convex, and may have a slight bevel or curvature to facilitate engagement with the slot during insertion and removal. One end of the latch is fixed to the side wall of plug 1, while the other end is free, allowing for a certain degree of elastic deformation under external force. On one side of socket 2, a slot is provided that matches the latch on plug 1. The shape and size of the slot correspond to the latch, and it is usually recessed, with enough internal space to accommodate the latch. The edges of the slot may be chamfered or rounded to facilitate smooth insertion and removal of the latch.

[0045] In the locked state, the latch and slot fit tightly together, fixing the relative positions of plug 1 and socket 2. This not only enhances the reliability of the connection between plug 1 and socket 2 but also allows it to withstand certain vibrations and pulling forces, ensuring that plug 1 and socket 2 will not disconnect due to shaking or accidental pulling during the use of the energy storage device, thus guaranteeing the continuity and safety of power transmission.

[0046] When it is necessary to unplug plug 1, the user needs to apply a certain amount of external force. Due to the engagement between the latch and the slot, direct pulling will encounter significant resistance. At this time, the user can press the latch or use other specific methods to cause the latch to elastically deform again and disengage from the slot. Once the latch is fully disengaged from the slot, the mechanical lock between plug 1 and socket 2 is released, and the user can easily pull plug 1 out of socket 2.

[0047] Combination Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, magnet blocks 5 are provided on the contact surfaces of the fixing base 11 and the base 21.

[0048] Specifically, a magnet 5 is provided on the contact surface between the fixing base 11 and the base 21. The magnet 5 can be fixed to the contact surface of the fixing base 11 by means of embedding, gluing, etc., to ensure that its position is stable and will not shift during the use of the plug 1.

[0049] A magnet 5 is also provided on the contact surface between the base 21 and the fixing seat 11. The magnet 5 is fixed in a similar way to the magnet 5 on the fixing seat 11 to ensure that it is firmly attached to the base 21.

[0050] Magnet block 5 is a key component for achieving the magnetic connection between plug 1 and socket 2. It is typically made of a strong permanent magnet material, such as neodymium iron boron magnets. The shape and size of magnet block 5 can be designed according to the contact surface size of fixing base 11 and base 21, as well as the required magnetic force. Common shapes include round and square.

[0051] Combination Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the space between the fixing base 11 and the base 21 and the silicone shell is filled with hydrophobic gel.

[0052] Specifically, the silicone shell covers the outer periphery of the fixing base 11 and the base 21, serving to protect the internal structure, provide some cushioning, and offer preliminary waterproofing and dustproofing. The silicone shell is not tightly fitted to the fixing base 11 and the base 21; gaps are left. Hydrophobic gel fills these gaps between the fixing base 11 and the base 21 and the silicone shell. Hydrophobic gel is a material with special properties, exhibiting good flexibility, adhesion, and hydrophobicity. Its texture is typically soft, allowing it to adapt to dimensional changes caused by thermal expansion and contraction or slight deformation between the fixing base 11, the base 21, and the silicone shell.

[0053] The hydrophobic gel possesses excellent hydrophobic properties. When moisture (such as rainwater or humidity) comes into contact with the surface of the silicone shell, it is difficult for the moisture to penetrate through the hydrophobic gel layer and enter the interior of the mounting base 11 and the base 21. This is because the molecular structure of the hydrophobic gel surface makes it difficult for water molecules to adhere to and diffuse on its surface, thus forming an effective waterproof barrier. Even if a small amount of moisture enters the contact surface between the silicone shell and the hydrophobic gel, the hydrophobic gel can block the moisture from further contacting the electrical components on the mounting base 11 and the base 21, avoiding electrical faults such as short circuits and corrosion caused by moisture, and ensuring the electrical performance and safety of the plug 1 and the socket 2.

[0054] Combination Figure 2 , Figure 3 , Figure 5 and Figure 7 As shown, the outer side of the sliding scraper 13 is impregnated with molybdenum disulfide.

[0055] Specifically, a layer of molybdenum disulfide is deposited on the outer surface of the sliding scraper 13 through an impregnation process. The impregnation process involves immersing the sliding scraper 13 in a solution or suspension containing molybdenum disulfide, allowing the molybdenum disulfide to adhere evenly to the scraper surface. After drying and curing, the molybdenum disulfide is firmly bonded to the scraper. Molybdenum disulfide is a solid lubricant with excellent lubricating properties, existing on the outer surface of the sliding scraper 13 in the form of fine particles or a coating. When the sliding scraper 13 slides on the surface of a related component, the molybdenum disulfide impregnated on its outer surface provides good lubrication. The molecular structure of molybdenum disulfide gives it a low coefficient of friction, enabling it to form a lubricating film between the scraper and the contact surface, reducing friction between them.

[0056] During the insertion of plug 1 and socket 2, the sliding scraper 13 may slide relative to the metal contact surface of plug 1 or socket 2. The presence of the molybdenum disulfide lubricating film makes the sliding process smoother, reduces wear between the scraper and the contact surface, and extends the service life of the scraper and related contact components.

[0057] Combination Figure 2 , Figure 3 , Figure 5 and Figure 7 As shown, the surface of the metal head 12 is coated with a nickel layer and a graphene coating.

[0058] Specifically, the nickel layer is a metallic coating applied to the surface of the metal head 12 through processes such as electroplating. Nickel has excellent corrosion resistance and can form a dense protective film on the surface of the metal head 12, preventing the base metal of the metal head 12 (such as copper) from reacting with oxygen, moisture, and chemicals in the external environment, thus protecting the base metal of the metal head 12. The nickel layer also has a certain degree of hardness and wear resistance, which can enhance the wear resistance of the surface of the metal head 12, reduce wear caused by friction during the insertion and removal of the plug 1 and socket 2, and extend the service life of the metal head 12. A graphene coating is applied on top of the nickel layer. Graphene is a two-dimensional material composed of carbon atoms with excellent electrical conductivity, thermal conductivity, and lubricity. The graphene coating can further improve the electrical conductivity of the surface of the metal head 12, reduce contact resistance, reduce energy loss during electrical connection, and improve power transmission efficiency.

[0059] The above embodiments only illustrate one or more implementation methods of this utility model application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model application, and these all fall within the protection scope of this utility model application. Therefore, the protection scope of this utility model application should be determined by the appended claims.

Claims

1. A scalable stacked energy storage device battery pack plug-in structure, comprising a plug (1) and a socket (2), characterized in that, The plug (1) has a fixed base (11), a metal head (12) is provided at the front end of the fixed base (11), and sliding scrapers (13) are provided on both sides of the metal head (12). A spring (14) is provided between the bottom of the sliding scraper (13) and the fixed base (11). A first connecting line (15) is connected to the rear end of the fixed base (11). The socket (2) has a base (21), a guide groove (22) matching the sliding scraper (13) is provided at the front end of the base (21), and a second connecting line (23) is connected to the rear end of the base (21).

2. The easily expandable stacked energy storage device battery pack plug-in structure according to claim 1, characterized in that, The outer periphery of the fixing seat (11) and the base (21) is covered with a silicone shell, and an annular rubber ring (3) is provided on the contact surface of the fixing seat (11) and the base (21).

3. A stackable energy storage device battery pack plug-in structure for easy expansion according to claim 1 or 2, characterized in that, A protective cover (4) is provided on the outer periphery of the front end of the fixed base (11). The protective cover (4) is arranged around the metal head (12) and slides and matches the outer periphery of the base (21).

4. The easily expandable stacked energy storage device battery pack plug-in structure according to claim 3, characterized in that, The plug (1) has a buckle on one side, and the socket (2) has a slot that matches the buckle on one side.

5. The easily expandable stacked energy storage device battery pack plug-in structure according to claim 4, characterized in that, Magnet blocks (5) are provided on the contact surfaces of the fixing base (11) and the base (21).

6. The easily expandable stacked energy storage device battery pack plug-in structure according to claim 5, characterized in that, The space between the mounting base (11) and the base (21) and the silicone shell is filled with hydrophobic gel.

7. The easily expandable stacked energy storage device battery pack plug-in structure according to claim 6, characterized in that, The outer side of the sliding scraper (13) is impregnated with molybdenum disulfide.

8. The easily expandable stacked energy storage device battery pack plug-in structure according to claim 7, characterized in that, The surface of the metal head (12) is coated with a nickel layer and a graphene coating.

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