A quick plug-in lithium battery charger connector assembly
By combining a limiting groove, socket, telescopic sleeve, and pressure spring, the problem of anti-disengagement locking in traditional lithium battery charger connector assemblies is solved, achieving stable connection of the connector and ensuring that the live contacts are exposed in case of vibration or collision, thus improving the stability and safety of the charging process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI DPOWER ELECTRONIC CO LTD
- Filing Date
- 2025-07-23
- Publication Date
- 2026-07-21
AI Technical Summary
Traditional lithium battery charger connector assemblies lack anti-detachment locking effects, causing the connectors to detach during charging due to vibration, pulling, or collisions. This poses a safety hazard, especially in outdoor or humid environments where live contacts are exposed.
A quick-plug lithium battery charger connector assembly was designed. Through the combination of a limiting groove, a socket, a telescopic sleeve, and first and second pressure springs, the plug and socket are locked together to ensure a stable connection under vibration or impact.
It effectively prevents the charger connector from falling off under vibration or impact, ensuring the stability and safety of the charging process, avoiding exposure of live contacts, and is suitable for outdoor use.
Smart Images

Figure CN224537516U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of charger connector assemblies, specifically to a quick-plug lithium battery charger connector assembly. Background Technology
[0002] The lithium battery charger connector assembly is a key component in a lithium battery charging system used to connect the charger and the battery. Its core function is to realize power transmission and interface adaptation, ensuring a safe and efficient charging process.
[0003] A search revealed a utility model connector interface assembly for an electric vehicle charger, with announcement number CN216488655U. The connector includes a first base and multiple pins positioned on the first base. The interface includes a second base and multiple terminals positioned on the second base for holding the pins. The second base has a slot that matches the outer contour of the first base. The length of the multiple terminals inserted into the slot is less than the height of the slot. The first base has a receiving groove, and the length of the multiple pins located in the receiving groove is less than the height of the receiving groove. The slot has a partition block that matches the receiving groove. The portions of the multiple terminals inserted into the slot are all located within the partition block. This design solves the problem of low safety due to short circuits in the prior art.
[0004] Traditional lithium battery charger connector assemblies are mostly quick-plug type, but lack anti-disengagement locking effect. As a result, the connector may fall off due to vibration, pulling or collision during charging, causing the connector to suddenly disconnect during charging. At the same time, the connector may fall off in outdoor or humid environments, exposing live contacts. The connector interface assembly of the electric vehicle charger in the above comparison case also lacks a relevant anti-disengagement locking structure, which can easily cause it to loosen.
[0005] Therefore, it is necessary to invent a quick-plug lithium battery charger connector assembly to solve the above problems. Utility Model Content
[0006] The purpose of this invention is to provide a quick-plug lithium battery charger connector assembly. By pushing the telescopic sleeve outside the socket, the limiting blocks on both sides inside the socket are extended and retracted by the second pressure spring. Then, one end of the charger connector body is inserted into the socket's internal hole. Next, the telescopic sleeve is released, and multiple sets of first pressure springs on the rear side push the telescopic sleeve to extend and retract, squeezing and pushing the limiting blocks to extend and retract inside the socket, inserting the limiting blocks into the limiting grooves on both sides of the charger connector body, thereby completing the locking. This solves the problem mentioned in the background art that most traditional lithium battery charger connector assemblies are quick-plug type, but lack anti-dislodgement locking effect, which leads to the connector falling off during charging due to vibration, pulling or collision, causing the connector to suddenly disconnect during charging. At the same time, the connector may fall off in outdoor or humid environments, exposing live contacts.
[0007] To achieve the above objectives, this utility model provides the following technical solution: a quick-plug lithium battery charger connector assembly, comprising a charger connector body;
[0008] Limiting grooves are provided on both sides of the charger connector body to lock the charger connector body. The charger connector body is fitted with a socket on the outside. The socket has a hole inside. A fixing seat is fixedly connected to the rear side of the socket. A telescopic sleeve is slidably connected inside the fixing seat. A first pressure spring is fixedly provided on both sides inside the fixing seat.
[0009] A limiting block is movably disposed on both sides inside the socket. A connecting block is fixedly connected to the lower side of the limiting block, and a second pressure spring is fixedly connected to the outer side of the connecting block.
[0010] Preferably, a dust cover is movably disposed above the socket, a connecting shaft is movably disposed between the dust cover and the top of the socket, a torsion spring is sleeved on the outside of the connecting shaft, and the socket is rotatably connected to the dust cover.
[0011] Preferably, the telescopic sleeve is fixedly connected to the rear two sides with sliders, and the fixed seat has sliding grooves on both sides inside, so that the telescopic sleeve is slidably connected to the fixed seat.
[0012] Preferably, the first pressure spring is located inside the slide groove, and the front end of the first pressure spring is fixedly connected to the slider on the rear side of the telescopic sleeve.
[0013] Preferably, the outer side of the limiting block is set at an angle, and the limiting block is slidably connected to both sides inside the socket.
[0014] Preferably, the limiting block that is slidably connected inside the socket is movably engaged with the limiting grooves on both sides of the outside of the charger connector body, and the limiting block and the limiting groove are used in conjunction.
[0015] The technical effects and advantages provided by this utility model in the above technical solution are as follows:
[0016] This invention strengthens the connection between the charger connector body and the socket by incorporating a charger connector body, limiting grooves, a socket, a telescopic sleeve, a first pressure spring, limiting blocks, and a second pressure spring, preventing loosening. By pushing the telescopic sleeve outside the socket, the limiting blocks on both sides inside the socket spring back and extend. Then, one end of the charger connector body is inserted into the socket's internal hole. Next, the telescopic sleeve is released, and the multiple sets of first pressure springs on the rear push the telescopic sleeve to extend and retract, compressing and pushing the limiting blocks to extend and retract inside the socket, inserting the limiting blocks into the limiting grooves on both sides of the charger connector body, thus completing the locking process. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the charger connector body and socket structure of this utility model;
[0020] Figure 3 This is a schematic diagram of the dust cover structure of this utility model;
[0021] Figure 4 This is a schematic diagram of the telescopic sleeve structure of this utility model;
[0022] Figure 5 This is a cross-sectional view of the socket structure of this utility model;
[0023] Figure 6 For the present utility model Figure 4 Enlarged view of the structure at point A in the middle.
[0024] Explanation of reference numerals in the attached figures:
[0025] 1. Charger connector body; 2. Limiting groove; 3. Socket; 4. Socket hole; 5. Dust cover; 6. Connecting shaft; 7. Torsion spring; 8. Fixing base; 9. Telescopic sleeve; 10. Slider; 11. Slide groove; 12. First pressure spring; 13. Limiting block; 14. Connecting block; 15. Second pressure spring. Detailed Implementation
[0026] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.
[0027] This utility model provides, for example Figure 1-6 The fast plug-in lithium battery charger connector assembly shown includes a charger connector body 1;
[0028] Limiting grooves 2 are provided on both sides of the charger connector body 1 to lock the charger connector body 1. A socket 3 is sleeved on the outside of the charger connector body 1. A socket hole 4 is provided inside the socket 3. A fixed seat 8 is fixedly connected to the rear side of the socket 3. A telescopic sleeve 9 is slidably connected inside the fixed seat 8. A first pressure spring 12 is fixedly provided on both sides inside the fixed seat 8.
[0029] Limiting blocks 13 are movably disposed on both sides inside the socket 3. A connecting block 14 is fixedly connected to the lower side of the limiting blocks 13, and a second pressure spring 15 is fixedly connected to the outer side of the connecting block 14. By pushing the telescopic sleeve 9 outside the socket 3, the limiting blocks 13 on both sides inside the socket 3 are pushed back and extended by the second pressure spring 15. Then, one end of the charger connector body 1 is inserted into the socket hole 4 inside the socket 3. Then, the telescopic sleeve 9 is released and pushed back by multiple sets of first pressure springs 12 on the rear side, so that the telescopic sleeve 9 moves and pushes the limiting blocks 13 to move and extend inside the socket 3, inserting the limiting blocks 13 into the limiting grooves 2 on both sides of the charger connector body 1, thereby completing the locking.
[0030] like Figure 1 and Figure 3 As shown, a dust cover 5 is movably installed above the socket 3, and a connecting shaft 6 is movably installed between the dust cover 5 and the top of the socket 3. A torsion spring 7 is sleeved on the outside of the connecting shaft 6. The socket 3 and the dust cover 5 are rotatably connected. Through the rebound action of the torsion spring 7, when the socket 3 is not in use, the dust cover 5 will automatically rebound and flip to cover the socket hole 4 inside the socket 3, thereby preventing daily dust from entering the interior and affecting the charging effect.
[0031] like Figure 4 and Figure 6 As shown, sliders 10 are fixedly connected to the rear two sides of the telescopic sleeve 9, and grooves 11 are opened on both sides of the interior of the fixed base 8. The telescopic sleeve 9 is slidably connected to the fixed base 8, and the telescopic sleeve 9 can move inside the fixed base 8, thereby squeezing the limiting block 13 inside the socket 3 to limit the charger connector body 1.
[0032] like Figure 4 and Figure 6 As shown, the first pressure spring 12 is located inside the slide groove 11. The front end of the first pressure spring 12 is fixedly connected to the slider 10 on the rear side of the telescopic sleeve 9. The telescopic sleeve 9, through the rebound effect of multiple sets of first pressure springs 12 on both sides of the rear, makes the first pressure spring 12 rebound and squeeze the limiting block 13 inside the socket 3 without pushing the telescopic sleeve 9, so that the limiting block 13 is inserted into the limiting grooves 2 on both sides of the charger connector body 1 for limiting and fixing.
[0033] like Figure 5 As shown, the outer side of the limiting block 13 is set at an angle, and the limiting block 13 is slidably connected to the two sides inside the socket 3. By utilizing the angled setting of the outer side of the limiting block 13, the telescopic sleeve 9 can squeeze the limiting block 13 to move telescopically within the socket 3 when it rebounds.
[0034] like Figure 2 and Figure 5As shown, the limiting block 13 inside the socket 3 is slidably connected to the limiting grooves 2 on both sides of the charger connector body 1. The limiting block 13 and the limiting grooves 2 work together. By pressing the limiting block 13 with the telescopic sleeve 9, the limiting block 13 is inserted into the limiting grooves 2 on both sides of the charger connector body 1, thereby limiting and locking the charger connector body 1 and strengthening the connection between the charger connector body 1 and the socket 3.
[0035] The working principle of this utility model is as follows: First, when charging the lithium battery charger, open the dust cover 5 on top of the socket 3, then push the telescopic sleeve 9 outside the socket 3 to move backward and press the first pressure spring 12 inside the fixing base 8. This causes the limiting blocks 13 on both sides inside the socket 3 to spring back and extend out through the second pressure spring 15. Next, insert one end of the charger connector body 1 into the socket hole 4 inside the socket 3. Then, release the telescopic sleeve 9 and push it back through the multiple sets of first pressure springs 12 on the rear side. This causes the telescopic sleeve 9 to move and press the oblique angle on the outside of the limiting block 13, thus moving and extending within the socket 3. The limiting block 13 is then inserted into the limiting grooves 2 on both sides of the charger connector body 1, thus locking it in place. After that, charging can be performed normally. This completes the usage process of the quick-plug lithium battery charger connector assembly.
[0036] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.
Claims
1. A quick-plug lithium battery charger connector assembly, characterized in that: Includes the charger connector body (1); Limiting grooves (2) are provided on both sides of the charger connector body (1) to lock the charger connector body (1). The charger connector body (1) is fitted with a socket (3) on the outside. The socket (3) is provided with a plug hole (4) inside. The socket (3) is fixedly connected to a fixed seat (8) on the back side. The fixed seat (8) is slidably connected to a telescopic sleeve (9). The fixed seat (8) is fixedly provided with a first pressure spring (12) on both sides inside. The limiting block (13) is movably set on both sides inside the socket (3). A connecting block (14) is fixedly connected to the lower side of the limiting block (13), and a second pressure spring (15) is fixedly connected to the outer side of the connecting block (14).
2. The quick-plug lithium battery charger connector assembly according to claim 1, characterized in that: A dust cover (5) is movably provided above the socket (3), and a connecting shaft (6) is movably provided between the dust cover (5) and the top of the socket (3). A torsion spring (7) is sleeved on the outside of the connecting shaft (6), and the socket (3) and the dust cover (5) are rotatably connected.
3. The quick-plug lithium battery charger connector assembly according to claim 1, characterized in that: The telescopic sleeve (9) is fixedly connected to the two rear sides of the slider (10), and the fixed seat (8) has a sliding groove (11) on both sides inside. The telescopic sleeve (9) is slidably connected to the fixed seat (8).
4. The quick-plug lithium battery charger connector assembly according to claim 1, characterized in that: The first pressure spring (12) is located inside the slide groove (11), and the front end of the first pressure spring (12) is fixedly connected to the slider (10) on the rear side of the telescopic sleeve (9).
5. The quick-plug lithium battery charger connector assembly according to claim 1, characterized in that: The outer side of the limiting block (13) is set at an angle, and the limiting block (13) is slidably connected to the two sides inside the socket (3).
6. The quick-plug lithium battery charger connector assembly according to claim 1, characterized in that: The limiting block (13) inside the socket (3) is slidably connected to the limiting groove (2) on both sides of the charger connector body (1), and the limiting block (13) and the limiting groove (2) are used together.