A charging hole for lithium battery

Abstract

The utility model relates to a charging hole for lithium battery. The technical problem that the utility model wants to solve is to provide a charging hole for lithium battery. The utility model adopts the technical scheme: including charging hole seat body, charging hole contact pin, charging hole interlock assembly and seat body side cover, the charging hole seat body includes seat body plug -in part and seat body side butt joint part, is equipped with seat body plug -in cavity in seat body plug -in part, is equipped with contact pin fixed hole in seat body plug -in cavity bottom, is equipped with seat body side cavity in seat body side butt joint part, is equipped with seat body communication port in seat body side cavity side department, the charging hole interlock assembly includes push block, pre -tight spring, first contact pin subassembly and second contact pin subassembly. The utility model has the advantages that: charging hole contact pin is two hole design, improves charging speed and reduces heat generation, has interlock protection function, improves charging safety, guarantees that lithium battery stops power supply during charging, prevents the phenomenon of charging and discharging simultaneously, improves use safety.

Description

Technical Field

[0001] This utility model relates to a charging port for lithium batteries. Background Technology

[0002] With the rapid popularization of electrification across various vehicle platforms, the power supply interface system of auxiliary equipment is also constantly developing towards higher safety, higher compatibility, and lower risk. This is especially true in the field of light mobile vehicles, such as children's electric toy cars, mini electric vehicles, and mobile cleaning robots. Since the users are generally minors or non-professional operators, the safety and reliability of their power supply devices (especially lithium battery charging interfaces) are particularly important.

[0003] Currently, lithium batteries are widely used as the main power source in these types of light vehicles or auxiliary mobile devices. Charging is typically done through a DC charging port installed on the exterior of the vehicle, which users can connect using a compatible charging plug. However, most traditional charging port structures are single-pin plug designs, which have several significant drawbacks:

[0004] The single-hole structure has limited current carrying capacity, which cannot meet the demand for high-power fast charging. It has low charging efficiency and is even prone to overheating and aging under continuous charging conditions.

[0005] The lack of an "interlock mechanism" with the vehicle's electrical system means that the battery may continue to supply power to the electric mechanism during charging, creating a dangerous situation of charging and using simultaneously. Utility Model Content

[0006] To solve the above problems, the technical problem to be solved by this utility model is to provide a charging port for lithium batteries.

[0007] The technical solution adopted by this utility model for a charging port for lithium batteries includes a charging port base and a charging port pin. Its characteristic is that it further includes a charging port interlocking assembly and a base side cover. The charging port base includes a base insertion part and a base side docking part located on the side of the base insertion part. The base insertion part has a base insertion cavity, and the bottom of the base insertion cavity has a pin fixing hole for the charging port pin to pass through. The base side docking part has a base side cavity for installing the charging port interlocking assembly, and the side of the base side cavity has a base communication port communicating with the base insertion cavity. The charging port interlocking assembly includes... The device comprises a push block, a preload spring, a first contact assembly, and a second contact assembly. The side cover of the seat body is provided outside the mating portion of the seat body. The side cavity of the seat body has an insertion port for inserting the first contact assembly. The rear end of the push block contacts the upper end of the second contact assembly. One end of the preload spring abuts against the upper end of the second contact assembly, and the other end abuts against the inner wall of the side cover of the seat body. The push block moves horizontally within the communication port of the seat body, causing the second contact assembly to move horizontally. The first contact assembly and the second contact assembly are initially in a normally closed connection.

[0008] The side wall of the socket is provided with an anti-misinsertion indicator block, and the anti-misinsertion indicator block is provided with the socket communication port.

[0009] The front end of the push block is provided with a push block inclined guide surface to facilitate the insertion of the plug, the upper end of the push block is provided with a push block limiting protrusion, and the upper wall of the seat body communication port is provided with a seat body upper limit groove for limiting the push block limiting protrusion.

[0010] The first contact assembly includes a first contact plate inserted into the socket of the base body and a first contact point disposed on the first contact plate. The second contact assembly includes a second contact plate and a second contact point. The second contact plate includes a second contact plate outer portion formed by bending in sequence, a second contact plate contact portion disposed parallel to the second contact plate outer portion, and a second contact plate driving portion disposed parallel to the second contact plate contact portion and abutting against the rear end of the push block. The second contact plate outer portion is disposed parallel to the first contact plate. One end of the preload spring abuts against the second contact plate driving portion. The first contact point and the second contact point are in contact with each other.

[0011] The first contact plate is provided with a first contact plate notch, and the first contact plate is bent at the first contact plate notch to form a first contact plate anti-retraction foot. The bottom of the seat side docking part is provided with a seat anti-retraction groove corresponding to the first contact plate anti-retraction foot at the seat body insertion port.

[0012] The upper end of the outer part of the second touch plate is provided with second touch plate guide protrusions on both sides. The side wall of the seat cavity is provided with a side cavity guide groove for the horizontal movement of the second touch plate guide protrusion. The bottom of the seat cavity is provided with a side cavity clearance opening for the second touch plate outer part to make way when it moves horizontally.

[0013] The front and rear outer walls of the seat body side docking part are provided with seat body locking blocks, and the seat body side cover is provided with side cover slots for locking the seat body locking blocks.

[0014] The number of charging port pins is 2.

[0015] The base is provided with a base mounting platform outside the base insertion part, and the base mounting platform is provided with base mounting holes.

[0016] The advantages of this utility model for a lithium battery charging port are as follows: the charging port pins have a dual-hole design, which is compatible with the bipolar power supply setting of lithium batteries, improving the charging speed and reducing heat generation; it has an interlock protection function, which improves charging safety, ensures that the lithium battery stops supplying power during charging, prevents the phenomenon of charging and discharging simultaneously, and improves the safety of use; the multiple guiding and limiting structures improve the component installation accuracy and working stability. Attached Figure Description

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] Figure 1 This is a schematic diagram of the structure of the charging port for lithium batteries according to this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the charging port seat of this utility model;

[0020] Figure 3 This is another structural schematic diagram of the charging port seat of this utility model;

[0021] Figure 4 This is a schematic diagram of the charging port interlock assembly of this utility model;

[0022] Figure 5 This is a schematic diagram of the pusher block of this utility model;

[0023] Figure 6 This is a half-sectional view of the charging port for lithium batteries according to this utility model;

[0024] Figure 7 This is a schematic diagram of the structure of the second contactor assembly of this utility model;

[0025] Figure 8 This is a schematic diagram of the structure of the first contactor assembly of this utility model;

[0026] Figure 9 This is a schematic diagram of the structure of the side cover of the seat of this utility model. Detailed Implementation

[0027] like Figure 1-9As shown, the lithium battery charging port of this utility model includes a charging port base 1, a charging port pin 2, a charging port interlocking assembly 3, and a base side cover 4. The charging port base 1 includes a base insertion part 6 and a base side docking part 17 provided on the side of the base insertion part 6. The base insertion part 6 has a base insertion cavity 7. The bottom of the base insertion cavity 7 has a pin fixing hole 8 for the charging port pin 2 to pass through. The base side docking part 17 has a base side cavity 18 for the installation of the charging port interlocking assembly 3. The side of the base side cavity 18 has a base communication port 10 communicating with the base insertion cavity 7. The charging port interlocking assembly 3 includes... The device comprises a push block 12, a pre-tension spring 13, a first contact assembly 14, and a second contact assembly 15. A side cover 4 covers the side docking portion 17 of the seat body. An internal insertion port 19 for inserting the first contact assembly 14 is provided within the side cavity 18 of the seat body. The rear end of the push block 12 contacts the upper end of the second contact assembly 15. One end of the pre-tension spring 13 abuts against the upper end of the second contact assembly 15, and the other end abuts against the inner wall of the side cover 4. The push block 12 moves horizontally within the seat body connection port 10, causing the second contact assembly 15 to move horizontally. Initially, the first contact assembly 14 and the second contact assembly 15 are normally closed. When the plug is inserted, the push block 12 is pushed to move horizontally along the seat body connection port 10, causing the second contact assembly 15 to move, thereby disconnecting the first contact 30 from the second contact 27. This disconnects the external power supply circuit of the lithium battery, ensuring that the lithium battery stops supplying power during charging, preventing simultaneous charging and discharging, and improving safety. This is especially suitable for scenarios with high safety requirements, such as children's toy cars.

[0028] The side wall of the socket cavity 7 is provided with an anti-misinsertion indicator block 9, and the anti-misinsertion indicator block 9 is provided with the socket communication port 10, which effectively prevents short circuits or poor contact caused by reverse or incorrect plug insertion, and improves the user-friendliness and electrical safety.

[0029] The front end of the push block 12 is provided with a push block inclined guide surface 21 to facilitate the insertion of the plug. The upper end of the push block 12 is provided with a push block limiting protrusion 22. The upper wall of the seat body communication port 10 is provided with a seat body upper limit groove 23 for limiting the push block limiting protrusion 22, so as to ensure clear guidance, low friction and reliable operation during the movement.

[0030] The first contact assembly 14 includes a first contact plate 29 inserted into the socket 19 of the base body and a first contact point 30 disposed on the first contact plate 29. The second contact assembly 15 includes a second contact plate and a second contact point 27. The second contact plate includes a second contact plate outer portion 24 bent in sequence, a second contact plate contact portion 25 disposed parallel to the second contact plate outer portion 24, and a second contact plate driving portion 26 disposed parallel to the second contact plate contact portion 25 and abutting against the rear end of the push block 12. The second contact plate outer portion 24 is disposed parallel to the first contact plate 29. One end of the preload spring 13 abuts against the second contact plate driving portion 26. The first contact point 30 and the second contact point 27 are in contact with each other to ensure stable and reliable operation.

[0031] The first contact plate 29 is provided with a first contact plate notch 31. The first contact plate 29 is bent at the first contact plate notch 31 to form a first contact plate anti-retraction foot 32. The bottom of the seat side docking part 17 is provided with a seat anti-retraction groove 33 corresponding to the first contact plate anti-retraction foot 32 at the seat body insertion port 19. The installation is quick, firm and reliable.

[0032] The upper end of the second touch plate outer part 24 is provided with second touch plate guide protrusions 35 on both sides. The side wall of the seat body side cavity 18 is provided with a side cavity guide groove 36 for the horizontal movement of the second touch plate guide protrusions 35. The bottom of the seat body side cavity 18 is provided with a side cavity clearance opening 37 for the second touch plate outer part 24 to make way when it moves horizontally.

[0033] The seat body side docking part 17 is provided with a seat body locking block 40 on the front and rear outer walls, and the seat body side cover 4 is provided with a side cover slot 41 for locking the seat body locking block 40. It can be detached and installed for easy subsequent maintenance.

[0034] The number of charging port pins 2 is two, which has higher conductivity and current carrying capacity compared with traditional single-port chargers, thus improving charging speed and reducing heat generation.

[0035] The seat insertion part 6 is provided with a seat mounting platform 45, and the seat mounting platform 45 is provided with a seat mounting hole 46, which makes installation convenient and connection reliable.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model are included within the protection scope of the present utility model.

Claims

1. A charging port for a lithium battery, comprising a charging port base (1) and a charging port pin (2), characterized in that: It also includes a charging port interlock assembly (3) and a seat side cover (4). The charging port seat (1) includes a seat insertion part (6) and a seat side docking part (17) provided on the side of the seat insertion part (6). The seat insertion part (6) is provided with a seat insertion cavity (7). The bottom of the seat insertion cavity (7) is provided with a pin fixing hole (8) for the charging port pin (2) to pass through. The seat side docking part (17) is provided with a seat side cavity (18) for the installation of the charging port interlock assembly (3). The side of the seat side cavity (18) is provided with a seat communication port (10) communicating with the seat insertion cavity (7). The charging port interlock assembly (3) includes a push block (12), a preload spring (13), and a first A first contact assembly (14) and a second contact assembly (15) are provided. The seat side cover (4) covers the seat side docking part (17). The seat side cavity (18) is provided with a seat internal insertion port (19) for inserting the first contact assembly (14). The rear end of the push block (12) contacts the upper end of the second contact assembly (15). One end of the pre-tightening spring (13) abuts against the upper end of the second contact assembly (15) and the other end abuts against the inner wall of the seat side cover (4). The push block (12) moves horizontally in the seat communication port (10) to drive the second contact assembly (15) to move horizontally. The first contact assembly (14) and the second contact assembly (15) are initially in a normally closed connection.

2. The charging port for a lithium battery according to claim 1, characterized in that: The side wall of the seat insertion cavity (7) is provided with an anti-misinsertion indicator block (9), and the anti-misinsertion indicator block (9) is provided with the seat communication port (10).

3. The charging port for a lithium battery according to claim 1, characterized in that: The front end of the push block (12) is provided with a push block inclined guide surface (21) to facilitate the insertion of the plug. The upper end of the push block (12) is provided with a push block limiting protrusion (22). The upper wall of the seat body connecting port (10) is provided with a seat body upper limit groove (23) for limiting the push block limiting protrusion (22).

4. The charging port for a lithium battery according to claim 1, characterized in that: The first contact assembly (14) includes a first contact plate (29) inserted into the socket (19) of the seat body and a first contact point (30) provided on the first contact plate (29). The second contact assembly (15) includes a second contact plate and a second contact point (27). The second contact plate includes a second contact plate outer part (24) bent in sequence, a second contact plate contact part (25) arranged parallel to the second contact plate outer part (24), and a second contact plate driving part (26) parallel to the second contact plate contact part (25) and abutting against the rear end of the push block (12). The second contact plate outer part (24) is arranged parallel to the first contact plate (29). One end of the preload spring (13) abuts against the second contact plate driving part (26). The first contact point (30) and the second contact point (27) are in contact with each other.

5. The charging port for a lithium battery according to claim 4, characterized in that: The first contact plate (29) is provided with a first contact plate notch (31), and the first contact plate (29) is bent at the first contact plate notch (31) to form a first contact plate anti-retraction foot (32). The bottom of the seat side docking part (17) is provided with a seat anti-retraction groove (33) corresponding to the first contact plate anti-retraction foot (32) at the seat body insertion port (19).

6. The charging port for a lithium battery according to claim 4, characterized in that: The upper end of the second touch plate outer part (24) is provided with second touch plate guide protrusions (35) on both sides. The side wall of the seat cavity (18) is provided with a side cavity guide groove (36) for the second touch plate guide protrusion (35) to move horizontally. The bottom of the seat cavity (18) is provided with a side cavity clearance opening (37) for the second touch plate outer part (24) to make way when moving horizontally.

7. The charging port for a lithium battery according to claim 1, characterized in that: The seat side docking part (17) is provided with a seat block (40) on the front and rear outer walls, and the seat side cover (4) is provided with a side cover slot (41) for engaging the seat block (40).

8. The charging port for a lithium battery according to claim 1, characterized in that: The number of charging port pins (2) is 2.

9. The charging port for a lithium battery according to claim 1, characterized in that: The seat insertion part (6) is provided with a seat mounting platform (45), and the seat mounting platform (45) is provided with a seat mounting hole (46).

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