External lithium battery charger

Abstract

The external lithium battery charger comprises a charging seat, a sliding guide seat, a fixed clamping group and a movable clamping group, the surface of the charging seat is provided with a cabin, the sliding guide seat is embedded in the inner side of the cabin, the surface of the sliding guide seat is fixedly provided with a fixed seat, and the bottom end of an adjusting seat is provided with a guide sliding block which is slidably installed on the inner side of the sliding guide seat. A voltage transformation module, a voltage stabilization module and a charging protection module are arranged on the inner side of the charging seat. According to the utility model, through the structural design of the fixed clamp group and the movable clamp group and the adoption of a modular structure of the first rotating lug, the second rotating lug, the third rotating lug and the electric shock lug, the compatibility and the flexibility of the charger in the case of different battery specifications are ensured. By means of the guide sliding blocks installed on the fixing base and the adjusting base in a sliding mode, stable clamping and electrode connection of batteries of different sizes by the charger are achieved, the problem that electrode contact is poor in the plugging and pulling process of a traditional charger is effectively solved, and therefore the stability and reliability of the charging process are improved.

Description

Technical Field

[0001] This utility model relates to the field of battery charger technology, specifically an external lithium battery charger. Background Technology

[0002] In traditional external lithium battery chargers, the charging connection typically relies on a simple electrode clamping structure. These chargers are basically designed to charge by clamping the positive and negative terminals of the battery with fixed electrodes in a fixed position. Common structures include simple spring clips, parallel metal plates, or terminals secured with screws. While this fixed electrode design can accomplish the basic charging task, it has many limitations in practical applications, especially when dealing with batteries of different sizes, often requiring manual adjustment of the clamping device. Furthermore, the simple structural design cannot adapt to the diversity of battery sizes and lacks adjustments for electrode position during charging, leading to problems with poor electrode contact during use.

[0003] However, traditional charging clamping structures have the following drawbacks when handling different battery specifications:

[0004] Lack of compatibility and flexibility: Traditional chargers mostly feature fixed electrode designs, requiring manual adjustment or even clamp replacement when encountering batteries of different sizes or with inconsistent polarity. This not only complicates operation but also reduces the efficiency of the equipment. Moreover, fixed electrodes struggle to adapt to minute dimensional changes in the battery during clamping, easily leading to poor contact during charging and affecting charging efficiency and stability.

[0005] Lack of stable electrode connections: Traditional charging clamps have simple electrode connection designs, typically secured by manual tightening or spring clips. This design often results in loosening or inadequate clamping during battery insertion and removal, leading to unstable charging current. Furthermore, traditional electrode clips lack effective insertion / removal feedback and anti-loosening designs; frequent insertion and removal can cause wear on the electrode contact surfaces, further exacerbating poor contact. These issues not only affect the safety of the charging process but may also shorten the lifespan of the battery and charging equipment.

[0006] To address the shortcomings of the existing technology, this utility model proposes an improved external lithium battery charger structure. Through modular design, flexible electrode connection, and flexible adjustment mechanism, it solves the problems of poor compatibility and poor contact in traditional charging devices, thereby improving the overall convenience and safety of use. Utility Model Content

[0007] The present invention aims to solve the technical problems existing in the prior art or related technologies.

[0008] An external lithium battery charger includes: a charging base, a sliding guide base, a fixed clamp group, and a movable clamp group. The surface of the charging base has a housing, and the sliding guide base is embedded in the inner side of the housing. A fixed seat is fixedly installed on the surface of the sliding guide base. The bottom end of the adjustable seat has a guide block that is slidably installed inside the sliding guide base. The fixed clamp group and the movable clamp group are rotatably installed inside the fixed seat and the adjustable seat, respectively. The inner side of the charging base is provided with a transformer module, a voltage regulator module, and a charging protection module. The fixed clamp group and the movable clamp group have the same structure and each includes a first rotating ear, a second rotating ear, a third rotating ear, and an electric contact ear. The number of the first rotating ear, the second rotating ear, and the third rotating ear increases and doubles sequentially. One side of each of the first rotating ear, the second rotating ear, and the third rotating ear is provided with a conductive strip. The other side of each of the first rotating ear, the second rotating ear, and the third rotating ear is provided with a conductive groove and an electrode latching groove. Both sides of the electric contact ear are provided with electrode latching ears for engaging with the electrode latching groove and the conductive groove.

[0009] By adopting the above technical solution, and through the sequentially increasing multiple sets of structures—the first, second, and third rotating ears—in this design, combined with the flexible snap-fit ​​of the contact ears, a stable connection and insertion during charging are ensured. The sliding adjustment of the guide seat allows for a charger design that adapts to different battery specifications, enhancing the applicability and stability of the device.

[0010] In a preferred embodiment, this utility model can be further configured such that: the bottom surface of the charging base is provided with an electrode plug for connecting to a 110-220V power supply; the surface of the charging base is provided with an indicator light electrically connected to the charging protection module for displaying the charging progress. By adopting the above technical solution, direct connection to a household power supply is achieved through the electrode plug on the bottom surface of the charging base, and the indicator light provides a clear display of the charging progress, allowing users to easily monitor the charging status in real time and improving the user experience.

[0011] In a preferred embodiment, this invention can be further configured such that: the surface of the charging base is provided with a voltage regulating module electrically connected to the input terminal of the transformer module; the voltage regulating module is a multi-position switch used to adjust different charging power. By adopting the above technical solution, through the multi-position design of the voltage regulating module, users can adjust the charging power according to actual needs, adapt to the charging requirements of different batteries, ensure stable charging of the battery in different power modes, and extend battery life.

[0012] In a preferred embodiment, this invention can be further configured such that the first, second, and third rotating ears are all semi-circular discs, and the surfaces of the fixing base and the adjusting base are each provided with a groove adapted to the conductive strip on the surface of the first rotating ear. Electrode patches electrically connected to the output terminal of the charging protection module are arranged within the grooves. By adopting the above technical solution, and by designing the first, second, and third rotating ears as semi-circular discs, and cooperating with the electrode patches in the grooves, stable contact between the battery and the electrodes is ensured during insertion, effectively reducing wear and poor contact problems during insertion and removal.

[0013] In a preferred embodiment, this invention can be further configured such that: the surface of the first rotating ear is provided with two sets of mounting grooves adapted to the structure of the second rotating ear, the surface of the second rotating ear is provided with two sets of mounting grooves adapted to the structure of the third rotating ear, and the electrical contact grooves on the surfaces of the first and second rotating ears are arranged within the corresponding mounting grooves. By adopting the above technical solution, the mounting grooves provided on the surfaces of the first and second rotating ears allow for flexible combination of electrode components, providing greater compatibility and adapting to the charging needs of various battery specifications, thus improving the versatility of the device.

[0014] In a preferred embodiment, this invention can be further configured such that the conductive strips and conductive grooves on the surfaces of the first, second, and third rotating ears are all metal electrode structures, used for sequential electrode connection between the first, second, and third rotating ears, with the electrodes of the fixed clamp group and the moving clamp group having opposite polarities. By adopting the above technical solution, through the metal electrode design of the conductive strips and conductive grooves, continuous electrode connection between different components of the charger is achieved, effectively improving current transmission efficiency and ensuring correct electrode polarity connection during charging.

[0015] In a preferred embodiment, this invention can be further configured such that the electric contact ear is a metal spring structure, with one side connected to the electrode groove and electrode slot on the surface of the third rotating ear via an electrode clip, and the other side connected to the external lithium battery electrode for battery charging. By adopting the above technical solution and using the metal spring design of the electric contact ear, it can provide flexible adjustment during insertion, ensuring a stable connection and preventing loosening of the electrode contact, thereby improving the reliability of charging and the durability of the connection.

[0016] The beneficial effects achieved by this utility model are as follows:

[0017] 1. In this utility model, the structural design of the fixed clamp group and the moving clamp group, along with the modular structure of the first rotating ear, the second rotating ear, the third rotating ear, and the contact ear, ensures the charger's compatibility and flexibility when dealing with different battery specifications. By using sliding blocks mounted on the fixed base and the adjusting base, the charger achieves stable clamping and electrode connection for batteries of different sizes, effectively avoiding the problem of poor electrode contact during the insertion and removal process of traditional chargers, thereby improving the stability and reliability of the charging process.

[0018] 2. In this invention, the multi-layered connection design between the first, second, and third rotating ears allows the electrode modules to be connected sequentially, ensuring smooth current conduction. Simultaneously, the snap-fit ​​design between the electrode clips and the contact groove / slot utilizes the elasticity of the contact ears to achieve stable charging contact and convenient insertion / removal. This design not only ensures a stable power output for the battery during charging but also improves the ease of use of the device, making it particularly suitable for applications requiring frequent plugging and unplugging. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model;

[0020] Figure 2 This is a schematic diagram of the fixed clamp group and the movable clamp group according to an embodiment of the present invention;

[0021] Figure 3 This is an exploded view of the fixed clamp assembly according to an embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the third rotating ear and electric shock ear structure according to an embodiment of the present invention.

[0023] Figure label:

[0024] 100. Charging base; 110. Voltage regulating module; 120. Cabin; 130. Indicator light; 200. Sliding guide seat; 210. Fixed seat; 220. Adjusting seat; 221. Guide slider; 222. Tension spring; 300. Fixed clamp assembly; 310. First rotating ear; 320. Second rotating ear; 330. Third rotating ear; 340. Electric contact ear; 311. Electric contact strip; 312. Electric contact slide groove; 331. Electrode buckle groove; 341. Electrode buckle ear; 400. Moving clamp assembly. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0026] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0027] The following is in conjunction with the appendix Figures 1-4 This invention describes an external lithium battery charger provided by some embodiments of the present invention.

[0028] Example 1

[0029] This embodiment provides an external lithium battery charger, including: a charging base 100, a sliding guide base 200, a fixed clamp assembly 300, and a movable clamp assembly 400. The surface of the charging base 100 has a cabin 120. The sliding guide base 200 is embedded and installed inside the cabin 120. A fixed base 210 is fixedly installed on the surface of the sliding guide base 200. The bottom end of the adjusting base 220 has a guide block 221 slidably installed inside the sliding guide base 200. The fixed clamp assembly 300 and the movable clamp assembly 400 are rotatably installed inside the fixed base 210 and the adjusting base 220, respectively. The inner side of the charging base 100 is provided with a transformer module, a voltage regulator module, and a charging protection module. The fixed clamp group 300 and the movable clamp group 400 have the same structure, both including a first rotating ear 310, a second rotating ear 320, a third rotating ear 330 and an electric contact ear 340. The number of the first rotating ear 310, the second rotating ear 320 and the third rotating ear 330 increases and doubles in sequence. Each of the first rotating ear 310, the second rotating ear 320 and the third rotating ear 330 is provided with a conductive strip 311 on one side and a conductive groove 312 and an electrode fastening groove 331 on the other side. The electric contact ear 340 is provided with electrode fastening ears 341 on both sides for fastening with the electrode fastening groove 331 and the conductive groove 312.

[0030] In practical applications, by connecting the charging base 100 to a household power source, when the lithium battery needs charging, it is inserted into the fixed clamp group 300 and the movable clamp group 400. The first rotating ear 310, the second rotating ear 320, and the third rotating ear 330 automatically adapt to the electrode positions of the battery, ensuring that the contact ear 340 makes close contact with the battery electrodes, forming an electrode connection. During charging, the voltage regulating module 110 can select an appropriate charging power according to the battery specifications, and the charging status is displayed in real time through the indicator light 130, thereby achieving efficient charging of the battery.

[0031] Further, in this embodiment, both the fixed clamp assembly 300 and the movable clamp assembly 400 are modularly designed, allowing users to freely adjust and adapt them according to battery specifications. In particular, the elastic structure of the contact ear 340 ensures stable electrode contact even after repeated insertions and removals, avoiding the contact problems found in traditional chargers. Simultaneously, the adjustment base 220 allows for easy battery removal by sliding after charging, improving operational convenience.

[0032] Example 2

[0033] This embodiment further optimizes the design based on Embodiment 1, focusing on improving the flexibility and safety of use. The bottom surface of the charging base 100 is provided with an electrode plug for connecting to a 110-220V power supply, and an indicator light 130 is provided on the surface to display the charging progress. The voltage regulation module 110 is a multi-position switch used to select the appropriate charging power according to different battery specifications. To ensure operational stability during use, both the fixed base 210 and the adjusting base 220 have sliding grooves on their surfaces that are adapted to the conductive strip 311 on the surface of the first rotating ear 310. Electrode patches electrically connected to the output terminal of the charging protection module are arranged within the sliding grooves.

[0034] During use, after the user embeds the sliding guide seat 200 into the inner side of the cockpit 120, they can select the charging power level by adjusting the voltage regulating module 110 to ensure that different battery types are charged under appropriate power conditions. Through the combined design of the first rotating ear 310, the second rotating ear 320, and the third rotating ear 330, when the lithium battery is inserted, the first rotating ear 310, the second rotating ear 320, and the third rotating ear 330 automatically adapt to the different positions of the battery electrodes. Stable electrode connection is achieved through the connection of the contact groove 312 and the electrode latching groove 331 with the contact ear 340. After charging is complete, the user can easily remove the lithium battery, separating the contact ear 340 from the battery electrodes, thus ending the charging process.

[0035] In this embodiment, the flexible combination and mounting groove design between the first rotating ear 310, the second rotating ear 320, and the third rotating ear 330 ensures a stable electrode connection for the battery during both charging and insertion / removal, effectively avoiding the loose contact problem common in traditional chargers. Furthermore, the first rotating ear 310, the second rotating ear 320, and the third rotating ear 330 are all semi-circular, and the sliding groove design facilitates easier connection between them, adapting to different lithium battery electrode designs, making it particularly suitable for lithium batteries of various shapes and sizes.

[0036] In this embodiment, the contact ear 340 is a metal spring structure, which is connected to the electrodes of the contact groove 312 and the electrode slot 331 via the electrode clip 341, ensuring the stability of the connection and the safety of use. When it is necessary to remove the lithium battery, the user only needs to apply a certain force, and the spring will automatically reset, thereby realizing a convenient removal operation.

[0037] Working principle and usage process of this utility model:

[0038] The first rotating ear 310, the second rotating ear 320, and the third rotating ear 330 can be installed on the surfaces of the fixed base 210 and the adjusting base 220 according to the specifications of the lithium battery to be charged. During the sequential installation of the first rotating ear 310, the second rotating ear 320, and the third rotating ear 330, the electrodes are arranged by fastening the corresponding contact ears 340 on the surface. The contact ear 340 structure can be arranged in a suitable position according to the position of the battery electrodes. The adjusting base 220 is slid according to the size of the battery. The elasticity of the tension spring 222 causes the adjusting base 220 to move towards the fixed base 210 to achieve the clamping work of the battery. During clamping, the two electrodes of the battery contact the contact ears 340 on the surfaces of the fixed clamp group 300 and the moving clamp group 400 respectively to form an electrode connection. The battery is charged by adjusting the voltage of the voltage regulating module 110 according to the battery charging voltage fluctuation to a suitable charging power level. The plug on the bottom of the charging base 100 is connected to a household 110-220V power supply.

[0039] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An external lithium battery charger, characterized by, The utility model relates to a charging base (100), slide guide seat (200), fixed clamp group (300) and movable clamp group (400), the surface of charging base (100) is equipped with seat cabin (120), slide guide seat (200) is embedded and is installed in the inboard of seat cabin (120), the surface fixed mounting of slide guide seat (200) is equipped with fixed seat (210), the inboard sliding installation of slide guide seat (200) is equipped with lead slide block (221), lead slide block (221) is located the bottom end of adjusting seat (220), fixed clamp group (300) and movable clamp group (400) are rotatoryly installed inboard of fixed seat (210) and adjusting seat (220) respectively, the inboard of charging base (100) is equipped with voltage transformation module, voltage stabilizing module and charging protection module, fixed clamp group (300) and movable clamp group (400) structure are same and include first rotary lug (310), second rotary lug (320), third rotary lug (330) and electric contact lug (340), the number of first rotary lug (310), second rotary lug (320) and third rotary lug (330) is increasing in turn doubling, and one side of first rotary lug (310), second rotary lug (320) and third rotary lug (330) is equipped with electricity guide bar (311), the other side of first rotary lug (310), second rotary lug (320) and third rotary lug (330) is equipped with electricity sliding slot (312) and electrode buckle groove (331), both sides of electric contact lug (340) are equipped with electrode buckle lug (341) for buckling with electrode buckle groove (331) and electricity sliding slot (312). The bottom surface of the charging base (100) is provided with an electrode plug for connecting a 110-220V power supply; the surface of the charging base (100) is provided with an indicator light (130) electrically connected with the charging protection module for charging progress display.

2. The external lithium battery charger according to claim 1, wherein, The surface of the charging base (100) is provided with a voltage regulating module (110) electrically connected with the input end of the voltage transformation module, and the voltage regulating module (110) is a multi-position switch for adjusting different charging power.

3. The external lithium battery charger of claim 1, wherein, The first rotary lug (310), the second rotary lug (320) and the third rotary lug (330) are all semicircular discs, the surface of the fixed seat (210) and the adjusting seat (220) is provided with a sliding groove matched with the electricity guide bar (311) on the surface of the first rotary lug (310), and an electrode patch electrically connected with the output end of the charging protection module is arranged in the sliding groove.

4. The external lithium battery charger of claim 1, wherein, The surface of the first rotary lug (310) is provided with two groups of installation grooves matched with the structure of the second rotary lug (320), the surface of the second rotary lug (320) is provided with two groups of installation grooves matched with the structure of the third rotary lug (330), and the electricity sliding slot (312) on the surface of the first rotary lug (310) and the second rotary lug (320) is arranged in the corresponding installation groove.

5. The external lithium battery charger of claim 1, wherein, ​ 6. The external lithium battery charger of claim 1, wherein, The first rotating ear (310), the second rotating ear (320) and the third rotating ear (330) are all metal electrode structures, which are used for sequentially connecting electrodes between the first rotating ear (310), the second rotating ear (320) and the third rotating ear (330), and the electrodes of the fixed clamp group (300) and the movable clamp group (400) are opposite to each other.

7. The external lithium battery charger of claim 1, wherein, The electrically-conductive ear (340) is a metal spring structure, one side of which is connected with the surface electrically-conductive groove (312) and the electrode buckle groove (331) of the third rotating ear (330) through the electrode buckle ear (341), and the other side is connected with an external lithium battery electrode to charge the battery.

Images