Constant-voltage battery cap and constant-voltage battery

Abstract

The utility model belongs to the technical field of batteries, and particularly relates to a constant-voltage battery cap and a constant-voltage battery. Comprising a constant-voltage cover body, the constant-voltage cover body comprises a constant-voltage circuit board and a connecting ring, the connecting ring is arranged on the constant-voltage circuit board in a surrounding mode and extends downwards, a positive electrode output end is arranged on the upper side of the constant-voltage circuit board, the constant-voltage circuit board is further provided with a positive electrode input end and a negative electrode end, the positive electrode input end is further provided with a pressing connection structure extending downwards, and the negative electrode end is provided with a pressing connection structure extending downwards. The negative electrode end of the constant-voltage circuit board is conducted with the connecting ring; when the constant-pressure cover body is installed on the battery cell, the crimping structure abuts against the positive electrode head of the battery cell, and the connecting ring wraps the periphery of the battery cell and makes contact with the negative electrode head of the battery cell. By changing the connection mode of the constant-pressure cover body and the battery core, the connected constant-pressure battery is more stable to use, the connection mode is simpler, the assembly is easy, and the automatic production is realized.

Description

Technical Field

[0001] This utility model belongs to the technical field of batteries, and particularly relates to a constant voltage battery cap and a constant voltage battery. Background Technology

[0002] In daily life, lithium-ion or nickel-metal hydride batteries are widely used due to their ease of charging and discharging, portability, and stable and reliable performance. However, during use, the battery voltage gradually decreases, making it impossible to maintain a constant voltage. Some devices require a constant voltage for optimal user experience. Therefore, to maintain stable output voltage, a battery cap is typically added to the cell, housing a voltage regulator module. This module connects to the positive and negative terminals of the cell. Currently, most methods use direct wiring, where the voltage regulator module's wires are soldered to the cell's terminals. While this method provides stable connections, it is complex and costly. Another approach uses spring-loaded pins instead of wires, connecting to the positive and negative terminals. However, in daily use and transport, the small size and cylindrical shape of the battery make it susceptible to collisions during rolling, potentially causing the voltage regulator module's connection to fail and rendering the battery unusable. Summary of the Invention

[0003] The purpose of this utility model is to provide a constant voltage battery cap, which makes the connection between the constant voltage cap and the battery cell more stable after connection.

[0004] Based on this, the present invention provides a constant voltage battery cap, including a constant voltage cap body, the constant voltage cap body including a constant voltage circuit board and a connecting ring, the connecting ring surrounding the constant voltage circuit board and extending downward, the constant voltage circuit board having a positive output terminal on its upper side, the constant voltage circuit board also having a first electrode terminal and a second electrode terminal, the first electrode terminal having a downwardly extending pressing structure, and the second electrode terminal of the constant voltage circuit board being connected to the connecting ring;

[0005] When the constant pressure cover is installed on the battery cell, the pressing structure abuts against the first electrode of the battery cell, and the connecting ring covers the outer periphery of the battery cell and contacts the second electrode of the battery cell.

[0006] As described above, in a constant voltage battery cap, an annular groove is formed on the outer periphery of the battery cell, and the lower side of the connecting ring is a connecting edge extending to the annular groove.

[0007] As described above, in a constant voltage battery cap, the connecting edge extends into the annular groove and fits against the inside of the annular groove.

[0008] In the constant voltage battery cap described above, the portion of the connecting edge that fits into the annular groove is located on the upper inner half of the annular groove.

[0009] As described above, in a constant voltage battery cap, the pressing structure is a conductive spring, an elastic pin, or a spring.

[0010] As described above, in a constant voltage battery cap, the first electrode is the positive input terminal, the second electrode is the negative terminal, the pressing structure abuts against the positive terminal of the battery cell, and the connecting ring contacts the negative terminal of the battery cell.

[0011] As described above, a constant voltage battery cap includes a crimping structure comprising a deformation section connected to the positive input terminal of the constant voltage circuit board and a connecting end connected to the lower side of the deformation section. The connecting end is spaced apart from the constant voltage circuit board through the deformation section.

[0012] As described above, in a constant voltage battery cap, the connecting ring is connected to the lower side or outer periphery of the constant voltage circuit board, or;

[0013] The upper end of the connecting ring is provided with an annular upper stop extending towards the center. The connecting ring is sleeved on the outside of the constant voltage circuit board, and the annular upper stop abuts against the upper side of the constant voltage circuit board.

[0014] As described above, a constant-voltage battery cap is provided with a charging port on the outer peripheral surface of the constant-voltage cap.

[0015] This utility model also provides a constant voltage battery, including a battery cell, with the aforementioned constant voltage battery cap on the upper side of the battery cell, and the connecting edge on the lower side of the connecting ring covering the annular groove to form a connecting part with a diameter smaller than that of the battery cell.

[0016] Implementing the embodiments of this utility model has the following beneficial effects:

[0017] This utility model provides a constant voltage battery cap, which improves the structure of the constant voltage cap and connects to the first electrode of the battery cell through an internal pressing structure. The entire constant voltage cap is stably connected to the battery cell by covering the outer circumference of the battery cell with a connecting ring. At the same time, the connecting ring also serves as the second terminal of the constant voltage circuit board, so that the second terminal of the constant voltage circuit board is connected to the corresponding second electrode of the battery cell. This makes the overall structure of the constant voltage cap simpler, easier to assemble, and the connection more stable, and less prone to loosening due to collisions and connection failure. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the structure of a constant voltage battery cap provided in an embodiment of this utility model;

[0020] Figure 2 This is a schematic diagram of one implementation method for a constant pressure cover.

[0021] Figure 3 This is a schematic diagram of embodiment two of the constant pressure cap.

[0022] Figure 4 for Figure 2 A bottom-view illustration;

[0023] Figure 5 for Figure 1 A half-section view;

[0024] Figure 6 This is a schematic diagram of a constant voltage battery module with a charging port.

[0025] Figure 7 for Figure 6 Exploded view;

[0026] Figure 8 This is a schematic diagram of another embodiment of the charging port. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] like Figures 1 to 5As shown, this utility model embodiment provides a constant voltage battery cap, including a constant voltage cap body 2. The constant voltage cap body 2 includes a constant voltage circuit board 3 and a connecting ring 22. The connecting ring 22 surrounds the constant voltage circuit board 3 and extends downward. The constant voltage circuit board 3 has a positive output terminal 29 on its upper side. The constant voltage circuit board 3 also has a first electrode end and a second electrode end. The first electrode end is also provided with a downwardly extending crimping structure 31. The second electrode end of the constant voltage circuit board 3 is conductive to the connecting ring 22. This solution connects to the first electrode of the battery cell through the internal crimping structure. By covering the entire periphery of the battery cell with the connecting ring, the entire constant voltage cap body is stably connected to the battery cell. At the same time, the connecting ring also serves as the connection of the second electrode end of the constant voltage circuit board, so that the second electrode end of the constant voltage circuit board is connected to the corresponding second electrode of the battery cell. This makes the overall structure of the constant voltage cap body simpler, easier to assemble, and the connection more stable, less prone to loosening due to collisions and connection failure.

[0029] As an explanation, in the structure of cell 1, its bottom and outer periphery are generally the negative electrode, serving as B. - The upper end has a positive terminal 11 for the battery cell, which serves as B. + Of course, some battery cells have the top end as the negative terminal and the bottom and outer periphery as the positive terminal. In this solution, the corresponding crimping structure 31 is connected to the positive terminal of the battery cell, and the connecting ring 22 is connected to the negative terminal of the battery cell. In this case, the first terminal of the constant voltage circuit board 3 is the positive terminal and the second terminal is the negative terminal. Alternatively, as needed, the crimping structure 31 can be connected to the negative terminal of the battery cell, and the connecting ring 22 can be connected to the positive terminal of the battery cell. In this case, the first terminal of the constant voltage circuit board 3 is the negative terminal and the second terminal is the positive terminal.

[0030] In this scheme, a conventional electrode method is used as an example for illustration, that is, the first electrode end is the positive input end, the second electrode end is the negative end, the crimping structure 31 abuts against the positive electrode head 11 of the battery cell, and the connecting ring 22 is in contact with the negative electrode of the battery cell.

[0031] In use, the constant voltage cover 2 is connected to the top of the battery cell 1. The constant voltage cover 2 includes a constant voltage circuit board 3 and a connecting ring 22. The connecting ring 22 surrounds the constant voltage circuit board 3 and extends downward. The constant voltage circuit board 3 has a positive output terminal 29 on its upper side. In this design, the positive output terminal 29 is conductive to the constant voltage circuit board 3. The constant voltage circuit board 3 has a positive input terminal (i.e., the first electrode) and a negative terminal (i.e., the second negative terminal). The positive input terminal also has a downwardly extending crimping structure 31. The negative terminal of the constant voltage circuit board 3 is conductive to the connecting ring 22. When the constant voltage cover 2 is installed on the battery cell 1, the crimping structure 31 abuts against the positive electrode head 11 of the battery cell, and the connecting ring 22 covers the outer periphery of the battery cell 1 and contacts the negative electrode of the battery cell. This design adds a constant voltage cover to the battery cell and connects it to the positive electrode head of the battery cell through the internal crimping structure, so that the constant voltage circuit board 3 and the battery cell B are connected. + The connection, through the entire connecting ring covering the outer periphery of the battery cell, ensures a stable connection of the entire constant voltage cover to the battery cell. Simultaneously, the connecting ring also serves as the negative terminal connection for the constant voltage circuit board, linking the constant voltage circuit board 3 to battery cell B. - The connection makes the overall structure of the constant pressure cover simpler and more stable, and less prone to loosening due to collisions, which could lead to connection failure.

[0032] When using the constant voltage battery cap in this design, the positive output terminal 29 is used as P. + The bottom of cell 1 serves as P - It is installed in electrical appliances for use. Generally, the constant voltage circuit board 3 stabilizes the output voltage of the constant voltage battery module at 1.5V. Since the constant voltage circuit board 3 is used to stabilize the output voltage of the battery cell, a step-down module is generally designed on the circuit board. In existing technology, different step-down modules can be selected according to different output voltages. Therefore, this solution does not elaborate on the specific circuit structure of the constant voltage circuit board 3.

[0033] Specifically, this solution mainly improves the positive and negative connection methods between the constant voltage circuit board 3 and the battery cell. The connection method is simpler, easier to assemble, and facilitates automated production.

[0034] In this embodiment of the invention, an annular groove 12 is formed on the outer periphery of the battery cell 1, and the lower side of the connecting ring 22 has a connecting edge 220 extending to the annular groove 12. This solution increases the stability of the connection between the connecting ring 22 and the battery cell 1 by extending the lower connecting edge 220 at least to the annular groove 12, ensuring that it has sufficient length.

[0035] Specifically, the connecting edge 220 extends into the annular groove 12 and fits snugly against the interior of the annular groove 12. To ensure a stable connection, this design uses a rolling process to press the connecting edge 220 into the annular groove 12 and ensure it fits snugly against the interior of the annular groove 12. Alternatively, a direct mechanical pressing method can be used to press the connecting edge 220 into the annular groove 12. This method is simple to manufacture; during installation, ensure that the length of the connecting edge 220 just extends outside the annular groove 12 before pressing it into the annular groove 12 to complete the connection. To further ensure stability, the portion of the connecting edge 220 that fits against the annular groove 12 is located on the upper inner half of the annular groove 12. That is, the depth of the connecting edge 220 is controlled so that after fitting, it extends from the upper end of the annular groove 12 and along the inner wall shape of the annular groove 12. This design limits the maximum extension length to half of the annular groove 12.

[0036] In addition, it ensures the stability of the connection and the contact between the connection edge 220 and the battery cell 1. Furthermore, in this embodiment of the present invention, the constant voltage circuit board 3 is connected to the positive terminal of the battery cell through a crimping structure 31. The crimping structure 31 described in this solution can be a conductive spring, a spring, or an elastic pin.

[0037] Specifically, in this preferred embodiment, the crimping structure 31 includes a deformable section 311 connected to the positive input terminal of the constant voltage circuit board 3 and a connecting end 312 connected to the lower side of the deformable section 311. The connecting end 312 is a planar structure and is spaced apart from the constant voltage circuit board 3 through the deformable section 311. The connecting end 312 ensures its contact area with the upper end of the positive electrode head 11 of the battery cell, and the elasticity of the deformable section 311 ensures that it always has a spring force pressing against the positive electrode head 11 of the battery cell, thereby maintaining the contact of the positive electrode. Compared with the traditional connection structure that uses elastic crimping pins for both positive and negative electrodes, the conductive spring structure of this solution is less prone to deformation and displacement, and only a single electrode uses a spring structure, which greatly reduces the problem of connection failure.

[0038] In this design, the connecting ring 22 is connected to the negative terminal of the constant voltage circuit board 3. It can be made entirely of conductive material, and the connection can be ensured by partially contacting the negative terminal of the constant voltage circuit board 3.

[0039] To simplify the structure, this design preferably uses a conductive material for the connecting ring 22 as a whole, and the connecting ring 22 can be connected to the battery cell in three ways.

[0040] One connection method between the connecting ring 22 and the battery cell 1 is as follows: the connecting ring 22 is connected to the lower side of the constant voltage circuit board 3, and the connecting ring 22 is located on the lower side of the constant voltage circuit board 3. Its structure is simple; the negative terminal of the constant voltage circuit board 3 only needs to be placed on its lower outer periphery to contact the inner wall of the connecting ring 22, thus ensuring connection.

[0041] The second connection method between the connecting ring 22 and the battery cell in this scheme is as follows: the connecting ring 22 is located on the outside of the constant voltage circuit board 3, in a covering shape, and the negative electrode of the constant voltage circuit board 3 is located on the outer periphery.

[0042] The third connection method between the connecting ring 22 and the battery cell in this scheme is as follows: the upper end of the connecting ring 22 is provided with an annular upper stop 221 extending towards the center. The connecting ring 22 is sleeved on the outside of the constant voltage circuit board 3, and the annular upper stop 221 abuts against the upper side of the constant voltage circuit board 3. This differs from the methods described above in that the connecting ring 22 completely covers the constant voltage circuit board 3, and the annular upper stop 221 forms an assembly positioning, resulting in a more compact installation and a more stable connection.

[0043] like Figure 6 Figure 7 As shown in this embodiment of the invention, a charging port 4 is also provided on the outer peripheral surface of the constant pressure cover 2. Specifically, the charging port 4 is a Type-C port and protrudes from the connecting ring 22 to the outside. A charging module is also provided on the constant pressure circuit board 3, and the charging port 4 is connected to the charging module, and the charging port 4 is located between the connecting end 312 and the constant pressure circuit board 3. When the battery cell is depleted, it can be connected to an external power source through the charging port 4 to replenish the power.

[0044] In addition, such as Figure 8 As shown, the TYPE-C charging port 4 in this design can also be positioned upwards, protruding from the upper surface of the constant voltage circuit board 3.

[0045] In this solution, the TYPE-C charging port 4 is fixed to the step-down circuit board 3 by welding. The positive and negative terminals of the TYPE-C charging port 4 are welded to the corresponding solder points of the constant voltage circuit board 3, thereby realizing the electrical connection between the TYPE-C charging port 4 and the step-down circuit board 3.

[0046] This utility model also provides a constant voltage battery, which includes a cell 1. The cell 1 is provided with a constant voltage battery cap as described above. Since the battery is provided with the same constant voltage battery cap, it also has the same beneficial effect.

[0047] Furthermore, to ensure normal use, the outer diameter of the constant pressure cover in this design is determined by the connecting ring 22. The outer diameter of the connecting ring 22 is basically the same as the outer diameter of the battery cell 1, and the connecting edge 220 on the lower side of the connecting ring 22 covers the annular groove 12 to form a connecting part with a diameter smaller than that of the battery cell 1. This allows the connecting ring 22 to tightly enclose the battery cell, making it less likely to fall off, and also eliminates the need for the outer diameter of the battery cell to increase due to the connection point.

[0048] This utility model provides a constant voltage battery cap, which improves the structure of the constant voltage cap and connects to the first electrode of the battery cell through an internal pressing structure. The entire constant voltage cap is stably connected to the battery cell by covering the outer circumference of the battery cell with a connecting ring. At the same time, the connecting ring also serves as the second terminal of the constant voltage circuit board, so that the second terminal of the constant voltage circuit board is connected to the corresponding second electrode of the battery cell. This makes the overall structure of the constant voltage cap simpler, easier to assemble, and the connection more stable, and less prone to loosening due to collisions and connection failure.

[0049] It should be understood that the terms "first," "second," etc., are used in this utility model to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this utility model, "first" information can also be referred to as "second" information, and similarly, "second" information can also be referred to as "first" information. In addition, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0050] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. A constant voltage battery cap, characterized in that, The system includes a constant pressure cover (2), which includes a constant pressure circuit board (3) and a connecting ring (22). The connecting ring (22) surrounds the constant pressure circuit board (3) and extends downward. The constant pressure circuit board (3) has a positive output terminal (29) on its upper side. The constant pressure circuit board (3) also has a first electrode end and a second electrode end. The first electrode end is also provided with a downwardly extending crimping structure (31). The second electrode end of the constant pressure circuit board (3) is connected to the connecting ring (22). When the constant pressure cover (2) is installed on the battery cell (1), the pressing structure (31) abuts against the first electrode of the battery cell, and the connecting ring (22) covers the outer periphery of the battery cell (1) and contacts the second electrode of the battery cell.

2. A constant voltage battery cap according to claim 1, characterized in that, The outer periphery of the battery cell (1) is provided with an annular groove (12), and the lower side of the connecting ring (22) is a connecting edge (220) extending to the annular groove (12).

3. A constant voltage battery cap according to claim 2, characterized in that, The connecting edge (220) extends into the annular groove (12) and fits against the inside of the annular groove (12).

4. A constant voltage battery cap according to claim 3, characterized in that, The portion of the connecting edge (220) that fits into the annular groove (12) is located on the upper inner half of the annular groove (12).

5. A constant voltage battery cap according to claim 1, characterized in that, The pressing structure (31) is a conductive spring, an elastic pin, or a spring.

6. A constant voltage battery cap according to any one of claims 1-5, characterized in that, The first electrode is the positive input terminal, the second electrode is the negative electrode, the crimping structure (31) abuts against the positive electrode head (11) of the battery cell, and the connecting ring (22) contacts the negative electrode of the battery cell.

7. A constant voltage battery cap according to claim 6, characterized in that, The crimping structure (31) includes a deformation section (311) connected to the positive input terminal of the constant voltage circuit board (3) and a connection end (312) connected to the lower side of the deformation section (311). The connection end (312) is spaced apart from the constant voltage circuit board (3) through the deformation section (311).

8. A constant voltage battery cap according to any one of claims 1 to 4, characterized in that, The connecting ring (22) is connected to the lower side or outer periphery of the constant voltage circuit board (3), or; The upper end of the connecting ring (22) is provided with an annular upper stop (221) extending towards the center. The connecting ring (22) is sleeved on the outside of the constant voltage circuit board (3), and the annular upper stop (221) abuts against the upper side of the constant voltage circuit board (3).

9. A constant voltage battery cap according to claim 5, characterized in that, The constant pressure cover (2) is also provided with a charging port (4) on its outer peripheral surface.

10. A constant voltage battery, characterized in that, Includes a battery cell (1), the upper side of which is provided with a constant voltage battery cap as described in any one of claims 1-9, and the connecting edge (220) on the lower side of the connecting ring (22) is covered in the annular groove (12) to form a connecting part with a diameter smaller than that of the battery cell (1).

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