Constant-voltage battery cap and constant-voltage battery

Abstract

The present utility model belongs to the technical field of batteries, and particularly relates to a constant-voltage battery cap and a constant-voltage battery. The constant-voltage battery cap comprises a constant-voltage cap body, the constant-voltage cap body comprising a constant-voltage circuit board and a connecting ring, wherein the connecting ring surrounds the constant-voltage circuit board and extends downwards; and a positive-electrode output end is provided on the upper side of the constant-voltage circuit board. The constant-voltage circuit board further has a positive-electrode input end and a negative electrode end, wherein the positive-electrode input end is further provided with a downward extending crimping structure, and the negative electrode end of the constant-voltage circuit board is connected to the connecting ring. When the constant-voltage cap body is mounted on a battery cell, the crimping structure abuts against a positive electrode head of the battery cell, and the connecting ring covers the periphery of the battery cell and is in contact with a negative electrode of the battery cell. By means of changing the connection mode between the constant-voltage cap body and the battery cell, the constant-voltage battery cap makes a constant-voltage battery more stable during usage after the connection, and the connection mode is simpler, and enables easy assembly and easy implementation of automated production.

Description

Constant voltage battery cover and constant voltage battery TECHNICAL FIELD

[0001] The utility model belongs to the technical field of battery, especially relate to a constant voltage battery cover and constant voltage battery. BACKGROUND

[0002] In daily life, lithium battery or nickel hydrogen battery is widely applied due to easy charging and discharging operation, convenient carrying and stable and reliable performance.But the voltage of the battery will gradually decrease during use, that is, it cannot work at constant voltage; and some devices need to work at constant voltage to obtain better use experience, therefore, in order to keep the output voltage of the battery stable, a battery cap is generally installed on the battery cell, a voltage stabilizing module is arranged in the battery cap, and the voltage stabilizing module is connected with the positive and negative poles of the battery cell, at present, a direct wiring mode is mostly used, the voltage stabilizing module is connected with the positive and negative poles of the battery cell through welding, this mode is stable in connection, but the process is complex and the cost is high, at present, a spring needle mode is also used to replace the wire, the two spring needles are connected with the positive and negative pole pins of the battery cell, in daily use and carrying, the battery is small in size and basically cylindrical, the battery is easy to roll and collide, which causes the positive and negative poles of the voltage stabilizing module to be disconnected, and finally causes the battery to be unusable. TECHNICAL PROBLEM

[0003] The utility model aims at providing a constant voltage battery cover, which changes the connection mode of the constant voltage cover body and the battery cell, and is more stable in use after connection. TECHNICAL SOLUTION

[0004] Based on this, the utility model provides a constant voltage battery cover, which includes a constant voltage cover body, the constant voltage cover body includes a constant voltage circuit board and a connecting ring, the connecting ring is arranged on the constant voltage circuit board and extends downward, the upper side of the constant voltage circuit board is provided with a positive output end, the constant voltage circuit board also has a first electrode end and a second electrode end, the first electrode end is also provided with a downward extending crimping structure, and the second electrode end of the constant voltage circuit board is in conduction with the connecting ring.

[0005] When the constant voltage cover body is installed on the battery cell, the crimping structure is in abutment with the first electrode of the battery cell, and the connecting ring is in contact with the second electrode of the battery cell by wrapping the outer periphery of the battery cell.

[0006] The constant voltage battery cover described above, the outer periphery of the battery cell is provided with an annular groove, and the lower side of the connecting ring is a connecting edge extending to the annular groove.

[0007] The constant voltage battery cover described above, the connecting edge extends into the annular groove and is attached to the inner part of the annular groove.

[0008] The connecting edge of the connecting ring is located on the inner upper half wall of the annular groove.

[0009] The crimping structure is a conductive spring sheet or an elastic pin or a spring.

[0010] The first electrode end is a positive input end, the second electrode end is a negative end, the crimping structure is in abutment with a positive electrode head of the battery cell, and the connecting ring is in contact with a negative electrode of the battery cell.

[0011] The crimping structure comprises a deformed section connected with the positive input end of the constant-voltage circuit board and a connecting end connected to the lower side of the deformed section, and the connecting end is arranged apart from the constant-voltage circuit board through the deformed section.

[0012] The connecting ring is connected to the lower side or the outer periphery of the constant-voltage circuit board, or

[0013] The upper end of the connecting ring is provided with an annular upper stop edge extending to the middle part, the connecting ring is sleeved on the outer side of the constant-voltage circuit board, and the annular upper stop edge is in abutment with the upper side of the constant-voltage circuit board.

[0014] The constant-voltage cover body is further provided with a charging port on the outer periphery.

[0015] The utility model further provides a constant-voltage battery, including battery cell, the upper side of battery cell is equipped with above-mentioned constant-voltage battery cover, and the connecting edge of the lower side of connecting ring is covered in annular groove and forms the connecting part with the diameter less than battery cell. Beneficial effects

[0016] The utility model discloses the following beneficial effects are obtained by implementing the embodiment:

[0017] The utility model provides a constant-voltage battery cover, which improves the structure of the constant-voltage cover body, and connects the first electrode of the battery cell through the internal crimping structure, and stably connects the entire constant-voltage cover body on the battery cell by covering the entire connecting ring on the outer periphery of the battery cell, and the connecting ring also serves as the second electrode end connection of the constant-voltage circuit board, so that the second electrode end of the constant-voltage circuit board is in communication with the corresponding second electrode of the battery cell, the overall structure of the constant-voltage cover body is simpler, the assembly is convenient, and the connection is more stable and not easy to be loosened and disconnected due to collision. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments description. Obviously, the drawings described in the following embodiments are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without any creative effort.

[0019] Fig. 1 is a structural schematic diagram of a constant voltage battery cap provided by the embodiments of the present application;

[0020] Fig. 2 is a schematic diagram of an embodiment of a constant voltage cap body;

[0021] Fig. 3 is a schematic diagram of an embodiment of a constant voltage cap body;

[0022] Fig. 4 is a schematic diagram of a bottom view of Fig. 2;

[0023] Fig. 5 is a semi-sectional view of Fig. 1;

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

[0025] Fig. 7 is an exploded view of Fig. 6;

[0026] Fig. 8 is a schematic diagram of another embodiment of a charging port. Best mode of the present application

[0027] The technical solutions in the embodiments of the present application will be described clearly and completely in the following with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without any creative effort are within the scope of protection of the present application.

[0028] As shown in Figs. 1 to 5, the embodiments of the present application provide a constant voltage battery cap, which comprises a constant voltage cap body 2, the constant voltage cap body 2 comprises a constant voltage circuit board 3 and a connecting ring 22, the connecting ring 22 is arranged around the constant voltage circuit board 3 and extends downward, the upper side of the constant voltage circuit board 3 is provided with a positive output end 29, 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 downward extending crimping structure 31, the second electrode end of the constant voltage circuit board 3 is in conduction with the connecting ring 22. The present scheme connects the crimping structure inside with the first electrode of the battery cell, and the entire connecting ring is wrapped around the outer periphery of the battery cell, so that the entire constant voltage cap body is stably connected on the battery cell, and the connecting ring also serves as the second electrode end connection of the constant voltage circuit board, so that the second electrode end of the constant voltage circuit board is in communication with the corresponding second electrode of the battery cell, so that the overall structure of the constant voltage cap body is simpler, the assembly is convenient, and the connection is more stable and not easy to be loosened due to collision.

[0029] As an illustration, in the structure of the battery cell 1, generally the bottom and the outer periphery are negative as B - , the upper end has a positive head 11 of the battery cell as B + . Of course, there are also battery cells whose head at the upper end is negative, and the bottom and the outer periphery are positive. The present solution can correspond to the crimping structure 31 connected with the positive of the battery cell, and the connecting ring 22 connected with the negative of the battery cell. At this time, the first electrode end on the constant voltage circuit board 3 is positive, and the second electrode end is negative. According to the needs, the crimping structure 31 can be connected with the negative of the battery cell, and the connecting ring 22 can be connected with the positive of the battery cell. At this time, the first electrode end on the constant voltage circuit board 3 is negative, and the second electrode end is positive.

[0030] In the present solution, the first electrode end is the positive input end, the second electrode end is the negative end, the crimping structure 31 is in contact with the positive head 11 of the battery cell, and the connecting ring 22 is in contact with the negative 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 the constant voltage circuit board 3 and the connecting ring 22. The connecting ring 22 is arranged around the constant voltage circuit board 3 and extends downward. The constant voltage circuit board 3 has a positive output end 29 on the upper side. In the present solution, the positive output end 29 is in conduction with the constant voltage circuit board 3. The constant voltage circuit board 3 has a positive input end (i.e. the first electrode end) and a negative end (i.e. the second negative end). The positive input end is further provided with a crimping structure 31 extending downward. The negative end of the constant voltage circuit board 3 is in conduction with the connecting ring 22. When the constant voltage cover 2 is installed on the battery cell 1, the crimping structure 31 is in contact with the positive head 11 of the battery cell, and the connecting ring 22 is wrapped around the outer periphery of the battery cell 1 and in contact with the negative of the battery cell. The present solution adds a constant voltage cover to the battery cell, and connects the constant voltage circuit board 3 with the battery cell B + through the internal crimping structure and the positive head of the battery cell. The entire constant voltage cover is stably connected to the battery cell through the entire connecting ring wrapped around the outer periphery of the battery cell. The connecting ring also serves as the negative of the constant voltage circuit board, so that the constant voltage circuit board 3 is connected with the battery cell B - . The overall structure of the constant voltage cover is simpler, and the connection is more stable and less likely to be loosened by impact, resulting in connection failure.

[0032] In use, the constant voltage battery cover cap of the present solution is connected with the positive of the battery cell 1 through the positive output end 29 as P + , and the bottom of the battery cell 1 as P -The constant voltage battery module is installed on an electrical appliance for use. Generally, the output voltage of the constant voltage battery module is stabilized at 1.5V through the constant voltage circuit board 3. Since the constant voltage circuit board 3 is used to stabilize the voltage output by the battery cell, generally, a voltage reduction module is designed on the circuit board, and different voltage reduction modules can be selected according to different output voltages in the prior art, so the specific circuit structure of the constant voltage circuit board 3 is not limited in the present scheme.

[0033] Specifically, the present scheme mainly improves the connection mode of the constant voltage circuit board 3 with the positive electrode and the negative electrode of the battery cell. The connection mode is simpler, easier to assemble and realize automatic production.

[0034] In the embodiment of the utility model, 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 provided with a connecting edge 220 extending to the annular groove 12. The present scheme increases the stability of the connection between the connecting ring 22 and the battery cell 1, and the connecting edge 220 extends to at least the annular groove 12, so as to ensure that it has sufficient length.

[0035] Specifically, the connecting edge 220 extends into the annular groove 12 and is attached to the inside of the annular groove 12. In order to ensure stable connection, the connecting edge 220 is pressed into the annular groove 12 and attached to the inside of the annular groove 12 by rolling process. It can also be directly mechanically pressed to make the connecting edge 220 press into the annular groove 12. It is simple to manufacture, and when installed, the length of the connecting edge 220 is just extended to the outside of the annular groove 12, and then pressed into the annular groove 12 to complete the connection. In order to further ensure its stability, the part of the connecting edge 220 attached to the annular groove 12 is located on the inner upper wall of the annular groove 12. That is, the depth of the connecting edge 220 is controlled to extend from the upper end of the annular groove 12 and along the inner wall shape of the annular groove 12 after being attached, and the present scheme 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 connecting edge 220 and the battery cell 1. In the embodiment of the utility model, the connection mode of the constant voltage circuit board 3 with the positive electrode of the battery cell is through the pressure contact structure 31, and the pressure contact structure 31 can be made of conductive spring, spring and elastic contact pin.

[0037] Specifically, the crimping structure 31 preferably includes a deformation section 311 connected to the positive input end of the constant-voltage circuit board 3 and a connecting end 312 connected to the lower side of the deformation section 311; the connecting end 312 is a planar structure and is spaced apart from the constant-voltage circuit board 3 through the deformation 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 has elasticity through the deformation section 311, so that it always has an elastic force pressing towards the positive electrode head 11 of the battery cell, thereby maintaining the contact of the positive electrode. Compared with the traditional connection structure in which both the positive and negative electrodes use elastic compression pins, the structure of the conductive elastic sheet in the present solution is not easy to deform and shift, and only a single pole uses an elastic sheet structure, greatly reducing the problem of connection failure.

[0038] The connection ring 22 is in communication with the negative electrode of the constant-voltage circuit board 3, and can be made of an overall conductive material, and the connection can be ensured by contacting part of the negative electrode of the constant-voltage circuit board 3.

[0039] In order to make the structure simpler, the connection ring 22 is preferably made of an overall conductive material, and the connection mode of the connection ring 22 and the battery cell has three modes.

[0040] The first connection mode of the connection ring 22 and the battery cell 1 is that the connection ring 22 is connected to the lower side of the constant-voltage circuit board 3, and the connection ring 22 is located on the lower side of the constant-voltage circuit board 3. Its structure is simple, and only the negative electrode of the constant-voltage circuit board 3 needs to be arranged on the outer periphery of the lower side to contact the inner wall of the connection ring 22, thereby ensuring the connection.

[0041] The second connection mode of the connection ring 22 and the battery cell is that the connection ring 22 is arranged on the outer side of the constant-voltage circuit board 3 in a cladding manner, and at this time the negative electrode of the constant-voltage circuit board 3 is arranged on the outer periphery side.

[0042] The third connection mode of the connection ring 22 and the battery cell is that the upper end of the connection ring 22 is provided with an annular upper stop edge 221 extending to the middle part, the connection ring 22 is sleeved on the outer side of the constant-voltage circuit board 3, and the annular upper stop edge 221 abuts against the upper side of the constant-voltage circuit board 3. The difference between this mode and the above-mentioned modes is that the connection ring 22 clads the constant-voltage circuit board 3 as a whole, and the assembly is positioned through the annular upper stop edge 221, and the structure can make the installation more compact and the connection more stable.

[0043] As shown in FIGS. 6 and 7, in the embodiment of the utility model, the outer peripheral surface of the constant-voltage cover body 2 is further provided with a charging port 4. Specifically, the charging port 4 is a TYPE-C port, and is exposed to the outside from the connection ring 22. The constant-voltage circuit board 3 is further provided with a charging module, the charging port 4 is in communication with the charging module, and the charging port 4 is located between the connecting end 312 and the constant-voltage circuit board 3. When the battery cell is out of power, the charging port 4 is connected with an external power supply, and the power can be supplemented.

[0044] In addition, as shown in Figure 8, 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 is the preferred embodiment of the present application, it should be pointed out that, for those skilled in the art, without departing from the principles of the present application, under the premise of can make a number of improvements and deformation, these improvements and deformation also be considered as the protection scope of the present application.

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 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.

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