Lead pin battery and PCB (printed circuit board) assembly

Abstract

The utility model belongs to the technical field of batteries, and discloses a lead pin battery and a PCB (Printed Circuit Board) assembly. The lead pin battery comprises a battery cell assembly, two lead pin assemblies, two shaping parts and a bonding part, wherein the battery cell assembly is provided with two end surfaces; the two guide needle assemblies and the two end faces are arranged in a one-to-one correspondence mode, each guide needle assembly comprises a cover cap and a guide needle connected to the cover cap, and the cover cap is connected with the corresponding end face through a connecting strip in a welded mode and buckled to the corresponding end face; the two shaping pieces are arranged on the periphery of the battery cell assembly in a surrounding manner at intervals in the axial direction and protrude out of the caps at the corresponding ends in the axial direction, so that accommodating spaces are formed in the two ends of the battery cell assembly; at least part of each containing space is filled with the bonding piece so as to cover the cover cap. According to the lead pin battery and the PCB assembly, the connection strength of the lead pin and the cap can be enhanced, the lead pin is prevented from being broken at a welding position, and meanwhile, the lead pin is prevented from falling off when a welding spot is fused at high temperature.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a pin battery and a PCB board assembly. Background Technology

[0002] For primary batteries with pins, in most applications, the two ends of the pin battery are soldered to a PCB board so that the battery can supply power to other electrical components on the PCB board. The pins of existing pin batteries are generally soldered to the cap, and the cap and the positive and negative terminals of the battery are connected by a connecting strip to form electrical conductivity. When the pin battery is supplying power, the current passing through it will inevitably generate heat. When the heat reaches a certain amount, it is easy to melt the solder joint, causing the pin to fall off the cap. On the other hand, the low strength of the solder joint between the cap and the pin is also easy to break under stress and fail, which will cause the battery to fail and affect the normal use of the equipment.

[0003] Therefore, there is an urgent need to design a lead-type battery and PCB board assembly to solve the above problems. Utility Model Content

[0004] One objective of this invention is to provide a lead battery that can strengthen the connection between the lead and the cap, prevent the lead from breaking at the welding position, and prevent the lead from falling off when the solder joint is melted at high temperature.

[0005] Another objective of this invention is to provide a PCB assembly that is more resistant to external forces and high temperatures, has a longer lifespan for the pin battery, thereby extending the normal operating time of the PCB and ensuring that the equipment can be used normally for a long time under high temperature conditions.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] The lead battery includes:

[0008] A battery cell assembly, wherein the aforementioned battery cell assembly has two end faces;

[0009] Two needle assemblies are provided one-to-one with the two end faces mentioned above. Each needle assembly includes a cap and a needle connected to the cap. The cap is welded to the corresponding end face via a connecting strip and fastened to the corresponding end face.

[0010] Two molded parts are spaced apart along the axial direction around the outer periphery of the battery cell assembly, and the caps of the molded parts protrude along the axial direction from the corresponding ends so that both ends of the battery cell assembly form accommodating spaces.

[0011] An adhesive element is used to fill at least a portion of each of the aforementioned accommodating spaces to cover the aforementioned cap.

[0012] As an alternative, the adhesive used in this process can be made of epoxy resin or silicone.

[0013] As an alternative, the aforementioned molded part is formed by wrapping the aforementioned battery cell assembly with adhesive tape; or

[0014] The aforementioned molded part is a one-piece molded cylindrical part, and some of the aforementioned battery cell components are interference-fitted into some of the aforementioned molded parts.

[0015] As an optional solution, the aforementioned battery cell assembly includes:

[0016] The cap is welded to the end face of the battery cell via a connecting strip;

[0017] An insulating layer is provided at least between the end face of the battery cell and the corresponding contact point of the cap.

[0018] As an alternative, the aforementioned insulating layer is manufactured using a heat-shrink process and attached to the outside of the aforementioned battery cell.

[0019] As an optional solution, the above-mentioned insulating layer includes:

[0020] A cylindrical portion, adapted to the size of the aforementioned battery cell and surrounding the periphery of the aforementioned battery cell;

[0021] The flange portion is connected to each end of the cylindrical portion. The flange portion is annular and is formed by extending radially inward from the edge of the cylindrical portion.

[0022] As an alternative, the insulation layer can be made of polyvinyl chloride or polyethylene terephthalate.

[0023] As an alternative, the aforementioned lead battery also includes a retainer for wrapping the cap to secure the cap to the battery cell.

[0024] As an alternative, the aforementioned fastener is formed by heat shrinking a cylindrical part.

[0025] The PCB assembly includes the aforementioned pin battery, substrate, and multiple electrical components soldered onto the substrate. The two ends of the pin battery are soldered to the substrate and supply power to the multiple electrical components.

[0026] The beneficial effects of this utility model are as follows:

[0027] This invention provides a pin-type battery. A molding component is placed around both ends of the cell assembly, with a cap located within the molding component. An adhesive component is then filled into the accommodating space, thus fixing the pin assembly to the cell assembly. Simultaneously, the cap is covered by the adhesive component, meaning the solder joint is no longer exposed and is also covered. When the temperature is too high, the presence of the adhesive component prevents the pin from shifting relative to the cap, even if the solder joint melts, ensuring normal conductivity. Furthermore, because the solder joint is covered by the adhesive component, the welded area between the pin and the cap is protected when the pin is subjected to external force, thereby reducing the risk of the pin breaking at the solder joint.

[0028] This utility model also provides a PCB assembly, including the aforementioned pin battery, a substrate, and multiple electrical components soldered onto the substrate. The two ends of the pin battery are soldered to the substrate and supply power to the multiple electrical components. By employing the aforementioned pin battery, this PCB assembly exhibits stronger resistance to external forces and high temperatures, resulting in a longer battery lifespan and extending the normal operating time of the PCB, thus ensuring prolonged normal operation of the equipment under high-temperature conditions. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of the pin battery provided in this embodiment of the utility model;

[0030] Figure 2 The explosion of the pin battery provided in this embodiment of the utility model Figure 1 ;

[0031] Figure 3 The explosion of the pin battery provided in this embodiment of the utility model Figure 2 ;

[0032] Figure 4 The explosion of the pin battery provided in this embodiment of the utility model Figure 3 ;

[0033] Figure 5 The explosion of the pin battery provided in this embodiment of the utility model Figure 4 .

[0034] In the picture:

[0035] 10. Battery cell assembly; 11. Battery cell; 12. Insulation layer; 121. Cylindrical part; 122. Flange part; 20. Pin assembly; 21. Cap; 22. Pin; 30. Molded part; 31. Accommodating space; 40. Adhesive part; 50. Fixing part; 60. Solder joint. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0037] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0040] This embodiment provides a pin battery that strengthens the connection between the pin 22 and the cap 21, preventing the pin 22 from breaking at the welding position and preventing the pin 22 from detaching when the solder joint 60 is melted at high temperature. Figure 1 and Figure 2As shown, the lead battery includes a cell assembly 10, two lead assemblies 20, two molding parts 30, and an adhesive part 40. The cell assembly 10 has two end faces. The two lead assemblies 20 are arranged one-to-one with the two end faces. Each lead assembly 20 includes a cap 21 and a lead 22 connected to the cap 21. The cap 21 is welded to the corresponding end face by a connecting strip and fastened to the corresponding end face. The two molding parts 30 are spaced apart along the axial direction around the outer periphery of the cell assembly 10. The molding parts 30 protrude axially from the cap 21 at the corresponding end so that both ends of the cell assembly 10 form an accommodating space 31. At least a portion of each accommodating space 31 is filled by the adhesive part 40 to cover the cap 21.

[0041] The aforementioned pin battery, by surrounding both ends of the cell assembly 10 with molding parts 30, with caps 21 located within the molding parts 30, and then filling the accommodating space 31 with adhesive 40, fixes the pin assembly 20 to the cell assembly 10. Simultaneously, the caps 21 are covered by the adhesive 40, meaning the solder joints 60 are no longer exposed and are also covered by the adhesive 40. When the temperature is too high, due to the presence of the adhesive 40, even if the solder joints 60 (see...) remain exposed... Figure 2 When the solder joint 60 melts, the pin 22 is fixed by the adhesive 40 and will not be displaced relative to the cap 21, thus ensuring normal conductivity. At the same time, because the solder joint 60 is covered by the adhesive 40, the welded position between the pin 22 and the cap 21 is protected when the pin 22 is subjected to external force, thereby reducing the risk of the pin 22 breaking at the solder joint 60.

[0042] In addition, in this embodiment, two molding parts 30 are used to form two accommodating spaces 31 at both ends of the cell assembly 10 to ensure that the shape of the adhesive 40 is consistent with the end of the cell assembly 10. As for the adhesive 40, only the two ends of the cell assembly 10 are used with the adhesive 40, and the periphery of the cell assembly 10 is not used with the adhesive 40, which reduces the amount of adhesive 40 used and reduces costs.

[0043] Optionally, the adhesive 40 is preferably made of epoxy resin, which has high strength after curing. In another embodiment, the adhesive 40 may also be made of silicone, and this is not limited thereto.

[0044] Optionally, the molding part 30 is formed by wrapping the cell assembly 10 with tape. This method is convenient for manual production of pin batteries, allows for quick winding, and ensures the sealing of the molding part 30 and the periphery of the cell assembly 10, preventing the adhesive part 40 from leaking out of the gaps during the curing process.

[0045] In another embodiment, the molded part 30 is an integrally formed cylindrical part, and a portion of the battery cell assembly 10 is interference-fitted into a portion of the molded part 30. It is understood that the molded part 30 can also be a pre-manufactured cylindrical part that can be directly installed. The molded part 30 can be made of plastic and has good insulation properties.

[0046] Optionally, such as Figure 2 As shown, the battery cell assembly 10 includes a battery cell 11 and an insulating layer 12. A cap 21 is welded to the end face of the battery cell 11 via a connecting strip (not shown). The insulating layer 12 is provided at least between the end face of the battery cell 11 and the corresponding position of the cap 21. With the above arrangement, when the cap 21 is placed on the end of the battery cell 11, it prevents electrical conduction between the cap 21 and the battery cell 11, thus preventing a short circuit.

[0047] Optionally, the insulation layer 12 is made by heat shrinking process and attached to the outside of the battery cell 11. The heat shrinking insulation layer 12 is simple to make and the heat shrinking time of the plastic sheet is very short, which can shorten the installation time of the insulation layer 12.

[0048] In other embodiments, the insulating layer 12 may also be an insulating material such as silicone, which is not limited here.

[0049] Optionally, such as Figure 2 As shown, the insulating layer 12 includes a cylindrical portion 121 and a flange portion 122. The cylindrical portion 121 is adapted to the size of the battery cell 11 and surrounds the periphery of the battery cell 11. Each end of the cylindrical portion 121 is connected to a flange portion 122, which is annular and extends radially inward from the edge of the cylindrical portion 121. Thus, the edge of the end face of the battery cell 11 is covered by the flange portion 122, and the position where the cap 21 is fastened is the edge position of the end face of the battery cell 11, thereby ensuring the insulation effect.

[0050] In this embodiment, the insulating layer 12 is manufactured using a heat-shrink process and is a single piece. In other embodiments, the insulating layer 12 may also be split into two parts, covering only both ends of the battery cell assembly 10; this is not limited here.

[0051] Optionally, the insulation layer 12 may be made of polyvinyl chloride (PVC) or polyethylene terephthalate (PET). Both of these materials have good insulation properties, are inexpensive, abundant in resources, and also have a certain flame-retardant effect.

[0052] Optionally, see Figures 3-5 The lead battery also includes a fixing member 50, which is used to wrap the cap 21 to fix the cap 21 to the cell 11. With the above configuration, the fixing member 50 can effectively wrap and fix the lead assembly 20 to both ends of the cell assembly 10. When setting the molding part 30, there is no need to hold the lead assembly 20 by hand, and the structural stability of the entire lead battery can be improved.

[0053] Optionally, the fastener 50 is formed by heat shrinking a cylindrical part. It is understood that the fastener 50 and the insulating layer 12 can be manufactured using the same method, the advantages of which will not be elaborated here. Furthermore, the fastener 50 can serve as the exterior of the lead battery, with trademarks and other information printed on it.

[0054] The following is combined Figures 1-5 The manufacturing process of the pin battery is explained:

[0055] 1. See Figure 2 11. Heat-shrinkable insulation layer 12 outside the battery cell;

[0056] 2. See Figure 4 Two pin assemblies 20 are fastened to both ends of the battery cell assembly 10, and then the battery cell assembly 10 and the two pin assemblies 20 are externally heat-shrinkable fasteners 50.

[0057] 3. See also Figure 3 Shaping parts 30 are provided at both ends of the fixing part 50;

[0058] 4. Fill each accommodating space 31 with adhesive 40 and wait for curing.

[0059] One end of the adhesive component 40 can be filled first and cured, and then the other end of the adhesive component 40 can be filled and cured.

[0060] Among them, the lead-in assembly 20 is divided into a positive terminal and a negative terminal lead-in assembly 20, which have similar structures and will not be further distinguished here.

[0061] This embodiment also provides a PCB assembly, including the aforementioned pin battery, substrate, and multiple electrical components soldered onto the substrate. The two ends of the pin battery are soldered to the substrate and supply power to the multiple electrical components. By employing the aforementioned pin battery, this PCB assembly has stronger resistance to external forces and high temperatures, and the pin battery has a longer service life, thereby extending the normal operation time of the PCB and ensuring that the device can be used normally for a long time under high temperature conditions.

[0062] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A pin battery, characterized in that, include: A battery cell assembly (10) having two end faces; Two needle assembly (20) are provided corresponding to the two end faces. The needle assembly (20) includes a cap (21) and a needle (22) connected to the cap (21). The cap (21) is welded to the corresponding end face by a connecting strip and fastened to the corresponding end face. Two molded parts (30) are spaced apart along the axial direction around the outer periphery of the battery cell assembly (10), and the molded parts (30) protrude along the axial direction from the caps (21) at the corresponding ends so that both ends of the battery cell assembly (10) form accommodating spaces (31). An adhesive (40) is used to fill at least a portion of each of the accommodating spaces (31) to cover the cap (21).

2. The lead battery according to claim 1, characterized in that, The adhesive (40) is made of epoxy resin or silicone.

3. The lead battery according to claim 1, characterized in that, The molding part (30) is formed by wrapping the battery cell assembly (10) with adhesive tape; or The molded part (30) is an integrally formed cylindrical part, and part of the battery cell assembly (10) is interference-fitted into part of the molded part (30).

4. The lead battery according to any one of claims 1-3, characterized in that, The battery cell assembly (10) includes: The battery cell (11) is connected to the end face of the battery cell (11) by a connecting strip through a cap (21); An insulating layer (12) is provided at least between the end face of the battery cell (11) and the corresponding cap (21).

5. The lead battery according to claim 4, characterized in that, The insulating layer (12) is made by heat shrinking process and attached to the outside of the battery cell (11).

6. The lead battery according to claim 4, characterized in that, The insulating layer (12) comprises: A cylindrical portion (121) is adapted to the size of the battery cell (11) and surrounds the periphery of the battery cell (11); A flange (122) is connected to each end of the cylindrical portion (121), the flange (122) being annular and extending radially inward from the edge of the cylindrical portion (121).

7. The lead battery according to claim 4, characterized in that, The insulating layer (12) is made of polyvinyl chloride or polyethylene terephthalate.

8. The lead battery according to any one of claims 1-3, characterized in that, The lead battery also includes a fixing member (50) for wrapping the cap (21) to fix the cap (21) to the cell (11).

9. The lead battery according to claim 8, characterized in that, The fastener (50) is formed by heat shrinking a cylindrical part.

10. A PCB board assembly, characterized in that, It includes a pin battery as described in any one of claims 1-9, a substrate, and a plurality of electrical components soldered on the substrate, wherein the two ends of the pin battery are soldered to the substrate and supply power to the plurality of electrical components.

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