Battery
By setting an injection-molded structure at the end of the battery cell body to cover the pole ear and hard plate, and affixing insulating tape, the impact wear and leakage short circuit problems caused by exposed pole ear are solved, and the stability and safety of the battery are improved.
Patent Information
- Application Number
- CN202520363884.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-03
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2035-03-03
AI Technical Summary
In the prior art, the battery tabs and circuit board components are exposed to the outside world, which are easily affected by impact and wear, and there is a risk of leakage and short circuit, which affects the safety and stability of the battery.
By setting an injection molding structure at the end of the battery body to cover the pole ear and hard plate, and affixing insulating tape, the pole ear and hard plate are protected to prevent external impact and wear, enhance electrical insulation performance, and prevent leakage and short circuit.
It improves the stability and safety of battery use, prevents the tabs from short-circuiting with the outside world, enhances mechanical strength, and ensures the normal use and safety of the battery.
Smart Images
Figure CN223462268U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the battery production technical field, and specifically relates to a battery. BACKGROUND
[0002] At present, when consumers select electronic products such as mobile phones, in addition to pursuing long endurance time and large capacity, they also gradually pursue the light and thin of electronic products. In electronic products, the battery occupies more than half of the volume of the electronic product, therefore, by reducing the occupied volume of the battery, the light and thin of the electronic product can be realized. In the prior art, the occupied volume of the battery head is reduced by changing the arrangement mode of the tab of the battery head and the circuit board assembly, thus although the overall occupied space of the battery is reduced, since the tab and the circuit board assembly are exposed to the outside world, they are easily impacted and abraded by the outside world, which affects the normal use of the battery, and at the same time, there is a risk of electric leakage, which affects the use safety of the battery. In addition, during production or installation, the tab may also be short-circuited with the outside world. SUMMARY
[0003] In order to solve the deficiencies of the prior art, the utility model provides a battery, by setting the injection molding structure, the tab and the hard plate are protected from the impact and abrasion of the outside world, the use stability of the battery is improved, at the same time, the electric leakage of the battery is prevented, and the use safety of the battery is improved; by pasting the insulating adhesive paper, the tab bending part is prevented from being exposed, and the risk of short circuit is avoided.
[0004] The technical effects achieved by the utility model are realized through the following technical aspects:
[0005] The utility model provides a kind of battery, including electric core and circuit board assembly, the electric core includes electric core main body and tab, the tab is led out by the end of the electric core main body, and the tab extends along the thickness direction of the electric core main body and is bent to form tab bending part along the thickness direction parallel to the electric core main body, the circuit board assembly includes hard plate and soft plate, the soft plate and the tab are electrically connected with the hard plate;
[0006] The end of the electric core main body is provided with injection molding structure, the injection molding structure covers the tab and the hard plate, and the injection molding structure is pasted with insulating adhesive paper close to the outer side surface of the tab bending part.
[0007] As a further description of the utility model technical scheme, the injection molding structure is formed with texture structure close to the outer side surface of the tab bending part.
[0008] As a further description of the utility model technical scheme, the injection molding structure is formed with groove close to the side surface of the tab bending part.
[0009] As a further description of the utility model technical scheme, the distance between the lug bending part and the inner wall of the groove is D1, and the D1 is less than 0.5 mm.
[0010] As a further description of the utility model technical scheme, the length of the groove is D2, the width of the main body of the battery cell is D3, and the battery has a relationship: 2 / 3D3≤D2≤5 / 6D3.
[0011] As a further description of the utility model technical scheme, the depth of the groove is H1, the thickness of the main body of the battery cell is H2, and the battery has a relationship: 1 / 12H2≤H1≤1 / 10H2.
[0012] As a further description of the utility model technical scheme, the thickness of the insulating adhesive paper is 0.04-0.1 mm.
[0013] As a further description of the utility model technical scheme, the battery further comprises a nickel sheet, the hard plate comprises a first side surface and a second side surface arranged oppositely, the first side surface faces the end of the main body of the battery cell, and the lug is connected to the first side surface through the nickel sheet.
[0014] As a further description of the utility model technical scheme, the soft plate comprises a first end and a second end, the first end is connected to the first side surface and located inside the injection molding structure, and the second end is located outside the injection molding structure.
[0015] As a further description of the utility model technical scheme, the second end is provided with a connector and a reinforcing gasket on the two opposite sides respectively.
[0016] In summary, the utility model has at least the following advantages:
[0017] The battery provided by the utility model discloses has the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 It is a structural schematic view of the battery of the utility model embodiment 1.
[0019] Figure 2 It is a sectional view of the battery of the utility model embodiment 1.
[0020] Figure 3 For Figure 2 Enlarged view of part A in the middle;
[0021] Figure 4 Structure diagram of the injection molding structure of the embodiment 2 of the utility model;
[0022] Figure 5 Partial sectional view of the battery of the embodiment 2 of the utility model;
[0023] Figure 6 Front view of the battery of the embodiment 2 of the utility model;
[0024] Figure 7 Explosion view of the battery of the embodiment 3 of the utility model.
[0025] Markings in the figure:
[0026] 1, battery cell; 11, battery cell main body; 12, tab; 121, tab bending part;
[0027] 2, circuit board assembly; 21, hard board; 211, first side; 212, second side; 22, soft board; 221, first end; 222, second end;
[0028] 3, injection molding structure; 31, texture structure; 32, groove;
[0029] 4, insulating adhesive paper; 5, nickel sheet; 6, connector; 7, reinforcing gasket. DETAILED DESCRIPTION
[0030] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. The described embodiments are part of the embodiments of the utility model, rather than all the embodiments.
[0031] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the utility model.
[0032] Embodiment 1
[0033] Reference Figures 1 to 3The battery provided by the embodiment comprises a battery cell 1 and a circuit board assembly 2. The battery cell 1 comprises a battery cell body 11 and a tab 12. The tab 12 is led out from the end of the battery cell body 11 and extends along the thickness direction of the battery cell body 11 and is bent to form a tab bending part 121 parallel to the thickness direction of the battery cell body 11. The circuit board assembly 2 comprises a hard board 21 and a soft board 22. The soft board 22 and the tab 12 are electrically connected to the hard board 21.
[0034] Specifically, the hard board 21 is arranged above the tab 12 in a horizontal state. The number of the soft board 22 is two. The two soft boards 22 are respectively connected to the opposite ends of the hard board 21. The end of the tab 12 is connected to the lower side of the hard board 21. In this way, the tab 12 and the hard board 21 are stacked in the vertical direction, which is conducive to reducing the thickness of the head of the battery, thereby compressing the volume of the battery to reduce the occupied space inside the electronic product, and facilitating the light and thin design of the electronic product.
[0035] Further, the end of the battery cell body 11 is provided with an injection molding structure 3. The injection molding structure 3 covers the tab 12 and the hard board 21. The outer side of the injection molding structure 3 close to the tab bending part 121 is provided with an insulating adhesive tape 4. By arranging the injection molding structure 3 at the end of the battery cell body 11 to cover the tab 12 and the hard board 21, the tab 12 and the hard board 21 can be protected from external impact and wear and tear, thereby improving the mechanical strength of the battery and the use stability of the battery. At the same time, the injection molding structure 3 has certain electrical insulation performance, which can isolate the current and prevent the battery from leaking, thereby improving the use safety of the battery. In addition, the injection molding structure 3 can also play a role in isolating the battery cell body 11 and the circuit board assembly 2, thereby preventing the electrolyte inside the battery cell body 11 from leaking and corroding the circuit board assembly 2, so as to improve the service life of the battery.
[0036] It should be noted that the injection molding structure 3 is mainly used to cover the tab 12 and the hard board 21 to achieve the protection effect. Since the battery of the embodiment is further protected on the basis of compressing the volume of the battery, the arrangement of the injection molding structure 3 is also based on the premise of minimizing the volume of the battery. Therefore, the tab 12 after bending treatment will be very close to the side surface of the injection molding structure 3, especially the tab bending part 121. Since the injection molding structure 3 is formed by fixed injection molding mold, the size of the injection molding structure 3 is relatively fixed. The formation of the tab bending part 121 is easily affected by the size tolerance or bending tolerance, thereby causing the tab bending part 121 of the battery finally produced to be close to the side surface of the injection molding structure 3 or even exposed outside the injection molding structure 3. Therefore, by arranging the insulating adhesive tape 4 on the outer side of the injection molding structure 3 close to the tab bending part 121, the tab 12 can be effectively prevented from being exposed, thereby avoiding the risk of short circuit between the tab 12 and the outside.
[0037] The battery of the embodiment can protect the tab and the hard plate from impact and abrasion from the outside, improve the use stability of the battery, and meanwhile, the injection molding structure has certain electrical insulation performance, can prevent the battery from leaking electricity, and improve the use safety of the battery; by pasting the insulating adhesive paper, the exposed tab bending part can be further prevented, and the risk of short circuit between the tab and the outside can be avoided.
[0038] Embodiment 2
[0039] As a further optimization of Embodiment 1, referring to Figures 4 to 6 The injection molding structure 3 is formed with a textured structure 31 on the outer side surface close to the tab bending part 121. In the embodiment, the textured structure 31 can be a spark pattern or a sun pattern, thereby increasing the roughness of the surface of the injection molding structure 3 to enhance the adhesion between the insulating adhesive paper 4 and the injection molding structure 3, thereby improving the adhesion and firmness between the insulating adhesive paper 4 and the injection molding structure 3, and further ensuring the protection effect of the insulating adhesive paper 4.
[0040] In some embodiments, the outer side surface of the injection molding structure 3 close to the tab bending part 121 can also be directly finished with a smooth surface without the textured structure 31, which is also conducive to improving the adhesion between the insulating adhesive paper 4 and the injection molding structure 3.
[0041] Further, the side surface of the injection molding structure 3 close to the tab bending part 121 can be formed with a groove 32. It can be understood that the space formed inside the groove 32 is the space compressed by the head of the battery, and this part of the space can be compensated to the electronic product itself to accommodate other components of the electronic product, thereby facilitating the reduction of the overall volume of the electronic product and realizing the slimming of the electronic product.
[0042] Further, the distance between the tab bending part 121 and the inner wall of the groove 32 is D1, and in the embodiment, D1 < 0.5 mm. In this way, the tab bending part 121 is tightly attached to the inner wall of the groove 32, and under the protection of the insulating adhesive paper 4, the tab bending part 121 will not be exposed, which can minimize the volume of the battery and ensure the use stability and safety of the battery.
[0043] In some embodiments, the length of the groove 32 is D2, the width of the cell body 11 is D3, and the battery has a relationship: 2 / 3D3 ≤ D2 ≤ 5 / 6D3. The depth of the groove 32 is H1, and the thickness of the cell body 11 is H2, and the battery has a relationship: 1 / 12H2 ≤ H1 ≤ 1 / 10H2. By setting the length and depth of the groove 32, the maximum space inside the groove 32 can be ensured to compress the volume of the battery to the maximum extent.
[0044] As a further optimization, the thickness of the insulating tape 4 is 0.04-0.1 mm. Since the thickness of the insulating tape 4 is extremely thin, the thickness can be basically ignored, thus not increasing the thickness of the battery, and being more conducive to compressing the occupied volume of the battery, and also being conducive to improving the aesthetics of the battery. In the present embodiment, the insulating tape 4 used is a PI high-temperature insulating tape.
[0045] The battery of the present embodiment can improve the roughness of the surface of the injection molding structure, enhance the adhesion between the insulating tape and the injection molding structure, and thus improve the fit and firmness between the insulating tape and the injection molding structure, further ensuring the protection effect of the insulating tape, by forming a textured structure on the outer side of the injection molding structure close to the lug bending part. By setting the groove, the space compressed by the battery can be compensated to the electronic product itself, which is conducive to reducing the overall volume of the electronic product and realizing the slimming of the electronic product. By setting the distance between the lug bending part and the inner wall of the groove, the minimization of the battery volume can be ensured. By setting the size of the groove, the volume of the battery can be compressed to the maximum extent. By selecting an insulating tape with a small thickness, the occupied volume of the battery can be compressed, and the aesthetics of the battery can be improved.
[0046] Embodiment 3
[0047] As a further optimization of Embodiment 2, with reference to Figure 7 The battery of the present embodiment further includes a nickel sheet 5, and the hard plate 21 includes first and second side surfaces 211 and 212 arranged opposite to each other, the first side surface 211 faces the end of the battery body 11, and the lug 12 is connected to the first side surface 211 through the nickel sheet 5. At least one of the first and second side surfaces 211 and 212 is provided with electronic components, in the present embodiment, the first and second side surfaces 211 and 212 are both provided with electronic components, the nickel sheet 5 is in a U shape, one end of the nickel sheet 5 is electrically connected to the first side surface 211 of the hard plate 21, and the other end of the nickel sheet 5 is welded to the end of the lug 12.
[0048] The soft plate 22 comprises a first end portion 221 and a second end portion 222, the first end portion 221 is connected to the first side surface 211 and located inside the injection structure 3, and the second end portion 222 is located outside the injection structure 3. As one of the embodiments, the soft plate 22 further comprises a soft plate main body between the first end portion 221 and the second end portion 222, the first end portion 221 is connected to the first side surface 211, the soft plate main body firstly extends along the length direction of the first side surface 211 to the end of the first side surface 211, and then bends between the end of the first side surface 211 and the end of the second side surface 212, and then extends along the second side surface 212 for a distance, and then extends in the direction perpendicular to the second side surface 212, so that the second end portion 222 is suspended above the second side surface 212 and located outside the injection structure 3. By arranging the tab 12, the hard plate 21 and the soft plate 22 along the length direction of the battery cell main body 11, the thickness of the battery head can be reduced, so that the overall volume of the battery is compressed, and the compressed battery space can be compensated to the electronic product itself, so as to facilitate the thinning of the electronic product.
[0049] In some embodiments, the second end portion 222 is provided with a connector 6 and a reinforcing gasket 7 on the opposite sides respectively. By arranging the reinforcing gasket 7 on the opposite sides of the connector 6, the mechanical strength of the second end portion 222 can be enhanced, so as to ensure the stable connection of the connector 6 with the external connecting device.
[0050] The battery of the embodiment can effectively reduce the thickness of the battery head, and compress the overall volume of the battery to the greatest extent, so as to realize the thinning of the electronic product. By arranging the reinforcing gasket, the mechanical strength of the second end portion is enhanced, so as to ensure the stable connection of the connector with the external connecting device.
[0051] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can pass through intermediate medium indirectly connect, can be two element inside communication or two element mutual action relationship. For ordinary skilled in the art, the above terms can be understood according to specific circumstances the specific meaning of the utility model.
[0052] In the description of the utility model, it is necessary to explain that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship commonly placed when the utility model product is used, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description and cannot be understood as indicating or implying relative importance.
[0053] In the utility model, unless otherwise expressly specified and limited, the first feature above or below the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature above, above and above the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature below, below and below the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.
[0054] Although the description of the utility model is combined with the above specific embodiments, it is obvious that persons skilled in the art can make many substitutions, modifications and changes according to the above content. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the appended claims.
Claims
1. A battery, characterized by, The battery includes an electric core (1) and a circuit board assembly (2), the electric core (1) includes an electric core body (11) and a tab (12), the tab (12) is led out from an end of the electric core body (11), and the tab (12) extends along a thickness direction of the electric core body (11) and is bent to form a tab bending part (121) along a thickness direction parallel to the electric core body (11), the circuit board assembly (2) includes a hard board (21) and a soft board (22), and the soft board (22) and the tab (12) are electrically connected with the hard board (21). An injection structure (3) is arranged at the end of the electric core body (11), the injection structure (3) covers the tab (12) and the hard board (21), and an insulating adhesive paper (4) is arranged on an outer side of the injection structure (3) close to the tab bending part (121).
2. The battery of claim 1, wherein, A texture structure (31) is formed on the outer side of the injection structure (3) close to the tab bending part (121).
3. The battery of claim 1, wherein, A groove (32) is formed on a side of the injection structure (3) close to the tab bending part (121).
4. The battery of claim 3, wherein, The distance between the tab bending part (121) and the inner wall of the groove (32) is D1, and D1 < 0.5 mm.
5. The battery of claim 3, wherein, The length of the groove (32) is D2, the width of the electric core body (11) is D3, and the battery has a relationship of 2 / 3D3 ≤ D2 ≤ 5 / 6D3.
6. The battery of claim 3, wherein, The depth of the groove (32) is H1, the thickness of the electric core body (11) is H2, and the battery has a relationship of 1 / 12H2 ≤ H1 ≤ 1 / 10H2.
7. The battery of claim 1, wherein, The thickness of the insulating adhesive paper (4) is 0.04-0.1 mm.
8. The battery of claim 1, wherein, A nickel sheet (5) is further included, the hard board (21) includes a first side (211) and a second side (212) arranged oppositely, the first side (211) faces the end of the electric core body (11), and the tab (12) is connected to the first side (211) through the nickel sheet (5).
9. The battery of claim 8, wherein, The soft board (22) includes a first end (221) and a second end (222), the first end (221) is connected to the first side (211) and located inside the injection structure (3), and the second end (222) is located outside the injection structure (3).
10. The battery of claim 9, wherein, The second end (222) is provided with a connector (6) and a reinforcing gasket (7) on two opposite sides, respectively.