Electric connector and battery

Abstract

The utility model relates to the technical field of batteries, in particular to an electric connecting piece and a battery, the electric connecting piece comprises a pole and a switching piece, the switching piece and the pole are integrally formed, and the switching piece is of a rectangular structure and is provided with a pole area and two tab welding areas; the pole is arranged in the pole area, and the two tab welding areas are located on the two sides of the pole respectively; the electric connecting piece provided by the utility model has the advantages of light weight, low manufacturing cost, short current path in use, smaller resistance and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to an electric connector and a battery. Background Art

[0002] As an energy storage device, the basic structure and components of the battery are very critical. A typical battery includes components such as tabs, poles, adapters and lower plastic. The tabs are the lead-out terminals of the battery electrodes, responsible for conducting the current; the poles are the positive and negative connection points of the battery, and the interface with the external circuit; the adapters are mainly used to connect the poles and tabs, usually made of highly conductive metals (such as copper or aluminum), and are generally arranged on the lower plastic.

[0003] In the prior art, the adapter is usually designed as a special-shaped structure, such as Figure 2 As shown. This design causes the center distance between the tabs of the adapter to be unequal to the center distance between the poles, thereby increasing the length of the adapter. A longer adapter will cause the current path between the pole and the tab to become longer, thereby increasing resistance; at the same time, a longer adapter will make the adapter heavier overall, use more materials, and is not conducive to cost control. Utility Model Content

[0004] In view of the above shortcomings of the prior art, the purpose of the present invention is to provide an electrical connector and a battery which are light in weight, low in manufacturing cost, have a short current path and low resistance when in use.

[0005] In order to achieve the above-mentioned purpose and other related purposes, the utility model provides an electrical connector, comprising:

[0006] Pole;

[0007] A transfer plate is formed integrally with the pole, the transfer plate is a rectangular structure, and has a pole area and two pole ear welding areas;

[0008] The pole is arranged in the pole area, and the two pole lug welding areas are respectively located on both sides of the pole.

[0009] In an embodiment of the present invention, the tab welding area is bent toward the direction close to the pole, so that the tab welding area and the side opposite to the pole form a sunken platform.

[0010] In one embodiment of the utility model, the pole is arranged on the upper surface of the pole area;

[0011] The lower surface of the pole area is lower than the lower surface of the tab welding area, wherein the upper surface and the lower surface of the adapter are surfaces opposite to each other.

[0012] In an embodiment of the present invention, the two pole tab welding areas are symmetrically arranged about the pole.

[0013] In an embodiment of the present invention, the adapter plate is a rectangular structure, and the pole area and the two tab welding areas are arranged along the length direction of the adapter plate.

[0014] In an embodiment of the present invention, the ratio of the length to the width of the adapter sheet is in a range of 1.5 to 5.

[0015] In an embodiment of the present invention, the dimensions of the pole area and the tab welding area along the width direction of the adapter are equal.

[0016] In an embodiment of the present invention, the size ratio of the pole area to the tab welding area along the length direction of the adapter sheet ranges from 0.5 to 3.

[0017] In an embodiment of the present invention, the shape of one of the four corners of the adapter plate is different from the shapes of the other three corners.

[0018] In order to achieve the above-mentioned purpose and other related purposes, the utility model provides a battery, including the above-mentioned electrical connector.

[0019] In summary, the utility model eliminates the welding process between the pole and the adapter in the traditional battery by forming the pole and the adapter in an integrated manner, simplifies the production process, reduces manufacturing cost and complexity, reduces welding points, and reduces the risk of connection failure and instability. The integrated design reduces the contact resistance in current conduction, improves the overall electrical performance of the battery, avoids the resistance loss caused by multi-layer connection, and improves the conduction efficiency and current stability; the rectangular adapter design and the layout of the pole ear welding area respectively arranged on both sides of the pole optimize the current path between the pole and the pole ear, reduce resistance and greatly reduce the size and weight of the adapter, which is helpful for cost control. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is a schematic diagram of the structure of an electrical connector in an optional embodiment of the utility model;

[0022] Figure 2 It is a schematic diagram of the structure of the adapter in the prior art;

[0023] Figure 3This is a schematic diagram of the structure of the electrical connector of the utility model before improvement;

[0024] Figure 4 This is a schematic diagram of the three-dimensional structure of an electrical connector in an optional embodiment of the utility model;

[0025] Figure 5 It is a cross-sectional view of the structure of an electrical connector in an optional embodiment of the utility model;

[0026] Figure 6 This is a schematic diagram of the side structure of an electrical connector in another optional embodiment of the utility model;

[0027] Figure 7 for Figure 6 Bottom view of

[0028] Figure 8 A length-width ratio diagram of an electrical connector in an optional embodiment of the utility model;

[0029] Fig. 9 It is a dimensional ratio diagram of the pole area and the pole ear welding area of ​​the electrical connector in an optional embodiment of the utility model;

[0030] Component number description: pole 1, adapter 2, pole area 21, pole ear welding area 22, sink portion 23, first upper surface 21b, first lower surface 21a, second upper surface 22b, second lower surface 22a, cut corner 3. DETAILED DESCRIPTION

[0031] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and the features in the embodiments can be combined with each other without conflict. It should also be understood that the terms used in the embodiments of the present invention are intended to describe specific implementation schemes, rather than to limit the scope of protection of the present invention. The test methods for which specific conditions are not specified in the following examples are usually carried out under conventional conditions or under the conditions recommended by the manufacturers.

[0032] See also Figures 1 to 9. It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the utility model without substantially changing the technical content.

[0033] When numerical ranges are given in the embodiments, it should be understood that unless otherwise specified in the present invention, both endpoints of each numerical range and any value between the two endpoints can be selected. Unless otherwise defined, all technical and scientific terms used in the present invention are in accordance with the prior art mastery of those skilled in the art and the description of the present invention, and any prior art methods, equipment and materials similar or equivalent to the methods, equipment and materials in the embodiments of the present invention can also be used to implement the present invention.

[0034] The basic structure of a battery includes:

[0035] Tabs: Tabs are the output terminals of the battery, usually made of metal, such as copper or aluminum. They are connected to the battery pole 1 and electrically connected to the electrical equipment through the adapter 2; Tabs are generally divided into positive tabs and negative tabs, and the materials of the two are different to allow for correct connection to the circuit; positive tabs are usually made of aluminum, while negative tabs are made of nickel or copper; the design and quality of tabs directly affect the internal resistance and heat dissipation performance of the battery.

[0036] Post 1: Post 1 is the main electrode inside the battery and is the connector between the positive and negative electrodes. The chemical reaction of the battery occurs on Post 1 to generate current. Post 1 is usually made of lead, lead alloy or other chemical materials to meet the needs of different types of batteries.

[0037] Adapter 2: Adapter 2 is an important component used to connect the battery's tab and pole 1. It is usually made of highly conductive metal materials such as copper or aluminum to ensure that current can be smoothly transmitted from pole 1 to the tab while maintaining the stability and safety of the battery.

[0038] Lower plastic: The lower plastic is generally made of high temperature resistant and chemical corrosion resistant materials, such as PP (polypropylene), PE (polyethylene), etc. The lower plastic is located under the battery top cover and is used to provide additional structural support and protection for the adapter 2. It helps to fix and support the pole 1 and the adapter 2, while reducing the impact of the external environment on the inside of the battery; the lower plastic is usually made of plastic or other non-conductive materials to prevent electrode short circuits or other accidents.

[0039] like Figure 3 As shown, Figure 2 The improved electrical connector of the special-shaped adapter 2 combines the functions of the pole 1 and the adapter 2 into one, and can also be called an integrated pole. However, the distance between the pole area 21 on the bottom surface of the pole 1 and the pole ear welding area 22 is still large, and the length of the adapter 2 is still long, so that the current path between the pole 1 and the pole ear of the adapter 2 is still long, and the resistance is relatively large; at the same time, the longer adapter 2 will make the adapter 2 heavier as a whole, use more materials, and is not conducive to cost control.

[0040] See also Figure 2-3 , which is the structure before the improvement of this case. In order to solve the above problems and the problems in the background technology, the utility model provides an electrical connector, including a pole 1 and a transfer plate 2. The specific structure is as follows Figure 1 , 4 -5 shown;

[0041] The adapter plate 2 is integrally formed with the pole 1, and the adapter plate 2 is a rectangular structure, and has a pole area 21 and two pole ear welding areas 22;

[0042] The pole 1 is disposed in the pole area 21 , and the two pole tab welding areas 22 are respectively located on two sides of the pole 1 .

[0043] It should be noted that the pole 1 and the adapter 2 are both made of metal conductive materials, and the pole 1 and the adapter 2 are integrally formed, for example, by machining, casting, etc. The pole area 21 is the area where the adapter 2 and the pole 1 are integrally connected. Generally, the pole 1 is cylindrical and vertically connected to the adapter 2. The tab welding area 22 is used to weld and connect the tabs. The two tab welding areas 22 are respectively located on both sides of the pole 1, that is, in the axial direction of the pole 1, the two tab welding areas 22 are always located on both sides of the pole 1, that is, the pole 1 is always located between the lines connecting the two tab welding areas 22.

[0044] In this case, if Figure 4-5As shown, by forming the pole 1 and the adapter 2 in one piece, the welding process between the pole 1 and the adapter 2 in the traditional battery can be omitted, which not only simplifies the production process, but also reduces the manufacturing cost and complexity. Reducing welding points also reduces potential connection failures and instability; at the same time, the one-piece design can reduce the contact resistance in current conduction and improve the overall electrical performance of the battery; the integration of the pole 1 and the adapter 2 avoids the resistance loss caused by multi-layer connection, which helps to improve the conductivity efficiency of the battery and ensure stable current transmission; in addition, the one-piece molding helps to reduce additional connection materials and components, thereby reducing the volume and weight of the battery, thereby reducing production costs. In this case, by designing the adapter 2 as a rectangular structure and making the two pole ear welding areas 22 located on both sides of the pole 1, the center distance of the pole ear is equal to or close to the center distance of the pole 1, which helps to reduce the current path between the pole 1 and the pole ear, thereby helping to reduce resistance, and greatly reducing the size and weight of the adapter 2, which helps to control costs.

[0045] In addition, the rectangle in the present application refers to a roughly rectangular structure rather than a strict rectangular shape.

[0046] Furthermore, as the battery capacity increases, it is necessary to gradually lower the height of the lower plastic in the battery to increase the internal space of the battery cell and thereby increase the battery capacity; however, since the adapter 2 is mounted on and connected to the lower plastic, when the height of the lower plastic is lowered, the bending space of the tab will be reduced, making it impossible for the tab to be bent to a suitable position, thereby affecting the shelling process of the entire core (battery cell), and making it difficult to put the core into the shell.

[0047] In view of the above problems, the technical solution of this case is: the tab welding area 22 is bent in the direction close to the pole 1, so that the tab welding area 22 and the side facing away from the pole 1 form a sinking portion 23. The specific structure is as follows: Figure 6-7 As shown;

[0048] It should be noted that if Figure 6 As shown, the tab welding area 22 is bent toward the pole 1, that is, the tab welding area 22 is protruded toward the pole 1. Figure 6The pole 1 faces the direction, and the pole tab welding area 22 is also bent in this direction; the side of the pole 1 facing away, that is, the side where the adapter 2 is not connected to the pole 1, the pole tab welding area 22 forms a sinking portion 23 on this side. The pole tab welding area 22 is used to connect the pole tab, but due to the reduction in the height of the lower plastic, the height of the pole area 21 is reduced. When the lower surface of the pole area 21 connected to the pole tab is located in the same plane, the bending space of the pole tab will be reduced, thereby affecting the bending of the pole tab, and further causing difficulty in the winding core into the shell; therefore, in this case, the pole tab welding area 22 and the side facing away from the pole 1 are formed with a sinking portion 23, and there is a height difference between the sinking portion 23 and the pole tab welding area 22, so that when the pole area 21 follows the height reduction of the lower plastic, the bending space of the pole tab will not be reduced or will not be reduced too much, thereby ensuring the normal bending of the pole tab.

[0049] like Figure 7 As shown, as one of the optional embodiments of the present case, the pole 1 is arranged on the upper surface of the pole area 21;

[0050] The lower surface of the pole area 21 is lower than the lower surface of the tab welding area 22, wherein the upper surface and the lower surface of the adapter plate 2 are opposite to each other;

[0051] It should be understood that, in conjunction with the instructions Figure 6 , define the side of the rectangular adapter 2 connected to the pole 1 as the upper surface, the upper surface and the lower surface of the adapter 2 are opposite surfaces, then the other side of the adapter 2 away from the pole area 21 is the lower surface, and the lower surface of the pole area 21 is lower than the lower surface of the pole lug welding area 22; it should be understood that to make the lower surface of the pole area 21 lower than the lower surface of the pole lug welding area 22 is not only achieved by forming a sinking portion 23 on the side of the pole 1 facing away from the pole, but also by making the pole area 21 and the pole lug area of ​​the adapter 2 have different thicknesses, or making the pole area 21 or the pole lug welding area 22 concave in the corresponding direction, so that the lower surface of the pole area 21 can be lower than the lower surface of the pole lug welding area 22, and the bending space of the pole lug is not reduced or not reduced too much, so as to ensure the normal bending of the pole lug. Specifically, the side of the pole area 21 connected to the pole 1 body is defined as the upper surface, and the upper surface of the pole area 21 is specifically as follows: Figure 6 The first upper surface 21b shown in FIG. 1 is a first upper surface 21b, and the lower surface of the pole region 21 is specifically as follows Figure 6The first lower surface 21a is shown, the upper surface of the pole lug welding area 22 is the second upper surface 22b, and the lower surface of the pole lug welding area 22 is the second lower surface 22a; and the first lower surface 21a of the pole column area 21 is lower than the second lower surface 22a of the pole lug welding area 22. In this way, when the pole column area 21 follows the lower plastic height to decrease, since the second lower surface 22a of the pole lug welding area 22 is higher than the first lower surface 21a of the pole column area 21, the bending space of the pole lug will not be reduced or will not be reduced too much, thereby ensuring the normal bending of the pole lug.

[0052] like Figure 5 or Figure 6 or Figure 7 As shown, as one of the optional embodiments of the present case, the two pole tab welding areas 22 are symmetrically arranged about the pole 1.

[0053] It should be noted that the symmetrical design can make the current evenly distributed between the two pole ear welding areas 22 of the battery, which helps to reduce the unevenness of the current distribution and avoid unilateral overload, thereby improving the overall performance and life of the battery. The symmetrical setting can reduce the resistance inconsistency caused by uneven current and optimize the electrical performance. The uniform current path helps to improve the conductivity of the battery, reduce the internal resistance, and thus improve the charging and discharging efficiency of the battery. The symmetrical arrangement can effectively disperse the mechanical stress applied to the adapter 2 and reduce the structural deformation or damage caused by stress concentration; the symmetrical design helps to improve the heat dissipation performance of the adapter 2; because the heat distribution is more uniform, the risk of local overheating can be effectively reduced, and the overall thermal management effect of the battery can be improved.

[0054] like Figure 1 or Figure 4 or Figure 7 As shown in FIG. 1 , as one of the optional embodiments of the present invention, the adapter sheet 2 is a rectangular structure, and the pole column area 21 and the two tab welding areas 22 are arranged along the length direction of the adapter sheet 2. For example, Figure 7 The B side of the adapter sheet 2 is the long side direction, and the A side is the width direction.

[0055] It should be noted that by making the adapter 2 a rectangular structure, and making the pole area 21 and the two pole tab welding areas 22 arranged along the length direction of the adapter 2, it is conducive to further shortening the current path between the pole area 21 and the pole tab welding area 22, ensuring that the current conduction from the pole area 21 to the two pole tab welding areas 22 is more uniform, which helps to reduce resistance and current loss, and improve the overall electrical performance of the battery. The adapter 2 with a rectangular structure helps the pole tab welding area 22 to bend in the direction close to the pole 1, and forms a sink 23 on the side of the pole 1 facing away from the pole tab welding area 22. For example, the rectangular adapter 2 structure is easy to produce and process through standard manufacturing processes. The rectangular design of the adapter 2 makes the processes such as cutting, stamping and mold forming simpler and more consistent, and improves production efficiency. Aligning the pole area 21 and the pole tab welding area 22 along the length direction of the adapter 2 makes it easier to ensure the docking accuracy of each area during assembly, simplifies the assembly process, reduces assembly errors, and improves the consistency of the overall product.

[0056] As one of the optional embodiments of the present invention, the ratio of the length to the width of the adapter sheet 2 is in the range of 1.5 to 5. Specifically, Figure 8 As shown, the ratio of the long side dimension L to the wide side dimension W ranges from 1.5 to 5.

[0057] It should be noted that the length ratio of the long side L to the wide side W is between 1.5 and 5, which helps to enhance its mechanical strength and stability, helps to disperse the force applied to the adapter 2, and reduces the risk of bending and deformation; this size ratio design makes the overall utilization of the adapter 2 higher when connecting the pole 1 and the pole ear, which is conducive to a more reasonable layout of the pole ear welding area 22 and the pole 1; at the same time, the adapter 2 with a size ratio between 1.5 and 5 performs well in heat dissipation performance, helps to evenly distribute heat, and reduces the risk of local overheating.

[0058] As one of the optional embodiments of this case, Fig. 9 As shown, the pole area 21 and the tab welding area 22 are equal in size along the width direction of the adapter 2, that is, the sizes of W1 and W2 are equal, which can ensure the uniform distribution and symmetrical conduction of current on the adapter 2, which not only optimizes the current path, reduces resistance, and improves the electrical efficiency of the battery, but also enhances the mechanical stability of the adapter 2 and reduces the risk of deformation caused by uneven stress. In addition, equal sizes help simplify the manufacturing and assembly process, ensure the consistency of each area, and improve the stability and reliability of the overall product.

[0059] As one of the optional embodiments of the present invention, the size ratio of the pole area 21 to the tab welding area 22 along the length direction of the adapter plate 2 is in the range of 0.5 to 3. Fig. 9As shown, that is, the ratio of size L2 to size L1 ranges from 0.5 to 3, which helps to optimize the mechanical strength of the structure while ensuring uniform current distribution; it is beneficial to maintain a suitable size ratio between the pole area 21 and the pole tab welding area 22, and avoid that one of the pole area 21 and the pole tab welding area 22 is too large or too small, which affects the performance and manufacturing cost of the adapter 2.

[0060] As an optional embodiment of the present invention, the shape of one of the four corners of the adapter plate 2 is different from the shape of the other three corners.

[0061] Specific as Figure 4 As shown, one of the four corners of the adapter 2 is a cut corner 3, and the other three corners are arc chamfer structures. The combination of the cut corner 3 and the arc chamfer can provide obvious visual and tactile differences, allowing users or automated assembly systems to easily identify the correct direction of the adapter 2. This intuitive identification can reduce the possibility of assembly errors. Through the asymmetric design, especially the introduction of the cut corner 3, it can be ensured that the adapter 2 can only be installed in the correct direction during assembly. This restrictive design helps to prevent assemblers or systems from installing the adapter 2 in the wrong direction, thereby improving assembly efficiency and quality. The selection of the cut corner 3 and the arc chamfer structure may also be related to the specific function of the adapter 2. For example, the cut corner 3 can be used for specific mechanical locking or alignment functions, while the arc chamfer can provide a comfortable feel or compatibility with other components.

[0062] In order to achieve the above-mentioned purpose and other related purposes, the utility model provides a battery cover assembly, including the above-mentioned electrical connector, so that the battery cover assembly with the electrical connector is also within the protection scope of this case.

[0063] In order to achieve the above-mentioned purpose and other related purposes, the utility model provides a battery, including the above-mentioned electrical connector, so that the battery with the electrical connector is also within the protection scope of this case.

[0064] In order to achieve the above-mentioned purpose and other related purposes, the utility model provides an electronic device, including the battery, so that the electronic device having the electrical connector is also within the protection scope of the present case.

[0065] In summary, the utility model effectively overcomes some practical problems in the prior art and thus has high utilization value and use significance.

[0066] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. An electrical connector, characterized in that: include: Pole; A transfer plate is formed integrally with the pole, the transfer plate is a rectangular structure, and has a pole area and two pole ear welding areas; The pole is arranged in the pole area, and the two pole lug welding areas are respectively located on both sides of the pole.

2. The electrical connector according to claim 1, characterized in that: The tab welding area is bent toward the direction close to the pole, so that the tab welding area and the side opposite to the pole form a sunken platform.

3. The electrical connector according to claim 1, characterized in that: The pole is arranged on the upper surface of the pole area; The lower surface of the pole region is lower than the lower surface of the tab welding region, wherein the upper surface and the lower surface of the adapter are surfaces opposite to each other.

4. The electrical connector according to claim 1, characterized in that: The two pole lug welding areas are symmetrically arranged about the pole.

5. The electrical connector according to claim 1, characterized in that: The adapter plate is a rectangular structure, and the pole area and the two tab welding areas are arranged along the length direction of the adapter plate.

6. The electrical connector according to claim 5, characterized in that: The ratio of the length to the width of the adapter sheet is in the range of 1.5 to 5.

7. The electrical connector according to claim 5, characterized in that: The dimensions of the pole area and the tab welding area along the width direction of the adapter are equal.

8. The electrical connector according to claim 5, characterized in that: The size ratio of the pole area to the tab welding area along the length direction of the adapter plate ranges from 0.5 to 3.

9. The electrical connector according to claim 1, characterized in that: The shape of one of the four corners of the adapter plate is different from the shapes of the other three corners.

10. A battery, characterized in that: The invention comprises the electrical connector according to any one of claims 1 to 9.

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