Cylindrical battery top cover electric connection structure

Abstract

The utility model relates to the technical field of cylindrical batteries, in particular to a cylindrical battery top cover electric connection structure which comprises a battery body, a positive electrode end cover is arranged at the upper end of the battery body, a protrusion is arranged in the center of the positive electrode end cover, and a positive electrode lug plate is arranged on the protrusion of the positive electrode end cover. The surface of the positive electrode lug plate penetrates through the interior of the positive electrode end cover, first wiring holes penetrating through the interior of the positive electrode lug plate are formed in the surface of the positive electrode lug plate, and the first wiring holes are symmetrically distributed in the surface of the positive electrode lug plate by taking the center point of the positive electrode end cover as the center point; and the notches are symmetrically distributed by taking the center point of the negative electrode end cover as the center. Through the positive end cover and the negative end cover which are arranged on the battery body, when the battery is placed in a battery holder for normal installation, the power-on stability can be ensured, the positive end cover is provided with a bulge, and the negative end cover is of a plane structure, so that the distinguishing of a positive electrode and a negative electrode can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of cylindrical batteries, in particular to an electrical connection structure of a cylindrical battery top cover. Background Art

[0002] A battery is a device that converts chemical energy into electrical energy. It consists of one or more electrochemical cells, each of which consists of one or more electrodes (anode and cathode), an electrolyte, and one or more insulating membranes.

[0003] In a battery, an oxidation reaction occurs at the anode, releasing electrons, while a reduction reaction occurs at the cathode, accepting electrons. The electrolyte allows ions to move between the electrodes, and the insulating membrane prevents electrons from flowing directly, thereby generating a potential difference or voltage.

[0004] When a battery is connected to a circuit, electrons flow through the circuit from the anode to the cathode, creating an electric current. The voltage of the battery multiplied by the current intensity through the circuit defines the power output of the battery. Batteries are used in many applications, including portable electronic devices, automobiles, aircraft, and household and industrial uses.

[0005] Cylindrical cells are a common type of battery that have a cylindrical casing and end caps that provide electrical contacts. They are commonly used in a variety of portable electronic devices such as laptops, smartphones, and other small devices.

[0006] Cylindrical batteries are typically composed of one or more lithium-ion battery cells, each of which consists of a positive electrode, a negative electrode, and an electrolyte separator. The battery cells are packaged in a cylindrical metal casing that also serves as the negative electrode of the battery. The positive electrode is connected to the battery casing, while the negative electrode is connected to the end cap of the battery, creating a closed circuit.

[0007] At present, the shapes of batteries vary. The more common ones are cylindrical and cubic structures. The cylindrical battery structure includes the battery itself and two end covers for the positive and negative electrodes to supply power. However, this type of end cover only has the effect of contacting with the battery holder contacts and springs. If separate wiring and power supply are required, it is necessary to install an additional wiring structure on the battery or weld the conductive wire core to the ends of the positive and negative electrodes, which is time-consuming and labor-intensive, and is also prone to damage to the positive and negative terminals of the battery. Utility Model Content

[0008] The utility model aims to solve the above-mentioned shortcomings in the prior art and proposes a cylindrical battery top cover electrical connection structure.

[0009] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0010] A cylindrical battery top cover electrical connection structure is designed, comprising a battery body, wherein a positive terminal cover is arranged at the upper end of the battery body, and a protrusion is arranged at the center position of the positive terminal cover, a positive electrode terminal tab is arranged on the protrusion of the positive terminal cover, and the surface of the positive electrode terminal tab passes through the interior of the positive terminal cover, a first wiring hole is opened on the surface of the positive electrode terminal tab and passes through the interior thereof, and the first wiring holes are symmetrically distributed on the surface of the positive electrode terminal tab with the center point of the positive terminal cover, and a negative terminal cover is arranged at the lower end of the battery body, a notch is opened on the outer ring wall of the negative terminal cover, and the notches are symmetrically distributed with the center point of the negative terminal cover, and a second wiring hole is opened inside the notch and passes through the lower end face of the negative terminal cover.

[0011] In detail, a strip-shaped channel is arranged inside the protrusion of the positive terminal cover, and the inner wall surface of the strip-shaped channel is arranged to slide and closely contact with the outer wall surface of the positive electrode terminal piece.

[0012] In detail, a negative electrode conductive block is arranged at the lower end of the battery body, a groove is provided inside the negative terminal cover, and the inner wall surface of the groove is sleeved with the outer wall surface of the negative electrode conductive block.

[0013] In detail, a built-in groove is opened at the lower end of the strip channel, a clamping block is arranged inside the built-in groove, the outer wall surface of the clamping block slides tightly against the inner wall surface of the built-in groove, and the end surface of the clamping block is a curved surface structure.

[0014] In detail, a spring is arranged inside the built-in groove, and two ends of the spring are fixedly assembled with the inner wall of the built-in groove and the surface of the block respectively.

[0015] In detail, the lower end surface of the positive electrode terminal piece is provided with an arc-shaped groove with an inwardly concave structure, and the inner arc surface of the arc-shaped groove is slidably fitted with the curved surface end of the clamping block.

[0016] In detail, the negative electrode conductive block is a cylindrical structure, and an external thread is arranged on the outer ring wall of the negative electrode conductive block, and an internal thread is arranged on the inner wall surface of the groove of the negative terminal cover, and the internal thread and the external thread are threadedly connected with each other.

[0017] The design scheme proposed by the utility model has the following beneficial effects during application:

[0018] 1. The positive terminal cover and the negative terminal cover provided on the battery body can ensure the stability of power supply when the battery is placed in the battery holder for normal installation. The positive terminal cover is provided with a protrusion, and the negative terminal cover is a flat structure, which can ensure the distinction between the positive and negative poles.

[0019] 2. The positive terminal lug on the positive terminal cover cooperates with the first wiring hole to facilitate the connection of the wire core of the external wire with the positive terminal cover, and the positive terminal lug is docked with the arc groove through a retractable clamp block, which is convenient for the assembly and disassembly of the positive terminal lug and the positive terminal cover. A second wiring hole is provided in the notch opened on the negative terminal cover to facilitate the electrical connection of the external wire with the negative terminal cover, and the negative terminal cover is docked with the internal and external threads so that it can be disassembled and assembled with the negative conductive block, which is convenient and flexible to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is an oblique schematic diagram of the overall structure of the utility model;

[0022] Figure 3 It is a schematic diagram of the internal structure of the positive terminal cover and the negative terminal cover of the utility model;

[0023] Figure 4 It is an enlarged schematic diagram of point a of the utility model;

[0024] Figure 5 It is an enlarged schematic diagram of point b of the utility model.

[0025] In the figure: 10, battery body; 11, positive terminal cover; 12, positive electrode terminal piece; 13, first wiring hole; 14, negative terminal cover; 15, notch; 16, second wiring hole; 17, strip channel; 18, negative electrode conductive block; 20, built-in groove; 21, clamping block; 22, spring; 23, arc groove; 30, external thread; 31, internal thread. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0027] Reference Figure 1-Figure 5A cylindrical battery top cover electrical connection structure includes a battery body 10, a positive terminal cover 11 is provided at the upper end of the battery body 10, and a protrusion is provided at the center position of the positive terminal cover 11, a positive electrode terminal tab 12 is provided on the protrusion of the positive terminal cover 11, and the surface of the positive electrode terminal tab 12 passes through the interior of the positive terminal cover 11, and a first wiring hole 13 is opened on the surface of the positive electrode terminal tab 12 and passes through the interior thereof, and the first wiring holes 13 are symmetrically distributed on the surface of the positive electrode terminal tab 12 with the center point of the positive terminal cover 11, a negative terminal cover 14 is provided at the lower end of the battery body 10, a notch 15 is opened on the outer ring wall of the negative terminal cover 14, and the notch 15 is symmetrically distributed with the center point of the negative terminal cover 14, and a second wiring hole 16 is opened inside the notch 15 and passes through the lower end surface of the negative terminal cover 14.

[0028] It should be further explained that a strip channel 17 is provided inside the protrusion of the positive terminal cover 11, and the inner wall surface of the strip channel 17 is slidably and tightly arranged with the outer wall surface of the positive electrode terminal piece 12, which can facilitate the rapid positioning and docking of the positive terminal cover 11 and the positive electrode terminal piece 12.

[0029] It should be further explained that a negative conductive block 18 is arranged at the lower end of the battery body 10, a groove is opened inside the negative terminal cover 14, the inner wall surface of the groove is arranged to be sleeved with the outer wall surface of the negative conductive block 18, and the positive terminal cover 11, the negative terminal cover 14 and the negative conductive block 18 are all made of metal materials.

[0030] It should be further explained that a built-in groove 20 is opened at the lower end of the strip channel 17, and a clamping block 21 is arranged inside the built-in groove 20. The outer wall surface of the clamping block 21 slides tightly against the inner wall surface of the built-in groove 20, and the end surface of the clamping block 21 is a curved surface structure.

[0031] It should be further explained that a spring 22 is provided inside the built-in groove 20 , and the two ends of the spring 22 are respectively fixedly assembled with the inner wall of the built-in groove 20 and the surface of the block 21 , and the spring 22 can ensure the stability of the extension and resetting of the block 21 .

[0032] It should be further explained that the lower end surface of the positive electrode terminal piece 12 is provided with an arc-shaped groove 23 with an inwardly concave structure, and the inner arc surface of the arc-shaped groove 23 is slidably fitted with the curved surface end of the clamping block 21 .

[0033] It should be further explained that the negative electrode conductive block 18 is a cylindrical structure, and an external thread 30 is provided on the outer ring wall of the negative electrode conductive block 18, and an internal thread 31 is provided on the inner wall surface of the groove of the negative terminal cover 14, and the internal thread 31 and the external thread 30 are threadedly connected with each other.

[0034] Working method: When the battery body 10 needs to be used normally, the positive and negative poles of the battery body 10 and the battery holder can be connected through the positive terminal cover 11 and the negative terminal cover 14. When it is necessary to connect the wires and power on, the positive terminal piece 12 is inserted into the strip channel 17 in the protrusion of the positive terminal cover 11 and slid into it. During the insertion, the difference of the card block 21 is squeezed, so that the compression spring 22 enters the built-in groove 20, so that the positive terminal piece 12 can completely pass through the strip channel 17. When the position of the card block 21 corresponds to the position of the arc groove 23, the reset effect of the spring 22 causes the card block 21 to bounce into the arc groove 23, and the assembly of the positive terminal piece 12 and the positive terminal cover 11 can be completed.

[0035] When the negative electrode needs to be connected, the core of the wire can be directly passed through the second connection hole 16 for binding and docking. When the negative terminal cover 14 needs to be taken out for power connection, the negative terminal cover 14 is rotated, and the threads of the external thread 30 and the internal thread 31 are separated, so that the negative terminal cover 14 and the battery body 10 can be flexibly assembled and disassembled.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A cylindrical battery top cover electrical connection structure, comprising a battery body (10), characterized in that: The upper end of the battery body (10) is provided with a positive terminal cover (11), and a protrusion is provided at the center of the positive terminal cover (11); a positive electrode terminal tab (12) is provided on the protrusion of the positive terminal cover (11), and the surface of the positive electrode terminal tab (12) passes through the interior of the positive terminal cover (11); a first wiring hole (13) is provided on the surface of the positive electrode terminal tab (12) and passes through the interior thereof, and the first wiring hole (13) is symmetrically distributed on the surface of the positive electrode terminal tab (12) with respect to the center point of the positive terminal cover (11); the lower end of the battery body (10) is provided with a negative terminal cover (14), and a notch (15) is provided on the outer ring wall of the negative terminal cover (14), and the notch (15) is symmetrically distributed with respect to the center point of the negative terminal cover (14); and a second wiring hole (16) is provided inside the notch (15) and passes through the lower end surface of the negative terminal cover (14).

2. The cylindrical battery top cover electrical connection structure according to claim 1, characterized in that: A strip-shaped channel (17) is arranged inside the protrusion of the positive terminal cover (11), and the inner wall surface of the strip-shaped channel (17) is arranged to slide and tightly contact with the outer wall surface of the positive electrode terminal piece (12).

3. The cylindrical battery top cover electrical connection structure according to claim 1, characterized in that: A negative electrode conductive block (18) is arranged at the lower end of the battery body (10), and a groove is provided inside the negative terminal cover (14), and the inner wall surface of the groove is sleeved with the outer wall surface of the negative electrode conductive block (18).

4. The cylindrical battery top cover electrical connection structure according to claim 2, characterized in that: The lower end of the strip-shaped channel (17) is provided with a built-in groove (20), and a clamping block (21) is arranged inside the built-in groove (20). The outer wall surface of the clamping block (21) is slidably and tightly attached to the inner wall surface of the built-in groove (20), and the end surface of the clamping block (21) is a curved surface structure.

5. The cylindrical battery top cover electrical connection structure according to claim 4, characterized in that: A spring (22) is arranged inside the built-in groove (20), and two ends of the spring (22) are respectively fixedly assembled with the inner wall of the built-in groove (20) and the surface of the clamping block (21).

6. The cylindrical battery top cover electrical connection structure according to claim 5, characterized in that: The lower end surface of the positive electrode terminal piece (12) is provided with an arc-shaped groove (23) with an inwardly concave structure, and the inner arc surface of the arc-shaped groove (23) is slidably fitted with the curved surface end of the clamping block (21).

7. The cylindrical battery top cover electrical connection structure according to claim 3, characterized in that: The negative electrode conductive block (18) is a cylindrical structure, and an external thread (30) is provided on the outer ring wall of the negative electrode conductive block (18), and an internal thread (31) is provided on the inner wall surface of the groove of the negative terminal cover (14), and the internal thread (31) and the external thread (30) are threadedly connected to each other.

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