CN216818553U - Battery guide structure - Google Patents

Abstract

The application discloses battery guide vane structure for weld in the electrode of battery end. The battery lead structure comprises a lead body, a connecting part and at least two electrode connecting sheets. The connecting part extends from the inner edge of the guide sheet body to the inner in an inclined manner, the electrode connecting sheet extends from the inner edge of the connecting part to the inner in an inclined manner, and only one end of the electrode connecting sheet is connected with the connecting part. The electrode connecting sheet is provided with at least one salient point structure which protrudes out of one side of the electrode connecting sheet. So, when the battery guide vane structure is carrying out spot welding operation, can more effectively laminate in the electrode end of electromagnetism, improve spot welding quality, avoid droing and contact failure scheduling problem.

Description

Battery guide structure

technical field

The present application relates to a battery lead structure, in particular to a lead structure for electrically connecting batteries.

Background technique

The electrode ends of the batteries in the prior art are provided with battery conductors, and these battery conductors are connected and integrated with other wires, so that the batteries can be electrically connected to other electrical appliances through these wires and provide required electrical energy. However, most of the existing battery conductors are mostly flat sheets, so that during the spot welding process, due to the insufficient force between the spot welder and the battery conductors, the battery conductors cannot be completely spot welded with the electrodes of the battery. contact, resulting in poor battery contact or even the problem of battery guides falling off.

Therefore, how to overcome the above-mentioned defects by improving the structure design has become one of the important issues to be solved in this field.

Utility model content

The technical problem to be solved by the present application is to provide a battery guide plate structure in view of the deficiencies of the prior art, which can completely spot-weld contact with the electrodes of the battery, and solve the problems of poor battery contact and falling off of the battery lead plate.

In order to solve the above-mentioned technical problems, the present application provides a battery lead structure for welding to the electrode end of the battery. The battery lead structure includes a lead body, a connecting portion and at least two electrode connecting plates. The guide vane body is in an annular shape, and the outer periphery of the guide vane body extends outward to form at least one fixing portion, and defines a longitudinal direction along the fixing portion; the connecting portion is annular, and the connecting portion is inclined inward from the inner edge of the guide vane body extension; at least two electrode connecting pieces respectively extend inward from the inner edge of the connecting portion, each electrode connecting piece has at least one bump structure, and the bump structure protrudes from one side of the electrode connecting piece; wherein, the electrode connecting piece has only one One end is connected with the connecting part, and the other end of the electrode connecting piece forms a free end; wherein the electrode connecting piece and the guide piece body are not located on the same plane.

Optionally, the at least two electrode connecting pieces are respectively located on both sides of the inner diameter of the connecting portion, and the at least two electrode connecting pieces extend in opposite directions, and there is a distance between the at least two electrode connecting pieces.

Optionally, the lengthwise direction is parallel to a diameter of the connecting portion.

Optionally, the ratio of the spacing to the length of the electrode connecting piece is 1:10.

Optionally, the diameter of the inner edge of the connecting portion is smaller than or equal to the diameter of the electrode end of the battery.

Optionally, the ratio of the length to the width of the electrode connecting piece is 8:3.

Optionally, the at least two electrode connection sheets have two bump structures, and the two bump structures protrude from a side away from the lead body.

Optionally, the battery lead structure has four electrode connecting pieces, and any two electrode connecting pieces are symmetrical to each other.

Optionally, the ratio of the length and width of the electrode connecting piece to the inner edge of the bump structure to the connecting portion is 4.3:2.3:2.7.

Optionally, the material of the at least two electrode connecting sheets is selected from the group consisting of copper metal, nickel metal and copper sulfide.

One of the beneficial effects of the present invention is that the battery guide plate structure provided by the present application can connect the electrodes through the technical feature that only one end of the electrode connecting plate is connected to the connecting portion so that the other end of the electrode connecting plate is a free end. When spot welding is performed between the bump structure on the chip and the electrode terminal on the battery, the quality of spot welding is improved, the connection between the battery guide plate and the electrode terminal of the battery is stabilized, the insufficient tension caused by the weak spot welding is avoided, and the falling off and poor contact are solved. The problem.

For a further understanding of the features and technical content of the present application, please refer to the following detailed descriptions and drawings related to the present application. However, the drawings provided are only for reference and description, and are not intended to limit the present application.

Description of drawings

FIG. 1 is a three-dimensional schematic diagram of the structure of the battery guide plate according to the first embodiment of the present application.

FIG. 2 is a schematic plan view of the structure of the battery guide plate according to the first embodiment of the application.

FIG. 3 is a schematic cross-sectional view taken along line III-III of FIG. 2 .

FIG. 4 is a schematic diagram illustrating the connection between the battery guide plate structure and the electrode terminal of the battery according to the first embodiment of the present application.

FIG. 5 is a three-dimensional schematic diagram of the structure of the battery guide plate according to the second embodiment of the present application.

FIG. 6 is a schematic plan view of the structure of the battery guide plate according to the second embodiment of the present application.

FIG. 7 is a schematic cross-sectional view along the line VII-VII of FIG. 6 .

Detailed ways

The following are specific specific examples to illustrate the embodiments of the "battery guide structure" disclosed in the present application, and those skilled in the art can understand the advantages and effects of the present application from the content disclosed in this specification. The present application can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of the present application. In addition, the drawings of the present application are only for simple schematic illustration, and are not drawn according to the actual size, and are stated in advance. The following embodiments will further describe the related technical contents of the present application in detail, but the disclosed contents are not intended to limit the protection scope of the present application. In addition, the term "or", as used herein, should include any one or a combination of more of the associated listed items, as the case may be.

first embodiment

Referring to FIGS. 1 to 4 , the first embodiment of the present application provides a battery lead structure 100 a, which can be used for welding to the electrode end BE of the battery B. As shown in FIG. Battery B can be a 18650 type lithium battery, and can be used in electric vehicles, electric drills or other electric tools. Batteries are not within the scope of the present application, so they will not be described in detail. In addition, the present application is not limited to the 18650 type lithium battery, and can also be applied to other types of cylindrical batteries, as long as the battery guide structure is proportionally reduced or enlarged according to the size of the battery.

The battery lead structure 100a includes a lead body 11, a connecting portion 13 and at least two electrode connecting plates 15a. The guide vane body 11 is in a ring shape, the guide vane body 11 can be polygonal or circular, and the ring shape of the guide vane body 11 is not limited thereto. It should be noted that, in this embodiment, the ring shape of the guide vane body 11 is described as a circle. The outer periphery of the guide body 11 extends outward in two opposite directions to form at least one fixing portion 111 . In this embodiment, two fixing portions 111 are used for description. The two fixing portions 111 extending outward in opposite directions define a longitudinal direction LD (as shown in FIG. 2 ). At least one fixing portion 111 is used to fix the battery guide structure 100a on the battery B. As shown in FIG. The material of the electrode connecting piece 15a, the lead body 11 and the connecting portion 13 can be selected from, for example, copper metal, nickel metal or copper sulfide.

The connecting portion 13 is in a ring shape, and the connecting portion 13 can be a polygon or a circle, and the ring shape of the connecting portion 13 is not limited thereto. It should be noted that, in this embodiment, the ring shape of the connecting portion 13 is described as a circle. The connecting portion 13 is inclined and extended inward from the inner edge of the guide body 11 . That is to say, the connecting portion 13 and the guide body 11 are not located on the same plane (as shown in FIG. 3 ). The connecting portion 13 has a height difference H, and the height difference H is the vertical distance between the lead body 11 and the electrode connecting piece 15a.

As shown in FIG. 3 , the connecting portion 13 has an inclination θ, the inclination θ of the connecting portion 13 is the angle between the guide body 11 and the connecting portion 13 , and the inclination θ ranges from 90 degrees to 150 degrees. In between, the slope θ is preferably 135 degrees. When the inclination θ is 90 degrees, both the guide body 11 and the connecting portion 13 are perpendicular to each other. The diameter IL of the inner edge of the connecting portion 13 is smaller than or equal to the diameter BEL of the electrode end BE of the battery B. That is, the connection portion 13 must be able to correspond to the electrode terminal BE of the battery B (as shown in FIG. 4 ).

2 and FIG. 3 again, the two electrode connecting pieces 15a respectively extend inward from the inner edge of the connecting portion 13, and the two electrode connecting pieces 15a are respectively located on both sides of the inner edge diameter IL of the connecting portion 13. The diameter IL of the inner edge of the portion 13 can be parallel to the longitudinal direction LD of the lead body 11, so that the electrode connecting piece 15a and the lead body 11 are as shown in FIG. A separation groove S1, the separation groove S1 is S-shaped. In addition, the diameter IL of the inner edge of the connecting portion 13 may not be parallel to the longitudinal direction LD of the lead body 11 , so that the extending direction of the electrode connecting plate 15 a is perpendicular to the longitudinal direction LD of the lead body 11 . The two electrode connecting pieces 15a extend inward in opposite directions.

In this embodiment, the two electrode connecting pieces 15a are not connected, and there is a distance D between the two electrode connecting pieces 15a (as shown in FIG. 1 ). The ratio of the distance D to the length L and the width W of the electrode connecting piece 15a is 0.8:8:3. That is, the ratio of the distance D to the length of the electrode connecting piece 15a is 1:10, and the ratio of the length L to the width W of the electrode connecting piece 15a is 8:3. In a preferred embodiment, the ratio of the distance D to the length of the electrode connecting piece 15a can be 1:8, and the ratio of the length L to the width W of the electrode connecting piece 15a is 8:2. Furthermore, the ratio of the height difference H to the distance D is between 7/8 and 1. The preferred distance D between the two electrode connecting pieces 15a is 0.8mm (millimeters), and the preferred length L and width W of the electrode connecting pieces 15a are 8mm (millimeters) and 3mm (millimeters) respectively, and the height difference H is between Between 0.7mm (mm) and 0.8mm (mm). The thickness of the electrode connecting piece 15a is about 0.2 mm. The ratio of the inner circumference of the connecting portion 13 to the length L of the electrode connecting piece 15a is 11.5:8, and the preferred value of the inner circumference of the connecting portion 13 is 11.5 mm.

Only one end of the electrode connecting piece 15a is in contact with the connecting portion 13, that is, the other end of the electrode connecting piece 15a forms a free end. When a spot welding machine (not shown) performs spot welding on the electrode connecting piece 15a and the electrode end BE of the battery B, since only one end of the electrode connecting piece 15a is in contact with the connecting portion 13, the free end of the electrode connecting piece 15a can be Through the fulcrum (that is, where the electrode connecting piece 15a and the connecting part 13 meet), the electrode terminal BE of the battery B is approached downwards, so as to stabilize the connection between the battery guide piece structure 100a and the electrode terminal BE of the battery B, and avoid falling off and poor contact. The problem.

Each electrode connecting piece 15a may have at least one bump structure 151, and the number of bump structures 151 may also be one, two, three, or more than three. The bump structures 151 protrude from the electrode connecting piece 15a. one side and the bump structure 151 protrudes from the side away from the guide body 11 . In other words, the bump structure 151 protrudes from the side close to the electrode end BE of the battery B, so that the spot welding operation between the bump structure 151 and the electrode end BE can be more effective. In this embodiment, each electrode connecting piece 15a has two bump structures 151 .

Second Embodiment

This embodiment is similar to the above-mentioned first embodiment, so the similarities between the two embodiments will not be repeated (eg, the guide plate body 11 , the connecting portion 13 , and the bump structure 151 ).

Referring to FIGS. 5 to 7 , the present embodiment provides a battery lead structure 100b, which includes a lead body 11, a connecting portion 13 and four electrode connecting plates 15b. The four electrode connecting pieces 15b respectively extend inward from the inner edge of the connecting portion 13 . Any two electrode connecting pieces 15b of the four electrode connecting pieces 15b may be symmetrical with each other (as shown in FIG. 5 ), and the four electrode connecting pieces 15b are not connected. The four electrode connecting pieces 15b form a separation groove S2 on the inner edge of the connecting portion 13, and the separation groove S2 is in the shape of a plum blossom. The material of the electrode connecting piece 15b can be selected from, for example, copper metal, nickel metal or copper sulfide.

The connecting portion 13 has a height difference H, and the height difference H is the vertical distance between the lead body 11 and the electrode connecting piece 15b.

Each electrode connection piece 15b has at least one bump structure 151 . There is a distance DD between the bump structure 151 and the inner edge of the connecting portion 13 . The ratio of the length L, the width W, and the distance DD of the electrode connecting piece 15b is 4.3:2.4:2.7. In a preferred embodiment, the ratio of the length L, the width W and the distance DD of the electrode connecting piece 15b may be 4.2:2.1:2.5. Wherein, the preferred length L and width W of the electrode connecting piece 15b are 4.3 mm and 2.4 mm, respectively, and the optimum value of the distance DD is 2.7 mm. Therefore, when the spot welding operation is performed, under the conditions that the distance DD is 2.7 mm and the width W is 2.4 mm, the bump structure 151 on the electrode connecting sheet 15b can be ensured to be effectively spot welded with the electrode terminal B of the battery B .

Beneficial Effects of Embodiments

One of the beneficial effects of the present invention is that the battery guide plate structure provided by the present application can connect the electrodes through the technical feature that only one end of the electrode connecting plate is connected to the connecting portion so that the other end of the electrode connecting plate is a free end. When spot welding is performed between the bump structure on the chip and the electrode terminal on the battery, the quality of spot welding is improved, the connection between the battery guide plate and the electrode terminal of the battery is stabilized, the insufficient tension caused by the weak spot welding is avoided, and the falling off and poor contact are solved. The problem.

The contents disclosed above are only optional and feasible embodiments of the present application, and are not intended to limit the scope of the patent application of the present application. Therefore, any equivalent technical changes made by using the contents of the description and drawings of the present application are included in the scope of the present application. within the scope of the patent application.

Claims (10)

1. a battery guide plate structure, for being welded on the electrode end of battery, it is characterized in that, described battery guide plate structure comprises: a guide vane body, the guide vane body is in the shape of an annular shape, the outer periphery of the guide vane body extends outward to form at least one fixing portion, and defines a longitudinal direction along the fixing portion; a connecting portion, the connecting portion is in the shape of a ring, and the connecting portion extends obliquely inward from the inner edge of the guide body; and at least two electrode connecting pieces, respectively extending inward from the inner edge of the connecting portion, each of the electrode connecting pieces having at least one bump structure, and the bump structure protruding from one side of the electrode connecting piece; Wherein, only one end of the electrode connecting piece is connected with the connecting portion, and the other end of the electrode connecting piece forms a free end; Wherein the electrode connecting piece and the guide piece body are not located on the same plane. 2 . The battery guide plate structure according to claim 1 , wherein the at least two electrode connecting pieces are respectively located on both sides of the inner edge diameter of the connecting portion, and the at least two electrode connecting pieces face 2. 3 . Extending in opposite directions, there is a distance between the at least two electrode connecting pieces. 3 . The battery guide structure of claim 2 , wherein the longitudinal direction is parallel to a diameter of the connecting portion. 4 . 4 . The battery guide plate structure according to claim 2 , wherein the ratio of the distance to the length of the electrode connecting plate is 1:10. 5 . 5 . The battery guide structure of claim 1 , wherein the diameter of the inner edge of the connecting portion is smaller than or equal to the diameter of the electrode end of the battery. 6 . 6 . The battery lead structure according to claim 1 , wherein the ratio of the length to the width of the electrode connecting piece is 8:3. 7 . 7 . The battery guide structure of claim 1 , wherein the at least two electrode connecting pieces have two bump structures, and the two bump structures protrude away from the guide body. 8 . side. 8 . The battery lead structure of claim 1 , wherein the battery lead structure has four electrode connecting plates, and any two electrode connecting plates are symmetrical to each other. 9 . 9 . The battery lead structure according to claim 8 , wherein the ratio of the length and width of the electrode connecting piece to the bump structure to the inner edge of the connecting portion is 4.3:2.3:2.7. 10 . 10 . The battery lead structure of claim 1 , wherein the material of at least two of the electrode connecting sheets is selected from the group consisting of copper metal, nickel metal and copper sulfide. 11 .

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