Electrode plate

Abstract

The utility model provides an electrode plate which comprises an electrode plate body and an access part which are integrally formed by sheet-shaped conductive materials, and the electrode plate body and the access part are sequentially arranged in the length direction of the sheet-shaped conductive materials. The access part is bent in a winding manner for multiple times to form a laminated part with a multi-layer structure, and all layers of the laminated part are attached to one another; the structure is convenient to transport, the problem that the lead is loosened and falls off when being extruded is solved, the thickness of the electrode plate can be reduced while effective over-current and over-voltage resistance is ensured, the cost is reduced, and heat dissipation is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of electrode sheets, and particularly relates to an electrode sheet. Background Art

[0002] An electrode sheet is an electronic component widely used in multiple fields, and is widely used in equipment such as air conditioners, new energy vehicles, medical treatment, beauty, sports rehabilitation heaters, and lithium batteries. When traditional electrode sheets are manufactured, after being stamped from raw materials, they are formed by welding or riveting with terminal leads. The electrode sheets formed in this way are not resistant to extrusion during transportation. Once extrusion occurs, there is a risk of the leads falling off and loosening through welding or riveting, posing a relatively large safety hazard. Because if the leads become loose, when the electrode sheet is connected to electricity for use, it is easy to cause current arcing, with a great safety risk of causing a fire. On the other hand, in order to ensure its ability to withstand overcurrent and overvoltage, traditional electrode sheets often have a relatively large thickness, resulting in more material consumption during production and manufacturing, higher costs, and poor heat dissipation effects. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide an electrode sheet that is convenient for transportation, will not cause problems such as lead loosening and falling off when being squeezed, and while ensuring effective resistance to overcurrent and overvoltage, can reduce the thickness of the electrode sheet, reduce costs, and facilitate heat dissipation.

[0004] The utility model provides an electrode sheet, which includes an electrode sheet body integrally formed by a sheet-shaped conductive material and an access part. The electrode sheet body and the access part are arranged in sequence along the length direction of the sheet-shaped conductive material; the access part forms a laminated part with a multi-layer structure after being bent in a winding manner for multiple times, and the layers of the laminated part are mutually attached.

[0005] Compared with the prior art, the present application has the following advantages: The lead design is removed from the electrode sheet body, and the external terminal is accessed through the bent part, which is convenient for transportation and will not cause problems such as lead loosening and falling off when being squeezed; moreover, due to the existence of the laminated part, because the laminated part increases the thickness and the contact area with the current in a disguised form through the way of being bent in a winding manner for multiple times, compared with the original riveting points or welding points, the contact area with the current is significantly increased, which can ensure effective resistance to overcurrent and overvoltage, and its thickness can increase its strength. Therefore, it is possible to make the electrode sheet body thinner, reduce costs, and facilitate heat dissipation.

[0006] In a possible implementation manner, a fixing hole penetrating through the upper and lower ends for fixing with an external plug-in terminal or a plug spring terminal is integrally formed on the laminated part.

[0007] Compared with the prior art, the fixing hole with the above structure can form a fixation with the clamping part of the external terminal and is not easy to fall off during connection and use.

[0008] In a possible implementation, the electrode sheet body has a strip-shaped structure, and the access part is fixed at one end in the length direction of the electrode sheet body.

[0009] Compared with the prior art, the electrode sheet with the above structure can be conveniently used in a PTC heater.

[0010] In a possible implementation, the access part includes a plurality of bending segments sequentially arranged along the length direction of the electrode sheet body, and the stacked part is formed by sequentially passing through winding bends in the direction of the electrode sheet body through each bending segment.

[0011] Compared with the prior art, the area increased by the winding bends of the plurality of bending segments adopting the above technical solution can effectively ensure overcurrent and overvoltage.

[0012] In a possible implementation, the width of the access part is less than or equal to the width of the electrode sheet body.

[0013] Compared with the prior art, adopting the above technical solution can reduce the volume of the bending part, reduce the material cost, and still ensure that the area is larger relative to the welding point and the riveting point, and has little influence on its ability to resist overcurrent and overvoltage to a certain extent.

[0014] In a possible implementation, both end faces in the length direction of the electrode sheet body are provided with rounded transition surfaces.

[0015] Compared with the prior art, adopting the above technical solution can have a certain buffering effect when being squeezed and is not easy to cut hands during use. Brief Description of the Drawings

[0016] Figure 1 It is a three-dimensional schematic diagram of the present utility model;

[0017] Figure 2 It is a side view after the bending part of the present utility model is bent;

[0018] Figure 3 It is a top view when the bending part of the present utility model is unfolded;

[0019] Description of the Reference Numerals:

[0020] 1 - Electrode sheet body, 2 - Access part, 3 - Fixing hole, 21 - Stacked part, 211 - Bending segment. Detailed Embodiments

[0021] First of all, those skilled in the art should understand that these embodiments are only used to explain the technical principles of the embodiments of the present application and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can adjust them as needed to adapt to specific application scenarios.

[0022] In the description of the embodiments of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

[0023] In the embodiments of the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower horizontal height than the second feature.

[0024] The following further describes the present application in detail with reference to the accompanying drawings and specific embodiments. It should be noted that the Figure 3 The fixing hole 3 is not shown in the exploded view in the accompanying drawings because during the production process, after the access portion 2 is bent in a winding manner multiple times to form the stacked portion 21 with a multi-layer structure, the stacked portion 21 is integrally punched to form the fixing hole 3.

[0025] The embodiments of the present application disclose an electrode sheet, including an electrode sheet body 1 and an access portion 2 integrally formed by a sheet-shaped conductive material. The electrode sheet body 1 and the access portion 2 are arranged in sequence along the length direction of the sheet-shaped conductive material. The access portion 2 is bent in a winding manner multiple times to form a stacked portion 21 with a multi-layer structure, and the layers of the stacked portion 21 are mutually adhered.

[0026] In this embodiment, the access portion 2 and the electrode sheet body 1 are both made of aluminum, copper, stainless steel or nickel, or are made of any two or more alloys of aluminum, copper, stainless steel and nickel. This ensures effective conductivity while facilitating one-piece molding, making the connection between the access portion 2 and the electrode sheet body 1 more secure and preventing the problem of falling off or loosening due to squeezing. When in use, the access portion 2 is used to access external terminals, such as 250 terminals, 187 terminals, 110 terminals and other plug-in terminals or spring terminals. The lead design is removed from the electrode sheet body 1, and the external terminal is directly connected through the access portion 2, which is convenient for transportation and will not cause the lead to loosen and fall off due to squeezing; moreover, due to the existence of the access portion 2, because the access portion 2 is wound and bent multiple times in a disguised manner to increase the thickness and the contact area with the current, the area is significantly increased compared to the original welding points and riveted points, which can ensure effective resistance to over-current and over-voltage, and its thickness can increase its strength, so it is easy to make the electrode sheet body 1 thin. In this embodiment, the thickness of the electrode sheet body 1 can be 1.5 mm, which reduces costs and facilitates heat dissipation.

[0027] In some embodiments, the laminated portion 21 is provided with a fixing hole 3 that runs through the upper and lower ends and is used to fix with an external blade terminal or a plug-in spring terminal. A clamping piece needs to be provided on the external blade terminal or the plug-in spring terminal so that the access portion 2 is fixed in the fixing hole 3 by the clamping piece when docking with the external blade terminal or the plug-in spring terminal. The external blade terminal or the plug-in spring terminal can be integrally formed with the clamping piece when it is manufactured. This is not the focus of this application, so it will not be described in detail.

[0028] In some embodiments, the electrode sheet body 1 is in a long strip structure, and the access portion 2 is fixed at one end in the length direction of the electrode sheet body 1. The long strip structure of the electrode sheet body 1 can be easily used in a PTC heater. It should be noted that this application is mainly used in PTC ceramic electric heaters.

[0029] In some embodiments, the access portion 2 includes a plurality of bending segments 211 sequentially arranged along the length direction of the electrode sheet body 1, and the stacking portion 21 is formed by each bending segment 211 being sequentially bent in a winding manner toward the electrode sheet body 1. In this embodiment, there may be five bending segments 211, and the five bending segments 211 are sequentially bent in a winding manner toward the electrode sheet body 1 starting from a bending segment 211 away from the electrode sheet body 1, so that the five bending segments 211 are formed as shown in the attached figure. Figure 2 The stacked portion 21 of the wound structure shown in the figure can effectively ensure the resistance to overcurrent and overvoltage and ensure strength by the thickness and increased area formed by winding and bending, and the access portion 2 will not be too large in volume and thickness to affect the overall weight of the electrode sheet body 1.

[0030] In some embodiments, the width of the access portion 2 is less than or equal to the width of the electrode sheet body 1. When the width of the access portion 2 is less than the width of the electrode sheet body 1, the volume of the access portion 2 can be reduced, reducing the material cost. Moreover, compared with the original riveting points and welding points, the area is still larger, and the impact on its ability to resist overcurrent and overvoltage is relatively small. Those skilled in the art can flexibly adjust the width of the access portion 2 according to the actual situation.

[0031] In some embodiments, both end faces in the length direction of the electrode sheet body 1 are provided with rounded corner transition surfaces. The rounded corner transition surfaces have a certain buffering effect when being squeezed and are not easy to cut hands during use.

[0032] In the description of the embodiments of the present application, it should be noted that in the description of the present application, the terms indicating directions or positional relationships such as "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.

[0033] In the description of the present application, the descriptions referring to terms such as "one embodiment", "some embodiments", "in this embodiment", "specific examples", or "some examples" etc. mean that the specific features, mechanisms, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0034] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in the present application should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An electrode sheet, characterized in that, It includes an electrode piece body (1) and an access part (2) integrally formed by a sheet-shaped conductive material. The electrode piece body (1) and the access part (2) are arranged in sequence along the length direction of the sheet-shaped conductive material. The access part (2) forms a laminated part (21) with a multi-layer structure after being bent in a winding manner for multiple times, and the layers of the laminated part (21) are attached to each other.

2. The electrode sheet according to claim 1, characterized in that, A fixing hole (3) that penetrates through the upper and lower ends for fixing with an external plug-in terminal or a plug spring terminal is integrally formed on the laminated part (21).

3. The electrode sheet according to claim 1 or 2, characterized in that, The electrode piece body (1) has a long strip-shaped structure, and the access part (2) is fixed at one end in the length direction of the electrode piece body (1).

4. The electrode sheet according to claim 3, characterized in that, The access part (2) includes a plurality of bending segments (211) arranged in sequence along the length direction of the electrode piece body (1), and the laminated part (21) is formed by successively winding and bending each of the bending segments (211) towards the direction of the electrode piece body (1).

5. The electrode sheet according to claim 3, characterized in that, The width of the access part (2) is less than or equal to the width of the electrode piece body (1).

6. The electrode sheet according to claim 3, characterized in that, Both end faces in the length direction of the electrode piece body (1) are provided with rounded transition surfaces.

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