Alloy resistor based on copper-aluminum composite electrode

Abstract

The utility model provides a kind of alloy resistance based on copper-aluminum composite electrode, it includes: resistance body and two electrodes.Two electrodes are located at the two sides of resistance body respectively;Electrode includes red copper sheet and aluminium sheet, red copper sheet is connected with resistance body, and aluminium sheet is used to be electrically connected with external circuit;First joint part is equipped on red copper sheet, second joint part is equipped on aluminium sheet, first joint part and second joint part are mutually docked after pressing, to make red copper sheet and aluminium sheet be connected together, and form transition zone between red copper sheet and aluminium sheet.Electrode is jointly composed by red copper sheet and aluminium sheet, and the material cost of electrode is reduced;The part for being docked with circuit on electrode is aluminium sheet, and aluminium sheet has better bending resistance, so that electrode in alloy resistance is not easy to deform, to facilitate to change the size and shape of electrode according to actual use demand.The weight of electrode is reduced, so that alloy resistance is more portable.

Description

Technical Field

[0001] This utility model relates to the field of alloy resistor technology, and in particular to an alloy resistor based on a copper-aluminum composite electrode. Background Technology

[0002] In new energy vehicles or energy storage devices, alloy resistors are typically required for current detection. Existing alloy resistors use copper electrodes, which are soft and have low bending resistance, making them prone to deformation.

[0003] On the other hand, copper is a rare metal, and its price is affected by the international market, resulting in high production costs for electrode materials. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide an alloy resistor based on a copper-aluminum composite electrode, which improves the electrode's resistance to deformation and reduces the manufacturing cost of the alloy resistor.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] An alloy resistor based on a copper-aluminum composite electrode includes: a resistive element and two electrodes;

[0007] The two electrodes are located on opposite sides of the resistive element;

[0008] The electrode includes a copper sheet and an aluminum sheet, the copper sheet is connected to the resistive element, and the aluminum sheet is used for electrical connection with an external circuit.

[0009] The copper sheet has a first joint portion, and the aluminum sheet has a second joint portion. The first joint portion and the second joint portion are mated together and pressed together to connect the copper sheet and the aluminum sheet, forming a transition zone between the copper sheet and the aluminum sheet.

[0010] In one embodiment, the number of the first joint and the number of the second joint are both 1, and in the transition zone, the second joint rests on the first joint, or the first joint rests on the second joint.

[0011] In one embodiment, the cross-sections of the first joint and the second joint are wedge-shaped, the number of the first joint is 1, the number of the second joint is 2, and the first joint is embedded between the two second joints.

[0012] In one embodiment, both the first joint and the second joint have wedge-shaped cross sections, and both the first joint and the second joint are provided in multiples. In the transition zone, the first joint and the second joint are alternately stacked together.

[0013] In one embodiment, the first joint and the second joint have rectangular cross-sections, the number of the first joint is 1, the number of the second joint is 2, and the first joint is embedded between the two second joints.

[0014] In one embodiment, both the first joint and the second joint have rectangular cross-sections, and multiple first joints and second joints are provided. In the transition zone, the first joints and the second joints are alternately stacked together.

[0015] In one embodiment, the thickness of the transition zone, the thickness of the copper sheet, and the thickness of the aluminum sheet are the same.

[0016] In one embodiment, the aluminum sheet has mounting holes.

[0017] In one embodiment, the length of the copper sheet is less than the length of the aluminum sheet.

[0018] The aforementioned alloy resistor based on copper-aluminum composite electrodes has the following beneficial effects:

[0019] 1. The electrode is composed of both copper and aluminum sheets, which reduces the material cost of the electrode;

[0020] 2. The part of the electrode used to connect with the circuit is made of aluminum sheet. Aluminum sheet has better bending resistance, which makes the electrodes in the alloy resistor less prone to deformation, so that the size and shape of the electrodes can be changed according to actual use requirements.

[0021] 3. The weight of the electrodes has been reduced, making the alloy resistors lighter and more portable. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A front view of an alloy resistor based on a copper-aluminum composite electrode;

[0024] Figure 2This is a schematic cross-sectional view of an alloy resistor based on a copper-aluminum composite electrode.

[0025] Figure 3 This is a schematic diagram of an alloy resistor based on a copper-aluminum composite electrode.

[0026] Figure 4 A schematic diagram (I) showing the distribution of the first and second joints within the transition zone;

[0027] Figure 5 Schematic diagram of the distribution of the first and second joints in the transition zone (II);

[0028] Figure 6 Schematic diagram of the distribution of the first and second joints in the transition zone (III);

[0029] Figure 7 Schematic diagram of the distribution of the first and second joints in the transition zone (IV);

[0030] Figure 8 A schematic diagram (V) showing the distribution of the first and second joints within the transition zone.

[0031] Reference numerals: 10, Alloy resistor based on copper-aluminum composite electrode; 100, Resistor; 200, Electrode; 210, Copper sheet; 211, First joint; 220, Aluminum sheet; 221, Second joint; 222, Mounting hole; 230, Transition zone. Detailed Implementation

[0032] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0033] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0035] Please see Figure 1 This utility model provides an alloy resistor 10 based on a copper-aluminum composite electrode, which includes a resistor body 100 and two electrodes 200.

[0036] Please see Figure 2 and Figure 3 Two electrodes 200 are located on opposite sides of the resistor 100. Each electrode 200 includes a copper sheet 210 and an aluminum sheet 220. The copper sheet 210 is connected to the resistor 100, and the aluminum sheet 220 is used for electrical connection to an external circuit. Preferably, the aluminum sheet 220 has a mounting hole 222. The aluminum sheet 220 connects to the external circuit through the mounting hole 222. The copper sheet 210 has a first joint portion 211, and the aluminum sheet 220 has a second joint portion 221. The first joint portion 211 and the second joint portion 221 are pressed together after being joined, so that the copper sheet 210 and the aluminum sheet 220 are connected together, forming a transition region 230 between the copper sheet 210 and the aluminum sheet 220.

[0037] The electrode material in existing alloy resistors is made of copper. Because copper is soft, the electrode has weak bending resistance and is easily deformed under external force. In addition, copper is a rare metal with high material price, and the purchase price is easily affected by fluctuations in the international market, resulting in high production costs for alloy resistors.

[0038] To address the aforementioned issues, this application improves the electrode 200 material by using a composite material formed from a copper sheet 210 and an aluminum sheet 220, reducing the copper content in the electrode 200 and thus saving on the production cost of the alloy resistor. Simultaneously, in the electrode 200, the aluminum sheet 220 is used for connection to the external circuit and is located on the side away from the resistor 100, i.e., the aluminum sheet 220 is located on the outer side of the electrode 200. Furthermore, the aluminum sheet 220 is harder than the copper sheet 210, and its inclusion improves the electrode 200's resistance to deformation, making it less prone to deformation during transportation and installation. Preferably, the length of the copper sheet 210 is shorter than the length of the aluminum sheet 220; that is, in the electrode 200, only the portion connected to the resistor 100 is made of copper sheet 210, while the remaining portion is made of aluminum sheet 220. Increasing the proportion of aluminum sheet 220 further reduces the manufacturing cost of the electrode 200, making the alloy resistor lighter overall.

[0039] Furthermore, due to the significant difference in melting points between the copper sheet 210 and the aluminum sheet 220, they cannot be directly welded together. To solve this technical problem, the copper sheet 210 is provided with a first joint 211, and the aluminum sheet 220 is provided with a second joint 221. The first joint 211 and the second joint 221 are pressed together to connect the copper sheet 210 and the aluminum sheet 220. After pressing, the thickness of the transition zone 230, the thickness of the copper sheet 210, and the thickness of the aluminum sheet 220 are the same.

[0040] In the transition zone 230, the first joint 211 on the copper sheet 210 extends into the aluminum sheet 220, while the second joint 221 on the aluminum sheet 220 extends into the copper sheet 210. After pressing, the first joint 211 and the second joint 221 overlap each other. The first joint 211 and the second joint 221 can be joined in various ways, as follows: Example 1:

[0041] Please see Figure 4 The number of the first joint 211 and the second joint 221 is one. In the transition zone 230, the second joint 221 rests on the first joint 211, or the first joint 211 rests on the second joint 221. In this state, the cross-sections of the copper sheet 210 and the aluminum sheet 220 are both "L" shaped.

[0042] Example 2:

[0043] Please see Figure 5 The cross-sections of the first joint 211 and the second joint 221 are wedge-shaped. There is one first joint 211 and two second joints 221. The first joint 211 is embedded between the two second joints 221.

[0044] Example 3:

[0045] Please see Figure 6 Both the first joint 211 and the second joint 221 have wedge-shaped cross sections. Both the first joint 211 and the second joint 221 are provided in multiples. In the transition zone 230, the first joint 211 and the second joint 221 are stacked alternately.

[0046] Example 4:

[0047] Please see Figure 7 The cross-sections of the first joint 211 and the second joint 221 are rectangular. There is one first joint 211 and two second joints 221. The first joint 211 is embedded between the two second joints 221.

[0048] Example 5:

[0049] Please see Figure 8 Both the first joint 211 and the second joint 221 have rectangular cross-sections. Both the first joint 211 and the second joint 221 are provided in multiples. In the transition zone 230, the first joint 211 and the second joint 221 are stacked alternately.

[0050] The aforementioned alloy resistor 10 based on a copper-aluminum composite electrode has the following beneficial effects:

[0051] 1. Electrode 200 is composed of copper sheet 210 and aluminum sheet 220, which reduces the material cost of electrode 200;

[0052] 2. The part of electrode 200 used for connecting with the circuit is aluminum sheet 220. Aluminum sheet 220 has better bending resistance, which makes electrode 200 in alloy resistor less prone to deformation, so that the size and shape of electrode 200 can be changed according to actual use requirements.

[0053] 3. The density of aluminum is 1 / 3 that of copper. Electrode 200 is composed of two materials: copper sheet 210 and aluminum sheet 220. Compared with the existing solution (copper), electrode 200 is lighter, making the alloy resistor more portable.

[0054] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An alloy resistor based on a copper-aluminum composite electrode, characterized in that, include: The resistive element and two electrodes; The two electrodes are located on opposite sides of the resistive element; The electrode includes a copper sheet and an aluminum sheet, the aluminum sheet being away from the resistive element, the copper sheet being connected to the resistive element, and the aluminum sheet being used for electrical connection with an external circuit. The copper sheet has a first joint portion, and the aluminum sheet has a second joint portion. The first joint portion and the second joint portion are pressed together after being connected to each other, so that the copper sheet and the aluminum sheet are connected together and a transition area is formed between the copper sheet and the aluminum sheet. Both the first joint and the second joint have rectangular cross-sections, and there are multiple first joints and second joints. In the transition zone, the first joints and the second joints are stacked alternately. The length of the copper sheet is less than the length of the aluminum sheet.

2. The alloy resistor based on a copper-aluminum composite electrode according to claim 1, characterized in that, The thickness of the transition zone, the thickness of the copper sheet, and the thickness of the aluminum sheet are the same.

3. The alloy resistor based on a copper-aluminum composite electrode according to claim 1, characterized in that, The aluminum sheet has mounting holes.

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