Fluxgate-based multi-channel current detection shunt and manufacturing method thereof

Abstract

The invention discloses a multi-channel current detection shunt based on a fluxgate and a manufacturing method of the multi-channel current detection shunt. The multi-channel current detection shunt based on the fluxgate comprises a fluxgate sensor and a shunt body. The fluxgate sensor is provided with a current detection cavity; the shunt body comprises a first connecting conductor, a resistance alloy, a second connecting conductor and a voltage detection unit; two ends of the resistance alloy are respectively connected with the first connecting conductor and the second connecting conductor; the voltage detection unit is used for detecting voltages at two ends of the resistance alloy; the middle part of the second connecting conductor is spirally twisted to form an elastic inserting part, the second connecting conductor is inserted into the inner wall of the current detection cavity in a rotatable and adjustable manner through the elastic inserting part, and the elastic inserting part elastically abuts against the inner wall of the current detection cavity. According to the shunt disclosed by the invention, the structure of a traditional current detection shunt is optimized and adjusted, so that the current detection shunt and a fluxgate sensor are better fused together to cope with various complex circuit environments.

Description

Technical Field

[0001] This invention relates to the field of current sensing shunt technology, and in particular to a multi-channel current sensing shunt based on fluxgate magnetization and its manufacturing method. Background Technology

[0002] Currently, conventional current sensing shunts on the market are all bare shunts. However, with the rapid development of the new energy field and the energy storage market, the market has more stringent requirements for the accuracy of current sampling.

[0003] To meet market demands, designers have attempted to introduce fluxgates into traditional current sensing shunts to enable multi-channel current detection, making current sensing more accurate and safer.

[0004] How to optimize and adjust the structure of traditional current sensing shunts so that they can be better integrated with fluxgate sensors to cope with various complex circuit environments is a technical problem that designers need to solve. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a multi-channel current sensing shunt based on a fluxgate magnetometer. At the same time, it discloses a manufacturing method that optimizes and adjusts the structure of the traditional current sensing shunt, thereby enabling the current sensing shunt and fluxgate magnetometer sensor to be better integrated, thus coping with various complex circuit environments.

[0006] The objective of this invention is achieved through the following technical solution: A multi-channel current detection shunt based on fluxgate magnetometer includes: a fluxgate magnetometer sensor and a shunt body; The fluxgate sensor has a current detection cavity; The shunt body includes: a first connecting conductor, a resistance alloy, a second connecting conductor, and a voltage detection unit; the two ends of the resistance alloy are respectively connected to the first connecting conductor and the second connecting conductor, and the voltage detection unit is used to detect the voltage value across the resistance alloy. The second connecting conductor has a spiral twist in the middle to form an elastic insertion part. The second connecting conductor is rotatably and adjustablely inserted into the inner wall of the current detection cavity through the elastic insertion part, and the elastic insertion part elastically abuts against the inner wall of the current detection cavity.

[0007] In one embodiment, the voltage detection unit is provided with a thermistor for detecting the resistance temperature of the resistance alloy.

[0008] In one embodiment, the first connecting conductor has a first connecting hole.

[0009] In one embodiment, the second connecting conductor has a second connecting hole.

[0010] In one embodiment, the first connecting conductor is a copper sheet.

[0011] In one embodiment, the second connecting conductor is a copper sheet.

[0012] A method for fabricating a fluxgate-based multichannel current sensing shunt, comprising the following steps: Step 1: Obtain a straight conductor, and twist the middle part of the straight conductor into a spiral to form an elastic plug-in part, thereby obtaining the second connecting conductor; Step 2: Obtain the first connecting conductor, the resistance alloy, and the voltage detection unit. Connect the two ends of the resistance alloy to the first connecting conductor and the second connecting conductor respectively. Weld the voltage detection unit between the first connecting conductor and the second connecting conductor and above the resistance alloy. Step 3: Obtain the fluxgate sensor. Insert the second connecting conductor into the inner wall of the current detection cavity of the fluxgate sensor in a rotatable and adjustable manner through the elastic plug part. The elastic plug part elastically abuts against the inner wall of the current detection cavity.

[0013] The present invention provides a multi-channel current sensing shunt based on fluxgate magnetometers, which optimizes and adjusts the structure of traditional current sensing shunts, thereby enabling the current sensing shunt and fluxgate magnetometer sensors to be better integrated, thus coping with various complex circuit environments. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention 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.

[0015] Figure 1 This is a perspective view of a multi-channel current detection shunt based on a fluxgate according to an embodiment of the present invention; Figure 2 for Figure 1 The diagram shown is a plan view of a multi-channel current sensing shunt based on fluxgate magnetometers. Figure 3 for Figure 1 The diagram shown is an exploded view of a fluxgate-based multichannel current sensing shunt. Detailed Implementation

[0016] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0017] 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.

[0018] 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 in the description of the invention 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.

[0019] like Figure 1 As shown, the present invention discloses a multi-channel current detection shunt 10 based on fluxgate magnetometer, comprising: fluxgate magnetometer sensor 100 and shunt body 200.

[0020] The fluxgate sensor 100 has a current detection cavity 110 (e.g., Figure 3 (As shown).

[0021] Please refer to the following: Figure 2 and Figure 3 The shunt body 200 includes: a first connecting conductor 210, a resistance alloy 220, a second connecting conductor 230, and a voltage detection unit 240. The two ends of the resistance alloy 220 are respectively connected to the first connecting conductor 210 and the second connecting conductor 230. The voltage detection unit 240 is used to detect the voltage value across the resistance alloy 220. Further, the voltage detection unit 240 is equipped with a thermistor (NTC) 241 for detecting the resistance temperature of the resistance alloy 220 (e.g., ...). Figure 3 (As shown).

[0022] like Figure 3 As shown, the middle part of the second connecting conductor 230 is spirally twisted to form an elastic insertion part 250. The second connecting conductor 230 is rotatably and adjustablely inserted into the inner wall of the current detection cavity 110 through the elastic insertion part 250, and the elastic insertion part 250 elastically abuts against the inner wall of the current detection cavity 110.

[0023] like Figure 3 As shown, in this embodiment, the first connecting conductor 210 has a first connecting hole 211, and the second connecting conductor 230 has a second connecting hole 231.

[0024] In this embodiment, the first connecting conductor 210 is a copper sheet, and the second connecting conductor 230 is a copper sheet.

[0025] The working principle of the fluxgate-based multichannel current detection shunt 10 described above will be explained below: Insert the fabricated shunt body 200 into the current detection cavity 110 of the fluxgate sensor, so that the elastic insertion part 250 elastically abuts against the inner wall of the current detection cavity 110, and rotate the shunt body 200 appropriately to rotate the shunt body 200 to a suitable angle. Connect the first connecting conductor 210 and the second connecting conductor 230 to supply current to the shunt body 200 so that the current can pass through the resistance alloy 220. When current passes through the resistive alloy 220, the voltage detection unit 240 will acquire the voltage data across the resistive alloy 220. Since the resistance of the resistive alloy 220 is fixed, current data can be obtained, thus realizing current sampling. When current passes through the resistance alloy 220, the temperature of the resistance alloy 220 will rise. The thermistor 241 will provide feedback on the temperature of the resistance alloy 220 when the current passes through it. This temperature can be fitted and sampled in conjunction with the temperature coefficient law of the shunt, thereby realizing current sampling. Since current is supplied to the shunt body 200, the second connecting conductor 230 will carry current, and the second connecting conductor 230 is rotatably and adjustablely inserted into the inner wall of the current detection cavity 110 through the elastic plug part 250. Thus, when the current passes through the current detection cavity 110, the fluxgate sensor 100 can detect the current value and realize current sampling. Therefore, the multi-channel current detection shunt 10 based on fluxgates of the present invention can achieve current sampling through the above-mentioned multiple pathways, thereby better adapting to the high requirements of current detection in the new energy field and energy storage market, with multiple detection channels, high detection accuracy, and high safety level.

[0026] The main technical problem solved by this invention is how to make the shunt body 200 better adapt to fluxgate sensors of different specifications and sizes, and how to make the shunt body 200 and fluxgate sensors assembled together more quickly and stably.

[0027] To solve the aforementioned technical problems, this invention specifically incorporates a spiral twist in the middle of the second connecting conductor 230 to form an elastic insertion portion 250. The second connecting conductor 230 is originally a straight strip structure. Since the second connecting conductor 230 is primarily made of materials with good ductility, such as copper, it can be twisted using a spring machine to obtain the elastic insertion portion 250. Based on the size of the matching fluxgate sensor 100, parameters such as the pitch, diameter, and number of turns of the elastic insertion portion 250 are pre-adjusted to allow the spring machine to manufacture a suitable elastic insertion portion 250.

[0028] First, the middle part of the second connecting conductor 230 is spirally twisted to obtain the elastic plug part 250. Then, the first connecting conductor 210, the resistance alloy 220, the second connecting conductor 230, and the voltage detection unit 240 are connected together to obtain the finished shunt body 200. The second connecting conductor 230 is rotatably and adjustablely inserted into the inner wall of the current detection cavity 110 via the elastic plug 250. The elastic plug 250 elastically abuts against the inner wall of the current detection cavity 110, so that the finished shunt body 200 can be quickly and stably installed on the fluxgate sensor 100. In addition, since the elastic plug 250 will adaptively shrink, the finished shunt body 200 can better adapt to fluxgate sensors of different specifications and sizes. Furthermore, the second connecting conductor 230 can rotate and adjust its angle in the current detection cavity 110 to adjust the angle of the entire shunt body 200, so that the first connecting conductor 210 and the second connecting conductor 230 can be better connected to the external circuit to adapt to complex circuits.

[0029] This invention also discloses a method for fabricating a multi-channel current detection shunt based on a fluxgate magnetometer, which is used to fabricate the aforementioned multi-channel current detection shunt based on a fluxgate magnetometer, comprising the following steps: Step 1: Obtain a straight conductor, and twist the middle part of the straight conductor into a spiral to form an elastic plug-in part, thereby obtaining the second connecting conductor; Step 2: Obtain the first connecting conductor, the resistance alloy, and the voltage detection unit. Connect the two ends of the resistance alloy to the first connecting conductor and the second connecting conductor respectively. Weld the voltage detection unit between the first connecting conductor and the second connecting conductor and above the resistance alloy. Step 3: Obtain the fluxgate sensor. Insert the second connecting conductor into the inner wall of the current detection cavity of the fluxgate sensor in a rotatable and adjustable manner through the elastic plug part. The elastic plug part elastically abuts against the inner wall of the current detection cavity.

[0030] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A multi-channel current detection shunt based on fluxgate magnetometers, characterized in that, include: Fluxgate sensor, shunt body; The fluxgate sensor has a current detection cavity; The shunt body includes: a first connecting conductor, a resistance alloy, a second connecting conductor, and a voltage detection unit; the two ends of the resistance alloy are respectively connected to the first connecting conductor and the second connecting conductor, and the voltage detection unit is used to detect the voltage value across the resistance alloy. The second connecting conductor has a spiral twist in the middle to form an elastic insertion part. The second connecting conductor is rotatably and adjustablely inserted into the inner wall of the current detection cavity through the elastic insertion part, and the elastic insertion part elastically abuts against the inner wall of the current detection cavity.

2. The multi-channel current detection shunt based on fluxgate magnetometer according to claim 1, characterized in that, The voltage detection unit is equipped with a thermistor for detecting the resistance temperature of the resistance alloy.

3. The multi-channel current detection shunt based on fluxgate magnetometer according to claim 1, characterized in that, The first connecting conductor has a first connecting hole.

4. The multi-channel current detection shunt based on fluxgate magnetometer according to claim 1, characterized in that, The second connecting conductor has a second connecting hole.

5. The multi-channel current detection shunt based on fluxgate magnetometer according to claim 1, characterized in that, The first connecting conductor is a copper sheet.

6. The multi-channel current detection shunt based on fluxgate magnetometer according to claim 1, characterized in that, The second connecting conductor is a copper sheet.

7. A method for manufacturing a multi-channel current detection shunt based on a fluxgate magnetometer, used to manufacture the multi-channel current detection shunt based on a fluxgate magnetometer as described in any one of claims 1 to 6, characterized in that, Includes the following steps: Step 1: Obtain a straight conductor, and twist the middle part of the straight conductor into a spiral to form an elastic plug-in part, thereby obtaining the second connecting conductor; Step 2: Obtain the first connecting conductor, the resistance alloy, and the voltage detection unit. Connect the two ends of the resistance alloy to the first connecting conductor and the second connecting conductor respectively. Weld the voltage detection unit between the first connecting conductor and the second connecting conductor and above the resistance alloy. Step 3: Obtain the fluxgate sensor. Insert the second connecting conductor into the inner wall of the current detection cavity of the fluxgate sensor in a rotatable and adjustable manner through the elastic plug part. The elastic plug part elastically abuts against the inner wall of the current detection cavity.

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