Multifunctional resistor and multi-current detection device with same

Abstract

The invention discloses a multifunctional resistor and a multi-current detection device with the same. The resistor comprises a main resistor substrate and a plurality of branch resistor substrates, and all the branch resistor substrates are welded to the peripheral side of the main resistor substrate at intervals; each branch resistor substrate comprises two resistor elements and a first insulating plate embedded between the two resistor elements; on each branch resistor substrate, two resistor elements are symmetrically welded on the two sides of a first insulating plate, the first ends of the two resistor elements and the first end of the first insulating plate are welded with the main resistor substrate, and the two resistor elements are isolated from each other through the corresponding first insulating plate; the two resistor elements are electrically connected with the main resistor substrate. According to the invention, the multi-resistor function is realized through the integrated design; and the two resistor elements in each branch resistor substrate are isolated from each other through the corresponding first insulating plate, so that the temperature drift effect is effectively reduced, and the high-current multi-current detection circuit can be applied to high-current and multi-current detection.

Description

Technical Field

[0001] The invention relates to the field of resistors, and in particular to a multifunctional resistor and a multi-current detection device having the same. Background Art

[0002] In conventional technology, in order to measure different currents, it is usually necessary to set up multiple independent resistors, and each independent resistor constitutes a branch of a multi-current detection device. The above-mentioned multi-current detection device has the following defects:

[0003] 1. There are many resistors, which take up a lot of space and have a high cost;

[0004] 2. It cannot be used to detect excessive current. On the one hand, it is because each branch is too close to each other. When the voltage reaches the breakdown voltage of the gas, an arc will be formed. When excessive current passes through, the changing magnetic field may increase the risk of arc formation by inducing current or affecting the current path, thereby affecting the measurement results and posing a safety hazard. On the other hand, when excessive current flows through the main substrate, the contacts on the main substrate used to measure current will heat up rapidly, and the temperature difference will affect the measurement stability and cause inaccurate measurement results. Summary of the invention

[0005] In view of this, the present invention provides a multifunctional resistor and a multi-current detection device having the same, so as to solve the problems of large space occupation, high cost and inaccurate measurement results when multiple independent resistors are used for multi-current measurement.

[0006] The present invention provides a multifunctional resistor, comprising:

[0007] A main resistor substrate and a plurality of branch resistor substrates, wherein all the branch resistor substrates are welded at intervals on the peripheral side of the main resistor substrate;

[0008] Each of the branch resistor substrates includes two resistor elements and a first insulating plate embedded between the two resistor elements;

[0009] On each of the branch resistor substrates, the two resistor elements are symmetrically welded on both sides of the first insulating plate, the first ends of the two resistor elements and the first end of the first insulating plate are welded to the main resistor substrate, and the two resistor elements are also isolated from each other by the corresponding first insulating plate; the two resistor elements are electrically connected to the main resistor substrate.

[0010] Optionally, in each of the branch resistor substrates, the two symmetrically arranged resistor elements each include a resistor matrix, a first substrate, and a first connecting contact and a first detecting contact arranged on the first substrate;

[0011] In each of the resistor elements, the resistor matrix and the first substrate are arranged side by side on one side of the first insulating plate, and are both welded to one side of the first insulating plate; the resistor matrix is ​​arranged close to the main resistor substrate, and the first end of the resistor matrix is ​​welded to the main resistor substrate, and the first substrate is welded to the second end of the resistor matrix; the first connecting contact is arranged away from the second end of the resistor matrix, and the first detecting contact is arranged close to the intersection of the resistor matrix and the first insulating plate;

[0012] In each of the resistor elements, the resistor base material is used to provide resistance; the first connecting contact is electrically connected to an external device for introducing external current and transmitting internal current to the outside; the first detection contact is electrically connected to the main resistor substrate for measuring the voltage at the corresponding position when connected.

[0013] Optionally, in each of the resistor elements, the first end of the resistor matrix is ​​welded to the main resistor substrate by electron beam welding, the second end of the resistor matrix is ​​welded to the first substrate by electron beam welding, and the resistor matrix is ​​welded to one side of the first insulating plate by electron beam welding.

[0014] Optionally, in each of the resistor elements, the resistor base material is made of copper alloy conductive material.

[0015] Optionally, in each of the resistor elements, the resistor base material is specifically made of copper-manganese-nickel alloy.

[0016] Optionally, in each of the resistor elements, the first substrate is a copper plate.

[0017] Optionally, the main resistor substrate includes a second substrate and a second connection contact and a plurality of second detection contacts arranged on the second substrate;

[0018] The second connection contact is electrically connected to an external device and is used to introduce external current and output internal current to the outside;

[0019] The number of the second detection contacts is the same as the number of the branch resistor substrates, and all the second detection contacts are arranged in a one-to-one correspondence with all the branch resistor substrates;

[0020] The second detection contact is electrically connected to the first detection contact in the corresponding branch resistor substrate, and is used to combine with the electrically connected first detection contact when connected to detect the voltage at the position of the electrically connected first detection contact.

[0021] Optionally, in the main resistor substrate, the first side of each of the second detection contacts is arranged close to the first insulating plate in the corresponding branch resistor substrate.

[0022] Optionally, the main resistor substrate further includes a plurality of second insulating plates embedded on the second substrate;

[0023] The number of the second insulating plates is the same as the number of the second detection contacts, and all the second insulating plates are arranged in a one-to-one correspondence with all the second detection contacts;

[0024] Each of the second insulating plates is disposed close to the second side of the corresponding second detection contact;

[0025] Each of the second detection contacts is isolated from the second connection contacts, the remaining second detection contacts, and all the first detection contacts by the first insulating plate and the second insulating plate nearby.

[0026] Optionally, the second insulating plate is specifically a semicircular ceramic plate surrounding the second side of the corresponding second detection contact.

[0027] Optionally, the number of the branch resistor substrates, the number of the second detection contacts, and the number of the second insulating plates are all three.

[0028] Optionally, the second substrate is a copper plate.

[0029] Optionally, the first insulating plate is specifically a ceramic plate.

[0030] In addition, the present invention also provides a multi-current detection device, comprising the aforementioned multi-function resistor, and also comprising a voltage measurement component;

[0031] The voltage measuring component is electrically connected to the main resistance substrate and each branch resistance substrate in the multifunctional resistor, respectively, and is used to detect the voltage in the corresponding branch resistance substrate when the main resistance substrate is connected to the branch resistance substrate, and obtain the current in the corresponding branch resistance substrate according to the resistance of the resistance element in the corresponding branch resistance substrate and the detected voltage.

[0032] Beneficial effects of the present invention: the multifunctional resistor includes a plurality of branch resistor substrates, each of which is provided with two resistor elements, which are electrically connected to the main resistor substrate, so that the function of providing resistance can be realized when connected; since there are a plurality of branch resistor substrates, and all the branch resistor substrates are integrated with the main resistor substrate by welding, the traditional plurality of independent resistors can be replaced by an integrated design to realize a multifunctional multi-resistance function, which is convenient for realizing the application of multi-current detection; at the same time, the integrated design can make the whole structure more compact, save space, and effectively reduce the cost when realizing the application of multi-current detection; when the resistor element is connected to the main resistor substrate, the two resistor elements in each branch resistor substrate are isolated from each other by the corresponding first insulating plate, so on the one hand, the current flow between each branch can be effectively isolated based on the first insulating plate, and when the whole multifunctional resistor is used for multi-current detection, the temperature drift effect can be effectively reduced to ensure that it can be used for large current and multi-current detection applications; on the other hand, the influence of electromagnetic scattering and thermal stress on the whole multifunctional resistor can be effectively reduced to ensure that it can still work stably under high load conditions, and improve durability and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The features and advantages of the present invention will be more clearly understood by referring to the accompanying drawings, which are schematic and should not be construed as limiting the present invention in any way. In the accompanying drawings:

[0034] Figure 1 A top view of a multifunctional resistor in the first embodiment of the present invention is shown;

[0035] Figure 2 The main structural diagram of a multifunctional resistor in the first embodiment of the present invention is shown.

[0036] Description of reference numerals:

[0037] 1. Main resistor substrate, 2. Branch resistor substrate, 11. Second substrate, 111. Second connection contact, 112. Second detection contact, 113. Second insulating plate, 21. Resistor element, 22. First insulating plate, 211. Resistor base material, 212. First substrate, 2121. First connection contact, 2122. First detection contact. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0039] In the embodiments of the present invention, the term "and / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent three situations: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0040] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0041] In the embodiments of the present invention, the term "plurality" refers to two or more than two, and other quantifiers are similar.

[0042] Embodiment 1

[0043] A multifunctional resistor, such as Figure 1 As shown, including:

[0044] A main resistor substrate 1 and a plurality of branch resistor substrates 2, wherein all the branch resistor substrates 2 are welded at intervals on the peripheral side of the main resistor substrate 1;

[0045] Each of the branch resistor substrates 2 includes two resistor elements 21 and a first insulating plate 22 embedded between the two resistor elements 21;

[0046] On each of the branch resistor substrates 2, the two resistor elements 21 are symmetrically welded on both sides of the first insulating plate 22, the first ends of the two resistor elements 21 and the first end of the first insulating plate 22 are welded to the main resistor substrate 1, and the two resistor elements 21 are also isolated from each other by the corresponding first insulating plate 22; the two resistor elements 21 are electrically connected to the main resistor substrate 1.

[0047] In this embodiment, the multifunctional resistor includes a plurality of branch resistor substrates, each of which is provided with two resistor elements, which are electrically connected to the main resistor substrate, so that the function of providing resistance can be realized when connected; since there are a plurality of branch resistor substrates, and all the branch resistor substrates are integrated into one with the main resistor substrate by welding, the traditional plurality of independent resistors can be replaced by an integrated design to realize a multifunctional multi-resistance function, which is convenient for realizing the application of multi-current detection; at the same time, the integrated design can make the whole structure more compact, save space, and effectively reduce the cost when realizing the application of multi-current detection; when the resistor element is connected to the main resistor substrate, the two resistor elements in each branch resistor substrate are isolated from each other by the corresponding first insulating plate, so on the one hand, the current flow between each branch can be effectively isolated based on the first insulating plate, and when the whole multifunctional resistor is used for multi-current detection, the temperature drift effect can be effectively reduced to ensure that it can be used for large current and multi-current detection applications; on the other hand, it can also effectively reduce the influence of electromagnetic scattering and thermal stress on the whole multifunctional resistor, ensuring that it can still work stably under high load conditions, and improve durability and reliability.

[0048] Furthermore, in each branch resistor substrate, two resistor elements are symmetrically welded on both sides of the first insulating plate. On the one hand, the first insulating plate can be fully utilized to simultaneously achieve isolation of the two resistor elements, thereby fully ensuring that the first isolation plate can effectively isolate the current flow between each branch, thereby achieving large current application during multi-current detection, and at the same time, it can also make the layout more compact and save layout space; on the other hand, it is also convenient for the two resistor elements to be better electrically connected to the main resistor substrate, so that the two resistor elements can provide resistance when connected, thereby realizing the multi-resistance function.

[0049] The number of branch resistor substrates in this embodiment is multiple, that is, two or more. When the number of branch resistor substrates is two, the two branch resistor substrates are arranged at intervals, and can be arranged on both sides of the main resistor substrate respectively; when the number of branch resistor substrates is more than two, all branch resistor substrates are arranged at intervals, and can be arranged evenly at intervals around the main resistor substrate, or can be arranged unevenly at intervals around the main resistor substrate.

[0050] Specifically, the number of branch resistor substrates 2 in this embodiment is 3. Figure 1 As shown, two of the three branch resistor substrates 2 are respectively arranged on the left and right sides of the main resistor substrate 1 , and the remaining branch resistor substrate 2 is arranged on the upper side of the main resistor substrate 1 .

[0051] Preferably, if Figure 1 and Figure 2As shown, in each of the branch resistor substrates 2, the two symmetrically arranged resistor elements 21 each include a resistor matrix 211, a first substrate 212, and a first connecting contact 2121 and a first detecting contact 2122 arranged on the first substrate 212;

[0052] In each of the resistor elements 21, the resistor matrix 211 and the first substrate 212 are arranged side by side on one side of the first insulating plate 22, and are both welded to one side of the first insulating plate 22; the resistor matrix 211 is arranged close to the main resistor substrate 1 and the first end of the resistor matrix 211 is welded to the main resistor substrate 1, and the first substrate 212 is welded to the second end of the resistor matrix 211; the first connecting contact 2121 is arranged away from the second end of the resistor matrix 211, and the first detecting contact 2122 is arranged close to the intersection of the resistor matrix 211 and the first insulating plate 22;

[0053] In each of the resistor elements 21, the resistor matrix 211 is used to provide resistance; the first connecting contact 2121 is electrically connected to an external device for introducing external current and transmitting internal current to the outside; the first detection contact 2122 is electrically connected to the main resistor substrate 1 for measuring the voltage at the corresponding position when connected.

[0054] In the two symmetrically arranged resistor elements of each branch resistor substrate, the resistor matrix and the first substrate are arranged side by side on one side of the first insulating plate, which can further save space on the basis of ensuring that they are separated from the resistor elements on the other side; at the same time, it is also convenient to flexibly adjust the width and thickness of the resistor matrix to cope with different power load requirements, so that the entire resistor device has higher flexibility and adaptability to different application scenarios. Among them, the resistor matrix is ​​closer to the main resistor substrate than the first substrate. On the one hand, it is convenient to better access the resistor matrix to ensure that it can provide resistance more conveniently; on the other hand, it is also more convenient to connect the first connection contact on the first substrate to the external device to realize the transmission of internal and external currents. The first detection contact is arranged near the intersection of the resistor matrix and the first insulating plate. On the one hand, it can be closer to the first insulating plate, so that the first insulating plate can better play an isolation role; on the other hand, it also makes the first detection contact closer to the main resistor substrate, so that it can be more convenient to electrically connect to the main resistor substrate, and then facilitate the subsequent connection. Based on the voltage at the first detection contact and the corresponding resistance of the resistor matrix, the current at the corresponding position is detected more efficiently, reducing the current detection cost.

[0055] in, Figure 1 and Figure 2 Only the reference numerals of the components on one of the branch resistor substrates are marked, and the reference numerals of the components on the other branch resistor substrates are the same.

[0056] Preferably, in each of the resistor elements 21, the first end of the resistor matrix 211 is welded to the main resistor substrate 1 by electron beam welding, the second end of the resistor matrix 211 is welded to the first connecting contact 2121 by electron beam welding, and the resistor matrix 211 is welded to one side of the first insulating plate 22 by electron beam welding.

[0057] The electron beam welding method is used to weld the end sides of the resistor matrix in each resistor element to the corresponding device, which can simplify the manufacturing process of the resistor device, reduce processing complexity and cost, and improve productivity.

[0058] Preferably, in each of the resistor elements 21 , the resistor matrix 211 is made of a copper alloy conductive material.

[0059] Furthermore, in each of the resistor elements 21 , the resistor matrix 211 is specifically made of a copper-manganese-nickel alloy.

[0060] The resistor matrix is ​​made of copper alloy conductive material. Furthermore, the low-impedance CuMnNi alloy (i.e. copper-manganese-nickel alloy) is used to effectively improve the conductivity of the material while maintaining low energy consumption, which can improve the overall performance without increasing material costs.

[0061] Preferably, the first insulating plate 22 is a ceramic plate.

[0062] The ceramic plate has good insulation properties, which can better isolate the two resistor elements, ensuring that no current flows between the two resistor elements in each branch, ensuring the use of multiple resistors and large currents, etc. The ceramic plate also has good high-temperature stability, corrosion resistance and chemical stability, and can maintain stable insulation properties in high-temperature environments, and maintain stable insulation properties in acidic and alkaline media, thereby extending the service life of the resistor device; in addition, the ceramic plate also has high mechanical strength and hardness, can withstand certain mechanical pressure, and protect the resistor device from physical damage.

[0063] In other embodiments, the first insulating plate may also be a plastic plate, a silicone plate, or a mixed material plate made of at least two of ceramic, plastic, and silicone.

[0064] Preferably, the first substrate 212 is a copper plate.

[0065] Using copper plate as the first substrate can provide better electrical conductivity, thermal conductivity, mechanical properties and corrosion resistance, ensuring that each branch resistor substrate can fully exert its function.

[0066] Preferably, if Figure 1 and Figure 2As shown, the main resistor substrate 1 includes a second substrate 11 and a second connection contact 111 and a plurality of second detection contacts 112 arranged on the second substrate 11;

[0067] The second connection contact 111 is electrically connected to an external device and is used to introduce external current and output internal current to the outside;

[0068] The number of the second detection contacts 112 is the same as the number of the branch resistor substrates 2, and all the second detection contacts 112 are arranged in a one-to-one correspondence with all the branch resistor substrates 2;

[0069] The second detection contact 112 is electrically connected to the first detection contact 2122 in the corresponding branch resistor substrate 2, and is used to combine with the electrically connected first detection contact 2122 when connected to detect the voltage at the position of the electrically connected first detection contact 2122.

[0070] The main resistor substrate is provided with a second connection contact with the same function as the first connection contact, so that the entire main resistor substrate can be electrically connected to an external device through the second connection contact to realize the connection of the main resistor substrate, and then it is convenient to introduce external current and transmit current to the outside, so that the entire resistor device can realize the resistance function and be applied to large current and multiple current detection; the main resistor substrate is provided with the same number and one-to-one corresponding second detection contacts as the branch resistor substrate, so that the first detection contact is conveniently connected with the corresponding second detection contact, and then the resistor matrix corresponding to the first detection contact on the corresponding branch resistor substrate is connected to the circuit to realize voltage sampling of the corresponding resistor matrix, and then current sampling is realized based on the sampled voltage and the resistance of the corresponding resistor matrix; since there are multiple branch resistor substrates in this embodiment, and each branch resistor substrate has two resistor matrixes, only one integrated multi-functional resistor can be used, without using multiple independent resistors, to realize the detection of multiple currents in the absence of current flowing between them.

[0071] It should be understood that each branch resistor substrate corresponds to a second detection contact, and the second detection contact serves as a common contact when two resistor elements on the branch resistor substrate are connected respectively. Based on this design, the design can be further simplified and the cost can be reduced.

[0072] Preferably, if Figure 1 and Figure 2 As shown, in the main resistor substrate 1 , the first side of each second detection contact 112 is arranged close to the first insulating plate 22 in the corresponding branch resistor substrate 2 .

[0073] The first sides of the second detection contacts are close to the first insulating plate. On the one hand, this can ensure that the second detection contacts can serve as the common contacts of the two resistance elements in the corresponding branch resistance substrate to achieve multi-current detection. On the other hand, the first insulating plate can be used to isolate the first side of the second detection contact from the remaining components to ensure that no current flows between the two resistance elements in each branch, thereby ensuring the realization of multi-resistance applications, large current applications, etc.

[0074] Preferably, if Figure 1 and Figure 2 As shown, the main resistor substrate 1 further includes a plurality of second insulating plates 113 embedded in the second substrate 11;

[0075] The number of the second insulating plates 113 is the same as the number of the second detection contacts 112, and all the second insulating plates 113 are arranged in a one-to-one correspondence with all the second detection contacts 112;

[0076] Each of the second insulating plates 113 is disposed close to the second side of the corresponding second detection contact 112;

[0077] Each of the second detection contacts 112 is isolated from the second connection contact 111 , the remaining second detection contacts 112 , and all the first detection contacts 2122 by the first insulating plate 22 and the second insulating plate 113 nearby.

[0078] By means of the second isolation plate arranged one by one on the second side of each second detection contact, the second detection contact can be isolated from the second connection contact, the remaining second detection contacts and all the first detection contacts. Combined with the isolation effect of the first insulating plate on the first side of the second detection contact, current will not flow between the entire second detection contact and the remaining components, thereby reducing the heat generated by the contact, reducing the temperature drift effect, and improving the detection accuracy; the influence of electromagnetic scattering and thermal stress is minimized, ensuring stable operation under high load conditions, and improving durability and reliability.

[0079] Preferably, the second insulating plate 113 is specifically a semicircular ceramic plate surrounding the second side of the corresponding second detection contact 112 .

[0080] Similar to the first insulating plate, the second insulating plate made of ceramic material can better isolate the second detection contact from the second connection contact, the remaining second detection contacts and all the first detection contacts, thereby achieving better isolation and ensuring the use of multiple resistors and large currents. It can ensure that the second insulating plate has good high-temperature stability, corrosion resistance and chemical stability, can maintain stable insulation performance in high-temperature environments, and can maintain stable insulation performance in acidic and alkaline media, thereby extending the service life of the resistor device. It also has high mechanical strength and hardness, can withstand certain mechanical pressure, and protect the resistor device from physical damage. In addition, the semicircular design can more fully shield the second side of the second detection contact, so that the second side is completely isolated from the second connection contact, the remaining second detection contacts and all the first detection contacts, further improving the isolation effect.

[0081] Similar to the first insulating plate, the second insulating plate may also be a plastic plate, a silicone plate, or a mixed material plate made of at least two of ceramic, plastic, and silicone.

[0082] Preferably, the number of the branch resistor substrates 2 , the number of the second detection contacts 112 , and the number of the second insulating plates 113 are all three.

[0083] Through the above-mentioned quantity design, the entire multifunctional resistor can be formed into a star connection form, and there are four conductors in the star connection. Through the star connection and four-conductor technology, the electrical contact between the resistance elements can be more optimized, and the measurement distortion caused by the internal voltage of the connection elements can be reduced, thereby significantly improving the measurement accuracy and reliability.

[0084] Preferably, the second substrate 11 is a copper plate.

[0085] Similar to the first substrate, using copper plate as the second substrate can provide better electrical conductivity, thermal conductivity, mechanical properties and corrosion resistance, ensuring that the main resistor substrate can fully exert its functions.

[0086] Embodiment 2

[0087] A multi-current detection device comprises the multi-function resistor in the first embodiment and also comprises a voltage measurement component;

[0088] The voltage measuring component is electrically connected to the main resistance substrate and each branch resistance substrate in the multifunctional resistor, respectively, and is used to detect the voltage in the corresponding branch resistance substrate when the main resistance substrate is connected to the branch resistance substrate, and obtain the current in the corresponding branch resistance substrate according to the resistance of the resistance element in the corresponding branch resistance substrate and the detected voltage.

[0089] In this embodiment, the voltage measuring component is used to detect voltage, and is electrically connected to the main resistor substrate and each branch resistor substrate respectively. When the main resistor substrate is connected to one of the branch resistor substrates, the voltage between the connected branch resistor substrate and the main resistor substrate can be detected. At this time, the resistance of the resistor element in the connected branch resistor substrate is known. By combining the detected voltage and the known resistance, the current between the corresponding connected branch resistor substrate and the main resistor substrate can be realized; since there are multiple branch resistor substrates, each branch resistor substrate can be electrically connected to the main resistor substrate respectively, and the resistance of the resistor element in each branch resistor substrate can be set to be different. Then, by using the voltage measuring element to be electrically connected to the main resistor substrate and each branch resistor substrate respectively, a variety of different current detections can be realized, thereby achieving the purpose of multi-current detection.

[0090] Specifically, the voltage measurement component can be a voltage sensor that can detect the voltage signal between the connected branch resistor substrate and the main resistor substrate; it can also be based on the voltage sensor, adding modules such as signal conditioning circuit, analog-to-digital converter, controller and power supply, using the power supply to provide working voltage for the controller, voltage sensor, signal conditioning circuit, and analog-to-digital converter, using the controller to send control instructions to control the operation of the voltage sensor, signal conditioning circuit, and analog-to-digital converter, using the signal conditioning circuit to process the voltage signal detected by the voltage sensor (such as amplification, filtering, etc.), and using the analog-to-digital converter to convert the processed voltage signal to facilitate digital processing and transmission of the voltage signal.

[0091] The above-mentioned voltage sensor, signal conditioning circuit, analog-to-digital converter, controller, power supply and other modules can all adopt conventional designs, and the specific details are not repeated here.

[0092] The multi-function resistor in the multi-current detection device described in this embodiment has the same structure as the multi-function resistor described in Example 1. Therefore, for details not provided in this embodiment, please refer to Example 1 and Example 2. Figure 1 to Figure 2 The detailed description will not be repeated here.

[0093] for Figure 1 The multi-function resistor shown in the figure realizes the process of multi-current detection as follows:

[0094] Connect one end of the voltage measuring component to the second detection contact on the far left of the main resistor substrate, and connect the other end of the voltage measuring component to the first detection contact in the upper resistor element of the left branch resistor substrate (referred to as the left branch resistor substrate), the voltage corresponding to the upper resistor element can be detected, and combined with its corresponding resistance, the corresponding current can be obtained using the current calculation formula (i.e., I=U / R). Connect one end of the voltage measuring component to the second detection contact on the far left of the main resistor substrate, and connect the other end of the voltage measuring component to the first detection contact in the lower resistor element of the left branch resistor substrate, the voltage corresponding to the lower resistor element can be detected, and combined with its corresponding resistance, the corresponding current can be obtained using the current calculation formula (i.e., I=U / R). The same is true for the right branch resistor substrate (referred to as the right branch resistor substrate), which will not be repeated here. By connecting one end of the voltage measuring component to the second detection contact on the upper side of the main resistor substrate, and connecting the other end of the voltage measuring component to the first detection contact in the left resistor element of the upper branch resistor substrate (referred to as the upper branch resistor substrate), the voltage corresponding to the left resistor element can be detected, and the corresponding current can be obtained by using the current calculation formula (i.e., I=U / R) in combination with its corresponding resistance. By connecting one end of the voltage measuring component to the second detection contact on the upper side of the main resistor substrate, and connecting the other end of the voltage measuring component to the first detection contact in the right resistor element of the upper branch resistor substrate, the voltage corresponding to the right resistor element can be detected, and the corresponding current can be obtained by using the current calculation formula (i.e., I=U / R) in combination with its corresponding resistance.

[0095] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A multifunctional resistor, characterized in that: include: A main resistor substrate and a plurality of branch resistor substrates, wherein all the branch resistor substrates are welded at intervals on the peripheral side of the main resistor substrate; Each of the branch resistor substrates includes two resistor elements and a first insulating plate embedded between the two resistor elements; On each of the branch resistor substrates, the two resistor elements are symmetrically welded on both sides of the first insulating plate, the first ends of the two resistor elements and the first end of the first insulating plate are welded to the main resistor substrate, and the two resistor elements are also isolated from each other by the corresponding first insulating plate; the two resistor elements are electrically connected to the main resistor substrate.

2. The multifunctional resistor according to claim 1, characterized in that: In each of the branch resistor substrates, the two symmetrically arranged resistor elements each include a resistor matrix, a first substrate, and a first connecting contact and a first detecting contact arranged on the first substrate; In each of the resistor elements, the resistor base material and the first substrate are arranged side by side on one side of the first insulating plate, and are both welded to one side of the first insulating plate; The resistor matrix is ​​arranged close to the main resistor substrate, and the first end of the resistor matrix is ​​welded to the main resistor substrate, and the first substrate is welded to the second end of the resistor matrix; The first connection contact is arranged away from the second end of the resistor base material, and the first detection contact is arranged close to the intersection of the resistor base material and the first insulating plate; In each of the resistor elements, the resistor matrix is ​​used to provide resistance; the first connection contact is electrically connected to an external device to introduce external current and output internal current to the outside; The first detection contact is electrically connected to the main resistance substrate and is used to measure the voltage at the corresponding position when connected.

3. The multifunctional resistor according to claim 2, characterized in that: In each of the resistor elements, the first end of the resistor base material is welded to the main resistor substrate by electron beam welding, the second end of the resistor base material is welded to the first substrate by electron beam welding, and the resistor base material is welded to one side of the first insulating plate by electron beam welding.

4. The multifunctional resistor according to claim 2, characterized in that: In each of the resistor elements, the resistor base material is made of a copper alloy conductive material.

5. The multifunctional resistor according to claim 4, characterized in that: In each of the resistor elements, the resistor base material is specifically made of copper-manganese-nickel alloy.

6. The multifunctional resistor according to claim 2, characterized in that: In each of the resistor elements, the first substrate is a copper plate.

7. The multifunctional resistor according to claim 2, characterized in that: The main resistor substrate comprises a second substrate and a second connection contact and a plurality of second detection contacts arranged on the second substrate; The second connection contact is electrically connected to an external device and is used to introduce external current and output internal current to the outside; The number of the second detection contacts is the same as the number of the branch resistor substrates, and all the second detection contacts are arranged in a one-to-one correspondence with all the branch resistor substrates; The second detection contact is electrically connected to the first detection contact in the corresponding branch resistor substrate, and is used to combine with the electrically connected first detection contact when connected to detect the voltage at the position of the electrically connected first detection contact.

8. The multifunctional resistor according to claim 7, characterized in that: In the main resistor substrate, the first side of each of the second detection contacts is arranged close to the first insulating plate in the corresponding branch resistor substrate.

9. The multifunctional resistor according to claim 8, characterized in that: The main resistor substrate further comprises a plurality of second insulating plates embedded in the second substrate; The number of the second insulating plates is the same as the number of the second detection contacts, and all the second insulating plates are arranged in a one-to-one correspondence with all the second detection contacts; Each of the second insulating plates is disposed close to the second side of the corresponding second detection contact; Each of the second detection contacts is isolated from the second connection contacts, the remaining second detection contacts, and all the first detection contacts by the first insulating plate and the second insulating plate nearby.

10. The multifunctional resistor according to claim 9, characterized in that: The second insulating plate is specifically a semicircular ceramic plate surrounding the second side of the corresponding second detection contact.

11. The multifunctional resistor according to claim 9, characterized in that: The number of the branch resistor substrates, the number of the second detection contacts, and the number of the second insulating plates are all three.

12. The multifunctional resistor according to claim 7, characterized in that: The second substrate is a copper plate.

13. The multifunctional resistor according to any one of claims 1 to 12, characterized in that: The first insulating plate is specifically a ceramic plate.

14. A multi-current detection device, characterized in that: A multifunctional resistor according to any one of claims 1 to 13, further comprising a voltage measuring component; The voltage measuring component is electrically connected to the main resistance substrate and each branch resistance substrate in the multifunctional resistor, respectively, and is used to detect the voltage in the corresponding branch resistance substrate when the main resistance substrate is connected to the branch resistance substrate, and obtain the current in the corresponding branch resistance substrate according to the resistance of the resistance element in the corresponding branch resistance substrate and the detected voltage.

Images