Multifunctional resistor and multi-current detection device having the same

Abstract

The application discloses a multifunctional resistor and a multi-current detection device with the same. The resistor comprises a trunk resistor substrate and a plurality of branch resistor substrates, all of which are welded at intervals on the circumferential side of the trunk resistor substrate; each branch resistor substrate comprises two resistor elements and a first insulating plate embedded between the two resistor elements; on each branch resistor substrate, the two resistor elements are symmetrically welded on the two sides of the first insulating plate, the first ends of the two resistor elements and the first end of the first insulating plate are all welded with the trunk resistor substrate, and the two resistor elements are isolated from each other through the corresponding first insulating plate; and the two resistor elements are electrically connected with the trunk resistor substrate. The application realizes the multifunctional multi-resistor function through integrated design; the two resistor elements in each branch resistor substrate are isolated from each other through the corresponding first insulating plate, thereby effectively reducing the temperature drift effect and being capable of being used for large-current and multi-current detection applications.

Description

Technical Field

[0001] This invention relates to the field of resistors, and more specifically to a multifunctional resistor and a multicurrent detection device having the same. Background Technology

[0002] In traditional techniques, multiple independent resistors are typically required to measure different currents, with each independent resistor constituting a branch of the multi-current detection device. The above-described type of multi-current detection device has the following drawbacks:

[0003] 1. The number of resistors is large, which takes up a lot of space and results in high cost;

[0004] 2. It cannot be used to detect excessive current. On the one hand, each branch is too close together. When the voltage reaches the breakdown voltage of the gas, an electric 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, thus affecting the measurement results and posing a safety hazard. On the other hand, when excessive current flows through the main board, the contacts on the main board used to measure the current will heat up rapidly. The temperature difference will affect the measurement stability and also lead to inaccurate measurement results. Summary of the Invention

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

[0006] This invention provides a multifunctional resistor, comprising:

[0007] A main resistor substrate and multiple branch resistor substrates, wherein all of the branch resistor substrates are spaced apart and welded to the periphery 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, two resistor elements are symmetrically welded to 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 both welded to the main resistor substrate. The two resistor elements are also isolated from each other by the corresponding first insulating plates. Both 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 base material, a first substrate, and a first connecting contact and a first detection contact disposed on the first substrate;

[0011] 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 base material is located close to the main resistor substrate and the first end of the resistor base material is welded to the main resistor substrate, and the first substrate is welded to the second end of the resistor base material; the first connection contact point is located away from the second end of the resistor base material, and the first detection contact point is located close to the junction of the resistor base material and the first insulating plate;

[0012] In each of the resistive elements, the resistive matrix 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 the circuit is turned on.

[0013] Optionally, in each of the resistive elements, the first end of the resistive base material is welded to the main resistive substrate using an electron beam welding method, the second end of the resistive base material is welded to the first substrate using an electron beam welding method, and the resistive base material is welded to one side of the first insulating plate using an electron beam welding method.

[0014] Optionally, in each of the resistive elements, the resistive matrix is ​​made of a copper alloy conductive material.

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

[0016] Optionally, in each of the resistive 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 disposed on the second substrate;

[0018] The second connection contact is electrically connected to an external device for introducing external current and transmitting 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 configured 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 detect the voltage at the location of the electrically connected first detection contact when the circuit is turned on.

[0021] Optionally, in the main resistor substrate, the first side of each second detection contact is disposed 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 set in a one-to-one correspondence with all the second detection contacts;

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

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

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

[0027] Optionally, the number of the branch resistor substrate, the number of the second detection contacts, and the number of the second insulating plate 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, including the aforementioned multi-functional resistor, and further including a voltage measurement component;

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

[0032] The beneficial effects of this invention are as follows: The multifunctional resistor includes multiple branch resistor substrates, each of which has two resistive elements. These resistive elements are electrically connected to the main resistor substrate, thus providing resistance when the resistor is switched on. Because there are multiple branch resistor substrates, and all branch resistor substrates are integrated with the main resistor substrate by welding, an integrated design can replace the traditional multiple independent resistors, achieving multifunctional multi-resistance capabilities and facilitating multi-current detection applications. Simultaneously, the integrated design makes the entire structure more compact, saving space and effectively reducing costs when implementing multi-current detection applications. When the resistive elements are switched on to the main resistor substrate, the two resistive elements in each branch resistor substrate are isolated from each other by a corresponding first insulating plate. Therefore, on the one hand, the first insulating plate effectively isolates the current flow between each branch, effectively reducing temperature drift when the multifunctional resistor is used for multi-current detection, ensuring its suitability for high-current, multi-current detection applications. On the other hand, it effectively reduces the impact of electromagnetic scattering and thermal stress on the entire multifunctional resistor, ensuring stable operation under high load conditions and improving durability and reliability. Attached Figure Description

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

[0034] Figure 1 This figure shows a top view of a multifunctional resistor according to Embodiment 1 of the present invention;

[0035] Figure 2 The diagram shows a front view of a multifunctional resistor according to Embodiment 1 of the present invention.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. Main resistor substrate; 2. Branch resistor substrate; 11. Second substrate; 111. Second connecting 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 connecting contact; 2122. First detection contact. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] In this embodiment of the invention, the term "and / or" describes the relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. The character " / " generally indicates that the preceding and following associated objects have an "or" relationship.

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

[0041] In this embodiment of the invention, the term "multiple" refers to two or more, and other quantifiers are similar.

[0042] Example 1

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

[0044] A main resistor substrate 1 and a plurality of branch resistor substrates 2, wherein all of the branch resistor substrates 2 are spaced apart and welded to the periphery 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, two resistor elements 21 are symmetrically welded to 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 both welded to the main resistor substrate 1. The two resistor elements 21 are also isolated from each other by the corresponding first insulating plate 22. Both resistor elements 21 are electrically connected to the main resistor substrate 1.

[0047] In this embodiment, the multifunctional resistor includes multiple branch resistor substrates, each with two resistive elements. These resistive elements are electrically connected to the main resistor substrate, thus providing resistance when switched on. Because there are multiple branch resistor substrates, and all branch resistor substrates are integrated with the main resistor substrate by welding, an integrated design can replace the traditional multiple independent resistors, achieving multifunctional multi-resistance capabilities and facilitating multi-current detection applications. Simultaneously, the integrated design makes the entire structure more compact, saving space and effectively reducing costs when implementing multi-current detection applications. When the resistive elements are connected to the main resistor substrate, the two resistive elements in each branch resistor substrate are isolated from each other by a corresponding first insulating plate. Therefore, on the one hand, the first insulating plate effectively isolates the current flow between each branch, effectively reducing temperature drift when the multifunctional resistor is used for multi-current detection, ensuring its suitability for high-current, multi-current detection applications. On the other hand, it effectively reduces the impact of electromagnetic scattering and thermal stress on the entire multifunctional resistor, ensuring stable operation under high load conditions and improving durability and reliability.

[0048] Furthermore, in each branch resistor substrate, two resistor elements are symmetrically welded to both sides of the first insulating plate. On the one hand, the first insulating plate can be fully utilized to simultaneously isolate the two resistor elements, thereby ensuring that the first insulating plate can effectively isolate the current flow between each branch, realizing high-current applications in multi-current detection, and also making the layout more compact and saving layout space. On the other hand, it also facilitates better electrical connection between the two resistor elements and the main resistor substrate, so that both resistor elements can provide resistance when connected, realizing multi-resistance function.

[0049] In this embodiment, the number of branch resistor substrates is multiple, that is, two or more. When there are two branch resistor substrates, the two branch resistor substrates are arranged alternately, and can be respectively arranged on both sides of the main resistor substrate; when there are more than two branch resistor substrates, all branch resistor substrates are arranged alternately, which can be evenly spaced around the main resistor substrate or non-uniformly spaced around the main resistor substrate.

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

[0051] Preferably, such as 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 base material 211, a first substrate 212, and a first connecting contact 2121 and a first detection contact 2122 disposed on the first substrate 212.

[0052] In each of the resistor elements 21, the resistor base material 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 base material 211 is located close to the main resistor substrate 1 and its first end is welded to the main resistor substrate 1, and the first substrate 212 is welded to the second end of the resistor base material 211; the first connecting contact point 2121 is located away from the second end of the resistor base material 211, and the first detection contact point 2122 is located close to the junction of the resistor base material 211 and the first insulating plate 22;

[0053] In each of the resistor elements 21, the resistor base material 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 the circuit is turned on.

[0054] In each branch resistor substrate, two symmetrically arranged resistor elements are positioned side-by-side on one side of the first insulating plate. This arrangement saves space while ensuring separation from the resistor elements on the other side. It also allows for flexible adjustment of the width and thickness of the resistor substrate to meet different power load requirements, resulting in greater flexibility and adaptability for various applications. The resistor substrate is closer to the main resistor substrate than the first substrate. This facilitates better connection to the resistor substrate, ensuring it provides resistance more easily. It also makes it easier to connect the first contact point on the first substrate to external devices, enabling the transmission of internal and external current. The first detection contact is positioned near the junction of the resistor substrate and the first insulating plate. This allows the first insulating plate to better perform its isolation function and also brings the first detection contact closer to the main resistor substrate, facilitating electrical connection. This allows for more efficient detection of the current at the corresponding location based on the voltage at the first detection contact and the resistance of the corresponding resistor substrate during subsequent connection, reducing current detection costs.

[0055] in, Figure 1 and Figure 2 Only the components on one branch resistor substrate are labeled; the components on the other branch resistor substrates are labeled in the same way.

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

[0057] Electron beam welding is used to weld each end of the resistive base material in each resistive element to the corresponding device, which can simplify the manufacturing process of resistive devices, reduce processing complexity and cost, and improve productivity.

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

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

[0060] Using copper alloy conductive materials to make resistor base materials, and further using low-impedance CuMnNi alloy (i.e., copper manganese nickel alloy), can effectively improve the conductivity of the material while maintaining low energy consumption, and can improve the overall performance without increasing material costs.

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

[0062] Ceramic plates possess excellent insulation properties, effectively isolating two resistive elements and ensuring no current flow occurs between them in each branch, thus facilitating applications with multiple resistors and high currents. Furthermore, ceramic plates exhibit good high-temperature stability, corrosion resistance, and chemical stability, maintaining stable insulation performance even at high temperatures and in acidic and alkaline media, thereby extending the lifespan of resistive devices. In addition, ceramic plates possess high mechanical strength and hardness, allowing them to withstand certain mechanical pressures and protecting resistive devices 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 a copper plate as the first substrate provides better electrical conductivity, thermal conductivity, mechanical properties, and corrosion resistance, ensuring that each branch resistor substrate can fully perform its function.

[0066] Preferably, such as 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 disposed on the second substrate 11.

[0067] The second contact point 111 is electrically connected to an external device for introducing external current and transmitting 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 detect the voltage at the location of the electrically connected first detection contact 2122 when the circuit is turned on.

[0070] The main resistor substrate has a second contact point with the same function as the first contact point, facilitating electrical connection between the main resistor substrate and external devices. This enables the main resistor substrate to be switched on, allowing for the introduction and transmission of external current. This allows the entire resistor device to perform its resistive function and be used for high-current and multi-current detection. The main resistor substrate also has the same number of corresponding second detection contacts as the branch resistor substrates, facilitating the connection of the first detection contacts to the corresponding second detection contacts. This allows the resistor base material corresponding to the first detection contact on the corresponding branch resistor substrate to be connected to the circuit, enabling voltage sampling of the corresponding resistor base material. Based on the sampled voltage and the resistance of the corresponding resistor base material, current sampling is achieved. Since there are multiple branch resistor substrates in this embodiment, and each branch resistor substrate has two resistor base materials, a single integrated multi-functional resistor can be used instead of multiple independent resistors, allowing for the detection of multiple currents even when there is no current flowing between them.

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

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

[0073] The first side of the second detection contact is close to the first insulating plate. On the one hand, this ensures that the second detection contact can serve as a common contact for two resistive elements in the corresponding branch resistor substrate, enabling multi-current detection. On the other hand, the first insulating plate can isolate the first side of the second detection contact from the other components, ensuring that no current flows between the two resistive elements in each branch, thereby ensuring the application of multiple resistors and high current.

[0074] Preferably, such as Figure 1 and Figure 2 As shown, the main resistor substrate 1 also 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 nearby first insulating plate 22 and second insulating plate 113.

[0078] By using the second insulating plates that are correspondingly installed on the second side of each second detection contact, the second detection contact can be isolated from the second connecting contact, the other 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, the entire second detection contact will not have current flowing between it and other components, reducing the heat generated by the contact, reducing the temperature drift effect, and improving detection accuracy. The effects of electromagnetic scattering and thermal stress are minimized, ensuring stable operation under high load conditions and improving durability and reliability.

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

[0080] Similar to the first insulating plate, the ceramic second insulating plate better isolates the second detection contact from the second connecting contact, the other second detection contacts, and all first detection contacts, achieving superior isolation and ensuring smooth operation in multi-resistor and high-current applications. It also ensures good high-temperature stability, corrosion resistance, and chemical stability, maintaining stable insulation performance in high-temperature environments and acidic and alkaline media, thus extending the lifespan of the resistive device. Furthermore, it possesses high mechanical strength and hardness, withstanding certain mechanical pressure and protecting the resistive device from physical damage. In addition, the semi-circular design more effectively blocks the second side of the second detection contact, completely isolating it from the second connecting contact, the other second detection contacts, and all first detection contacts, further enhancing the isolation effect.

[0081] Similarly to the first insulating board, the second insulating board can also be a plastic board, a silicone board, or a board made of a mixture of materials made of at least two of ceramic, plastic, and silicone.

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

[0083] By using the above-mentioned number design, the entire multifunctional resistor can be formed in a star connection with four conductors. Through the star connection and four-conductor technology, the electrical contact between the resistive elements can be optimized, reducing measurement distortion caused by the internal voltage of the connecting elements, thereby significantly improving the accuracy and reliability of the measurement.

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

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

[0086] Example 2

[0087] A multi-current detection device includes the multi-functional resistor in Embodiment 1, and also includes a voltage measurement component;

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

[0089] In this embodiment, the voltage measurement component is used to detect voltage. It 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 resistive 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 resistive element in each branch resistor substrate can be set to be different. By using the voltage measurement component to be electrically connected to the main resistor substrate and each branch resistor substrate respectively, multiple different current detections can be realized, achieving the purpose of multi-current detection.

[0090] Specifically, the voltage measurement component can be a voltage sensor capable of detecting the voltage signal between the connected branch resistor substrate and the main resistor substrate; alternatively, it can be based on a voltage sensor with added modules such as signal conditioning circuit, analog-to-digital converter, controller, and power supply. The power supply provides operating voltage to the controller, voltage sensor, signal conditioning circuit, and analog-to-digital converter. The controller sends control commands to control the operation of the voltage sensor, signal conditioning circuit, and analog-to-digital converter. The signal conditioning circuit processes the voltage signal detected by the voltage sensor (e.g., amplification, filtering), and the analog-to-digital converter converts the processed voltage signal for digital processing and transmission.

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

[0092] The multifunctional resistor in the multicurrent detection device described in this embodiment has the same structure as the multifunctional resistor described in Embodiment 1. Therefore, for details not covered in this embodiment, please refer to Embodiment 1 and... Figures 1 to 2 The specific details will not be elaborated here.

[0093] for Figure 1 The multifunctional resistor shown demonstrates the following process for achieving multiple current detection:

[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 of the upper resistor element on the left branch resistor substrate (referred to as the left branch resistor substrate). The voltage corresponding to the upper resistor element can be detected. Combined with its corresponding resistance, the current can be calculated using the current calculation formula (I=U / R). Similarly, 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 of the lower resistor element on the left branch resistor substrate. The voltage corresponding to the lower resistor element can be detected. Combined with its corresponding resistance, the current can be calculated using the current calculation formula (I=U / R). The same logic applies to the right branch resistor substrate (referred to as the right branch resistor substrate), and will not be elaborated further here. Connect one end of the voltage measuring component to the second detection contact on the upper side of the main resistor substrate, and connect the other end of the voltage measuring component to the first detection contact of the left-hand resistor element on the upper branch resistor substrate (referred to as the upper branch resistor substrate). The voltage corresponding to the left-hand resistor element can be detected. Combined with its corresponding resistance, the corresponding current can be obtained using the current calculation formula (i.e., I=U / R). Similarly, connect one end of the voltage measuring component to the second detection contact on the upper side of the main resistor substrate, and connect the other end of the voltage measuring component to the first detection contact of the right-hand resistor element on the upper branch resistor substrate. The voltage corresponding to the right-hand resistor element can be detected. Combined with its corresponding resistance, the corresponding current can be obtained using the current calculation formula (i.e., I=U / R).

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

Claims

1. A multifunctional resistor, characterized in that, include: A main resistor substrate and multiple branch resistor substrates, wherein all of the branch resistor substrates are spaced apart and welded to the periphery 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, two resistor elements are symmetrically welded to 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 both welded to the main resistor substrate. The two resistor elements are also isolated from each other by the corresponding first insulating plates. Both resistor elements are electrically connected to the main resistor substrate. In each of the branch resistor substrates, the two symmetrically arranged resistor elements each include a resistor base material, a first substrate, and a first connecting contact and a first detection contact disposed 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 base material is located close to the main resistor substrate and the first end of the resistor base material is welded to the main resistor substrate, and the first substrate is welded to the second end of the resistor base material; the first connection contact point is located away from the second end of the resistor base material, and the first detection contact point is located close to the junction of the resistor base material and the first insulating plate; In each of the resistive elements, the resistive matrix 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 the circuit is turned on. The main resistor substrate includes a second substrate and a second connection contact and a plurality of second detection contacts disposed on the second substrate. The second connection contact is electrically connected to an external device for introducing external current and transmitting 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 configured 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 detect the voltage at the location of the electrically connected first detection contact when the circuit is turned on.

2. The multifunctional resistor according to claim 1, characterized in that, In each of the resistor elements, the first end of the resistor base material is welded to the main resistor substrate using an electron beam welding method, the second end of the resistor base material is welded to the first substrate using an electron beam welding method, and the resistor base material is welded to one side of the first insulating plate using an electron beam welding method.

3. The multifunctional resistor according to claim 1, characterized in that, In each of the resistor elements, the resistor matrix is ​​made of a copper alloy conductive material.

4. The multifunctional resistor according to claim 3, characterized in that, In each of the resistive elements, the resistive base material is specifically made of a copper-manganese-nickel alloy.

5. The multifunctional resistor according to claim 1, characterized in that, In each of the resistive elements, the first substrate is a copper plate.

6. The multifunctional resistor according to claim 1, characterized in that, In the main resistor substrate, the first side of each second detection contact is disposed close to the first insulating plate in the corresponding branch resistor substrate.

7. The multifunctional resistor according to claim 6, characterized in that, The main resistor substrate also includes 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 set in a one-to-one correspondence with all the second detection contacts; Each of the second insulating plates is disposed on the second side near the corresponding second detection contact; Each of the second detection contacts is isolated from the second connection contact, the remaining second detection contacts, and all the first detection contacts by the nearby first and second insulating plates.

8. The multifunctional resistor according to claim 7, characterized in that, The second insulating plate is specifically a semi-circular ceramic plate surrounding the second side of the corresponding second detection contact.

9. The multifunctional resistor according to claim 7, characterized in that, The number of the branch resistor substrate, the number of the second detection contacts, and the number of the second insulating plate are all three.

10. The multifunctional resistor according to claim 1, characterized in that, The second substrate is a copper plate.

11. The multifunctional resistor according to any one of claims 1 to 10, characterized in that, The first insulating plate is specifically a ceramic plate.

12. A multi-current detection device, characterized in that, The device includes a multifunctional resistor as described in any one of claims 1 to 11, and further includes a voltage measurement component; The voltage measurement component is electrically connected to the main resistor substrate and each branch resistor substrate in the multifunctional resistor, respectively, and is used to detect the voltage in the corresponding branch resistor substrate when the main resistor substrate and the branch resistor substrate are connected, and to obtain the current in the corresponding branch resistor substrate based on the resistance of the resistor element in the corresponding branch resistor substrate and the detected voltage.

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