Novel standard resistor
By adopting a new six-wire connection design and heat dissipation structure for standard resistors, the problem of uneven current field in traditional standard resistors is solved, improving the stability and lifespan of the resistors while maintaining compatibility with traditional connection methods.
Patent Information
- Application Number
- CN202423297411.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2034-12-27
AI Technical Summary
When using the traditional four-wire connection, the current field distribution of a traditional standard resistor is uneven, resulting in poor stability that cannot be effectively improved.
It adopts a new standard resistor structure, including resistor base, resistor core, plastic encapsulated shell and connection terminal structure. The four-terminal flow design with six-wire connection makes the current field distribution more uniform, and heat dissipation is achieved through copper alloy base and insulating heat-conducting plate, which enhances sealing and stability.
This achieves a more uniform current field distribution and uniform heat generation of the resistive element, improving the stability and service life of the resistor, while maintaining compatibility with the traditional four-wire connection method.
Smart Images
Figure CN223797209U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of resistance technology, and in particular to a novel standard resistor. Background Technology
[0002] A standard resistor is a resistor with high precision and stability, widely used in the measurement, calibration, and correction of electronic circuits. In traditional technology, small standard resistors employ a conventional structural design, where the two current-connected terminals and two voltage-connected terminals of the resistor core coincide. When used with the traditional four-wire connection (Kelvin connection), the current field distribution within the resistor core becomes uneven, resulting in insufficient stability and hindering its widespread adoption and improvement. Utility Model Content
[0003] This invention provides a novel standard resistor that solves the technical problem that traditional standard resistors, when using a conventional structural design and a traditional four-wire connection (Kelvin connection), suffer from uneven current field distribution in the resistor core, resulting in poor stability and hindering widespread adoption and improvement.
[0004] To solve the above-mentioned technical problems, this utility model provides a novel standard resistor, comprising:
[0005] resistor base;
[0006] The resistor core is disposed on the resistor base;
[0007] A plastic-encapsulated housing is disposed over the resistor core and connected to the resistor base; and...
[0008] The connection terminal structure includes a current connection terminal connected to each end of the resistor core and a voltage connection terminal connected to each end of the resistor core. Both current connection terminals protrude from the lateral side of the plastic encapsulation shell, and both voltage connection terminals protrude from the longitudinal side of the plastic encapsulation shell.
[0009] The resistor core includes a resistor body disposed between the resistor base and the plastic encapsulation shell, and a first resistor connection terminal and a second resistor connection terminal protruding from both ends of the resistor body. Each first resistor connection terminal surrounds the outside of a second resistor connection terminal, and there is a gap between them.
[0010] The two current connection terminals are connected to the two first resistor connection terminals in a one-to-one correspondence, and the two voltage connection terminals are connected to the two second resistor connection terminals in a one-to-one correspondence.
[0011] Optionally, the first resistor connection terminal includes a first main connection terminal connected to the current connection terminal, and first connection legs protruding on both sides of the first main connection terminal. Both first connection legs are connected to the ends of the resistor body. A connection notch is formed between the two first connection legs and the first main connection terminal, and the second resistor connection terminal protrudes into the connection notch.
[0012] Optionally, the second resistor connection terminal includes a second main connection terminal disposed in the connection notch and connected to the voltage connection terminal, and a second connection leg connected to the second main connection terminal, wherein the second connection leg is connected to the end of the resistor body.
[0013] Optionally, the resistive element is configured as a planar sheet alloy resistor.
[0014] Optionally, both the first resistor connection terminal and the second resistor connection terminal are configured as planar sheet-like connection terminals.
[0015] Optionally, the voltage connection terminal is configured as a planar L-shaped connection terminal, the horizontal end of the L-shaped connection terminal is connected to the second resistor connection terminal, and the vertical end of the L-shaped connection terminal extends vertically from the inside of the plastic encapsulation shell to its outside.
[0016] Optionally, the current connection terminal is configured as a planar plate connection terminal, one end of which is connected to the first resistor connection terminal, and the other end extends laterally from the inside of the plastic-encapsulated shell to its outside.
[0017] Optionally, the resistor base includes a copper alloy base and an insulating heat-conducting plate disposed on the copper alloy base, and the resistor core is disposed on the insulating heat-conducting plate.
[0018] Optionally, the resistor base is provided with a plurality of positioning holes around its perimeter;
[0019] The encapsulated housing includes a housing body and a plurality of positioning posts protruding from the bottom surface of the housing body. The plurality of positioning posts are embedded in the plurality of positioning holes in a corresponding manner. The resistor is sealed between the housing body and the resistor base.
[0020] Optionally, an encapsulation cavity is formed between the outer casing and the resistor base, and the resistor element is encapsulated in the encapsulation cavity;
[0021] The outer casing has a first connecting groove on each of its two lateral sides and two second connecting grooves on its top vertical side. Both the first and second connecting grooves are connected to the encapsulation cavity. The two current connecting terminals are respectively disposed in the two first connecting grooves and the two voltage connecting terminals are respectively disposed in the two second connecting grooves.
[0022] The beneficial effects of the technical solution provided by this utility model include:
[0023] By encapsulating the resistor core between the resistor base and the plastic casing, the resistor core is reliably sealed, and the structure is stable and reliable. A voltage connection terminal protruding vertically from each side of the plastic casing allows connection to a voltage detection device to detect the voltage of the resistor core. A current connection terminal protruding laterally from each end of the plastic casing allows connection to a power supply to allow current to flow through the resistor core. Furthermore, by positioning the first resistor connection terminal (connected to the current connection terminal) and the second resistor connection terminal (connected to the voltage connection terminal) at different locations on the end of the resistor body—that is, the first resistor connection terminal is spaced outside the second resistor connection terminal and connected to the end of the resistor body—compared to the conventional technology where the resistor connection terminals for the current and voltage connections are located at the same position on the end of the resistor body, the current flow in this new standard resistor changes from the two-terminal flow of a traditional four-wire (Kelvin) connection to the four-terminal flow of a six-wire connection, resulting in a more uniform current field distribution within the resistor body. At the same time, since there are still four external terminals, it can still be used with the current mainstream standard resistor four-wire connection (Kelvin connection). Attached Figure Description
[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0025] Figure 1 This is a front view schematic diagram of the novel standard resistor described in an embodiment of the present invention;
[0026] Figure 2 This is a top view of the novel standard resistor described in an embodiment of the present invention;
[0027] Figure 3 This is a side view of the novel standard resistor described in an embodiment of the present invention.
[0028] Figure 4This is an exploded structural diagram of the novel standard resistor described in an embodiment of the present invention;
[0029] Figure 5 This is a top view of the copper alloy base of the resistor holder for the novel standard resistor described in this embodiment of the present invention.
[0030] Figure 6 This is a top perspective view of the plastic encapsulation shell of the novel standard resistor described in this embodiment of the present invention;
[0031] Figure 7 This is a top view of the resistor core of the novel standard resistor described in this embodiment of the present invention.
[0032] Figure 8 This is a top view of the current connection terminal of the novel standard resistor described in this embodiment of the present invention.
[0033] Figure 9 This is a top view of the voltage connection terminal of the novel standard resistor described in this embodiment of the present invention.
[0034] In the diagram: 10. New standard resistor; 100. Resistor base; 110. Copper alloy base; 120. Insulating heat-conducting plate; 102. Positioning hole; 200. Resistor core; 202. Connection notch; 210. Resistor body; 220. First resistor connection end; 222. First main connection end; 224. First connection foot; 230. Second resistor connection end; 232. Second main connection end; 234. Second connection foot; 300. Plastic-encapsulated shell; 310. Shell body; 312. First connection groove; 314. Second connection groove; 320. Positioning post; 400. Connection terminal structure; 410. Current connection terminal; 412. Current plate connection hole; 420. Voltage connection terminal; 422. Voltage connection base plate; 424. Voltage connection side plate. Detailed Implementation
[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0036] like Figures 1 to 4As shown, this utility model proposes a novel standard resistor 10, including a resistor base 100, a resistor core 200 laid on the resistor base 100, a plastic encapsulation shell 300 covering the resistor core 200 and connected to the resistor base 100, and a connection terminal structure 400 connected to the resistor core 200 and protruding from the plastic encapsulation shell 300. By encapsulating the resistor core 200 between the resistor base 100 and the plastic encapsulation shell 300, the resistor core 200 is reliably sealed, and the structure is stable and reliable. Moreover, by encapsulating the resistor core 200 with the plastic encapsulation shell 300, the resistor core 200 inside the resistor can be effectively protected, improving the product's service life and stability.
[0037] Furthermore, the connection terminal structure 400 may include a current connection terminal 410 connected to each end of the resistor core 200, and a voltage connection terminal 420 connected to each end of the resistor core 200. Both current connection terminals 410 protrude from the lateral side of the plastic casing 300, and both voltage connection terminals 420 protrude from the longitudinal side of the plastic casing 300. The voltage connection terminals 420, protruding vertically from both sides of the plastic casing 300, can be connected to a voltage detection device to detect the voltage of the resistor core 200. The current connection terminals 410, protruding laterally from both ends of the plastic casing 300, can be connected to a power supply device to allow current to flow through the resistor core 200.
[0038] Furthermore, the resistor core 200 may include a resistor body 210 disposed between the resistor base 100 and the plastic encapsulation shell 300, and a first resistor connection terminal 220 and a second resistor connection terminal 230 protruding from both ends of the resistor body 210. Each first resistor connection terminal 220 surrounds the outside of a second resistor connection terminal 230, and there is a gap between them. Two current connection terminals 410 are connected to the two first resistor connection terminals 220 one-to-one, and two voltage connection terminals 420 are connected to the two second resistor connection terminals 230 one-to-one.
[0039] By separately positioning the first resistor connection terminal 220 (connected to the current connection terminal 410) and the second resistor connection terminal 230 (connected to the voltage connection terminal 420) at different locations on the end of the resistor body 210, i.e., by positioning the first resistor connection terminal 220 around the outside of the second resistor connection terminal 230 and connecting it to the end of the resistor body 210, compared to the conventional technology where the resistor connection terminals connected to the current connection terminal 410 and the voltage connection terminal 420 are located at the same position on the end of the resistor body 210, the current flowing through the resistor core 200 of this new standard resistor 10 changes from the two-terminal flow of the traditional four-wire connection (Kelvin connection) to the four-terminal flow of the six-wire connection, thus making the current field distribution of the resistor body 210 more uniform. At the same time, because there are still four external terminals, it can still be used with the current mainstream four-wire connection (Kelvin connection) of standard resistors.
[0040] Furthermore, such as Figures 4 to 5 As shown, the resistor holder 100 may include a copper alloy base 110 and an insulating heat-conducting plate 120 disposed on the copper alloy base 110, with the resistor core 200 disposed on the insulating heat-conducting plate 120. By providing the copper alloy base 110 and the insulating heat-conducting plate 120, heat dissipation of the resistor core 200 can be improved, allowing the heat generated by the resistor core 200 to be conducted to the outside through the resistor holder 100, ensuring the stable operation of the standard resistor. Specifically, the copper alloy base 110 can be a copper base made of copper block, which has good heat dissipation performance. In addition, the copper alloy base 110 can also be other metal bases. Moreover, the insulating heat-conducting plate 120 can be an insulating thermally conductive silicone sheet, which can both insulate and isolate the resistor core 200 from the copper alloy base 110 and effectively conduct the heat of the resistor core 200 to the copper alloy base 110.
[0041] Furthermore, the copper alloy base 110 of the resistor holder 100 may have multiple positioning holes 102 around its perimeter. That is, the copper alloy base 110 may include a flat base block, and multiple positioning holes 102 may be provided around the top surface of the base block. In addition, the shape of the insulating heat-conducting plate 120 also matches the shape of the copper alloy base 110. Moreover, the plastic-encapsulated housing 300 may include a housing body 310 that matches the base block, and multiple positioning posts 320 protruding from the bottom surface of the housing body 310. The multiple positioning posts 320 can be correspondingly embedded in the multiple positioning holes 102, and the resistor 210 and the entire resistor core 200 can be sealed between the housing body 310 and the resistor holder 100. By providing corresponding positioning holes 102 and positioning posts 320 between the resistor holder 100 and the plastic-encapsulated housing 300, the connection between the resistor holder 100 and the plastic-encapsulated housing 300 can be made tighter, resulting in a better sealing effect for the resistor core 200.
[0042] Furthermore, the copper alloy base 110 can be a rectangular block, with two positioning holes 102 on each of its two long sides, and the two positioning holes 102 on each long side of the rectangular block are located at both ends. Each positioning hole 102 can be T-shaped and extend through the side of the rectangular block to communicate with the outside. That is, each positioning hole 102 can include a main positioning groove on the rectangular block and a connecting groove between the main positioning groove and the outside. Moreover, the shape of the positioning post 320 protruding from the bottom surface of the outer shell body 310 of the plastic encapsulation shell 300 corresponds to the shape of the positioning hole 102 and can also be T-shaped. In this way, when sealing the resistor core 200 on the resistor base 100, it is easier to integrate the plastic encapsulation shell 300 and the resistor base 100, making the connection between the plastic encapsulation shell 300 and the resistor base 100 more secure and reliable, and improving the sealing effect on the resistor core 200.
[0043] Moreover, such as Figure 4 and Figure 6 As shown, a sealing cavity is formed between the outer casing 310 and the resistor base 100, and the resistor body 210 and the entire resistor core 200 can be sealed in the sealing cavity. Moreover, each of the two sides of the transverse side (which can be regarded as the left and right side direction) of the outer casing 310 is provided with a first connecting groove 312, and the top surface of the vertical side (which can be regarded as the up and down side direction) of the outer casing 310 is provided with two second connecting grooves 314. The first connecting grooves 312 and the second connecting grooves 314 are connected to the sealing cavity. Two current connecting terminals 410 are correspondingly disposed in the two first connecting grooves 312, and two voltage connecting terminals 420 are correspondingly disposed in the two second connecting grooves 314. Both voltage connection terminals 420 extend into the encapsulation cavity through the second connection groove 314 on the top surface of the housing body 310, and make contact with the end of the resistor 210 in the encapsulation cavity to conduct electricity; moreover, both current connection terminals 410 extend into the encapsulation cavity through the first connection groove 312 on the lateral side of the housing body 310, and make contact with the end of the resistor 210 in the encapsulation cavity to conduct electricity.
[0044] In addition, such as Figure 4 and Figure 7As shown, the first resistor connection terminal 220 of the resistor core 200 may include a first main connection terminal 222 connected to the current connection terminal 410, and first connection legs 224 protruding on both sides of the first main connection terminal 222. Both first connection legs 224 are connected to the end of the resistor body 210. A connection notch 202 is formed between the two first connection legs 224 and the first main connection terminal 222. The second resistor connection terminal 230 protrudes into the connection notch 202. In this way, the first resistor connection end 220 of the resistor core 200 can form a U-shaped structure. The first main connection end 222 of the first resistor connection end 220 is connected to the current connection terminal 410 for inputting or outputting current. The two first connection legs 224 of the first resistor connection end 220 are used to input current from both sides of the first main connection end 222 to the resistor body 210, or to output current from both sides of the resistor body 210 to the first main connection end 222. This allows the current to be stably input or output to the resistor body 210 from both sides, making the current more uniform when flowing through the resistor core 200, and improving the stability of the resistor structure.
[0045] Furthermore, by designing the first resistor connection terminal 220 as a U-shaped structure, a gap can be formed between the first resistor connection terminal 220 and the resistor body 210. This gap forms a connection notch 202 for accommodating the second resistor connection terminal 230, thereby separating the first resistor connection terminal 220 and the second resistor connection terminal 230. This ensures that the voltage detection of the resistor body 210 from the second resistor connection terminal 230 is not directly affected by the first resistor connection terminal 220. Moreover, the two first connection legs 224 of the first resistor connection terminal 220 can be symmetrically arranged about the lateral center line of the first main connection terminal 222, and the two first connection legs 224 can also be symmetrically arranged about the lateral center line of the resistor body 210, resulting in more uniform current input and output to the resistor body 210.
[0046] Furthermore, the width of the first main connection terminal 222 of the first resistor connection terminal 220 can be much larger than the width of each first connection pin 224, making the width of the first main connection terminal 222 wider, which facilitates connection with the current connection terminal 410, and also facilitates a more uniform distribution of current on the first main connection terminal 222. By making each first connection pin 224 narrower, it is easier to shunt the current through the two first connection pins 224, and it is also easier to form a sufficient gap between them to accommodate the second resistor connection terminal 230. For example, the width of the first main connection terminal 222 can be 5-10 times the width of the first connection pin 224.
[0047] Furthermore, the second resistor connection terminal 230 may include a second main connection terminal 232 disposed in the connection notch 202 and connected to the voltage connection terminal 420, and a second connection leg 234 connected to the second main connection terminal 232, the second connection leg 234 being connected to the end of the resistor body 210. This facilitates connecting the second resistor connection terminal 230 and the first resistor connection terminal 220 to different positions on the end of the resistor body 210.
[0048] Furthermore, the second resistor connection terminal 230 can be configured as a T-shaped structure, meaning the width of the second main connection terminal 232 of the second resistor connection terminal 230 can be greater than the width of the second connection pin 234. This facilitates the connection of the second resistor connection terminal 230 to the voltage connection terminal 420 via the second main connection terminal 232, and isolates the second connection pin 234 from the first connection pin 224, thereby reducing the impact of the current from the first resistor connection terminal 220 on the second resistor connection terminal 230.
[0049] Furthermore, the resistor element 210 can be configured as a planar sheet alloy resistor. By configuring the resistor element 210 as a planar sheet structure, the current distribution on the resistor element 210 is more uniform when it flows through it. Moreover, both the first resistor connection terminal 220 and the second resistor connection terminal 230 can also be configured as planar sheet connection terminals. That is, the first main connection terminal 222 and the two first connection legs 224 can be configured as planar sheet structures, and the second main connection terminal 232 and the second connection leg 234 can also be configured as planar sheet structures, so that the current distribution on the first resistor connection terminal 220 and the second resistor connection terminal 230 is also very uniform.
[0050] In addition, such as Figures 1 to 4 As shown, the voltage connection terminal 420 can be configured as a planar, plate-like L-shaped connection terminal. The lateral end of the L-shaped connection terminal is connected to the second resistor connection terminal 230, and the vertical end of the L-shaped connection terminal extends vertically from the inside of the plastic encapsulation shell 300 to its outside. By configuring the voltage connection terminal 420 as an L-shaped plate structure, as... Figure 9As shown, the voltage connection terminal 420 includes a voltage connection base plate 422 abutting against the second main connection terminal 232 of the horizontally arranged second resistor connection terminal 230, and a voltage connection side plate 424 bent vertically. The voltage connection side plate 424 extends vertically from the inside of the plastic encapsulation shell 300 to the outside of its top surface. By making the voltage connection terminal 420 into a planar plate shape, the contact area between the voltage connection base plate 422 of the voltage connection terminal 420 and the second main connection terminal 232 of the second resistor connection terminal 230 can be increased, making the contact between the two more stable and tighter, and the current flow will be more stable. Moreover, by making the voltage connection terminal 420 into a planar plate shape, the plastic encapsulation shell 300 can better limit the voltage connection side plate 424, and it is also more conducive to the connection of the voltage connection side plate 424 with external voltage detection equipment. In addition, in order to facilitate the connection of the voltage connection side plate 424 with external voltage detection equipment, a voltage plate connection hole can also be provided at the end of the voltage connection side plate.
[0051] Moreover, such as Figures 1 to 4 ,and Figure 8 As shown, the current connection terminal 410 can be configured as a planar plate-shaped flat connection terminal. One end of the flat connection terminal is connected to the first resistor connection terminal 220, and the other end extends laterally from the inside of the plastic-encapsulated housing 300 to its outside. Similarly, by configuring the current connection terminal 410 as a flat structure, the side of the current connection terminal 410 can be better and more tightly attached to the surface of the first main connection terminal 222 of the first resistor connection terminal 220, and the contact area between the two can be increased, thereby making the current flow more stable. Similarly, in order to facilitate the connection of the current connection terminal 410 to external power supply equipment, a current plate connection hole 412 can also be provided at the end of the current connection terminal 410.
[0052] The novel standard resistor 10 provided by this utility model allows current to flow from a flat current connection terminal 410 through a flat first resistance connection terminal 220 into a flat resistive body 210, and then out through another flat first resistance connection terminal 220 of the resistive body 210 to another flat current connection terminal 410; furthermore, by providing two flat second resistance connection terminals 230 at each end of the flat resistive body 210, and connecting the two flat second resistance connection terminals 230 to two flat voltage connection terminals 420, the voltage of the resistive body 210 can be detected.
[0053] By optimizing the structure of the resistor core 200 of the new standard resistor 10, changing the connection from four wires to six wires, the current field distribution on the resistor 210 becomes more uniform, resulting in more accurate sampling voltage and temperature. Furthermore, the more uniform current field distribution on the resistor 210 also leads to a more uniform heat distribution, allowing the heat generated by the resistor 210 to be effectively conducted to the outside through the base, ensuring the stable operation of the standard resistor. Moreover, the plastic encapsulation shell 300 effectively protects the internal resistor core 200, improving the product's lifespan and stability.
[0054] It should be noted that in this invention, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0055] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features of the present invention.
Claims
1. A new standard resistor, characterized in that, The application relates to a resistor structure, which comprises a resistor seat, a resistor core arranged on the resistor seat, a plastic sealing shell arranged on the resistor core and connected with the resistor seat, and a connecting terminal structure comprising two current connecting terminals respectively connected with two ends of the resistor core and two voltage connecting terminals respectively connected with the two ends of the resistor core, wherein the two current connecting terminals are arranged on the lateral sides of the plastic sealing shell, and the two voltage connecting terminals are arranged on the longitudinal sides of the plastic sealing shell. The resistor core comprises a resistor body arranged between the resistor seat and the plastic sealing shell, and a first resistor connecting terminal and a second resistor connecting terminal arranged on the two ends of the resistor body, wherein the first resistor connecting terminal is arranged on the outer side of the second resistor connecting terminal and has a gap between the first resistor connecting terminal and the second resistor connecting terminal. The first resistor connecting terminal comprises a first main connecting terminal connected with the current connecting terminal, and a first connecting branch arranged on the two sides of the first main connecting terminal, wherein the two first connecting branches are connected with the end of the resistor body, and a connecting gap is formed between the first main connecting terminal and the two first connecting branches, and the second resistor connecting terminal is arranged in the connecting gap. The second resistor connecting terminal comprises a second main connecting terminal arranged in the connecting gap and connected with the voltage connecting terminal, and a second connecting branch connected with the second main connecting terminal, wherein the second connecting branch is connected with the end of the resistor body. The resistor body is arranged in a planar sheet shape. The first resistor connecting terminal and the second resistor connecting terminal are arranged in a planar sheet shape. The voltage connecting terminal is arranged in a planar sheet shape and is an L-shaped connecting terminal, wherein the horizontal end of the L-shaped connecting terminal is connected with the second resistor connecting terminal, and the vertical end of the L-shaped connecting terminal is arranged on the inner side of the plastic sealing shell and vertically penetrates to the outer side of the plastic sealing shell. The current connecting terminal is arranged in a planar sheet shape and is a flat plate connecting terminal, wherein one end of the flat plate connecting terminal is connected with the first resistor connecting terminal, and the other end of the flat plate connecting terminal penetrates to the outer side of the plastic sealing shell along the horizontal direction.
2. The new standard resistor according to claim 1, characterized in that, The resistor seat comprises a copper alloy base and an insulating heat conducting plate arranged on the copper alloy base, and the resistor core is arranged on the insulating heat conducting plate.
3. The new standard resistor according to claim 2, characterized in that, The resistor seat is provided with a plurality of positioning holes on the four sides.
4. The new standard resistor according to claim 1, characterized in that, The plastic sealing shell comprises a shell main body and a plurality of positioning columns arranged on the bottom surface of the shell main body, wherein the plurality of positioning columns are embedded in the plurality of positioning holes one by one, and the resistor body is arranged between the shell main body and the resistor seat.
5. The new standard resistor according to claim 1, characterized in that, The shell main body and the resistor seat are arranged to form a packaging cavity, and the resistor body is arranged in the packaging cavity.
6. The new standard resistor according to any one of claims 1 to 5, characterized in that, 7. The new standard resistor according to any one of claims 1-5, characterized in that, 8. The new standard resistor according to any one of claims 1-5, characterized in that, 9. The new standard resistor according to any one of claims 1-5, characterized in that, 10. The new standard resistor according to claim 9, characterized in that, Two first connecting grooves are arranged on two sides of the lateral side of the shell body, and two second connecting grooves are arranged on the top surface of the vertical side of the shell body, the first connecting grooves and the second connecting grooves are communicated with the packaging cavity, and two current connecting terminals are arranged in the first connecting grooves one by one, and two voltage connecting terminals are arranged in the second connecting grooves one by one.