A wire-wound resistor assembly and automotive voltage regulator

Abstract

This application provides a wire-wound resistor assembly and an automotive transformer regulator. The wire-wound resistor assembly includes a hollow tube substrate, multiple sets of resistance alloy wires, multiple pins, and an insulating coating. The hollow tube substrate has through holes and multiple resistance regions. The multiple sets of resistance alloy wires are distributed in corresponding resistance regions, and each set of resistance alloy wires is arranged relative to its corresponding resistance region and wound along the length of the hollow tube substrate. The multiple sets of resistance alloy wires are integrated into the same hollow tube substrate. The multiple pins are connected to each set of resistance alloy wires and are located on the outer periphery of the hollow tube substrate. The multiple pins are used to connect to an external circuit board. The insulating coating is applied to the hollow tube substrate and integrally covers the multiple sets of resistance alloy wires, making the multiple sets of resistance alloy wires insulated from the external environment. This achieves the integrated application of multiple sets of resistance alloy wires, and the hollow tube substrate is compatible with multiple resistors of different resistance values, ensuring the centralized use of the wire-wound resistor assembly.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive transformer regulators, and in particular to a wound resistor assembly and an automotive transformer regulator. Background Technology

[0002] With the development of technology, automotive voltage regulators play a crucial role in automobiles. An automotive voltage regulator is a device used to step up or down voltage in automotive circuits, converting the vehicle's power supply voltage to the required voltage level. Wire-wound resistor assemblies are a component of automotive voltage regulators. In existing technology, wire-wound resistor assemblies consist of a hollow tube substrate and resistance alloy wire. The resistance alloy wire is wound around the hollow tube substrate, with leads extending from both ends. During use, these leads are directly soldered into the circuit in a series-parallel manner, making it impossible to use existing wire-wound resistor assemblies in a centralized manner. Utility Model Content

[0003] The purpose of this invention is to provide a wire-wound resistor assembly and an automotive transformer regulator. A hollow tube substrate has a through-hole arranged along the axial direction of the hollow tube substrate and penetrating it; the through-hole allows gas to pass through. The hollow tube substrate has multiple resistive regions arranged sequentially along the length of the hollow tube substrate, each region located at a different position within the substrate. Multiple sets of resistance alloy wires are distributed in corresponding resistive regions, each set arranged relative to its corresponding region and wound along the length of the hollow tube substrate. These multiple sets of resistance alloy wires are integrated into the same hollow tube substrate. Multiple pins are connected... Each set of resistance alloy wires is located on the outer periphery of the hollow tube substrate. Multiple pins are arranged side by side along the length of the hollow tube substrate and are used to connect to an external circuit board. An insulating coating is applied to the hollow tube substrate and covers the multiple sets of resistance alloy wires as a whole, so that the multiple sets of resistance alloy wires are insulated from the external environment. The insulating coating is located on the outer periphery of the multiple sets of resistance alloy wires, realizing the integrated application of multiple sets of resistance alloy wires. The hollow tube substrate is compatible with multiple resistors with different resistance values, ensuring the centralized use of the wire-wound resistor assembly. At the same time, the through holes are fully utilized for heat dissipation to dissipate heat from the multiple sets of resistance alloy wires, ensuring the heat dissipation effect of the multiple sets of resistance alloy wires.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a wire-wound resistor assembly, applied to an automotive transformer regulator, the wire-wound resistor assembly comprising:

[0005] A hollow tube base is provided with a through hole, which is arranged along the axial direction of the hollow tube base and penetrates the hollow tube base; the through hole is used for gas to pass through; the hollow tube base is provided with multiple resistive regions, which are arranged sequentially along the length direction of the hollow tube base, and the multiple resistive regions are located at different positions in the hollow tube base.

[0006] Multiple sets of resistance alloy wires are distributed in corresponding resistance regions. Each set of resistance alloy wires is arranged relative to the corresponding resistance region and wound around the hollow tube substrate along the length direction of the hollow tube substrate. Multiple sets of resistance alloy wires are integrated into the same hollow tube substrate.

[0007] Multiple pins are connected to each group of the resistance alloy wires and are located on the outer periphery of the hollow tube substrate. The multiple pins are arranged side by side along the length of the hollow tube substrate and are used to connect to an external circuit board.

[0008] An insulating coating is applied to the hollow tube substrate and integrally covers multiple sets of resistance alloy wires, so that the multiple sets of resistance alloy wires are insulated from the external environment; the insulating coating is located on the outer periphery of the multiple sets of resistance alloy wires.

[0009] Optionally, multiple sets of the resistance alloy wires are spirally arranged along the length of the hollow tube substrate and connected in parallel in sequence; multiple pins correspond to different resistance alloy wires.

[0010] Optionally, the hollow tube substrate integrates multiple sets of the resistance alloy wires, and there is a common pin between two adjacent sets of the resistance alloy wires, which separates the two adjacent sets of the resistance alloy wires.

[0011] Optionally, the lengths of the multiple pins are not consistent, and the lengths of the pins gradually decrease as the positions of the multiple sets of resistance alloy wires change.

[0012] Optionally, the pin is connected to a corresponding annular portion, which is fitted onto the hollow tube substrate and exposed on the outer periphery of the hollow tube substrate.

[0013] Optionally, the insulating coating covers the inner wall of the through hole and completely wraps the hollow tube substrate and multiple sets of the resistance alloy wires.

[0014] Optionally, the hollow tube substrate is a ceramic rod, which exchanges heat with multiple sets of resistance alloy wires. The gas in the through hole carries away the heat conducted through the hollow tube substrate; the through hole provides air-cooled heat dissipation.

[0015] Optionally, the diameter of the through hole is 3-8 mm.

[0016] Optionally, the pins are tin-plated copper wire pins; the hollow tube substrate is a thermally conductive alumina hollow ceramic rod; and the resistance alloy wire is made of a mixture of nickel-chromium alloy, PTC thermistor alloy, and iron-chromium-aluminum alloy.

[0017] To achieve the above objectives, this utility model provides the following technical solution: a vehicle transformer regulator, including the aforementioned wound resistor assembly.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] This utility model provides a wire-wound resistor assembly and an automotive transformer regulator. A hollow tube substrate has a through hole arranged along the axial direction of the hollow tube substrate and penetrating through it; the through hole allows gas to pass through. The hollow tube substrate has multiple resistive regions arranged sequentially along the length of the hollow tube substrate, each resistive region located at a different position within the hollow tube substrate. Multiple sets of resistance alloy wires are distributed in corresponding resistive regions, each set of resistance alloy wires arranged relative to its corresponding resistive region and wound along the length of the hollow tube substrate. Multiple sets of resistance alloy wires are integrated into the same hollow tube substrate; multiple pins are connected to each… Multiple sets of resistance alloy wires are arranged side-by-side along the length of the hollow tube substrate and are used to connect to an external circuit board. An insulating coating is applied to the hollow tube substrate and covers the multiple sets of resistance alloy wires as a whole, making the multiple sets of resistance alloy wires insulated from the external environment. The insulating coating is located on the outer periphery of the multiple sets of resistance alloy wires, realizing the integrated application of multiple sets of resistance alloy wires. The hollow tube substrate is compatible with multiple resistors with different resistance values, ensuring the centralized use of the wire-wound resistor assembly. At the same time, the through holes are fully utilized for heat dissipation to dissipate heat from the multiple sets of resistance alloy wires, ensuring the heat dissipation effect of the multiple sets of resistance alloy wires. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0021] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings. In the following description, the same reference numerals denote the same parts.

[0022] Figure 1 A schematic diagram of a wire-wound resistor assembly according to an embodiment of this application is shown.

[0023] Figure 2A front view of a wire-wound resistor assembly according to an embodiment of this application is shown.

[0024] Figure 3 A side view of a wire-wound resistor assembly according to an embodiment of this application is shown.

[0025] Figure Labels

[0026] 100. Wire-wound resistor assembly;

[0027] 10. Hollow tube substrate; 10a. Through hole; 10b. Resistive region;

[0028] 20. Resistance alloy wire;

[0029] 30. Pin; 31. Ring portion;

[0030] 40. Insulating coating. Detailed Implementation

[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0032] Please refer to the attached document. Figures 1-3 This application provides a wire-wound resistor assembly 100, which is applied to an automotive transformer regulator and is used for an integrated application of multiple sets of resistance alloy wires 20.

[0033] Please refer to the attached document. Figures 1-3In this embodiment, the wire-wound resistor assembly 100 includes a hollow tube substrate 10, multiple sets of resistance alloy wires 20, multiple leads 30, and an insulating coating 40. The hollow tube substrate 10 has a through hole 10a, which is arranged along the axial direction of the hollow tube substrate 10 and penetrates the hollow tube substrate 10; the through hole 10a is used for gas passage; the hollow tube substrate 10 has multiple resistance regions 10b, which are arranged sequentially along the length direction of the hollow tube substrate 10, and are located at different positions on the hollow tube substrate 10; the multiple sets of resistance alloy wires 20 are distributed in the corresponding resistance regions 10b, each set of resistance alloy wires 20 is arranged relative to the corresponding resistance region 10b, and is wound around the hollow tube substrate 10 along the length direction of the hollow tube substrate 10; the multiple sets of resistance alloy wires 20 are... The components are formed on the same hollow tube substrate 10; multiple pins 30 are connected to each group of resistance alloy wires 20 and are located on the outer periphery of the hollow tube substrate 10. The multiple pins 30 are arranged side by side along the length of the hollow tube substrate 10 and are used to connect to an external circuit board; an insulating coating 40 is coated on the hollow tube substrate 10 and integrally covers the multiple groups of resistance alloy wires 20, so that the multiple groups of resistance alloy wires 20 are insulated from the external environment; the insulating coating 40 is located on the outer periphery of the multiple groups of resistance alloy wires 20, realizing the integrated application of the multiple groups of resistance alloy wires 20, and the hollow tube substrate 10 is compatible with multiple resistors with different resistance values, ensuring the centralized use of the wire-wound resistor assembly 100. At the same time, the through holes 10a are fully utilized for heat dissipation to dissipate heat from the multiple groups of resistance alloy wires 20, ensuring the heat dissipation effect of the multiple groups of resistance alloy wires 20.

[0034] Please refer to the attached document. Figures 1-3 In this embodiment, the hollow tube substrate 10 is provided with a through hole 10a, which is arranged along the axial direction of the hollow tube substrate 10 and penetrates through the hollow tube substrate 10. The through hole 10a is used for gas to pass through, so that the gas can carry away the heat of the hollow tube substrate 10; the hollow tube substrate 10 is provided with a plurality of resistive regions 10b, which are arranged sequentially along the length direction of the hollow tube substrate 10, and the plurality of resistive regions 10b are respectively located at different positions of the hollow tube substrate 10.

[0035] Multiple sets of resistance alloy wires 20 are distributed in corresponding resistance regions 10b. Each set of resistance alloy wires 20 is arranged relative to its corresponding resistance region 10b and wound along the length of the hollow tube substrate 10. Multiple sets of resistance alloy wires 20 are integrated into the same hollow tube substrate 10, achieving integrated application of multiple sets of resistance alloy wires 20. The hollow tube substrate 10 is compatible with multiple resistors of different resistance values, ensuring the centralized use of the wire-wound resistor assembly 100. Simultaneously, the through-hole 10a is fully utilized for heat dissipation, ensuring effective heat dissipation of the multiple sets of resistance alloy wires 20.

[0036] Multiple pins 30 are connected to each group of resistance alloy wires 20 and are located on the outer periphery of the hollow tube base 10. The multiple pins 30 are arranged side by side along the length of the hollow tube base 10 and are used to connect to an external circuit board; so that each group of resistance alloy wires 20 can be connected to an external circuit board via multiple pins 30.

[0037] An insulating coating 40 is applied to the hollow tube substrate 10 and integrally covers multiple sets of resistance alloy wires 20, so that the multiple sets of resistance alloy wires 20 are insulated from the external environment; the insulating coating 40 is located on the outer periphery of the multiple sets of resistance alloy wires 20, ensuring the insulation effect of the wire-wound resistor assembly 100.

[0038] Please refer to the attached document. Figures 1-3 In this embodiment, multiple sets of resistance alloy wires 20 are spirally arranged along the length of the hollow tube substrate 10, which can maximize the resistance value per unit length. At the same time, the elasticity of the spiral can be used to alleviate thermal expansion. Multiple sets of resistance alloy wires 20 are connected in parallel in sequence. Multiple pins 30 correspond to different resistance alloy wires 20, avoiding single-point failure caused by series connection. The number of parallel branches can be selected through the pins 30 to flexibly adjust the total resistance.

[0039] Please refer to the attached document. Figures 1-3 In this embodiment, the hollow tube substrate 10 integrates multiple sets of resistance alloy wires 20. There is a common pin 30 between two adjacent sets of resistance alloy wires 20. The pin 30 separates the two adjacent sets of resistance alloy wires 20 so that the pin 30 can connect the two sets of resistance alloy wires 20 in series to form a continuous resistance band, preventing the two sets of resistance alloy wires 20 from squeezing each other and short-circuiting due to thermal expansion. Thus, the pin 30 can be both an electrical connection point and a physical thermal isolation point for the two sets of resistance alloy wires 20, and also act as a segmented tap to realize segmented power and resistance value adjustment.

[0040] Please refer to the attached document. Figures 1-3 In this embodiment, the lengths of the multiple pins 30 are inconsistent, and the length of the pins 30 gradually decreases with the position of the multiple sets of resistance alloy wires 20. Since the set of resistance alloy wires 20 closest to the power supply end usually has the highest current and generates the most heat, its corresponding pin 30 is made the longest, with the strongest heat dissipation capacity; as the current decreases step by step, the required heat dissipation area decreases, and the length of the pins 30 is shortened accordingly. The difference in the length of the pins 30 is used to compensate for the natural temperature rise along the length direction of the hollow tube substrate 10, making the surface temperature of the hollow tube substrate 10 more uniform.

[0041] Please refer to the attached document. Figures 1-3In this embodiment, the pin 30 is connected to a corresponding annular portion 31, which is sleeved on the hollow tube base 10 and exposed on the outer periphery of the hollow tube base 10. The annular portion 31 conducts electricity continuously in the circumference relative to the hollow tube base 10, allowing the resistance alloy wire 20 to be welded to the pin 30 at any angle without precise positioning, thus reducing the difficulty of the winding process.

[0042] Please refer to the attached document. Figure 1 In this embodiment, the insulating coating 40 covers the inner wall of the through hole 10a and completely wraps the hollow tube substrate 10 and multiple sets of resistance alloy wires 20, ensuring the overall insulation effect of the wire-wound resistor assembly 100.

[0043] Please refer to the attached document. Figures 1-3 In this embodiment, the hollow tube substrate 10 is a ceramic rod, which exchanges heat with multiple sets of resistance alloy wires 20. The gas in the through hole 10a carries away the heat conducted through the hollow tube substrate 10; the through hole 10a provides air-cooled heat dissipation, improving the heat dissipation effect of the hollow tube substrate 10. Optionally, the diameter of the through hole 10a is 3-8mm.

[0044] Please refer to the attached document. Figures 1-3 In this embodiment, pin 30 is a tin-plated copper wire pin 30; hollow tube substrate 10 is a thermally conductive alumina hollow ceramic rod; resistance alloy wire 20 is made of a mixture of nickel-chromium alloy, PTC thermistor alloy and iron-chromium-aluminum alloy, which ensures the thermal conduction between hollow tube substrate 10 and resistance alloy wire 20.

[0045] In a second application embodiment, an automotive voltage regulator includes a wire-wound resistor assembly 100, which is part of the automotive voltage regulator used to convert automotive power supply voltage to the required voltage level.

[0046] Compared with the prior art, the beneficial effects of this utility model are:

[0047] This utility model provides a wound resistor assembly 100 and an automotive transformer regulator. A hollow tube base 10 has a through hole 10a, which is arranged along the axial direction of the hollow tube base 10 and penetrates through it; the through hole 10a is used for gas passage; the hollow tube base 10 has multiple resistance regions 10b, which are arranged sequentially along the length of the hollow tube base 10 and located at different positions within the hollow tube base 10; multiple sets of resistance alloy wires 20 are distributed in corresponding resistance regions 10b, each set of resistance alloy wires 20 is arranged relative to its corresponding resistance region 10b and wound along the length of the hollow tube base 10; the multiple sets of resistance alloy wires 20 are integrated into the same hollow tube base 10; multiple... Each pin 30 is connected to each set of resistance alloy wires 20 and is located on the outer periphery of the hollow tube substrate 10. Multiple pins 30 are arranged side by side along the length of the hollow tube substrate 10 and are used to connect to an external circuit board. An insulating coating 40 is applied to the hollow tube substrate 10 and covers multiple sets of resistance alloy wires 20 as a whole, so that the multiple sets of resistance alloy wires 20 are insulated from the external environment. The insulating coating 40 is located on the outer periphery of the multiple sets of resistance alloy wires 20, realizing the integrated application of multiple sets of resistance alloy wires 20. The hollow tube substrate 10 is compatible with multiple resistors with different resistance values, ensuring the centralized use of the wire-wound resistor assembly 100. At the same time, the through hole 10a is fully utilized for heat dissipation to dissipate heat from the multiple sets of resistance alloy wires 20, ensuring the heat dissipation effect of the multiple sets of resistance alloy wires 20.

[0048] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0049] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0050] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A wirewound resistor assembly, characterized by The wire-wound resistor assembly, used in automotive transformer regulators, includes: A hollow tube base is provided with a through hole, which is arranged along the axial direction of the hollow tube base and penetrates the hollow tube base; the through hole is used for gas to pass through; the hollow tube base is provided with multiple resistive regions, which are arranged sequentially along the length direction of the hollow tube base, and the multiple resistive regions are located at different positions in the hollow tube base. Multiple sets of resistance alloy wires are distributed in corresponding resistance regions. Each set of resistance alloy wires is arranged relative to the corresponding resistance region and wound around the hollow tube substrate along the length direction of the hollow tube substrate. Multiple sets of resistance alloy wires are integrated into the same hollow tube substrate. Multiple pins are connected to each group of the resistance alloy wires and are located on the outer periphery of the hollow tube substrate. The multiple pins are arranged side by side along the length of the hollow tube substrate and are used to connect to an external circuit board. An insulating coating is applied to the hollow tube substrate and integrally covers multiple sets of resistance alloy wires, so that the multiple sets of resistance alloy wires are insulated from the external environment; the insulating coating is located on the outer periphery of the multiple sets of resistance alloy wires.

2. The wirewound resistor assembly of claim 1, wherein, Multiple sets of the resistance alloy wires are spirally arranged along the length of the hollow tube substrate and connected in parallel in sequence; multiple pins correspond to different resistance alloy wires.

3. The wirewound resistor assembly of claim 2, wherein, The hollow tube substrate integrates multiple sets of the resistance alloy wires, and there is a common pin between two adjacent sets of the resistance alloy wires, which separates the two adjacent sets of the resistance alloy wires.

4. The wirewound resistor assembly of claim 3, wherein, The lengths of the multiple pins are not consistent, and the lengths of the pins gradually decrease as the positions of the multiple sets of resistance alloy wires change.

5. The wire-wound resistor assembly according to claim 4, characterized in that, The pin is connected to a corresponding annular portion, which is fitted onto the hollow tube base and exposed on the outer periphery of the hollow tube base.

6. The wire-wound resistor assembly according to claim 1, characterized in that, The insulating coating covers the inner wall of the through hole and completely encapsulates the hollow tube substrate and multiple sets of the resistance alloy wires.

7. The wire-wound resistor assembly according to claim 6, characterized in that, The hollow tube substrate is a ceramic rod, which exchanges heat with multiple sets of resistance alloy wires. The gas in the through hole carries away the heat conducted through the hollow tube substrate; the through hole provides air-cooled heat dissipation.

8. The wire-wound resistor assembly according to claim 7, characterized in that, The diameter of the through hole is 3-8 mm.

9. The wire-wound resistor assembly according to claim 7, characterized in that, The pins are tin-plated copper wire pins; the hollow tube substrate is a thermally conductive alumina hollow ceramic rod; the resistance alloy wire is made of a mixture of nickel-chromium alloy, PTC thermistor alloy and iron-chromium-aluminum alloy.

10. A vehicle transformer regulator, characterized in that, Includes the wire-wound resistor assembly as described in any one of claims 1 to 9.

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