Energy-absorbing resistor module
By using a design that connects carbon-based composite resistors in series and parallel and binds them with thermally and electrically conductive adhesive, the problem of high inductance and insufficient heat dissipation in non-inductive resistors in high-frequency circuits is solved. This design achieves low inductance, high power absorption, and good heat dissipation, making it suitable for applications such as pulse power supplies, power transmission, and induction heating.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-16
- Publication Date
- 2026-04-07
AI Technical Summary
Existing non-inductive resistors have high inductance in high-frequency circuits, which makes them unable to effectively absorb power and reduce energy loss, and their insufficient heat dissipation design leads to overheating and damage.
Carbon-based composite resistors are connected in series to form a resistor string, and then connected in parallel. The carbon-based composite resistors are bonded together using thermally and electrically conductive adhesive. Combined with Y-shaped or T-shaped lead terminals made of copper and insulating thermally conductive components, the heat dissipation structure is optimized.
It achieves low resistance, low inductance, high power absorption, and good heat dissipation, meeting the needs of various application scenarios such as pulse power supply, power transmission, electric traction, and induction heating.
Smart Images
Figure CN224096506U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of resistance, especially to an energy absorption resistance module. BACKGROUND
[0002] At present, in some precision instruments and meters, electronic industrial equipment, the non-inductive resistance is often used to absorb the unwanted power generated in the working process of the equipment, and improve the stability of the equipment. The common non-inductive resistance includes metal film resistance and wire wound resistance.
[0003] However, the existing non-inductive resistance on the market still has the following disadvantages when in use: ① the inductance of the existing non-inductive resistance is large, which causes the non-inductive resistance to be unable to well absorb power and reduce energy loss in the high-frequency circuit, thereby failing to ensure the performance and reliability of the circuit. ② the continuous average power of the existing non-inductive resistance is insufficient due to the heat dissipation design, and it is easy to be damaged by overheating.
[0004] Therefore, the utility model is provided. SUMMARY
[0005] In order to overcome the above-mentioned defects, the utility model provides an energy absorption resistance module, which has the advantages of low resistance, very small inductance, large power absorption capacity, large continuous average power capacity, etc., and well meets the use requirements of various application scenarios such as pulse power supply, power transmission, power traction, and induction heating.
[0006] The utility model discloses in order to solve its technical problem adopts the technical scheme: an energy absorption resistance module, including two parallelly arranged insulating bases and two groups of resistance strings, each group of resistance strings is equipped with the insulating wear rod fixedly arranged between two insulating bases and a plurality of carbon-based composite resistors sequentially sleeved on the insulating wear rod along the length direction of the insulating wear rod, and each adjacent two carbon-based composite resistors are connected and electrically conductive through the heat-conducting and conductive adhesive.
[0007] As a further improvement of the utility model, the two groups of resistance strings are arranged side by side and have a set gap, and the plurality of carbon-based composite resistors in the two groups of resistance strings are arranged one by one in correspondence.
[0008] As a further improvement of the utility model, the lead-out terminal is provided with a first connecting part and two second connecting parts integrally connected with the first connecting part, respectively, the first connecting part is used to be electrically connected with other devices, and the two second connecting parts are sleeved on the two insulating wear rods, respectively, and are also connected and electrically conductive with the two carbon-based composite resistors through the heat-conducting and conductive adhesive.
[0009] As a further improvement of this utility model, the lead-out terminal is a Y-shaped sheet structure or a T-shaped sheet structure made of copper.
[0010] As a further improvement of this utility model, the second connecting part and the insulating rod, as well as the carbon-based composite resistor and the insulating rod, are all tightly fitted together.
[0011] As a further improvement of this utility model, insulating and thermally conductive adhesive is filled between the second connecting part and the insulating rod, and between the carbon-based composite resistor and the insulating rod.
[0012] As a further improvement of this utility model, an insulating heat-conducting element is provided between the lead-out terminal and the insulating base.
[0013] As a further improvement of this utility model, the two ends of the insulating rod pass through the two insulating bases respectively in the length direction, and are locked to the two insulating bases by locking nuts.
[0014] As a further improvement of this utility model, the thermally conductive and electrically conductive adhesive is made of high thermally conductive and electrically conductive silver paste.
[0015] As a further improvement of this utility model, the insulating base and the insulating rod are respectively made of polyethylene, polyvinyl chloride, polytetrafluoroethylene or polyimide.
[0016] The beneficial effects of this invention are as follows: Compared with the prior art, on the one hand, this invention utilizes multiple carbon-based composite resistors connected in series to form a resistor string, and then connects two sets of resistor strings in parallel to obtain an energy-absorbing resistor module with low resistance, very small inductance, and high power absorption capacity; on the other hand, this invention uses thermally and electrically conductive adhesive to bond and solidify multiple carbon-based composite resistors together. The thermally and electrically conductive adhesive has excellent electrical and thermal conductivity, ensuring the electrical continuity of the resistor string while greatly improving the continuous average power capability of the energy-absorbing resistor module; thus, the energy-absorbing resistor module of this invention can well meet the usage requirements of various application scenarios such as pulse power supply, power transmission, electric traction, and induction heating. Attached Figure Description
[0017] Figure 1 This is a three-dimensional structural diagram of the energy-absorbing resistor module described in this utility model;
[0018] Figure 2 This is a schematic diagram of the main structure of the energy-absorbing resistor module described in this utility model;
[0019] Figure 3 This is a side view of the energy-absorbing resistor module of this utility model.
[0020] Figure 4This is a top view of the energy-absorbing resistor module of this utility model.
[0021] Referring to the accompanying drawings, the following explanations are provided:
[0022] 1. Insulating base; 2. Resistor string; 20. Insulating rod; 21. Carbon-based composite resistor; 22. Thermally and electrically conductive adhesive; 3. Lead-out terminal; 31. First connecting part; 32. Second connecting part; 4. Locking nut. Detailed Implementation
[0023] The preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0024] Example:
[0025] Please see the appendix Figure 1 To be continued Figure 4 As shown, this embodiment provides an energy-absorbing resistor module, including two parallel insulating bases 1 and two sets of resistor strings 2. Each set of resistor strings 2 is provided with an insulating rod 20 fixedly disposed between the two insulating bases 1 and a plurality of carbon-based composite resistors 21 sequentially sleeved on the insulating rod 20 along the length direction of the insulating rod 20. The carbon-based composite resistors 21 are made by mixing graphite and carbon black in a certain amount, pressing them into sheets, and then sintering them at high temperature (this is a known technology, with advantages such as small size, wide and adjustable resistance range, high resistance accuracy, and very low inductance). Each pair of adjacent carbon-based composite resistors 21 are bonded and connected by thermally conductive and conductive adhesive 22 and are electrically conductive. In addition, any two carbon-based composite resistors 21 belonging to different resistor strings 2 and located on the same outermost side are connected in parallel with lead terminals 3.
[0026] As can be seen from the above, on the one hand, by connecting multiple carbon-based composite resistors 21 in series to form a resistor string 2, and then connecting two sets of resistor strings 2 in parallel, this application can obtain an energy-absorbing resistor module with low resistance, very small inductance, and high power absorption capability. On the other hand, this application uses the thermally conductive and conductive adhesive 22 to bond and fix multiple carbon-based composite resistors 21 together. The thermally conductive and conductive adhesive 22 has excellent electrical and thermal conductivity, which can ensure the electrical continuity of the resistor string 2 while greatly improving the continuous average power capability of the energy-absorbing resistor module. Thus, the energy-absorbing resistor module of this application can well meet the usage requirements of various application scenarios such as pulse power supply, power transmission, electric traction, and induction heating.
[0027] The specific structure of the energy-absorbing resistor module described in this embodiment will be described in detail below.
[0028] Please continue to refer to the appendix. Figure 1 To be continued Figure 4As shown, in this embodiment, the two sets of resistor strings 2 are arranged side by side with a set gap, which facilitates airflow between the two sets of resistor strings 2 and further improves the heat dissipation effect. Moreover, the multiple carbon-based composite resistors 21 in the two sets of resistor strings 2 are arranged in a one-to-one correspondence. Based on this, the two outermost carbon-based composite resistors 21 in the two sets of resistor strings 2 are connected in parallel with the lead-out terminal 3. It can be further understood that the two outermost carbon-based composite resistors 21 in the first set of resistor strings 2 are respectively connected in parallel with the two outermost carbon-based composite resistors 21 in the second set of resistor strings 2.
[0029] Furthermore, based on the connection method between the lead-out terminal 3 and the carbon-based composite resistor 21, the lead-out terminal 3 adopts the following implementation structure: Please refer to the appendix. Figure 1 As shown, the lead-out terminal 3 has a first connecting portion 31 and two second connecting portions 32 integrally connected to the first connecting portion 31. The first connecting portion 31 is used for electrical connection with other devices. The two second connecting portions 32 are respectively sleeved on the two insulating rods 20 and are also bonded and fixed to the two carbon-based composite resistors 21 by the thermally conductive and conductive adhesive 22, and are electrically conductive. It can be understood that, based on the thermally conductive and conductive adhesive 22, the electrical continuity and thermal conductivity / dissipation performance between the lead-out terminal 3 and the carbon-based composite resistor 21 are very good.
[0030] Furthermore, the lead-out terminal 3 can preferably adopt a Y-shaped or T-shaped sheet structure made of copper, wherein... Figure 1 The diagram illustrates a T-shaped sheet structure for the lead-out terminal 3. Furthermore, the second connecting portion 32 of the lead-out terminal 3 and the insulating rod 20, as well as the carbon-based composite resistor 21 and the insulating rod 20, are tightly fitted together to ensure the overall structural stability of the energy-absorbing resistor module. Alternatively, the space between the second connecting portion 32 of the lead-out terminal 3 and the insulating rod 20, and between the carbon-based composite resistor 21 and the insulating rod 20, can be filled with an insulating and thermally conductive adhesive (such as silicone thermally conductive adhesive or thermally conductive insulating potting compound) that combines adhesion, electrical insulation, and thermal conductivity. This ensures the overall structural stability of the energy-absorbing resistor module while further improving its electrical performance and thermal conductivity / dissipation performance.
[0031] Furthermore, in this embodiment, an insulating thermally conductive component is provided between the lead-out terminal 3 and the insulating base 1. The insulating thermally conductive component can preferably be made of insulating thermally conductive adhesive or thermally conductive silicone sheet, which can provide good adhesion, electrical insulation and thermal conductivity, further improving the overall stability and safety of the energy absorption resistor module.
[0032] Please continue to refer to the appendix. Figure 1 To be continued Figure 4 As shown, in the two sets of resistor strings 2 provided in this embodiment, the insulating base 1 and the insulating rod 20 are respectively made of polyethylene, polyvinyl chloride, polytetrafluoroethylene, or polyimide. It is understood that the above materials all have good electrical insulation and mechanical properties, which can meet the usage requirements of the insulating base 1 and the insulating rod 20. The thermally conductive and conductive adhesive 22 is a high thermally conductive and conductive silver paste, specifically MD-140SP conductive adhesive produced by LORD Corporation, or EK1000 conductive adhesive produced by Tongtai Chemical; both of these conductive adhesives are silver-filled epoxy resin conductive adhesives. Of course, in practical applications, it is not limited to the above-mentioned high thermally conductive and conductive silver paste; thermally conductive and conductive copper paste or aluminum paste, etc., can also be used.
[0033] Furthermore, in this embodiment, the insulating rod 20 is installed on the insulating base 1 in the following manner: both ends of the insulating rod 20 pass through the two insulating bases 1 respectively, and are locked to the two insulating bases 1 by a combination of a locking nut 4 and a thermally conductive pad (such as a thermally conductive silicone pad). It is understood that achieving a locked connection through the combination of the locking nut 4 and the thermally conductive pad not only ensures a stable connection but also improves heat dissipation.
[0034] In summary, the energy-absorbing resistor module of this utility model has advantages such as low resistance, very small inductance, large power absorption capacity, and large continuous average power capacity, which well meets the usage requirements of various application scenarios such as pulse power supply, power transmission, electric traction, and induction heating.
[0035] Many specific details have been set forth in the above description to provide a full understanding of this utility model. However, the above description is only a preferred embodiment of this utility model, and this utility model can be implemented in many other ways different from those described herein. Therefore, this utility model is not limited to the specific embodiments disclosed above. Furthermore, any person skilled in the art can make many possible variations and modifications to the technical solution of this utility model using the methods and techniques disclosed above, or modify it into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of this utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the content of the technical solution of this utility model, shall still fall within the protection scope of the technical solution of this utility model.
Claims
1. An energy-absorbing resistor module, characterized in that: It includes two parallel insulating bases (1) and two sets of resistor strings (2). Each set of resistor strings (2) is provided with an insulating rod (20) fixed between the two insulating bases (1) and a plurality of carbon-based composite resistors (21) sequentially sleeved on the insulating rod (20) along the length direction of the insulating rod (20). Each pair of adjacent carbon-based composite resistors (21) are bonded and connected by thermally conductive and conductive adhesive (22) and are electrically connected. In addition, any two carbon-based composite resistors (21) belonging to different resistor strings (2) and located on the same outermost side are connected in parallel with lead terminals (3).
2. The energy-absorbing resistor module according to claim 1, characterized in that: The two sets of resistor strings (2) are arranged side by side with a set gap, and the multiple carbon-based composite resistors (21) in the two sets of resistor strings (2) are arranged in a one-to-one correspondence.
3. The energy-absorbing resistor module according to claim 1, characterized in that: The lead-out terminal (3) is provided with a first connecting part (31) and two second connecting parts (32) that are integrally connected to the first connecting part (31). The first connecting part (31) is used to electrically connect with other devices. The two second connecting parts (32) are respectively sleeved on the two insulating rods (20) and are also bonded and fixed to the two carbon-based composite resistors (21) through the thermally conductive and conductive adhesive (22) and electrically connected.
4. The energy-absorbing resistor module according to claim 3, characterized in that: The lead-out terminal (3) is a Y-shaped or T-shaped sheet structure made of copper.
5. The energy-absorbing resistor module according to claim 3, characterized in that: The second connecting part (32) and the insulating rod (20) are tightly fitted together, as are the carbon-based composite resistor (21) and the insulating rod (20).
6. The energy-absorbing resistor module according to claim 3, characterized in that: The second connecting part (32) and the insulating rod (20), as well as the carbon-based composite resistor (21) and the insulating rod (20), are filled with insulating thermally conductive adhesive.
7. The energy-absorbing resistor module according to claim 2, characterized in that: An insulating heat-conducting element is provided between the lead-out terminal (3) and the insulating base (1).
8. The energy-absorbing resistor module according to claim 1, characterized in that: The insulating rod (20) passes through the two insulating bases (1) at both ends along its length and is locked to the two insulating bases (1) by locking nuts (4).
9. The energy-absorbing resistor module according to claim 1, characterized in that: The thermally conductive and electrically conductive adhesive (22) is made of high thermally conductive and electrically conductive silver paste.
10. The energy-absorbing resistor module according to claim 1, characterized in that: The insulating base (1) and the insulating rod (20) are made of polyethylene, polyvinyl chloride, polytetrafluoroethylene or polyimide materials, respectively.