Precise sampling alloy resistor

Abstract

The utility model is applicable to the technical field of resistor production, and provides a precision sampling alloy resistor, which comprises a carrier and four pins, two pins are respectively arranged on two sides of the carrier, a gap is formed between the two pins on the same side, and the four-pin structure enables the alloy resistor to have more stable support, can better bear the load of current, and is more stable in performance. The stability and the reliability of the system are improved; one of the two pins on the same side is used for connecting a current lead, the other pin is used for connecting a voltage sampling lead, meanwhile, a four-wire detection circuit is adopted, two current leads are used for transmitting current, and the other two voltage sampling leads are used for measuring voltage, so that the influence of lead resistance on current measurement can be eliminated, and the sampling precision is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of resistor production, and particularly relates to a precision sampling alloy resistor. Background Art

[0002] With the continuous development of battery technology, battery formation and grading, battery internal resistance detection equipment, and other high-precision current sampling systems play a crucial role in the battery field. However, the existing structural alloy resistors lack a stable support structure, which may pose a risk of not being able to withstand the load of the current, being unstable and having low reliability.

[0003] Therefore, there are defects in the prior art. Content of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies of instability and low reliability in the above-mentioned prior art, and provide a precision sampling alloy resistor.

[0005] The utility model is realized as follows: a precision sampling alloy resistor includes a carrier and four pins. Two pins are respectively arranged on both sides of the carrier. There is a gap formed between the two pins on the same side, and one of the two pins on the same side is used to connect the current wire, and the other pin is used to connect the voltage sampling wire.

[0006] Further, the two pins on each side of the carrier are respectively a large pin and a small pin, and the width of the large pin is greater than the width of the small pin.

[0007] Further, the large pin is used to connect the current wire, and the small pin is used to connect the voltage sampling wire.

[0008] Further, each pin includes a transition part and a connection part. One end of the transition part is connected to the carrier, and the other end is connected to the connection part. The transition part is used to lift the carrier, and the connection part is used to connect with the device to be sampled.

[0009] Further, the connection part extends away from the carrier from the other end of the transition part, and the connection part is located below the carrier.

[0010] Further, the transition part is vertically arranged and perpendicularly connected to the carrier.

[0011] Further, the connection part is horizontally arranged and perpendicularly connected to the transition part.

[0012] Further, the carrier is made of high-precision Kanthal alloy and copper material.

[0013] A precision sampling alloy resistor provided by the present utility model has two pins respectively arranged on both sides of the carrier, and the number of pins is four. The four-pin structure enables the alloy resistor to have a more stable support, can better withstand the load of current, and improves the stability and reliability of the system. At the same time, a four-wire detection circuit is adopted. Two current wires are used to transmit current, and the other two voltage sampling wires are used to measure voltage, which can eliminate the influence of wire resistance on current measurement to improve the sampling accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0015] The following drawings are only intended to illustrate and explain the present utility model schematically and do not limit the scope of the present utility model.

[0016] Figure 1 It is a schematic structural diagram of a precision sampling alloy resistor provided by the present utility model.

[0017] Figure 2 It is a schematic diagram of the positions of the four pins in the present utility model.

[0018] Explanation of the reference numerals in the drawings: 1. Carrier; 2. Large pin; 3. Small pin; 4. Transition part; 5. Connection part. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the following further details the present utility model in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0020] Please refer to Figure 1 - Figure 2 , a precision sampling alloy resistor disclosed in the utility model, includes a carrier 1 and four pins. Among them, the carrier 1 is made of high-precision Kanthal alloy and copper material, has high conductivity, low temperature coefficient and good mechanical properties to improve the performance of the entire carrier 1. The electron beam welding process is also adopted. In the case of overheating of the entire alloy resistor caused by high power and long-term operation, the test accuracy can still be guaranteed, and the influence on its performance and life is significantly reduced.

[0021] On both sides of Carrier 1, there are two pins respectively, and there is a gap between the two pins on the same side to prevent the two pins from being in close contact. The four pins make the entire alloy resistor have a four-pin structure, which can support Carrier 1 more stably, enabling Carrier 1 to better withstand the current load. Specifically, each pin includes a transition part 4 and a connection part 5. One end of the transition part 4 is connected to Carrier 1, and the other end is connected to the connection part 5. The transition part 4 is used to lift Carrier 1. When heat is generated during the operation of Carrier 1, the dissipated heat can be well dissipated through the elevated space of the transition part 4, increasing the space for air convection and greatly improving the heat dissipation effect to ensure performance.

[0022] The connection part 5 is used to connect with the device to be sampled. Preferably, the connection part 5 extends from the other end of the transition part 4 in a direction away from Carrier 1, and the connection part 5 is located below Carrier 1. Without affecting the lifting effect of the transition part 4 on Carrier 1, the surface of the connection part 5 is completely exposed, enabling a clearer understanding of the position of the connection part 5 with the device to be sampled, facilitating the connection between the entire alloy resistor and the device to be sampled, accelerating the connection speed, and improving the processing efficiency.

[0023] Furthermore, the transition part 4 is vertically arranged and perpendicularly connected to Carrier 1, and the connection part 5 is horizontally arranged and perpendicularly connected to the transition part 4. That is, the entire pin is designed with a right-angle bend. While further strengthening the stable support structure, it can also effectively reduce the production material of the pin to reduce the production cost.

[0024] One of the two pins on the same side is used to connect the current wire, and the other pin is used to connect the voltage sampling wire. Specifically, the two pins on each side of Carrier 1 are a large pin 2 and a small pin 3 respectively. The width of the large pin 2 is greater than that of the small pin 3. The large pin 2 is used to connect the current wire, and due to the larger width of the large pin 2, it can also be connected to a large-current wire, being able to well withstand the current load and improving the stability and reliability of the entire alloy resistor. The small pin 3 is connected to the voltage sampling wire. That is, Carrier 1 simultaneously adopts a four-wire detection circuit, using two current wires to transmit current to achieve current shunting, and the other two voltage sampling wires are used to measure voltage, which can eliminate the influence of wire resistance on current measurement and ensure the accuracy and reliability of processes such as battery formation and capacitance measurement and battery internal resistance detection.

[0025] The above are only two preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A precision sampling alloy resistor, characterized by: It comprises a carrier (1) and four pins, wherein two pins are respectively provided on both sides of the carrier (1), a gap is formed between the two pins on the same side, and one of the two pins on the same side is used to connect a current wire, and the other pin is used to connect a voltage sampling wire.

2. The precision sampling alloy resistor according to claim 1, characterized in that: The two pins on each side of the carrier (1) are respectively a large pin (2) and a small pin (3), and the width of the large pin (2) is greater than the width of the small pin (3).

3. The precision sampling alloy resistor according to claim 2, characterized in that: The large pin (2) is connected to the current conducting wire, and the small pin (3) is connected to the voltage sampling conducting wire.

4. The precision sampling alloy resistor according to claim 1, characterized in that: Each of the pins comprises a transition portion (4) and a connection portion (5); one end of the transition portion (4) is connected to the carrier (1), and the other end is connected to the connection portion (5); the transition portion (4) is used to raise the carrier (1), and the connection portion (5) is used to connect to a device to be sampled.

5. The precision sampling alloy resistor according to claim 4, characterized in that: The connecting portion (5) extends from the other end of the transition portion (4) in a direction away from the carrier (1), and the connecting portion (5) is located below the carrier (1).

6. The precision sampling alloy resistor according to claim 5, characterized in that: The transition portion (4) is arranged vertically and vertically connected to the carrier (1).

7. The precision sampling alloy resistor according to claim 5, characterized in that: The connecting portion (5) is arranged horizontally and vertically connected to the transition portion (4).

8. The precision sampling alloy resistor according to claim 1, characterized in that: The carrier (1) is made of high-precision Kama alloy and copper materials.

Images