Test joint of internal resistance tester

Abstract

The utility model belongs to the technical field of battery internal resistance testers, and discloses a test connector of an internal resistance tester, which comprises a male seat and a female seat connected with the male seat in a matched manner. The male seat comprises a male seat shell and a conductive core arranged in the male seat shell, the end part of the conductive core is provided with a first connecting part extending out of the male seat shell, and the first connecting part is electrically connected with the conductive core; the female seat comprises a female seat shell and a second connecting part or a third connecting part arranged in the female seat shell, the second connecting part is electrically connected with the first connecting part and the first probe part, and the third connecting part is electrically connected with the first connecting part and the second probe part. According to the utility model, through the arrangement of the male seat and the female seat cooperatively connected with the male seat, different types of probe parts can be connected, and the probe can be quickly disassembled and assembled so as to be suitable for various test situations.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery internal resistance testers, and relates to a test connector of an internal resistance tester. Background Art

[0002] An electromagnetic internal resistance tester is an instrument used to measure the internal impedance of a battery and the degree of damage to the acidification film of the battery. It is an instrument that applies a 1KHZ alternating current signal to the battery under test and obtains its internal resistance by measuring the alternating voltage drop. The battery internal resistance tester is different from the principle of measuring resistance with a multimeter. The value it measures is in milliohms, while the value measured by the multimeter is in ohms. Moreover, the multimeter can only measure the resistance value of an object without power supply, while the internal resistance tester can measure the resistance value of both an object without power supply and an object with power supply. Therefore, the two cannot be equated. The deterioration state of the battery is judged by the size of the internal resistance value. Generally speaking, the smaller the resistance value, the better the performance of the battery. Therefore, the method of detecting the battery by measuring the internal resistance is a good method with high speed and reliability.

[0003] The test leads of the battery internal resistance tester have various types, including clamp types (alligator clips, flat mouth clips, etc.) and probe types. For different test scenarios, corresponding test leads need to be purchased, which will result in relatively high price costs, especially for imported test leads.

[0004] Based on this, there is an urgent need in this field for a test connector of an internal resistance tester to solve the above technical problems. Content of the Utility Model

[0005] In view of this, the purpose of the utility model is to solve the above problems and provide a test connector of an internal resistance tester.

[0006] To solve the above technical problems, the utility model provides a test connector of an internal resistance tester, which includes a male seat and a female seat cooperatively connected with the male seat;

[0007] The male seat includes a male seat housing and a conductive core arranged in the male seat housing. A first connection part extending out of the male seat housing is arranged at the end of the conductive core, and the first connection part is electrically connected to the conductive core;

[0008] The female seat includes a female seat housing and a second connection part or a third connection part arranged in the female seat housing. The second connection part is electrically connected to the first connection part and a first probe head, and the third connection part is electrically connected to the first connection part and a second probe head.

[0009] As a further improvement of the utility model, the first connection part includes a first connection terminal and a second connection terminal, and the first connection terminal and the second connection terminal are electrically connected to the conductive core.

[0010] As a further improvement of the present utility model, the second connecting portion includes a first accommodating cavity and a second accommodating cavity. The first accommodating cavity is used for accommodating the first connecting terminal, and the second accommodating cavity is used for accommodating the second connecting terminal.

[0011] As a further improvement of the present utility model, the first probe head includes a first probe and a second probe. The first probe is electrically connected to the first connecting terminal, and the second probe is electrically connected to the second connecting terminal.

[0012] As a further improvement of the present utility model, the second connecting portion further includes a first elastic member and a second elastic member;

[0013] The first elastic member is accommodated in the first accommodating cavity. One end of the first elastic member is electrically connected to the first connecting terminal, and the other end of the first elastic member is electrically connected to the first probe;

[0014] The second elastic member is accommodated in the second accommodating cavity. One end of the second elastic member is electrically connected to the second connecting terminal, and the other end of the second elastic member is electrically connected to the second probe.

[0015] As a further improvement of the present utility model, contact portions are provided at the ends of the first probe and the second probe. The diameter of the contact portion is greater than the diameters of the first probe and the second probe, and the contact portion is circular or conical.

[0016] As a further improvement of the present utility model, the third connecting portion includes a third accommodating cavity and a fourth accommodating cavity. The third accommodating cavity is used for accommodating the first connecting terminal, and the fourth accommodating cavity is used for accommodating the second connecting terminal.

[0017] As a further improvement of the present utility model, the second probe head includes a first clamping portion and a second clamping portion. The first clamping portion is electrically connected to the first connecting terminal through a first wire, and the second clamping portion is electrically connected to the second connecting terminal through a second wire. The first clamping portion and the second clamping portion are alligator clips or flat clips.

[0018] As a further improvement of the present utility model, the male housing includes a first housing, a second housing, a third housing, and a fourth housing connected in sequence. The diameters of the first housing and the second housing are equal, and the diameter of the third housing is smaller than that of the second housing and larger than that of the fourth housing.

[0019] As a further improvement of the present utility model, a buffer member is provided between the first housing and the second housing.

[0020] The technical effect of the present utility model is as follows: Compared with the prior art, a test connector of an internal resistance tester provided by the present utility model realizes the conduction between the first connection part and the first probe head by arranging a male seat and a female seat that is cooperatively connected with the male seat, and the first connection seat is cooperatively connected with the second connection part. The first connection part is electrically connected to the battery internal resistance tester through a conductive core, so as to realize measurement through the first probe head; the first connection seat is cooperatively connected with the third connection part to realize the conduction between the first connection part and the second probe head. The first connection part is electrically connected to the battery internal resistance tester through a conductive core, so as to realize measurement through the second probe head. By connecting different female seats through the first connection part of the male seat, that is, the male seat is connected to the first probe head through the second connection part for measurement or the male seat is connected to the second probe head through the third connection part for measurement, different types of probe heads can be connected, and they can be quickly disassembled and assembled to be applicable to various test scenarios. Compared with purchasing corresponding test wires for different test scenarios in the prior art, the price is lower and the applicability is wider. Brief Description of the Drawings

[0021] 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 drawings in the following description are only a part of the embodiments of the present utility model, rather than all the embodiments. For those of ordinary skill in the art, without creative efforts, other drawings obtained based on these drawings all belong to the scope protected by the present utility model.

[0022] Figure 1 is a plan view of a test connector of an internal resistance tester provided by an embodiment of the present utility model;

[0023] Figure 2 is an internal structure diagram of a second connection part and a first probe head provided by an embodiment of the present utility model;

[0024] Figure 3 is an internal structure diagram of a third connection part and a second probe head provided by an embodiment of the present utility model.

[0025] Among them, 10 is the male socket, 11 is the male socket housing, 111 is the first housing, 112 is the second housing, 113 is the third housing, 114 is the fourth housing, 115 is the buffer member, 12 is the conductive core, 13 is the first connection part, 131 is the first connection terminal, 132 is the second connection terminal, 20 is the female socket, 21 is the second connection part, 211 is the first accommodation cavity, 212 is the second accommodation cavity, 213 is the first elastic member, 214 is the second elastic member, 22 is the third connection part, 221 is the third accommodation cavity, 222 is the fourth accommodation cavity, 23 is the first probe head, 231 is the first probe, 232 is the second probe, 233 is the contact part, 24 is the second probe head, 241 is the first clamping part, 242 is the second clamping part, 243 is the first wire, 244 is the second wire. Detailed implementation manners

[0026] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific 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.

[0027] In order to make the description of the present disclosure more detailed and complete, the following presents an illustrative description of the implementation manners and specific embodiments of the present utility model; however, this is not the only form for implementing or applying the specific embodiments of the present utility model. The implementation manners cover the features of multiple specific embodiments and the method steps and their sequences for constructing and operating these specific embodiments. However, other specific embodiments can also be used to achieve the same or equivalent functions and step sequences. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0029] It should be understood that the terms "first", "second", etc. in the description and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects and do not necessarily need to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present utility model described here can be implemented in an order other than those illustrated or described here.

[0030] In the description of the present utility model, the orientation or positional relationship indicated by terms such as "front", "rear", "top", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0031] Please refer to Figures 1 - 3 , an embodiment of the present utility model provides a test connector for an internal resistance tester to solve the problem of high cost of purchasing different test leads for different usage scenarios.

[0032] Specifically, please refer to Figure 1 which is a plan view of a test connector for an internal resistance tester provided by an embodiment of the present utility model. The present utility model provides a test connector for an internal resistance tester, including a male seat 10 and a female seat 20 cooperatively connected with the male seat 10; by providing the male seat 10 and the female seat 20 cooperatively connected with the male seat 10, different types of female seats 20 can be connected, and multiple test scenarios can be applicable while enabling quick disassembly and assembly.

[0033] Furthermore, the male seat 10 includes a male seat housing 11 and a conductive core 12 disposed inside the male seat housing 11. A first connection portion 13 extending out of the male seat housing 11 is provided at the end of the conductive core 12, and the first connection portion 13 is electrically connected to the conductive core 12; the female seat 20 includes a female seat 20 housing and a second connection portion 21 or a third connection portion 22 disposed inside the female seat 20 housing. The second connection portion 21 is electrically connected to the first connection portion 13 and a first probe head 23, and the third connection portion 22 is electrically connected to the first connection portion 13 and a second probe head 24. During use, the first connection seat is cooperatively connected with the second connection portion 21 to achieve conduction between the first connection portion 13 and the first probe head 23. The first connection portion 13 is electrically connected to the battery internal resistance tester through the conductive core 12, and thus measurement is achieved through the first probe head 23; the first connection seat is cooperatively connected with the third connection portion 22 to achieve conduction between the first connection portion 13 and the second probe head 24. The first connection portion 13 is electrically connected to the battery internal resistance tester through the conductive core 12, and thus measurement is achieved through the second probe head 24. By connecting different female seats 20 through the first connection portion 13 of the male seat 10, that is, the male seat 10 measures through the second connection portion 21 connecting the first probe head 23 or the male seat 10 measures through the third connection portion 22 connecting the second probe head 24, different types of probe heads can be connected to be applicable to multiple test scenarios. Compared with the prior art of purchasing corresponding test leads for different test scenarios, the price is lower and the applicability is wider.

[0034] As a further improvement of the present utility model, the first connection part 13 includes a first connection terminal 131 and a second connection terminal 132, and the first connection terminal 131 and the second connection terminal 132 are electrically connected to the conductive core 12. By providing that the first connection part 13 includes the first connection terminal 131 and the second connection terminal 132, and the first connection terminal 131 and the second connection terminal 132 are electrically connected to the conductive core 12, it is realized that there are two connection ends respectively for the positive or negative connection terminals of the battery internal resistance tester connected to the conductive core 12. That is, the male seat 10 is connected to the positive pole of the battery internal resistance tester, and the positive pole of the battery internal resistance tester is connected to the first connection terminal 131 and the second connection terminal 132; the male seat 10 is connected to the negative pole of the battery internal resistance tester, and the negative pole of the battery internal resistance tester is connected to the first connection terminal 131 and the second connection terminal 132. In this way, the battery internal resistance tester can use the AC four-terminal test method to measure the battery internal resistance, improving the measurement accuracy.

[0035] As a further improvement of the present utility model, please refer to Figures 2 - 3 , the second connection part 21 includes a first accommodation cavity 211 and a second accommodation cavity 212. The first accommodation cavity 211 is used for accommodating the first connection terminal 131, and the second accommodation cavity 212 is used for accommodating the second connection terminal 132. By providing the first accommodation cavity 211 and the second accommodation cavity 212, the first connection terminal 131 is accommodated in the first accommodation cavity 211, and the second connection terminal 132 is accommodated in the second accommodation cavity 212, avoiding the unstable connection and falling off when the male seat 10 and the female seat 20 are cooperatively connected, which affects the measurement effect, and improving the connection stability of the test joint.

[0036] As a further improvement of the present utility model, the first probe head 23 includes a first probe 231 and a second probe 232. The first probe 231 is electrically connected to the first connection terminal 131, and the second probe 232 is electrically connected to the second connection terminal. By providing that the first probe head 23 includes the first probe 231 and the second probe 232, the first probe 231 is electrically connected to the first connection terminal 131, and the second probe 232 is electrically connected to the second connection terminal. By connecting the first probe 231 and the second probe 232 to the first connection terminal 131 and the second connection terminal 132 respectively, in this way, the battery internal resistance tester can use the AC four-terminal test method to measure the battery internal resistance, further improving the measurement accuracy.

[0037] As a further improvement of the present utility model, the second connecting portion 21 further includes a first elastic member 213 and a second elastic member 214; the first elastic member 213 is received in the first receiving cavity 211, one end of the first elastic member 213 is electrically connected to the first connecting terminal 131, and the other end of the first elastic member 213 is electrically connected to the first probe 231; the second elastic member 214 is received in the second receiving cavity 212, one end of the second elastic member 214 is electrically connected to the second connecting terminal 132, and the other end of the second elastic member 214 is electrically connected to the second probe 232. By providing the first elastic member 213 and the second elastic member 214, the first probe 231 is electrically connected to the first connecting terminal 131 through the first elastic member 213, and the second probe 232 is electrically connected to the second connecting terminal 132 through the second elastic member 214. When the first probe 231 and the second probe 232 contact the battery under test for internal resistance measurement, the provision of the first elastic member 213 and the second elastic member 214 ensures that the first probe 231 and the second probe 232 can fully contact the battery under test, avoiding poor contact from affecting the measurement accuracy; the first elastic member 213 is received in the first receiving cavity 211, and the second elastic member 214 is received in the second receiving cavity 212, ensuring that the elastic members will not deviate when compressed or stretched, and avoiding deviation of the first probe 231 and the second probe 232 during measurement from affecting the contact effect.

[0038] As a further improvement of the present utility model, contact portions 233 are provided at the ends of the first probe 231 and the second probe 232. The diameter of the contact portion 233 is larger than the diameters of the first probe 231 and the second probe 232, and the contact portion 233 is circular or conical. By providing the diameter of the contact portion 233 to be larger than the diameters of the first probe 231 and the second probe 232, the diameter of the probe tip is increased, effectively controlling the total internal resistance of the entire wire and ensuring its accuracy. By providing the contact portion 233 to be circular or conical, it is ensured that the contact between the first probe 231 and the second probe 232 and the battery under test during measurement is point contact, avoiding excessive contact area from generating a large impedance and improving the measurement accuracy.

[0039] As a further improvement of the present utility model, the third connecting portion 22 includes a third accommodating cavity 221 and a fourth accommodating cavity 222. The third accommodating cavity 221 is used for accommodating the first connecting terminal 131, and the fourth accommodating cavity 222 is used for accommodating the second connecting terminal 132. By providing the third accommodating cavity 221 and the fourth accommodating cavity 222, the first connecting terminal 131 is accommodated in the third accommodating cavity 221, and the second connecting terminal 132 is accommodated in the fourth accommodating cavity 222, preventing the connection between the male seat 10 and the female seat 20 from becoming unstable and falling off during mating connection, which may affect the measurement effect, and improving the connection stability of the test joint.

[0040] As a further improvement of the present utility model, the second probe head 24 includes a first clamping portion 241 and a second clamping portion 242. The first clamping portion 241 is electrically connected to the first connecting terminal 131 through a first wire 243, and the second clamping portion 242 is electrically connected to the second connecting terminal through a second wire 244. The first clamping portion 241 and the second clamping portion 242 are alligator clips or flat clips. By connecting the first clamping portion 241 and the second clamping portion 242 to the first connecting terminal 131 and the second connecting terminal 132 respectively, the battery internal resistance tester can use the AC four-terminal test method to measure the battery internal resistance, further improving the measurement accuracy. In practical applications, according to different application scenarios, the first probe 231 and the second probe 232 of the first probe head 23 or the first clamping portion 241 and the second clamping portion 242 of the second probe head 24 can be selected for measurement. Further, the first clamping portion 241 and the second clamping portion 242 can be selected as alligator clips or flat clips, expanding the applicable range of the test joint and making the battery internal resistance tester applicable to a variety of test scenarios.

[0041] As a further improvement of the present utility model, the male seat housing 11 includes a first housing 111, a second housing 112, a third housing 113, and a fourth housing 114 that are connected in sequence. The diameters of the first housing 111 and the second housing 112 are equal. The diameter of the third housing 113 is smaller than the diameter of the second housing 112 and larger than the diameter of the fourth housing 114. By providing that the male seat housing 11 includes a first housing 111, a second housing 112, a third housing 113, and a fourth housing 114 that are connected in sequence, and the diameter of the third housing 113 is smaller than the diameter of the second housing 112 and larger than the diameter of the fourth housing 114, when the male seat 10 and the female seat 20 are in mating contact, the male seat 10 is prevented from being squeezed and damaged, and the strength of the male seat 10 is improved.

[0042] As a further improvement of the present utility model, a buffer member 115 is provided between the first housing 111 and the second housing 112. By providing the buffer member 115 between the first housing 111 and the second housing 112, when the male seat 10 is in contact with the female seat 20, it plays a buffering role for the pressure of the extrusion contact, and improves the contact performance of the test joint.

[0043] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0044] The above embodiments only express the preferred embodiments of the present utility model, and the description is relatively specific and detailed, but it cannot be understood as a limitation to the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model should be subject to the appended claims.

Claims

1. A test connector for an internal resistance tester, characterized in that, It includes a male seat and a female seat which is cooperatively connected with the male seat; The male seat includes a male seat housing and a conductive core disposed in the male seat housing. A first connection portion extending out of the male seat housing is provided at an end of the conductive core, and the first connection portion is electrically connected to the conductive core; The female seat includes a female seat housing and a second connection portion or a third connection portion disposed in the female seat housing. The second connection portion is electrically connected to the first connection portion and a first probe head, and the third connection portion is electrically connected to the first connection portion and a second probe head.

2. The test connector of the internal resistance tester according to claim 1, wherein: The first connection portion includes a first connection terminal and a second connection terminal, and the first connection terminal and the second connection terminal are electrically connected to the conductive core.

3. The test connector of the internal resistance tester according to claim 2, characterized in that: The second connection portion includes a first accommodation cavity and a second accommodation cavity. The first accommodation cavity is used for accommodating the first connection terminal, and the second accommodation cavity is used for accommodating the second connection terminal.

4. The test connector of the internal resistance tester according to claim 3, characterized in that: The first probe head includes a first probe and a second probe. The first probe is electrically connected to the first connection terminal, and the second probe is electrically connected to the second connection terminal.

5. The test connector of the internal resistance tester according to claim 4, characterized in that: The second connection portion further includes a first elastic member and a second elastic member; The first elastic member is accommodated in the first accommodation cavity. One end of the first elastic member is electrically connected to the first connection terminal, and the other end of the first elastic member is electrically connected to the first probe; The second elastic member is accommodated in the second accommodation cavity. One end of the second elastic member is electrically connected to the second connection terminal, and the other end of the second elastic member is electrically connected to the second probe.

6. The test connector of the internal resistance tester according to claim 5, characterized in that: Contact portions are provided at ends of the first probe and the second probe. The diameter of the contact portion is larger than the diameters of the first probe and the second probe, and the contact portion is circular or conical.

7. The test connector of the internal resistance tester according to claim 2, characterized in that: The third connection portion includes a third accommodation cavity and a fourth accommodation cavity. The third accommodation cavity is used for accommodating the first connection terminal, and the fourth accommodation cavity is used for accommodating the second connection terminal.

8. The test connector of the internal resistance tester according to claim 7, characterized in that: The second probe head includes a first clamping portion and a second clamping portion. The first clamping portion is electrically connected to the first connection terminal through a first wire, and the second clamping portion is electrically connected to the second connection terminal through a second wire. The first clamping portion and the second clamping portion are alligator clips or flat clips.

9. The test connector of the internal resistance tester according to claim 1, characterized in that: The male seat housing includes a first housing, a second housing, a third housing, and a fourth housing that are sequentially connected. The diameters of the first housing and the second housing are equal, and the diameter of the third housing is smaller than that of the second housing and larger than that of the fourth housing.

10. The test connector of the internal resistance tester according to claim 9, characterized in that: A buffer member is provided between the first housing and the second housing.

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