CN218037237U

CN218037237U - Test assembly and test device

Info

Publication number: CN218037237U
Application number: CN202221686811.8U
Authority: CN
Inventors: 李亚荣; 吴天宇; 裴婷婷; 陈利权
Original assignee: Hubei Eve Power Co Ltd
Current assignee: Hubei Eve Power Co Ltd
Priority date: 2022-07-01
Filing date: 2022-07-01
Publication date: 2022-12-13
Anticipated expiration: 2032-07-01

Abstract

The utility model relates to a battery technology field especially relates to a test assembly and testing arrangement. The test assembly comprises a connecting row and a voltage line, and a first hole penetrating through the connecting row in the thickness direction is formed in the connecting row. When the connector bar links to each other with the utmost point post of battery, first hole just is just to utmost point post, and the terminal on voltage line is worn to locate in first hole and butt in utmost point post to measure the magnitude of voltage of battery. The testing device enables the voltage line to be directly connected with the pole column through the testing assembly and directly measures the voltage value of the battery, internal resistance and contact internal resistance voltage division of the connection row are avoided, deviation between a measuring result of the voltage line and actual voltage of the battery is eliminated, low energy efficiency of the battery measured by the testing assembly and large direct current internal resistance of the battery are avoided, and testing accuracy is improved.

Description

Test assembly and test device

Technical Field

The utility model relates to a battery technology field especially relates to a test assembly and testing arrangement.

Background

When the lithium cell carries out the electrical property test, the utmost point post electricity with testing arrangement's electric current line and voltage line through connecting the aluminium row with the battery is connected to gather parameter information such as the current value and the voltage value of battery respectively.

In the electrical property testing process, because the connection aluminum bar has certain internal resistance, the internal contact resistance can be generated when the current line is in poor contact with the connection aluminum bar, so that the voltage division condition exists in the connection aluminum bar, the voltage value measured by the voltage line is larger than the actual voltage value of the battery cell, the deviation between the measured value and the actual value causes the internal resistance testing result of the battery cell to be larger, the measured energy efficiency is lower, and the testing accuracy is reduced.

Therefore, a testing assembly and a testing apparatus are needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a test subassembly and testing arrangement to the magnitude of voltage of accurate measurement battery improves the accuracy of test.

To achieve the purpose, the technical proposal adopted by the utility model is that:

a test assembly comprises a connecting row and a voltage line, wherein the connecting row is provided with a first hole penetrating through the connecting row in the thickness direction;

when the connector bar links to each other with the utmost point post of battery, first hole just is right to utmost point post, the terminal on voltage line wears to locate in first hole and butt in utmost point post to measure the voltage value of battery.

Preferably, the first hole is a threaded hole, and the terminal of the voltage line is in threaded connection with the first hole.

Preferably, the connection row includes:

a main body row; and

and one end of the main body row in the thickness direction of the main body row extends outwards to be provided with the guide pillar, and the guide pillar is provided with the first hole.

Preferably, the end surface of the main body row provided with the guide pillars is provided with a groove along the circumferential direction of the guide pillars.

Preferably, the thickness of the main body row is 2mm to 4mm, the depth of the groove is 1mm to 1.5mm, and the hole depth of the first hole is 4mm to 8mm.

Preferably, the main body row and the guide posts are integrally formed by punching.

Preferably, the test assembly further comprises:

and when the connecting bar is connected with the pole of the battery, the terminal of the current line is connected with the connecting bar.

Preferably, the connection row is further provided with a second hole penetrating through the connection row in the thickness direction, and the terminal of the current line is connected with the second hole through a bolt.

Preferably, the first hole and the second hole are respectively located at two ends of the connecting row along the length direction of the connecting row.

A testing device comprises the testing assembly.

The utility model has the advantages that:

the utility model provides a test assembly, when the connecting row links to each other with the utmost point post of battery, the first hole is just to utmost point post, the terminal of voltage line is worn to locate first downthehole and butt in utmost point post for the voltage line directly links to each other and the voltage value of direct measurement battery with utmost point post, the internal resistance and the contact internal resistance partial pressure of having avoided the connecting row, the measuring result of voltage line and the deviation of the actual voltage of battery have been eliminated, the energy efficiency of having avoided test assembly measuring battery is on the low side and battery direct current internal resistance is on the large side, the accuracy of test has been improved.

The utility model provides a testing arrangement passes through above-mentioned test assembly for the direct voltage value who links to each other and the direct measurement battery with utmost point post of voltage line has avoided the internal resistance and the contact internal resistance partial pressure of bank of connections, has eliminated the measuring result of voltage line and the actual voltage's of battery deviation, and the energy efficiency of having avoided the battery of test assembly measurement is on the low side and battery direct current internal resistance is on the large side, has improved the accuracy of test.

Drawings

Fig. 1 is an assembly structure diagram of a connection row and a voltage line provided by an embodiment of the present invention.

The component names and designations in the drawings are as follows:

1. a connecting row; 11. a main body row; 110. a second hole; 111. a groove; 12. a guide post; 120. a first hole;

2. and a voltage line.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements related to the present invention are shown in the drawings.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

The embodiment discloses a testing device which is mainly used for testing the electrical property of a battery. Specifically, the testing device comprises a charging and discharging mechanism and a testing assembly, wherein the testing assembly comprises a connecting aluminum row, a voltage line and a current line. When the electrical property of the battery needs to be tested, the positive pole column and the negative pole column of the battery are respectively welded with a connecting aluminum bar, and the connecting aluminum bar is provided with a through hole. The positive pole of charge-discharge mechanism is connected in the connection aluminium row on the positive post of battery through a voltage line and an electric current line to through the bolt with voltage line and electric current line fixed mounting in the through-hole. The negative pole of charge-discharge mechanism passes through a voltage line and a current line and connects the connection aluminium row on the negative pole post of battery to through-hole with voltage line and current line fixed mounting through the bolt. And finally, respectively measuring data such as the voltage value, the current value and the like of the battery according to a test flow.

In the testing process, due to the fact that the internal resistance of the aluminum bar and the contact internal resistance are subjected to partial pressure, the voltage value acquired by the voltage line is larger than the actual voltage value of the battery cell, so that the measured energy efficiency is low, the direct current internal resistance of the battery is tested greatly, and the accuracy of the testing result is reduced.

In order to solve the above problem, as shown in fig. 1, this embodiment further discloses a testing assembly, which specifically includes a connection row 1 and a voltage line 2, and the connection row 1 is provided with a first hole 120 penetrating through the thickness direction of the connection row 1. When the connection row 1 is connected with the pole of the battery, the first hole 120 is right opposite to the pole, and the terminal of the voltage line 2 is arranged in the first hole 120 in a penetrating way and is abutted against the pole so as to measure the voltage value of the battery.

In this embodiment, the voltage line 2 of the testing component is directly connected with the pole and directly measures the voltage value of the battery, so that the internal resistance and the contact internal resistance voltage division of the connecting bar 1 are avoided, the deviation between the measurement result of the voltage line 2 and the actual voltage of the battery is eliminated, the low energy efficiency of the battery measured by the testing component and the large direct current internal resistance of the battery are avoided, and the testing accuracy is improved.

It should be noted that the terminals of the voltage lines 2 are insulated from the connection bank 1. Can be through wrapping up insulation support at the naked metal part of 2 terminals on voltage line, be equipped with the screw thread that matches with first hole 120 on the insulation support, the terminal of voltage line 2 passes through insulation support and 1 threaded connection of connector bank to avoid voltage line 2 to gather the voltage of connector bank 1, improved the accuracy of the measuring result of voltage line 2. Of course, the insulation of the terminal of the voltage line 2 from the connecting row 1 can also be achieved by applying an insulating glue or the like, and is not limited in particular here.

The connecting bar 1 of the embodiment is an aluminum bar, so that the conductive performance is better, the processing is convenient, and the cost is lower. Of course, the connecting bar 1 may also be a conductive bar such as a copper bar, which is not limited herein.

Specifically, first hole 120 is the screw hole, and the terminal of voltage line 2 and first hole 120 threaded connection for voltage line 2 passes through threaded connection with the connector bank 1, not only makes voltage line 2 can quick mounting on connector bank 1, has improved the installation effectiveness of voltage line 2 and connector bank 1, has improved the stability and the reliability that voltage line 2 and connector bank 1 are connected simultaneously, thereby has guaranteed the reliable connection of voltage line 2 and battery utmost point post.

The thickness of the connection row 1 of this embodiment is 2mm to 4mm. For example, the thickness of the connection row 1 may be 2mm, 3mm, 4mm, or the like.

In order to ensure the reliable connection between the terminal of the voltage line 2 and the connecting row 1, as shown in fig. 1, the connecting row 1 includes a main body row 11 and a guide pillar 12, one end of the main body row 11 along the thickness direction thereof extends outwards to form the guide pillar 12, and the guide pillar 12 is opened with a first hole 120. The guide pillar 12 extends the length of the first hole 120, thereby increasing the contact length of the first hole 120 with the terminal of the voltage line 2, facilitating the terminal of the voltage line 2 to be reliably screwed into the first hole 120.

Specifically, the thickness of the main body row 11 is 2mm to 4mm, and the hole depth of the first holes 120 is 4mm to 8mm. I.e., the axial length of the threads in the first bore 120 is 4mm to 8mm. For example, the axial length of the threads within the first bore 120 is 4mm, 5mm, 7mm, 8mm, or the like.

It should be noted that, the main body row 11 and the guide pillars 12 of the present embodiment are integrally formed by stamping, which is convenient for processing the connecting row 1, improves the processing efficiency of the connecting row 1, and reduces the production cost.

The connection bar 1 of the present embodiment is welded to the poles of the battery. Since the first holes 120 of the guide pillars 12 are disposed opposite to the poles, part of the connection bar 1 around the guide pillars 12 needs to be welded to the poles, so as to electrically connect the connection bar 1 and the poles. In order to facilitate the welding of the connecting row 1, as shown in fig. 1, the end surface of the main body row 11 provided with the guide pillars 12 is provided with grooves 111 along the circumferential direction of the guide pillars 12, so that the thickness of the part to be welded of the connecting row 1 is reduced, the welding difficulty is reduced, and the welding quality is improved.

In particular, since the pole is generally circular, the groove 111 of this embodiment is also circular, and the guide post 12 is located at the center of the groove 111. The size of the groove 111 can be adjusted according to the welding requirement, and is not limited in detail.

The depth of the groove 111 of the present embodiment is 1mm to 1.5mm. For example, the depth of the groove 111 may be 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, or the like.

The test assembly of this embodiment still includes the electric current line, and when the terminal row 1 links to each other with the utmost point post of battery, the terminal of electric current line links to each other with the terminal row 1 to measure the current value of battery.

Specifically, still set up the second hole 110 that runs through its thickness direction on the run-on 1, the terminal of electric current line passes through bolted connection with second hole 110, has realized the reliable installation of electric current line, need not to reform transform the processing to the terminal of electric current line simultaneously, has reduced test assembly's cost.

As shown in fig. 1, the first hole 120 and the second hole 110 are respectively located at two ends of the connection row 1 along the length direction thereof to facilitate the installation of the current line and the voltage line 2 and avoid the interference therebetween.

The above embodiments have been described only the basic principles and features of the present invention, and the present invention is not limited by the above embodiments, and is not departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The testing assembly is characterized by comprising a connecting row (1) and a voltage line (2), wherein a first hole (120) penetrating through the connecting row (1) in the thickness direction is formed in the connecting row (1);

when the connecting row (1) is connected with a pole of a battery, the first hole (120) is right opposite to the pole, and a terminal of the voltage line (2) penetrates through the first hole (120) and abuts against the pole to measure the voltage value of the battery.

2. The test assembly according to claim 1, wherein the first hole (120) is a threaded hole, the terminal of the voltage line (2) being screwed with the first hole (120).

3. Test assembly according to claim 1, characterized in that the connection bank (1) comprises:

a main body row (11); and

the guide post (12) extends outwards from one end of the main body row (11) along the thickness direction of the main body row, and the first hole (120) is formed in the guide post (12).

4. Testing assembly according to claim 3, characterized in that the end face of the main body row (11) provided with the guide pillars (12) is grooved (111) in the circumferential direction of the guide pillars (12).

5. The test assembly according to claim 4, wherein the thickness of the body row (11) is between 2mm and 4mm, the depth of the groove (111) is between 1mm and 1.5mm, and the hole depth of the first hole (120) is between 4mm and 8mm.

6. The test assembly according to claim 3, characterized in that the main body row (11) is integrally formed with the guide pillars (12) by stamping.

7. The test assembly of any one of claims 1-6, further comprising:

and when the connecting bar (1) is connected with the pole of the battery, the terminal of the current line is connected with the connecting bar (1).

8. The test assembly according to claim 7, wherein the connection row (1) further comprises a second hole (110) penetrating through the thickness direction of the connection row, and the terminal of the current line is connected to the second hole (110) through a bolt.

9. The test assembly according to claim 8, wherein the first aperture (120) and the second aperture (110) are located at respective ends of the connection row (1) along its length.

10. A test device comprising a test assembly according to any one of claims 1 to 9.