CN219810768U - Busbar torsion attenuation test fixture - Google Patents

Abstract

The utility model belongs to the technical field of batteries, and discloses a busbar torsion attenuation test fixture which is used for fixing a busbar assembly, wherein the busbar assembly comprises a first busbar, a second busbar and a copper bar, two ends of the copper bar are respectively and electrically connected with the first busbar and the second busbar, and the busbar torsion attenuation test fixture comprises a base, a mounting assembly and a connecting assembly, and the base is used for being connected with a vibrating table; the mounting assembly comprises a first mounting frame and a second mounting frame, and the first mounting frame and the second mounting frame are arranged on the base at intervals; the connecting assembly comprises two bolts, one bolt passes through one end of the copper bar and the first end of the first busbar and is in threaded connection with the first mounting frame according to the preset torsion, and the other bolt passes through the other end of the copper bar and the first end of the second busbar and is in threaded connection with the second mounting frame according to the preset torsion. The torsion attenuation test is carried out on the busbar independently by simulating the connection state of the busbar in the battery module, so that the cost of manpower and material resources is saved.

Description

Busbar torsion attenuation test fixture

Technical Field

The utility model relates to the technical field of batteries, in particular to a busbar torsion attenuation test tool.

Background

In the production process of the battery, the torsion attenuation condition of the bus bar under the vibration working condition needs to be tested, the bus bar is connected to the battery module in a traditional mode, the system-level vibration test is conducted on the battery module, and then the residual torsion of the bus bar is collected to evaluate the torsion attenuation.

Although the system-level vibration test can directly obtain test data, the consumption of manpower and material resources is large, so that excessive tests cannot be carried out, the available information which can be collected by a single system is very limited, and the torsion attenuation condition of the bus bars in most battery modules cannot be represented, and therefore, the accuracy of the test structure is not high. If more data is to be collected, multiple system-level vibration tests are required, which consumes a lot of resources and results in a waste of costs.

Therefore, it is desirable to provide a bus torsion attenuation testing tool to solve the above-mentioned problems.

Disclosure of Invention

The utility model provides a busbar torsion attenuation test tool which can simulate the connection state of a busbar in a battery module so as to independently carry out torsion attenuation test on the busbar, thereby saving the cost of manpower and material resources.

To achieve the purpose, the utility model adopts the following technical scheme:

busbar torsion decay test fixture for fixed busbar subassembly, the busbar subassembly includes first busbar, second busbar and copper bar, the both ends of copper bar respectively with first busbar with the second busbar electricity is connected, busbar torsion decay test fixture includes:

the base is used for being connected with the vibrating table;

the mounting assembly comprises a first mounting frame and a second mounting frame, and the first mounting frame and the second mounting frame are arranged on the base at intervals;

the connecting assembly comprises two bolts, one bolt penetrates through one end of the copper bar and the first end of the first busbar and is in threaded connection with the first mounting frame according to preset torsion, and the other bolt penetrates through the other end of the copper bar and the first end of the second busbar and is in threaded connection with the second mounting frame according to preset torsion.

Optionally, a first end of the first busbar is connected with a top end face of the first mounting frame, and a second end of the first busbar is connected with a side wall of the first mounting frame; and/or the number of the groups of groups,

the first end of the second busbar is connected with the top end face of the second mounting frame, and the second end of the second busbar is connected with the side wall of the second mounting frame.

Optionally, the first mounting frame and/or the second mounting frame are/is plate-shaped, and the first bus bar and/or the second bus bar are/is L-shaped.

Optionally, the installation component is provided with a plurality of, and a plurality of installation components interval sets up on the base.

Optionally, a plurality of first connection positions are arranged on the first mounting frame, a plurality of second connection positions are arranged on the second mounting frame, and the plurality of first connection positions and the plurality of second connection positions are arranged in a one-to-one correspondence manner to form a plurality of groups of connection positions;

the busbar assembly is provided with a plurality of connecting positions, and the plurality of busbar assemblies are connected with the plurality of groups of connecting positions in a matched mode through the plurality of connecting assemblies.

Optionally, the busbar torsion attenuation test tool further includes:

the insulating assembly is arranged between the first bus bars and the first mounting frame and used for insulating a plurality of first bus bars, and is arranged between the second bus bars and the second mounting frame and used for insulating a plurality of second bus bars.

Optionally, the insulation assembly comprises a first insulation plate and a plurality of insulation blocks, wherein a plurality of mounting grooves are formed in the first mounting frame and the second mounting frame at intervals, and the insulation blocks are correspondingly mounted in the mounting grooves;

the first insulating plate is arranged between the first busbar and the first mounting frame, and one bolt penetrates through one end of the copper bar, the first end of the first busbar and the first insulating plate and then is in threaded connection with the corresponding insulating block according to the preset torsion;

the first insulating plate is arranged between the second busbar and the second mounting frame, the other bolt penetrates through the other end of the copper bar, and the first end of the second busbar is in threaded connection with the corresponding insulating block according to the preset torsion after the first insulating plate.

Optionally, the insulating assembly further comprises a second insulating plate;

the second insulating plate is arranged on the outer side of the first mounting frame, and the first fastening piece penetrates through the second end of the first busbar and the second insulating plate and then is in threaded connection with the corresponding insulating block;

the second insulating plate is arranged on the outer side of the second mounting frame, and the second fastening piece penetrates through the second end of the second busbar and then is in threaded connection with the corresponding insulating block.

Optionally, two rows of vibrating table mounting holes are formed in the base.

Optionally, at least two hanging rings are symmetrically arranged at two ends of the base.

The utility model has the beneficial effects that:

the utility model provides a busbar torsion attenuation test fixture which comprises a base, a mounting assembly and a connecting assembly. One bolt passes one end of copper bar, behind the first end of first busbar according to predetermineeing torsion and first mounting bracket threaded connection, and another bolt passes the other end of copper bar, behind the first end of second busbar according to predetermineeing torsion and second mounting bracket threaded connection, thereby simulate the installed state of busbar subassembly in the battery module, during the test, the base of busbar torsion damping test fixture with assembled busbar subassembly is fixed and is vibrated on the shaking table, detect the torsion of bolt after the vibration is accomplished, obtain the torsion damping data of first busbar and second busbar, compare with the torsion damping data that obtains the busbar through the vibration test of module level among the prior art, manpower and material resources cost has been saved in the assurance test result accuracy.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following description will briefly explain the drawings needed in the description of the embodiments of the present utility model, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the contents of the embodiments of the present utility model and these drawings without inventive effort for those skilled in the art.

FIG. 1 is an exploded view of a tool for testing torsion attenuation of a busbar according to an embodiment of the present utility model;

FIG. 2 is an assembly diagram of a bus bar torsion attenuation test fixture and a bus bar assembly according to a first embodiment of the present utility model;

FIG. 3 is an exploded view of a tool for testing torsion attenuation of a busbar according to a second embodiment of the present utility model;

FIG. 4 is an exploded view of an assembly diagram of a bus torsion attenuation test fixture and a first and a second bus according to a second embodiment of the present utility model;

fig. 5 is a schematic structural diagram of an insulating block according to a second embodiment of the present utility model;

FIG. 6 is an assembly diagram of an insulating block and a mounting groove according to a second embodiment of the present utility model;

fig. 7 is an assembly diagram of a bus bar torsion attenuation testing tool and a bus bar assembly according to a second embodiment of the present utility model.

In the figure:

100. bus torsion attenuation test fixture; 110. a base; 111. a vibrating table mounting hole; 120. a mounting assembly; 121. a first mounting frame; 122. a second mounting frame; 123. a mounting groove; 131. a bolt; 141. a first insulating plate; 142. an insulating block; 1421. a first fixing groove; 1422. a second fixing groove; 143. a second insulating plate; 144. a first nut; 145. a second fastener; 146. a second nut; 150. a hanging ring; 200. a busbar assembly; 210. a first bus bar; 220. a second bus bar; 230. and a copper bar.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

Example 1

The embodiment provides a busbar torsion attenuation test fixture 100, which can simulate the connection state of a busbar in a battery module and further independently carry out torsion attenuation test on the busbar, thereby saving labor and material cost.

Specifically, as shown in fig. 1 and 2, the busbar torsion attenuation test fixture 100 can fix the busbar assembly 200, and the connection condition of the busbar assembly 200 and the busbar torsion attenuation test fixture 100 is the same as the connection condition of the busbar assembly 200 in the battery module. The busbar assembly 200 includes a first busbar 210, a second busbar 220 and a copper busbar 230, wherein two ends of the copper busbar 230 are respectively electrically connected with the first busbar 210 and the second busbar 220, one of the first busbar 210 and the second busbar 220 is a positive busbar, and the other is a negative busbar, for example, if the first busbar 210 is a positive busbar, the second busbar 220 is a negative busbar; if the first bus bar 210 is a negative bus bar, the second bus bar 220 is a positive bus bar. The structures of the first bus bar 210 and the second bus bar 220 may be the same or different, and may be selected according to actual needs. The busbar torsion attenuation test fixture 100 comprises a base 110, a mounting assembly 120 and a connecting assembly, wherein the base 110 is used for being connected with a vibrating table. The mounting assembly 120 includes a first mounting frame 121 and a second mounting frame 122, where the first mounting frame 121 and the second mounting frame 122 are spaced apart on the base 110, and the first mounting frame 121 may have the same structure as the second mounting frame 122 or may be different from the second mounting frame 122, specifically according to the structural arrangement of the first bus bar 210 and the second bus bar 220. Optionally, the first mounting frame 121 and the second mounting frame 122 are detachably connected to the base 110, such as by bolting, so as to facilitate the mounting and dismounting of the first mounting frame 121 and the second mounting frame 122. The connecting assembly comprises two bolts 131, wherein one bolt 131 passes through one end of the copper bar 230 and the first end of the first busbar 210 and is in threaded connection with the first mounting frame 121 according to a preset torque force, and the other bolt 131 passes through the other end of the copper bar 230 and the first end of the second busbar 220 and is in threaded connection with the second mounting frame 122 according to the preset torque force. During testing, the base 110 of the busbar torsion damping test fixture 100 of the busbar assembly 200 is fixed on a vibration table to vibrate, torsion of the two bolts 131 is detected by using torsion test equipment after vibration is completed, the torsion test equipment can be, but is not limited to, a torsion wrench, and torsion damping conditions of the busbar are obtained by testing torsion of the vibrated bolts 131. The busbar torsion attenuation test fixture 100 can replace a battery module, and can avoid module-level vibration test without affecting the accuracy of test results, thereby saving labor and material costs.

Preferably, with continued reference to fig. 2, in this embodiment, the first end of the first bus bar 210 is connected to the top end surface of the first mounting frame 121, and the second end of the first bus bar 210 is connected to the side wall of the first mounting frame 121, which can improve the connection strength between the first bus bar 210 and the first mounting frame 121. The connection manner of the second bus bar 220 and the second mounting frame 122 may also be the same as that of the first bus bar 210 and the first mounting frame 121, for example, the first end of the second bus bar 220 is connected to the top end surface of the second mounting frame 122, and the second end of the second bus bar 220 is connected to the side wall of the second mounting frame 122, so as to improve the connection strength between the second bus bar 220 and the second mounting frame 122. Of course, the connection manner between the second bus bar 220 and the second mounting frame 122 may be different from the connection manner between the first bus bar 210 and the first mounting frame 121, and may be set according to actual needs. Alternatively, in the present embodiment, the first mounting bracket 121 and the second mounting bracket 122 are plate-shaped structures, and the first bus bar 210 and/or the second bus bar 220 are L-shaped. In other embodiments, the shape of the first mounting frame 121 and the second mounting frame 122 may be other, according to the structural fit design of the first bus bar 210 and the second bus bar 220.

Preferably, the plurality of mounting assemblies 120 may be disposed on the base 110, and the plurality of mounting assemblies 120 are disposed on the base 110 at intervals, so that the plurality of bus bar assemblies 200 may be simultaneously fixed on the base 110 by disposing the plurality of mounting assemblies 120, so that a vibration test can be performed once, multiple groups of test data can be obtained, and the test efficiency is improved.

Optionally, with continued reference to fig. 2, the first mounting frame 121 is provided with a plurality of first connection positions, the second mounting frame 122 is provided with a plurality of second connection positions, and the plurality of first connection positions and the plurality of second connection positions are arranged in a one-to-one correspondence manner to form a plurality of groups of connection positions; the busbar assembly 200 is provided with a plurality of, and a plurality of busbar assemblies 200 are connected with the cooperation of multiunit hookup location through a plurality of coupling assembling, and a plurality of busbar assemblies 200 can be fixed simultaneously to a mounting assembly 120 promptly for single vibration can obtain multiunit test data, has improved test efficiency, and simultaneously, the more test data that gathers, the higher accuracy that obtains busbar torsion decay result.

Further, with continued reference to fig. 1 and 2, two rows of vibration table mounting holes 111 are provided on the base 110, and the base 110 and the vibration table may be connected by fastening screws through the vibration table mounting holes 111 and fastening connection between the vibration table and the vibration table. By providing two rows of vibration table mounting holes 111, suitable mounting holes can be selected according to actual needs to flexibly adjust the position of the base 110 so as to ensure the accuracy of the test result.

Further, with continued reference to fig. 1 and fig. 2, at least two hanging rings 150 are symmetrically arranged at two ends of the base 110, the hanging rings 150 are used for hanging the busbar torsion attenuation test fixture 100, the stability of the base 110 during hanging is improved by symmetrically arranging the hanging rings 150, the level of the base 110 during hanging is ensured, and the risk of collision between the mounting assembly 120 and the busbar assembly 200 during hanging is reduced.

Example two

The present embodiment provides a busbar torsion attenuation test fixture 100, which has substantially the same structure as the first embodiment, and is modified only based on the first embodiment. Therefore, only the differences between the two are described herein, and the same structure as that of the first embodiment of the present embodiment will not be described herein.

Because torsion attenuation test is required to be performed on the bus bars under the two working conditions of power on and power off, if the first mounting frame 121 and the second mounting frame 122 are made of conductive materials, when the plurality of bus bar assemblies 200 are simultaneously connected to the first mounting frame 121 and the second mounting frame 122, short circuit can occur between the plurality of bus bar assemblies 200 under the power on working condition, and the test cannot be performed, so that insulation between the mounting assembly 120 and the bus bar assemblies 200 is required to be avoided when the test is performed under the power on working condition, and current transmission of the mounting assembly 120 is avoided.

Specifically, as shown in fig. 3-7, the busbar torsion attenuation test fixture 100 further includes at least two insulation assemblies, wherein the insulation assemblies are disposed between the first busbar 210 and the first mounting frame 121 for insulating the plurality of first busbars 210, and between the second busbar 220 and the second mounting frame 122 for insulating the plurality of second busbars 220, i.e. one mounting assembly 120 corresponds to two insulation assemblies.

Optionally, with continued reference to fig. 1, 3, 4 and 7, the insulating assembly includes a first insulating plate 141 and a plurality of insulating blocks 142, a plurality of mounting slots 123 are disposed on the first mounting frame 121 and the second mounting frame 122 at intervals, the insulating blocks 142 are correspondingly mounted in the mounting slots 123, the insulating blocks 142 can be in interference fit with the mounting slots 123, and can also be fixed in the mounting slots 123 in a mode of bolting, so that the insulating assembly can be mounted according to practical needs. When the first insulating plate 141 is disposed between the first bus bar 210 and the first mounting frame 121, the first insulating plate 141 is used to insulate the first bus bar 210 from the first mounting frame 121, so as to prevent the first bus bar 210 from contacting the first mounting frame 121 to be electrically connected. One bolt 131 passes through one end of the copper bar 230, the first end of the first bus bar 210, and the first insulation plate 141 and then is connected with the corresponding insulation block 142 according to a predetermined torque. By providing the insulating block 142, on the one hand, the bolt 131 and the first mounting frame 121 can be insulated, and electrification of the first mounting frame 121 can be avoided; on the other hand, the first insulating plate 141 is generally made of bakelite plate, and strength and rigidity are not high, so in order to reduce the risk of damage of the bakelite plate, the bolts 131 are fixed to the insulating blocks 142. Similarly, when the first insulating plate 141 is disposed between the second bus bar 220 and the second mounting frame 122, the other bolt 131 passes through the other end of the copper bar 230, and the first end of the second bus bar 220 and the first insulating plate 141 are then screwed with the corresponding insulating block 142 according to a predetermined torque.

Preferably, with continued reference to fig. 5 and 6, the insulating block 142 is provided with a first fixing groove 1421, and the first nut 144 is pre-embedded in the first fixing groove 1421, so that the bolt 131 is in threaded connection with the first nut 144, which is beneficial to improving the connection strength between the bolt 131 and the insulating block 142.

Further, with continued reference to fig. 1, 3, 4 and 7, the insulating assembly further includes a second insulating plate 143, and in this embodiment, the second end of the first busbar 210 is connected to the side wall of the first mounting frame 121, so that the second insulating plate 143 needs to be provided to insulate the second end of the first busbar 210 from the first mounting frame 121, specifically, the second insulating plate 143 is provided on the outer side of the first mounting frame 121, and the first fastener is screwed to the corresponding insulating block 142 after passing through the second end of the first busbar 210 and the second insulating plate 143. The second insulating plate 143 is generally made of bakelite plate. Likewise, the second end of the second bus bar 220 is connected to the sidewall of the second mounting frame 122, and it is required to insulate the second end of the second bus bar 220 from the second mounting frame 122, specifically, the second insulating plate 143 is disposed at the outer side of the second mounting frame 122, and the second fastening member 145 is threaded with the corresponding insulating block 142 after passing through the second end of the second bus bar 220 and the second insulating plate 143.

Preferably, with continued reference to fig. 5 and 6, the insulating block 142 is provided with a second fixing groove 1422, and the second nut 146 is embedded in the second fixing groove 1422, so that the first fastening member or the second fastening member 145 is in threaded connection with the second nut 146, which is beneficial to improving the connection strength between the first fastening member or the second fastening member 145 and the insulating block 142. Alternatively, a plurality of second nuts 146 may be provided, and a plurality of first fasteners or second fasteners 145 may be provided correspondingly, which is advantageous in improving the mounting reliability of the second insulating plate 143.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. Busbar torsion decay test fixture for fixed busbar subassembly (200), busbar subassembly (200) include first busbar (210), second busbar (220) and copper bar (230), copper bar (230) both ends respectively with first busbar (210) with second busbar (220) electricity is connected, its characterized in that, busbar torsion decay test fixture includes:

a base (110) for connection to a vibrating table;

the mounting assembly (120) comprises a first mounting frame (121) and a second mounting frame (122), and the first mounting frame (121) and the second mounting frame (122) are arranged on the base (110) at intervals;

the connecting assembly comprises two bolts (131), wherein one bolt (131) penetrates through one end of the copper bar (230) and then is in threaded connection with the first mounting frame (121) according to a preset torsion force, and the other bolt (131) penetrates through the other end of the copper bar (230) and then is in threaded connection with the second mounting frame (122) according to the preset torsion force after penetrating through the first end of the second bus bar (220).

2. The busbar torque attenuation test fixture of claim 1, wherein a first end of the first busbar (210) is connected to a top end face of the first mounting bracket (121), and a second end of the first busbar (210) is connected to a side wall of the first mounting bracket (121); and/or the number of the groups of groups,

the first end of the second busbar (220) is connected with the top end face of the second mounting frame (122), and the second end of the second busbar (220) is connected with the side wall of the second mounting frame (122).

3. The busbar torsion attenuation test fixture according to claim 2, wherein the first mounting bracket (121) and/or the second mounting bracket (122) are plate-shaped structures, and the first busbar (210) and/or the second busbar (220) are L-shaped.

4. The busbar torsion attenuation test fixture according to claim 1, wherein a plurality of the mounting assemblies (120) are provided, and a plurality of the mounting assemblies (120) are arranged on the base (110) at intervals.

5. The busbar torsion attenuation test fixture according to claim 1, wherein a plurality of first connection positions are arranged on the first mounting frame (121), a plurality of second connection positions are arranged on the second mounting frame (122), and a plurality of first connection positions and a plurality of second connection positions are arranged in a one-to-one correspondence manner to form a plurality of groups of connection positions;

the bus bar assembly (200) is provided with a plurality of bus bar assemblies, and the plurality of bus bar assemblies (200) are connected with a plurality of groups of connection positions in a matching way through a plurality of connection assemblies.

6. The busbar torsion attenuation test fixture of claim 5, further comprising:

the insulating assembly is arranged between the first bus bars (210) and the first mounting frame (121), is used for insulating a plurality of the first bus bars (210), is arranged between the second bus bars (220) and the second mounting frame (122), and is used for insulating a plurality of the second bus bars (220).

7. The busbar torsion attenuation test fixture according to claim 6, wherein the insulating assembly comprises a first insulating plate (141) and a plurality of insulating blocks (142), a plurality of mounting grooves (123) are formed in each of the first mounting frame (121) and the second mounting frame (122) at intervals, and the insulating blocks (142) are correspondingly mounted in the mounting grooves (123);

the first insulating plate (141) is arranged between the first busbar (210) and the first mounting frame (121), and one bolt (131) passes through one end of the copper bar (230), the first end of the first busbar (210) and the first insulating plate (141) and then is in threaded connection with the corresponding insulating block (142) according to the preset torsion;

the first insulating plate (141) is arranged between the second busbar (220) and the second mounting frame (122), the other bolt (131) penetrates through the other end of the copper bar (230), and the first end of the second busbar (220) is in threaded connection with the corresponding insulating block (142) according to the preset torsion after the first insulating plate (141).

8. The busbar torsion attenuation test fixture of claim 7, wherein the insulating assembly further comprises a second insulating plate (143);

the second insulating plate (143) is arranged on the outer side of the first mounting frame (121), and a first fastener penetrates through the second end of the first busbar (210) and the second insulating plate (143) and is in threaded connection with the corresponding insulating block (142);

the second insulating plate (143) is arranged on the outer side of the second mounting frame (122), and the second fastening piece (145) penetrates through the second end of the second busbar (220) and then is in threaded connection with the corresponding insulating block (142).

9. The busbar torsion attenuation test fixture according to any one of claims 1 to 8, wherein two rows of vibration table mounting holes (111) are provided on the base (110).

10. The busbar torsion attenuation test fixture according to any one of claims 1 to 8, wherein at least two hanging rings (150) are symmetrically arranged at two ends of the base (110).