A connection structure of battery data acquisition line

Abstract

A connection structure of a battery data acquisition line includes a battery data acquisition line, an acquisition sheet and a battery busbar. The battery data acquisition line is connected to the acquisition sheet, and the acquisition sheet is connected to the battery busbar. A wire pressing interface for cooperating with the battery data acquisition line is provided at one end of the acquisition sheet, and a recessed portion for cooperating with the battery busbar is provided at the other end of the acquisition sheet. The battery busbar is provided with a plurality of positioning grooves for installing the acquisition sheet, and an opening or groove cooperating with the recessed portion is also provided on the battery busbar at the positioning groove. The battery data acquisition line is a copper wire wrapped with a wire sheath, and the wire pressing interface includes a large wire pressing interface for crimping the wire sheath of the battery data acquisition line and a small wire pressing interface for crimping the copper wire of the battery data acquisition line, and the large wire pressing interface is provided on the outside of the small wire pressing interface. The present application can not only enhance the connection strength of the battery data acquisition line, but also facilitate the connection operation, which helps to improve efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of battery data acquisition, in particular to a connection structure of a battery data acquisition line. Background Art

[0002] At present, the battery data acquisition line is generally connected to the battery busbar by welding or bolting to realize battery data acquisition. The connection strength between the battery data acquisition line and the battery busbar is an important indicator. The reliability of the connection strength is of great significance for ensuring that the power battery is not under-voltage or overcharged, and the normal operation of the entire system.

[0003] However, the existing battery data acquisition line is connected to the battery busbar through a nickel sheet. The nickel sheet is generally a flat thin sheet with a simple structure, which cannot effectively guarantee the connection strength between the nickel sheet and the battery busbar. Therefore, the battery data acquisition line can easily fall off the battery busbar, which makes it impossible to accurately collect the battery voltage, current, temperature and other data, greatly affecting the battery data collection work. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a connection structure of a battery data acquisition line which can enhance the connection strength of the battery data acquisition line and facilitate the connection operation, so as to facilitate unified welding and improve efficiency.

[0005] The technical problem to be solved by the utility model is achieved through the following technical solutions. The utility model is a connection structure of a battery data acquisition line, including a battery data acquisition line, a collection piece and a battery busbar for connecting to a battery cell, the battery data acquisition line is connected to the collection piece, the collection piece is connected to the battery busbar, a wire pressing interface for cooperating with the battery data acquisition line is provided at one end of the collection piece, a recessed portion for cooperating with the battery busbar is provided at the other end of the collection piece, a protrusion for upper and lower limit is also provided at the end of the recessed portion, a plurality of positioning grooves for installing the collection piece are provided on the battery busbar, and an opening or groove cooperating with the recessed portion is also provided on the battery busbar at the positioning groove.

[0006] The technical problem to be solved by the utility model can also be further achieved through the following technical solutions. For the connection structure of the battery data acquisition line described above, the battery data acquisition line is a copper wire wrapped with a wire sheath, and the wire crimping interface includes a large wire crimping interface for crimping the wire sheath of the battery data acquisition line and a small wire crimping interface for crimping the copper wire of the battery data acquisition line, and the large wire crimping interface is arranged on the outside of the small wire crimping interface.

[0007] The technical problem to be solved by the present invention can be further achieved through the following technical solutions. For the connection structure of the battery data acquisition line described above, the battery data acquisition line is a single-core or multi-core structure.

[0008] The technical problem to be solved by the present invention can be further achieved through the following technical solutions. For the connection structure of the battery data acquisition line mentioned above, the acquisition sheet is connected to the battery busbar aluminum bar by laser welding.

[0009] The technical problem to be solved by the utility model can also be further achieved through the following technical solutions. For the connection structure of the battery data acquisition line mentioned above, one end of the positioning groove extends to the edge of one side of the battery busbar, and an opening or groove is arranged at the other end of the positioning groove.

[0010] The technical problem to be solved by the present invention can be further achieved through the following technical solution. For the connection structure of the battery data acquisition line described above, the material of the acquisition sheet is a nickel sheet.

[0011] The technical problem to be solved by the utility model can also be further achieved through the following technical solutions. For the connection structure of the battery data acquisition line mentioned above, alignment holes for cooperating with the battery cells and alignment grooves for cooperating with the CCS integrated cover are also provided on the battery busbar.

[0012] Compared with the prior art, the utility model provides a connection structure for a battery data acquisition line, which not only enhances the connection strength, but also facilitates the connection operation. When in use, the acquisition sheet is first crimped, and then the acquisition sheet and the battery busbar are pre-fixed, and then the whole is placed in the CCS integrated cover plate, and finally the whole is welded, which improves efficiency and changes the previous connection method of welding a single nickel sheet to the aluminum bar and then loading them one by one into the CCS integrated cover plate, thereby improving labor productivity and having great production practice significance for improving the market competitiveness of new energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A structural schematic diagram of the utility model;

[0014] Figure 2 It is a structural schematic diagram of the collection piece of the utility model;

[0015] Figure 3 This is a usage state diagram of the utility model. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] Reference Figure 1-3 A connection structure of a battery data acquisition line 2, comprising a battery data acquisition line 2, a collection piece 3 and a battery busbar 1, wherein the battery busbar 1 is used to connect to a battery cell, so as to facilitate the series connection of multiple battery cells, and the collection piece 3 is mounted on the battery busbar 1, so as to facilitate the connection between the battery data acquisition line 2 and the battery busbar 1, and one end of the battery data acquisition line 2 is crimped on the collection piece 3, so as to facilitate the connection with the battery cell through the collection piece 3 and the battery busbar 1, so as to collect battery data, such as battery voltage, current, temperature and other data, and preferably, the battery data acquisition line 2 is a single-core or multi-core structure;

[0018] Preferably, the material of the collection sheet 3 is a nickel sheet. At the same time, the collection sheet 3 is installed on the battery busbar 1 by welding, and the connection strength is high. Further preferably, the collection sheet 3 is connected to the battery busbar 1 by laser welding, and the arrangement of the welding points is not unique;

[0019] Specifically, a crimping interface for cooperating with the battery data acquisition line 2 is provided at one end of the acquisition piece 3, and is used for crimping the battery data acquisition line 2. Preferably, the battery data acquisition line 2 is a copper wire wrapped with a wire sheath, and the crimping interface includes a large crimping interface 33 for crimping the wire sheath of the battery data acquisition line 2 and a small crimping interface 32 for crimping the copper wire of the battery data acquisition line 2. The large crimping interface 33 is provided on the outside of the small crimping interface 32. By providing the large crimping interface 33 and the small crimping interface 32, the wire sheath and the copper wire of the crimped battery data acquisition line 2 can be crimped in turn, which helps to improve the connection strength between the acquisition piece 3 and the battery data acquisition line 2.

[0020] A recessed portion 31 for cooperating with the battery busbar aluminum bar 1 is provided at the other end of the collecting piece 3, and a plurality of positioning grooves 4 for installing the collecting piece 3 are provided on the battery busbar aluminum bar 1. An opening or groove 5 cooperating with the recessed portion 31 is also provided on the battery busbar aluminum bar 1 at the positioning groove 4, so that before the collecting piece 3 and the battery busbar aluminum bar 1 are welded, the collecting piece 3 can be positioned and placed through the positioning groove 4, and the collecting piece 3 can be pre-fixed by cooperating with the opening or groove 5 and the recessed portion 31, so as to facilitate the quick and accurate pre-fixation of the collecting piece 3 to the battery busbar aluminum bar 1, which is convenient for the installation operation of the collecting piece 3 and the subsequent unified welding, thereby improving efficiency; preferably, one end of the positioning groove 4 extends to the edge of one side of the battery busbar aluminum bar 1, and the opening or groove 5 is provided at the other end of the positioning groove 4; at the same time, a protrusion 34 is also provided at the end of the recessed portion to strengthen the upper and lower limit of the collecting piece 3.

[0021] In order to facilitate the subsequent connection between the battery busbar 1 and the battery cell, the battery busbar 1 is also provided with an alignment hole 6 for cooperating with the battery cell and an alignment groove 7 for cooperating with the CCS integrated cover 8. The setting of the alignment groove 7 facilitates the battery busbar 1 to be quickly mounted on the CCS integrated cover 8, and the setting of the alignment hole 6 facilitates the alignment of the battery busbar 1 with the battery cell to ensure the accuracy of the installation.

[0022] When in use, first crimp the battery data acquisition line 2 onto the acquisition piece 3. The number of battery data acquisition lines 2 is determined according to actual conditions. The number of acquisition pieces 3 is consistent with the number of battery data acquisition lines 2 and corresponds one to one. Then, mount the battery busbar 1 onto the CCS integrated cover 8 (the CCS integrated cover 8 is also called the battery cover assembly, which is one of the important components in the energy storage battery system). Then, install all the acquisition pieces 3 crimped with the battery data acquisition lines 2 onto the battery busbar 1 one by one, and then perform unified welding to improve efficiency. Finally, mount the CCS integrated cover 8 onto the battery cell, and weld the battery busbar 1 to the battery cell.

Claims

1. A connection structure for a battery data acquisition line, characterized in that: It includes a battery data acquisition line, a acquisition sheet and a battery busbar aluminum bar for connecting to the battery cell. The battery data acquisition line is connected to the acquisition sheet, and the acquisition sheet is connected to the battery busbar aluminum bar. A wire pressing interface for cooperating with the battery data acquisition line is provided at one end of the acquisition sheet, and a recessed portion for cooperating with the battery busbar aluminum bar is provided at the other end of the acquisition sheet. Protrusions for upper and lower limit positions are also provided at the end of the recessed portion. A number of positioning grooves for installing the acquisition sheet are provided on the battery busbar aluminum bar, and an opening or groove cooperating with the recessed portion is also provided on the battery busbar aluminum bar at the positioning groove.

2. The connection structure of the battery data acquisition line according to claim 1, characterized in that: The battery data acquisition line is a copper wire wrapped with a wire sheath. The wire crimping interface includes a large wire crimping interface for crimping the wire sheath of the battery data acquisition line and a small wire crimping interface for crimping the copper wire of the battery data acquisition line. The large wire crimping interface is arranged on the outside of the small wire crimping interface.

3. The connection structure of the battery data acquisition line according to claim 1 or 2, characterized in that: The battery data acquisition line is a single-core or multi-core structure.

4. The connection structure of the battery data acquisition line according to claim 1, characterized in that: The collection sheet is connected to the battery busbar aluminum bar by laser welding.

5. The connection structure of the battery data acquisition line according to claim 1, characterized in that: One end of the positioning groove extends to the edge of one side of the battery busbar, and the opening or groove is arranged at the other end of the positioning groove.

6. The connection structure of the battery data acquisition line according to claim 1, characterized in that: The material of the collection sheet is nickel sheet.

7. The connection structure of the battery data acquisition line according to claim 1, characterized in that: The battery busbar is also provided with alignment holes for cooperating with the battery cells and alignment grooves for cooperating with the CCS integrated cover.

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