Tab wiring auxiliary tool for aqueous sodium ion battery pack

Abstract

The utility model relates to the field of water system sodium ion battery production and detection tools, in particular to a tab wiring auxiliary tool for a water system sodium ion battery pack, which comprises a rear side plate and a front side plate, the rear side plate is fixedly connected with the front side plate, and a metal tab clamping groove is arranged between the rear side plate and the front side plate. A nut clamping groove is formed in the middle of the rear side plate, a notch is formed in the middle of the front side plate, and the upper portion of the notch is through. The tab wiring auxiliary tool for the water-based sodium ion battery pack is simple in structure, convenient to manufacture and use, and capable of greatly improving the connection efficiency of the battery pack terminals and enabling the terminals to be connected more firmly.

Description

Technical Field

[0001] The utility model relates to the field of battery assembly tooling, in particular to a tab wiring auxiliary tooling for aqueous sodium ion battery packs. Background Art

[0002] The top edge of the shell of the aqueous sodium-ion battery pack is provided with a pole lug. The pole lug is an exposed stainless steel metal pole lug with a connection hole in the lower middle portion of the metal pole lug. The connection hole has two functions. One function is to connect the test terminal through the connection hole for testing after the battery pack is produced. The other function is that during battery pack assembly, the battery packs must be connected through the connection terminal. In order to ensure the stability of the connection between the battery packs, it is usually necessary to ensure the connection strength between the connection terminal and the metal pole lug. The thickness of the metal pole piece is usually only 1.5mm. If a threaded hole is tapped in the metal pole piece, only one thread can be tapped, which cannot achieve the required connection strength. Increasing the thickness of the metal pole piece will increase the manufacturing cost. Therefore, in the prior art, it is preferred to open a through hole in the metal pole piece and fasten the test terminal or connection terminal with bolts and nuts. However, the gap between the inner side of the metal tab and the outer wall of the shell is very small, usually only 8 mm. It is difficult to assemble and fix the nut between the inner side of the metal tab and the outer wall of the battery shell using conventional tooling for fixing the nut. Therefore, it is necessary to design a special tooling to achieve the connection between the cable test terminal and the metal tab. Utility Model Content

[0003] The purpose of the utility model is to provide a tab wiring auxiliary tool for aqueous sodium ion battery packs to address the problem that when connecting the metal tabs on the top edge of the shell of the aqueous sodium ion battery pack described in the background technology to the cable test terminal or the connection terminal, the gap between the metal tabs and the outer wall of the battery pack shell is very small, making it difficult to connect using conventional tools.

[0004] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0005] A tab wiring auxiliary tooling for an aqueous sodium-ion battery pack comprises a rear side plate and a front side plate, wherein the rear side plate and the front side plate are fixedly connected, a metal tab slot is provided between the rear side plate and the front side plate, a nut slot is provided in the middle of the rear side plate, and a notch is provided in the middle of the front side plate, with a through passage above the notch.

[0006] In the above solution, the left and right sides of the front side plate are respectively provided with fixing holes, which are threaded holes. Screws for locking the metal tabs are installed in the fixing holes, and the rear sides of the fixing holes are connected to the metal tab slots.

[0007] In the above solution, the nut slot includes an upper vertical slot and a lower nut slot, the upper end of the vertical slot is through, and the shape of the nut slot corresponds to the shape of the hexagonal nut.

[0008] In the above solution, the thickness of the nut slot is 1.1-1.2 times that of the nut used.

[0009] In the above solution, a baffle is provided on the rear side of the nut slot.

[0010] In the above solution, the width of the metal tab slot is 1.05-1.1 times the width of the metal tab, and the thickness is 1.05-1.1 times the thickness of the metal tab.

[0011] The utility model has positive effects: the auxiliary tooling for the tab wiring of the aqueous sodium ion battery pack of the utility model has a simple structure, is easy to manufacture, and is easy to use, can greatly improve the connection efficiency of the battery pack terminals, and can make the terminal connection more secure. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural schematic diagram of the tab wiring auxiliary tooling for aqueous sodium ion battery packs of the present invention.

[0013] Figure 2 This is a schematic top view of the structure of the tab wiring auxiliary tooling for aqueous sodium ion battery packs of the present invention.

[0014] Figure 3 Schematic diagram of the structure of the battery pack shell.

[0015] Figure 4 This is an installation diagram for connecting the terminal to the metal lug through bolts and nuts.

[0016] Figure 5 This is a schematic diagram of the structure after the terminal is installed with bolts and nuts.

[0017] The reference numerals in the figure are rear side plate 1, front side plate 2, notch 21, fixing hole 22, nut slot 3, vertical slot 31, nut slot 32, baffle 33, metal tab slot 4, battery pack housing 5, metal tab 6, through hole 61, bolt 7, terminal 8, nut 9, and spring washer 10. DETAILED DESCRIPTION

[0018] The following examples clearly and completely describe the technical solutions of the present invention. Obviously, the examples described are only a portion of the embodiments of the present invention, not all of them. Based on the examples of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0019] like Figure 1 and 2 As shown, the tab wiring auxiliary tooling for aqueous sodium ion battery packs of the present invention includes a rear side plate 1 and a front side plate 2.

[0020] The rear side panel 1 and the front side panel 2 can be made of a material with a certain strength, preferably an aluminum alloy, stainless steel or other rust-proof material.

[0021] The rear side panel 1 and the front side panel 2 are fixedly connected and are preferably formed in one piece.

[0022] As attached Figure 1 As shown, the rear side plate 1 can be made of a rectangular plate, and a nut slot 3 is provided in the middle of the rear side plate 1. The nut slot 3 includes an upper vertical slot 31 and a lower nut slot 32. The upper end of the vertical slot 31 has a through notch, and the shape of the lower nut slot 32 corresponds to the shape of the hexagonal nut. The lower nut slot 32 is used to position and fix the nut 9. After the nut 9 is installed in the nut slot 32, the hexagonal edge on the outer periphery of the nut 9 forms a circumferential limit with the nut slot 32, so that the nut 9 will not rotate during the connection process with the bolt 7. After the nut 9 is connected to the bolt 7, when the auxiliary tooling is removed from the metal pole ear 6, the nut 9 must pass through the vertical slot 31 and detach from the rear side plate 1 from the notch at the top.

[0023] As a preferred solution, the thickness of the nut slot 3 is 1.1-1.2 times that of the nut used. This can not only limit the range of motion of the nut 9, but also prevent the nut 9 from being stuck or moving during the insertion of the tooling into the tab 6.

[0024] As a preferred solution, a baffle 33 is provided on the rear side of the nut retaining groove 3, that is, the rear side of the nut retaining groove 3 is closed. This arrangement can prevent the nut 9 from falling out from the rear side.

[0025] The front side plate 2 can be a rectangular plate, with a notch 21 provided in the middle of the front side plate 2, and a through-hole 21 is provided above the notch. Through this arrangement, after the metal pole ear 6 is inserted into the metal pole ear slot 4, the position of the through hole 61 of the metal pole ear 6 can be located in the notch 21, which is convenient for connecting the test terminal or the connection terminal to the metal pole ear 6, and convenient for removing the auxiliary tooling from the metal pole ear 6 after the connection is completed.

[0026] A metal tab slot 4 is provided between the rear side plate 1 and the front side plate 1 . To facilitate the insertion of the metal tab 6 into the metal tab slot 4 , the width of the metal tab slot 4 is 1.05-1.1 times that of the metal tab 6 , and the thickness is 1.05-1.1 times that of the metal tab 6 .

[0027] On the front side plate 2, fixing holes 22 are respectively provided on the left and right sides. The fixing holes 22 are threaded holes. Screws for locking the metal tabs are installed in the fixing holes 22. The rear sides of the fixing holes 22 are connected to the metal tab slots 4. With this arrangement, after the metal tab 6 is inserted into the metal tab slots 4, the screws can be tightened. The rear ends of the screws press against the front surface of the metal tab 6, thereby fixing the tooling to the metal tab 6. This facilitates connecting the test terminal or the connection terminal to the metal tab 6 via the bolts 7 and nuts 9.

[0028] like Figure 3-5 As shown, the auxiliary tooling for the tab wiring of the aqueous sodium ion battery pack of the present invention, when the gap between the battery pack shell 5 and the metal tab 6 is very small, can be used to quickly connect the test terminal 8 or the connection terminal 8 on the metal tab 6 through the bolt 7 and the nut 9 through the auxiliary tooling of the present invention, and ensure the firmness of the connection. The specific connection method is to first put the nut 9 to be connected into the nut groove 32 on the rear side plate 1, then insert the metal tab 6 into the metal tab slot 4, so that the threaded hole of the nut installed in the nut groove 32 is consistent with the position of the through hole 61 on the metal tab 6, and then tighten the screw in the fixing hole 22 on the front side plate 2 to fix the auxiliary tooling on the metal tab 6; then put the test terminal 8 or the connection terminal 8 on the screw of the bolt 7, and the test terminal and the connection terminal can preferably use cold-pressed terminal connection wire, and pass the rear end of the screw through the through hole 61 on the metal tab 6 and into the threaded hole of the nut 9 on the rear side plate 1, and turn the screw to tighten the screw and the nut 9 to the specified torque. Loosen the screws on the front side plate 2 to release the connection between the auxiliary tooling and the metal tab 6. Then, remove the auxiliary tooling from the metal tab 6 to complete the installation of the test terminal or auxiliary terminal. To make the connection between the bolt 7 and the nut 9 more stable, a spring washer 10 can be provided on the bolt 7. The elastic force of the spring washer can make the connection between the bolt 7 and the nut 9 more secure.

[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tab wiring auxiliary tool for aqueous sodium ion battery packs, characterized in that: It includes a rear side plate and a front side plate, which are fixedly connected. A metal ear slot is provided between the rear side plate and the front side plate, a nut slot is provided in the middle of the rear side plate, and a notch is provided in the middle of the front side plate, with a through hole above the notch.

2. The tab wiring auxiliary tooling for aqueous sodium ion battery pack according to claim 1, characterized in that: The front side plate is provided with fixing holes on the left and right sides respectively. The fixing holes are threaded holes. Screws for locking the metal tabs are installed in the fixing holes. The rear sides of the fixing holes are connected to the metal tab slots.

3. The tab wiring auxiliary tooling for aqueous sodium ion battery pack according to claim 1, characterized in that: The nut clamping slot includes an upper vertical slot and a lower nut slot. The upper end of the vertical slot is through-connected, and the shape of the nut slot corresponds to the shape of the hexagonal nut.

4. The tab wiring auxiliary tooling for aqueous sodium ion battery pack according to claim 1, characterized in that: The thickness of the nut slot is 1.1-1.2 times that of the nut used.

5. The tab wiring auxiliary tooling for aqueous sodium ion battery pack according to claim 1, characterized in that: A baffle is provided on the rear side of the nut clamping slot.

6. The tab wiring auxiliary tooling for aqueous sodium ion battery pack according to claim 1, characterized in that: The width of the metal tab slot is 1.05-1.1 times that of the metal tab, and the thickness is 1.05-1.1 times that of the metal tab.

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