A structure for preventing battery reverse polarity assembly

Abstract

The present invention discloses a structure for preventing battery reverse-polarity assembly. The dimensions A from the inner pole column of the front-row cross bridge to the center of the battery cluster and the dimension B from the inner pole column of the rear-row cross bridge to the center of the battery cluster are designed to be unequal, and correspondingly, the electrode docking holes and the middle sunken holes inside the cover body are made to correspond; through the above design, the cover body with anti-reverse-fastening design corresponds and matches with the cross-bridge inner pole column inside the battery case. This solution is applicable to storage batteries with an even or odd number of battery clusters. After adopting this solution, the occurrence of single-cell reverse polarity and cover body assembly reverse polarity is completely solved without adding any components, and it does not affect the aesthetics and service performance, reducing the production manufacturing cost on the basis of reducing the production scrap rate.

Description

Technical Field

[0001] The present invention belongs to the technical field of battery assembly auxiliary devices, and particularly relates to a structure for preventing battery reverse polarity assembly. Background Art

[0002] In recent years, with the rapid development of new energy technologies, the application fields of lead-acid batteries have been continuously expanding, and the demand has increased significantly.

[0003] During the production and manufacturing process, as Figure 1 and Figure 2 shown, the inner pole columns of the cross-bridges of a single battery cluster are symmetrically structured in the diagonal or center line direction. When assembling the battery clusters, it is necessary to rotate a single cluster by 180° inside the battery case to reverse the positive and negative pole columns, so as to achieve the series assembly of multiple battery clusters inside the battery case. The current problem is that there are two busbars in each battery cluster. One busbar is responsible for connecting multiple positive plates, and the other busbar is responsible for connecting multiple negative plates. Since the two busbars are very similar, the only difference is that the positive busbar is slightly shorter in design. It is difficult to identify during assembly, which easily causes reverse polarity in single-cell welding and then leads to the scrapping of the power supply after short-term use, not only wasting costs but also affecting the market reputation.

[0004] The applicant of the present invention has designed various tooling fixtures for preventing reverse electrode installation, but such fixtures can only perform anti-reverse installation inspection on the busbars in the existing welding technology, and it is impossible to eliminate this hidden danger fundamentally. Summary of the Invention

[0005] In view of the above-mentioned disadvantages of the prior art, the purpose of the present invention is to provide a structure for preventing battery reverse polarity assembly, and its design purpose is to fundamentally solve the problem of high scrapping rate caused by reverse installation of a single battery cluster in the prior art and completely eliminate this hidden danger.

[0006] The technical solution adopted by the present invention to solve its technical problems is:

[0007] A structure for preventing battery reverse polarity assembly, which includes a cover body matching the battery case. Docking grooves are provided around the cover body to realize the insertion connection with the top edge of the battery case. A support partition corresponding to the middle partition of the battery case is provided inside the cover body, and docking grooves are provided on the support partition to realize the insertion connection with the middle partition.

[0008] Inside the battery case, there are multiple battery clusters. Each battery cluster is provided with a positive bus bar and a negative bus bar. When multiple battery clusters are connected in series, they are connected in series by connecting the positive bus bar and the negative bus bar at the head and tail of adjacent battery clusters; each positive bus bar and negative bus bar are provided with extension segments, and electrode posts or cross-bridge inner electrode posts are arranged on the extension segments; the extension segments on the two bus bars inside each battery cluster are designed with unequal lengths; after the battery clusters are assembled and connected inside the battery case, the dimension A from the front-row cross-bridge inner electrode post to the center of the battery cluster and the dimension B from the rear-row cross-bridge inner electrode post to the center of the battery cluster are not equal;

[0009] The support partition is provided with a central sunken hole, and the design position of the central sunken hole matches the setting position of the cross-bridge inner electrode post inside the battery case;

[0010] On the inner side surface of the cover body, there are electrode docking holes, and the electrode docking holes correspond to and match the positive electrode posts and negative electrode posts inside the battery case.

[0011] The cover body is made of ABS material or polycarbonate material, and the inner electrode post is correspondingly eccentrically adjusted.

[0012] On the left and right sides of the cover body, there are cover-lifting handles.

[0013] Preferably, the difference between dimension A and dimension B is 10 - 15 mm.

[0014] The present invention has the following beneficial effects: Through the above design, the present invention designs the dimension A from the front-row cross-bridge inner electrode post to the center of the battery cluster and the dimension B from the rear-row cross-bridge inner electrode post to the center of the battery cluster to be not equal, and correspondingly makes the electrode docking holes and the central sunken holes inside the cover body correspond; through the above design, the cover body with anti-reverse buckling design corresponds to and matches the cross-bridge inner electrode post inside the battery case. This solution is applicable to storage batteries with an even or odd number (≥3) of battery clusters. After adopting this solution, without adding any components, the occurrence of single-cell reverse polarity and cover body assembly reverse polarity is completely solved, and it does not affect the aesthetics and service performance, and reduces the production manufacturing cost on the basis of reducing the production scrap rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the drawings and embodiments.

[0016] Figure 1 is the three-dimensional split structure schematic diagram of the present invention;

[0017] Figure 2 is the top view structure schematic diagram I of the assembly of the clusters and bus bars inside the battery case;

[0018] Figure 3 is the inner side surface structure schematic diagram I of the cover body;

[0019] Figure 4 Schematic diagram of the outer side structure of the cover body;

[0020] Figure 5 Schematic diagram II of the top view structure of the assembly of the clusters and busbars inside the battery case;

[0021] Figure 6 Schematic diagram II of the inner side structure of the cover body;

[0022] In the figure, 1 is the battery case, 2 is the cover body, 3 is the battery cluster, 31 is the negative busbar, 32 is the positive busbar, 4 is the negative terminal, 5 is the positive terminal, 6 is the electrode docking hole, 7 is the cover-lifting handle, 8 is the middle sunken hole, 9 is the docking groove, 10 is the support partition, 11 is the cross-bridge inner terminal, 12 is the side plate, 13 is the middle partition, and 14 is the extension section. Detailed implementation mode

[0023] The present invention will be further described through the implementation mode as follows.

[0024] A structure for preventing battery reverse polarity assembly, as Figure 1 shown, multiple groups of battery clusters 3 are arranged inside the battery case 1, and each group of battery clusters 3 is separated by the middle partition 13. The periphery of the cover body 2 is provided with a docking groove 9 to realize the insertion connection with the top edge of the battery case 1; inside the cover body 2, a support partition 10 is provided corresponding to the middle partition 13 of the battery case 1, and the support partition 10 is provided with a docking groove 9 to realize the insertion connection with the middle partition 13; the cover body 2 is made of ABS material or polycarbonate material, and the cover-lifting handles 7 are arranged on the left and right sides of the cover body 2 to facilitate the lifting during the battery forming assembly and after the assembly.

[0025] The key point of the present invention is that multiple battery clusters 3 are arranged inside the battery case 1, and each battery cluster 3 is provided with a positive busbar 32 and a negative busbar 31. When multiple battery clusters 3 are connected in series, the positive busbar 32 and the negative busbar 31 on adjacent battery clusters are connected end to end through the cross-bridge inner terminal 11 to realize the series connection; each positive busbar 32 and negative busbar 31 is provided with an extension section 14, and the extension section 14 is provided with an electrode post or a cross-bridge inner terminal 11; the extension sections 14 on the two busbars inside each battery cluster 3 are designed with unequal lengths. As Figure 3 shown, after the battery clusters 3 are assembled and connected inside the battery case 1, the dimension A from the cross-bridge inner terminal 11 in the front row to the center of the battery cluster and the dimension B from the cross-bridge inner terminal in the rear row to the center of the battery cluster 3 are not equal.

[0026] Furthermore, the support partition 10 is provided with a middle sunken hole 8, and the design position of the middle sunken hole 8 matches the setting position of the cross-bridge inner terminal 11 inside the battery case.

[0027] Meanwhile, an electrode docking hole 6 is provided on the inner side surface of the cover body 2, and the electrode docking hole 6 corresponds to and matches the positive electrode post 5 and the negative electrode post 4 inside the battery case.

[0028] As Figure 2 and Figure 3 shown, in this solution, six even-numbered battery clusters 3 are arranged inside a single battery case 1. The dimension A from the inner pole post of the front-row cross bridge to the center of the battery cluster and the dimension B from the inner pole post of the rear-row cross bridge to the center of the battery cluster are designed to be unequal, and the difference between the dimension A and the dimension B is 10 mm. At this time, the negative electrode post 4 and the positive electrode post 5 are designed on one side. Through the asymmetric design, when installing the battery cluster 3, if the positive bus bar 32 and the negative bus bar 31 are connected in the same-pole connection during connection, the inner pole posts 11 at the docking place will be of different lengths and cannot be aligned for welding, thereby realizing the anti-fooling assembly design during the series connection of the battery cluster 3.

[0029] As Figure 5 and Figure 6 shown, in this solution, five even-numbered battery clusters 3 are arranged inside a single battery case 1. The dimension A from the inner pole post of the front-row cross bridge to the center of the battery cluster and the dimension B from the inner pole post of the rear-row cross bridge to the center of the battery cluster are designed to be unequal, and the difference between the dimension A and the dimension B is 10 mm. At this time, the negative electrode post 4 and the positive electrode post 5 are arranged oppositely. Through the asymmetric design, when installing the battery cluster 3, if the positive bus bar 32 and the negative bus bar 31 are connected in the same-pole connection during connection, the inner pole posts 11 at the docking place will be of different lengths and cannot be aligned for welding.

[0030] After multiple actual verifications, the range of the difference between the dimension A and the dimension B being 10 - 15 mm is the best state, which can not only achieve a relatively obvious warning effect, but also will not increase the cost of the lead material bus bar.

[0031] Summary: Through the above design, the cover body with the anti-reverse buckling design corresponds to and matches the inner pole posts inside the battery case. This solution is applicable to storage batteries with an even or odd number (≥3) of battery clusters. After adopting this solution, the occurrence of single-cell reverse polarity and cover body assembly reverse polarity is completely solved without adding any components, and it does not affect the aesthetics and service performance, reducing the production manufacturing cost on the basis of reducing the production scrap rate.

Claims

1. A structure for preventing battery reverse polarity assembly, which includes a cover body matching the battery case. Docking grooves are provided around the cover body to achieve insertion with the top edge of the battery case; a support partition corresponding to the middle partition of the battery case is provided inside the cover body, and docking grooves are provided on the support partition to achieve insertion with the middle partition; It is characterized in that: A plurality of battery clusters are arranged inside the battery shell, each of which is provided with a positive bus and a negative bus. When the plurality of battery clusters are connected in series, the positive bus and the negative bus on the adjacent battery clusters are connected end to end to achieve series connection; each positive bus and negative bus are provided with an extension section, and an electrode column or a bridge inner electrode column is provided on the extension section; the extension sections on the two buses inside each battery cluster are designed with unequal lengths; After the battery cluster is assembled and connected inside the battery shell, the dimension A from the inner pole of the front span bridge to the center of the battery cluster is not equal to the dimension B from the inner pole of the rear span bridge to the center of the battery cluster; a middle countersunk hole is provided on the support partition, and the design position of the middle countersunk hole matches the setting position of the inner pole of the span bridge in the battery shell; An electrode docking hole is arranged on the inner side of the cover body, and the electrode docking hole corresponds to the positive electrode column and the negative electrode column inside the battery shell; the cover body is made of ABS material or polycarbonate material; the left and right sides of the cover body are provided with a lid opening handle; the difference between size A and size B is 10 to 15 mm.

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