Cylindrical battery pack distributed glue filling device
Patent Information
- Application Number
- CN202522267469.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-27
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2035-10-27
AI Technical Summary
人工灌胶的方式具有以下技术缺点：（1）因液冷板所处位置，电芯与电芯间胶水受液冷板阻挡，造成胶水流动效果差乃至造成胶水流平高度一致性差，即电芯与箱体间高度大于电芯与电芯间高度；可能存在中间部位胶粘强度不满足造成产品失效
1、呈三角状的灌胶漏斗适配电芯与电芯间距，可深入电芯与电芯中间，并且深入长度低于液冷板上表面，无接触电芯和液冷板表面，减少灌胶残留，提升胶水利用率。
Smart Images
Figure CN224778415U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a potting device, and more particularly to a distributed potting device for cylindrical battery packs. Background Technology
[0002] Large cylindrical power battery packs are liquid-cooled on one or both sides, and serpentine liquid cooling plates are used between the cells. After the battery modules are put into the pack box, structural adhesive or foaming adhesive is used to fill the battery pack. During trial production, according to the planned points, manual glue filling is performed on the battery pack using a measuring cup. The manual glue filling method has the following technical disadvantages: (1) Due to the position of the liquid cooling plate, the glue between the cells is blocked by the liquid cooling plate, resulting in poor glue flow effect and even poor glue leveling height consistency, that is, the height between the cell and the box is greater than the height between the cells; the adhesive strength in the middle part may not be sufficient, causing product failure. (2) Due to the operation method, the glue between the cells is blocked by the liquid cooling plate and the glue remains on the liquid cooling plate or the cell, resulting in glue waste. (3) When filling with foaming adhesive, for large-sized pack products, due to the short foaming time, when filling one side, the other side has already foamed, resulting in poor foaming. Utility Model Content
[0003] In order to overcome the shortcomings of the existing technology, this utility model provides a distributed potting device for cylindrical battery PACK.
[0004] To achieve the above objectives, this utility model discloses a distributed potting device for a cylindrical battery pack, comprising: A glue-filling funnel, which is divided into a flange, a guide, and a glue-filling section in the height direction. The guide section tapers from one end near the flange to one end near the glue-filling section. The glue-filling funnel is in a through-type shape. A fixing plate is provided, and the array of glue-filling funnels is distributed and connected to the fixing plate. One side of the fixing plate is provided with positioning holes that cooperate with the battery cell terminals.
[0005] Preferably, a glue-filling groove is provided on one side of the fixing plate, and the glue-filling funnels are distributed in a linear array in the glue-filling groove.
[0006] Preferably, the glue dispensing tank is designed as a single tank.
[0007] Preferably, the glue dispensing tank is designed to have at least two tanks, and the at least two glue dispensing tanks are arranged in parallel.
[0008] Preferably, a positioning groove that mates with the guide portion is provided at the bottom of the glue dispensing tank.
[0009] Preferably, the cross-sections of both the guide portion and the glue-filling portion are triangular, the cross-sectional area of the guide portion gradually decreases in the height direction, and the cross-sectional area of the glue-filling portion remains unchanged in the height direction.
[0010] Preferably, the apex positions of the guide portion and the glue-filling portion are both arc-shaped.
[0011] Preferably, the flange portion is fitted to the bottom surface of the glue-filling groove, and the free end of the glue-filling portion passes through the other side of the positioning groove and protrudes from the surface of the fixing plate.
[0012] This utility model has the following technical effects: 1. The triangular-shaped potting funnel is adapted to the spacing between battery cells, can penetrate deep into the middle of the battery cells, and the penetration length is lower than the upper surface of the liquid cooling plate, without contacting the surface of the battery cells and the liquid cooling plate, reducing potting residue and improving glue utilization.
[0013] 2. A dispensing tank connects to several point-filling funnels, which are evenly distributed at the corresponding positions of the liquid-cooled cylindrical power battery PACK to ensure uniform dispensing. Dispensing only requires filling the flow channel, greatly improving dispensing efficiency. Attached Figure Description
[0014] Figure 1 This is a structural schematic diagram of side A of the present invention; Figure 2 This is a structural schematic diagram of side B of the present invention; Figure 3 This is a schematic diagram of the structure of the fixing plate in this utility model; Figure 4 This is a schematic diagram of the glue-pouring funnel in this utility model; Figure 5 This is a top view of the glue-pouring funnel in this utility model.
[0015] In the diagram, 100. Glue-pouring funnel; 101. Flange; 102. Guide section; 103. Glue-pouring section; 200. Fixing plate; 201. Positioning hole; 202. Glue potting tank; 203. Positioning groove; Detailed Implementation
[0016] The principles and features of this utility model are described below with reference to the embodiments; the examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.
[0017] A distributed potting device for a cylindrical battery pack includes a potting funnel 100 and a fixing plate 200.
[0018] The mounting plate 200 is a thin plate, which can be adapted to the size of the cylindrical battery pack. For ease of description, please refer to the appendix. Figure 1 Or attached Figure 2 A plane of the fixing plate 200 is defined as surface A, and another plane of the fixing plate 200 is defined as surface B, wherein surface A and surface B are parallel. A potting groove 202 is provided on surface A of the fixing plate 200. The potting groove 202 is a rectangular groove. There can be one potting groove 202 or multiple parallel grooves. For example, this embodiment has three grooves, corresponding to four rows of cells in the cylindrical battery pack. Positioning holes 201 are provided on surface B of the fixing plate 200, located on both sides of the potting groove 202. During potting, the positioning holes 201 cooperate with the terminals of the cylindrical cells to position the fixing plate 200.
[0019] The glue-filling funnel 100 is divided into a flange portion 101, a guide portion 102, and a glue-filling portion 103 in the height direction, and the flange portion 101, guide portion 102, and glue-filling portion 103 are integrally formed. Figure 4 As shown, the flange 101 is located on the top surface of the guide portion 102 in the height direction, and the glue-filling portion 103 is located on the bottom surface of the guide portion 102 in the height direction. Both the guide portion 102 and the glue-filling portion 103 are triangular, and their apexes are rounded. This design allows the glue-filling funnel 100 to retain less glue. The cross-sectional area of the guide portion 102 gradually decreases from top to bottom, forming a funnel shape; the cross-sectional area of the glue-filling portion 103 remains constant from top to bottom. The flange 101 extends along the outer contour of the guide portion 102.
[0020] Positioning grooves 203 are arranged in an array along the length of the bottom of the glue-filling tank 202. The glue-filling funnel 100 is fixedly connected to the positioning grooves 203. In this solution, the fixing method between the glue-filling funnel 100 and the fixing plate 200 is not limited; they can be fixedly connected to the fixing plate 200 by pasting or snapping. The outline shape of the positioning groove 203 is the same as that of the guide part 102, that is, it is triangular. The apex of the positioning groove 203 is also arc-shaped. When the glue-filling funnel 100 is installed on the fixing plate 200, the glue-filling part 103 of the glue-filling funnel 202 passes through the positioning groove 203 and protrudes from the surface of the fixing plate 200, while the edge part 101 overlaps the bottom surface of the glue-filling tank 202.
[0021] The triangular glue-dredging funnel 100 is sized to fit the spacing between battery cells, allowing it to penetrate deep into the cells and prevent glue residue from remaining on the cells and liquid cooling plate walls during the glue-dredging process, thus enabling precise control of the glue amount.
[0022] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A distributed potting device for a cylindrical battery pack, characterized in that, include: A glue-filling funnel (100) is divided into a flange (101), a guide (102), and a glue-filling part (103) in the height direction. The guide (102) tapers from one end near the flange (101) to one end near the glue-filling part (103). The glue-filling funnel (100) is in a through-hole shape. A fixing plate (200) is provided, and the glue funnels (100) are arrayed and connected to the fixing plate (200). One side of the fixing plate (200) is provided with positioning holes (201) that cooperate with the battery cell terminals.
2. The distributed potting apparatus for cylindrical battery PACK according to claim 1, characterized in that, A glue-filling groove (202) is provided on one side of the fixed plate (200), and the glue-filling funnels (100) are arranged in a linear array in the glue-filling groove (202).
3. The distributed potting apparatus for cylindrical battery PACK according to claim 2, characterized in that, The glue dispensing tank (202) is designed as a single tank.
4. The distributed potting apparatus for cylindrical battery PACK according to claim 2, characterized in that, The glue dispensing tank (202) is designed to be at least two, and the at least two glue dispensing tanks (202) are arranged in parallel.
5. The distributed potting apparatus for cylindrical battery PACK according to any one of claims 2 to 4, characterized in that, A positioning groove (203) that cooperates with the guide part (102) is provided at the bottom of the glue dispensing tank (202).
6. The distributed potting apparatus for cylindrical battery PACK according to claim 5, characterized in that, Both the guide portion (102) and the glue-filling portion (103) have triangular cross-sections. The cross-sectional area of the guide portion (102) gradually decreases in the height direction, while the cross-sectional area of the glue-filling portion (103) remains unchanged in the height direction.
7. The distributed potting apparatus for cylindrical battery PACK according to claim 6, characterized in that, The apex positions of the guide part (102) and the glue-filling part (103) are both arc-shaped.
8. The distributed potting apparatus for cylindrical battery PACK according to claim 7, characterized in that, The flange (101) is attached to the bottom surface of the glue-filling groove (202), and the free end of the glue-filling part (103) passes through the other side of the positioning groove (203) and protrudes from the surface of the fixing plate (200).