Lithium ion battery module laser welding protection tool
By designing a protective tooling for laser welding of lithium-ion battery modules, the problems of short circuit and fire during module welding are solved, ensuring the safety and stability of equipment operation, and reducing safety risks.
Patent Information
- Application Number
- CN202411722899.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-01-21
AI Technical Summary
During the laser welding of lithium-ion battery modules, due to limited space and misalignment of module positions, the module is easily short-circuited and fired, affecting the operation of the equipment and increasing economic losses.
A lithium -ion battery module laser welding protective dress is designed, including the bottom plate, vertical board, regulating board component, and pressure leakage tube. By adjusting the positioning and fixing of the component of the board, the consistency of the welding position of the module is ensured. Tube avoids rising internal pressure of work.
Effectively avoid the risk of fire during welding, ensure the safety and stability of the equipment operation, reduce the safety risks in the production process, and simplify the module replacement and processing process.
Smart Images
Figure CN119328342A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of lithium battery production and processing, and specifically relates to a lithium ion battery module laser welding protective tooling. Background Art
[0002] As a new type of green and environmentally friendly energy storage battery, lithium-ion batteries have the advantages of high energy density, long cycle life, and relatively low price, but their safety is slightly poor. There is a certain risk of explosion and fire under high temperature, overcharge, short circuit, etc., and the reaction time is very short, which can develop from smoke to explosion within one minute. Lithium batteries are generally assembled into modules from multiple single cells, and then used in conjunction with the BMS battery management system.
[0003] During production, it was found that the space for stacking battery modules is limited, and the distance between the copper bars on the module PCB is small. During the laser welding process, the pressure foot of the laser welding machine may press on the two copper bars due to the deviation of the module position, causing the module to short-circuit and catch fire. The module is directly placed on the equipment tray, which weighs 30KG and is controlled by the equipment. If there is a problem in the module production process, it may affect the internal circuit of the equipment and cause a malfunction. The tray cannot be directly withdrawn, and the problematic module cannot be directly removed manually, which will eventually cause greater economic and property losses.
[0004] Therefore, how to provide a lithium-ion battery module laser welding protective tooling is a problem that technical personnel in this field urgently need to solve. Summary of the invention
[0005] In view of this, the present invention provides a lithium-ion battery module laser welding protective tooling to prevent fire from occurring during module welding and thus affecting the operation of the entire device.
[0006] In order to achieve the above object, the present invention adopts the following technical solution: a lithium-ion battery module laser welding protective tooling, comprising:
[0007] A bottom plate, wherein a plurality of first-direction adjustment slots and a plurality of second-direction adjustment slots are provided on the bottom plate;
[0008] A vertical plate, wherein the vertical plates are multiple and are detachably fixed to the peripheral side of the bottom plate to form a box structure, the top of the box body is openably connected to a box cover, a vertical plate corresponding to one side of the box body structure is connected and communicated with a pressure relief pipe, and a vertical plate corresponding to the other side of the box body structure is provided with a position avoidance port, the first-direction adjustment slot corresponds to the radial arrangement of the pressure relief pipe, and the second-direction adjustment slot corresponds to the axial arrangement of the pressure relief pipe;
[0009] An adjustment plate assembly is located inside the box and is used to position the battery module to be processed. The end of the battery module to be welded extends out of the avoidance opening. The adjustment plate assembly is fixedly connected to the first-direction adjustment slot and the second-direction adjustment slot by screws respectively. The adjustment plate assembly is used to fix a conventional integral battery module or a special-shaped battery module.
[0010] The beneficial effects of the present invention are as follows: the protective tooling provided can be used to fix the battery module with clamps, and the tooling can be directly placed on the tray of the laser welding machine, and then sent into the equipment for parameter point-to-point debugging. After the debugging is completed, the same model module can be produced later by simply opening the box cover to replace the module, without changing the position of the adjustment plate assembly, thereby ensuring the consistency of the module welding position. When another batch of special-shaped modules is processed, only the initial adjustment plate assembly position needs to be adjusted, and no large-scale changes are required later. If an abnormality occurs in the module during the production process, the tooling can be directly removed manually for fire extinguishing, which does not affect the subsequent equipment operation, greatly improving the safety of the production process and reducing safety risks.
[0011] Preferably, handles are connected to the outer sides of the vertical plates at both ends of the corresponding box structure, and there are two groups of first-direction adjustment slots, which are respectively opened at positions near the two ends of the bottom plate, and the second-direction adjustment slots are opened at positions near one end of the pressure relief pipe on the bottom plate, and both the first-direction adjustment slots and the second-direction adjustment slots are long slots and are used to connect the adjustment plate assembly.
[0012] The resulting technical effect is: the handle helps to quickly remove the tooling after a problem occurs during the module welding process. There are two groups of first-direction adjustment slots, and the purpose is to cooperate with the adjustment plate assembly to be fixed on both sides of the battery module. It can be understood that one group of first-direction adjustment slots is used to adjust the adjustment plate assembly on one side of the battery module, and the other group of first-direction adjustment slots is used to adjust the adjustment plate assembly on the other side of the battery module. Of course, there can be two or four adjustment slots in a group, which is specifically determined according to the number of adjustment plate assemblies. The second-direction adjustment slots cooperate with the adjustment plate assembly to be fixed at the rear end of the battery module, thereby achieving position fixation of the battery module in the tooling.
[0013] Preferably, the adjustment plate assembly includes a first-direction adjustable positioning plate group and a second-direction adjustable positioning plate group, the first-direction adjustable positioning plate group includes multiple first-direction adjustable positioning plates, the multiple first-direction adjustable positioning plates are grouped in pairs and distributed on both sides of the battery module, and the multiple first-direction adjustable positioning plates are independently connected to the multiple first-direction adjustment slots by screws; the second-direction adjustable positioning plate group includes multiple second-direction adjustable positioning plates, and the multiple second-direction adjustable positioning plates are independently connected to the multiple second-direction adjustment slots by screws.
[0014] The resulting technical effect is: in specific implementation, the first-direction adjustable positioning plate is used to clamp and position on both sides of the battery module, and the second-direction adjustable positioning plate is used to position at the rear end of the battery module. It should be noted that the first-direction adjustable positioning plate and the second-direction adjustable positioning block are adjusted independently and do not affect each other, thereby achieving the fixation of special-shaped battery modules.
[0015] Preferably, the first-direction adjustable positioning plate and the second-direction adjustable positioning plate are both upright trapezoidal plates.
[0016] The resulting technical effect is: in specific implementation, four adjustable positioning plates are arranged in the first direction, and two adjustable positioning plates are arranged in the second direction. The adjustment is independent, which can be suitable for clamping and fixing special-shaped battery modules. The trapezoidal positioning plate is placed on its side during installation, that is, with the inclined surface facing upward, to facilitate the battery module to enter the tooling.
[0017] Preferably, the box cover is connected to a plurality of buckles, and the outer sides of the vertical plates at both ends of the corresponding box structure are connected to a plurality of locking structures that match the buckles.
[0018] The resulting technical effect is that the box cover is connected via the buckle on the box cover and the locking structure on the box body. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is an overall structural diagram of a lithium-ion battery module laser welding protective tooling of the present invention;
[0020] Figure 2 This is a diagram of the internal structure of a lithium-ion battery module laser welding protective tooling of the present invention;
[0021] Figure 3 A top view of the internal structure of a lithium-ion battery module laser welding protective tooling of the present invention;
[0022] Figure 4 The figure is a bottom side schematic diagram of a lithium-ion battery module laser welding protective tooling according to the present invention.
[0023] 1 bottom plate, 2 vertical plate, 3 box cover, 4 pressure relief pipe, 5 avoidance port, 6 first direction adjustment slot hole, 7 second direction adjustment slot hole, 8 adjustment plate assembly, 81 first direction adjustable positioning plate, 82 second direction adjustable positioning plate, 9 handle, 10 buckle, 11 battery module. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0025] See the attached Figures 1 to 4 According to an embodiment of the present invention, a lithium-ion battery module laser welding protective tooling includes:
[0026] A bottom plate 1, on which a plurality of first-direction adjustment slots 6 and a plurality of second-direction adjustment slots 7 are provided; the number of the first-direction adjustment slots is twice the number of the second-direction adjustment slots;
[0027] There are four vertical plates 2, which are disassembled and fixed on the surrounding side of the bottom plate 1 to form a box structure. The four vertical plates include a front vertical plate, a rear vertical plate and two side vertical plates. The top of the box structure is opened and closed to connect with a box cover 3. The vertical plate 2 (rear vertical plate) at one side of the box structure is connected and connected with a pressure relief pipe 4. Due to the welding of the lithium-ion battery module, the module short circuit often occurs. In this case, the battery module will heat up and generate heat, releasing a large amount of gas. The pressure relief pipe is used to avoid the internal pressure of the tooling from increasing. Accidental explosion, a position avoidance opening 5 is provided on the vertical plate 2 (front vertical plate) at the other side end of the corresponding box structure. It should be noted that the front vertical plate can be adaptively disassembled and replaced according to the processing conditions of different types of battery modules to ensure that the end of the battery module to be welded can extend out of the position avoidance opening 5 of the front vertical plate. The first-direction adjustment slot 6 corresponds to the radial arrangement of the pressure relief pipe 4, and adjusts the positioning and clamping of the battery module in the width direction. The second-direction adjustment slot 7 corresponds to the axial arrangement of the pressure relief pipe 4, and adjusts the positioning of the battery module in the length direction.
[0028] The adjustment plate assembly 8 is located inside the box and is used to position the battery module 11 to be processed. It should be noted that the battery module is not a conventional full-shaped module when used, but can also be a special-shaped module of other types to adapt to different processing objects. The end of the battery module 11 to be welded extends out of the avoidance opening 5, and the adjustment plate assembly 8 is fixedly connected to the first adjustment slot 6 and the second adjustment slot 7 by screws respectively. After it is arranged in place, the screws can be tightened. The adjustment plate assembly 8 is used to fix conventional full-shaped battery modules or special-shaped battery modules.
[0029] In some other embodiments, handles 9 are connected to the outer sides of the vertical plates at both ends of the corresponding box structure to facilitate the staff to take and put. There are two groups of first-direction adjustment slots 6, and the two groups of first-direction adjustment slots 6 are respectively opened at positions close to both ends of the bottom plate 1. In specific implementation, there are at least 4 first-direction adjustment slots in each group, and the second-direction adjustment slots 7 are opened at a position on one side of the bottom plate 1 close to the pressure relief pipe 4. Both the first-direction adjustment slots 6 and the second-direction adjustment slots 7 are long slots and are used to connect the adjustment plate assembly 8.
[0030] In other embodiments, the adjustment plate assembly 8 includes a first-direction adjustable positioning plate group and a second-direction adjustable positioning plate group, the first-direction adjustable positioning plate group includes four first-direction adjustable positioning plates 81, the four first-direction adjustable positioning plates 81 are grouped in pairs and distributed on both sides of the battery module 11, and the four first-direction adjustable positioning plates 81 are independently connected to the eight first-direction adjustment slots 6 by screws; the second-direction adjustable positioning plate group includes two second-direction adjustable positioning plates 82, and the two second-direction adjustable positioning plates 82 are respectively connected to the four second-direction adjustment slots 7 by screws.
[0031] In some other embodiments, the first direction adjustable positioning plate 81 and the second direction adjustable positioning plate 82 are both upright trapezoidal plates with the inclined surface facing upwards, so as to facilitate the introduction of the battery module.
[0032] Specifically, four buckles 10 are connected to the box cover 3, and four locking structures matching the buckles are connected to the outer sides of the vertical plates at both ends of the corresponding box structure, which is convenient for disassembly.
[0033] How to use: manually place the module to be welded inside the tooling, and position it with the adjustment plate assembly, adjust the position of the first-direction adjustable positioning plate and the second-direction adjustable positioning plate according to the size of the module, lock the fixing screws on the positioning plate, then cover the upper cover, fasten the buckle, place the tooling on the tray of the laser welding machine, send it into the equipment for parameter point debugging, and after the debugging is completed, when the same model module is produced later, you only need to open the box cover, loosen the first-direction adjustable positioning plate screw on one side, and replace the module without changing the positioning plate position to ensure the consistency of the module welding position. If the module is abnormal during the production process, the manual can directly take out the tooling by the handle, and put the tooling and the module into the sandbox next to it for further processing.
[0034] The present invention is simple and convenient to use. The module is placed separately in a closed tooling for production. When an abnormality occurs during the module production process, the tooling is directly and quickly removed to process the module, which greatly improves the safety of the production process, reduces safety risks, and does not affect the subsequent processes.
[0035] As for the device and the method of use disclosed in the embodiment, since they correspond to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the method part.
[0036] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A lithium-ion battery module laser welding protective tooling, characterized in that: include: A bottom plate (1), wherein the bottom plate (1) is provided with a plurality of first-direction adjustment slot holes (6) and a plurality of second-direction adjustment slot holes (7); A vertical plate (2), wherein the vertical plates (2) are composed of a plurality of pieces and are detachably fixed to the peripheral side of the bottom plate (1) to form a box structure, the top of the box structure is openably connected to a box cover (3), a pressure relief pipe (4) is connected and communicated with the vertical plate (2) corresponding to one side of the box structure, and a position avoidance port (5) is provided on the vertical plate (2) corresponding to the other side of the box structure, the first-direction adjustment slot (6) corresponds to the radial arrangement of the pressure relief pipe (4), and the second-direction adjustment slot (7) corresponds to the axial arrangement of the pressure relief pipe (4); An adjustment plate assembly (8), the adjustment plate assembly (8) is located inside the box and is used to position the battery module (11) to be processed, the end of the battery module (11) to be welded extends out of the avoidance opening (5), the adjustment plate assembly (8) is respectively fixedly connected to the first-direction adjustment slot hole (6) and the second-direction adjustment slot hole (7) by screws, and the adjustment plate assembly (8) is used to fix a conventional integral battery module or a special-shaped battery module.
2. A lithium-ion battery module laser welding protective tooling according to claim 1, characterized in that: Handles (9) are connected to the outer sides of the vertical plates at both ends of the corresponding box structure. There are two groups of first-direction adjustment slots (6), and the two groups of first-direction adjustment slots (6) are respectively opened at positions near the two ends of the bottom plate (1). The second-direction adjustment slot (7) is opened at a position near one side end of the bottom plate (1) near the pressure relief pipe (4). Both the first-direction adjustment slot (6) and the second-direction adjustment slot (7) are long slots and are used to connect the adjustment plate assembly (8).
3. A lithium-ion battery module laser welding protective tooling according to claim 2, characterized in that: The adjustment plate assembly (8) comprises a first-direction adjustable positioning plate group and a second-direction adjustable positioning plate group, the first-direction adjustable positioning plate group comprises a plurality of first-direction adjustable positioning plates (81), the plurality of first-direction adjustable positioning plates (81) are arranged in groups of two and are distributed on both sides of the battery module (11), the plurality of first-direction adjustable positioning plates (81) are independently connected to the plurality of first-direction adjustment slot holes (6) by screws; the second-direction adjustable positioning plate group comprises a plurality of second-direction adjustable positioning plates (82), the plurality of second-direction adjustable positioning plates (82) are independently connected to the plurality of second-direction adjustment slot holes (7) by screws.
4. A lithium-ion battery module laser welding protective tooling according to claim 3, characterized in that: The first-direction adjustable positioning plate (81) and the second-direction adjustable positioning plate (82) are both upright trapezoidal plates.
5. The lithium-ion battery module laser welding protective tooling according to claim 1, characterized in that: The box cover (3) is connected to a plurality of buckles (10), and the outer sides of the vertical plates at the two ends of the corresponding box structure are connected to a plurality of locking structures that match the buckles.