A new energy vehicle battery bottom guard plate PVC spraying device
By combining an electric slider and an electric telescopic rod with a spray plate design, along with a perforated spray plate and a paint recycling system, the accuracy and uniformity issues of traditional spraying equipment on the bottom guard plate of new energy vehicle batteries are solved, achieving a highly efficient and environmentally friendly spraying effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN JUHUILIAN TECH CO LTD
- Filing Date
- 2025-06-18
- Publication Date
- 2026-05-29
AI Technical Summary
Traditional spraying equipment for new energy vehicle battery underbody protection plates suffers from problems such as difficulty in accurately controlling the spraying position and height, uneven coating thickness, low spraying efficiency, easy occurrence of spraying dead corners, and paint waste. It is difficult to meet diverse design requirements and pollutes the environment.
The system employs an electric slider and an electric telescopic rod in conjunction with a spraying plate to achieve flexible adjustment of the spraying position and height. Combined with a perforated spraying plate and a pump system, it enables uniform spraying and paint recycling, forming a closed-loop recycling system.
It achieves precision and uniformity in spraying, reduces production costs, improves spraying efficiency and resource utilization, and reduces environmental pollution.
Smart Images

Figure CN224293634U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of new energy vehicle battery bottom protection plate processing technology, specifically a PVC spraying device for new energy vehicle battery bottom protection plate. Background Technology
[0002] A battery underbody protector for new energy vehicles is a protective plate installed under the battery, primarily used to protect the battery from external environmental corrosion and damage. Currently, to provide comprehensive protection for the battery underbody protector, extend battery life, reduce production costs, and comply with environmental protection principles, a PVC coating is typically used. PVC (polyvinyl chloride) material has good wear resistance, corrosion resistance, and water resistance, effectively preventing the battery underbody protector from external environmental corrosion, thereby extending the battery's lifespan.
[0003] According to the authorized patent "CN222197439U", a PVC spraying device for the bottom cover plate of a new energy vehicle battery includes: a clamping mechanism installed on the top of a T-shaped bracket for clamping the bottom cover plate, with support blocks fixedly connected to the top of each T-shaped bracket; a rotating mechanism disposed on one of the support blocks for quickly flipping the bottom cover plate on the clamping mechanism; and a support mechanism connected to the U-shaped clamping rod for supporting the bottom cover plate and preventing it from concave. This utility model utilizes the cooperation of the telescopic support rod, bottom cover plate, clamping mechanism, and rotating mechanism to quickly flip and clamp the bottom cover plate of the new energy vehicle battery, which not only speeds up the spraying process and avoids wear or scratches caused by flipping, but also shortens production time, improves production efficiency, makes the construction process more convenient, reduces construction difficulty, and saves labor costs.
[0004] The above-mentioned technical solutions suffer from several drawbacks. Traditional spraying equipment often employs manual or semi-automatic spraying methods, which result in problems such as difficulty in accurately controlling the spraying position and height, uneven coating thickness, and low spraying efficiency. For example, manual spraying relies on the operator's experience, making it difficult to ensure consistent spraying quality across different batches of products, and it is prone to creating spraying dead corners on complex-shaped underbody plates. While semi-automatic equipment can achieve partial automation, its mechanical structure limits its flexibility in adjusting the spraying angle and height, failing to meet the diverse design requirements of underbody plates for new energy vehicle batteries. Furthermore, during traditional spraying, a large amount of unadhered paint drips and is wasted, increasing production costs and polluting the environment, which contradicts the concept of green manufacturing.
[0005] Therefore, this utility model provides a PVC spraying device for the bottom guard plate of a new energy vehicle battery. Utility Model Content
[0006] To address the shortcomings of existing technologies, this utility model provides a PVC spraying device for the bottom guard plate of new energy vehicle batteries, thereby solving the aforementioned problems.
[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: a PVC spraying device for the bottom guard plate of a new energy vehicle battery, including a support plate, a controller fixedly connected to the outside of the support plate, a placement frame arranged between the support plates, and a spraying mechanism arranged on the top of the support plate;
[0008] The spraying mechanism includes a gantry frame, with a slide rail fixedly connected to the inner side of the gantry frame. An electric slider is slidably connected to the outer side of the slide rail. An electric telescopic rod is fixedly connected to the bottom of the electric slider. A lifting rod is fixedly connected to the bottom of the electric telescopic rod. A spraying plate is fixedly connected to the bottom of the lifting rod. A spraying box is fixedly connected to the top of the gantry frame. A cover plate is snapped onto the top of the spraying box. A scale plate is fixedly connected to the outer side of the spraying box. A suction pump is fixedly connected to the outer side of the suction pump. A first-stage conduit is fixedly connected to the outer side of the suction pump.
[0009] Preferably, a recycling mechanism is provided below the placement frame. The recycling mechanism includes a recycling frame, a filter plate is provided on the top of the recycling frame, a second extraction pump is fixedly connected to the outside of the recycling frame, a suction pipe is fixedly connected to one end of the second extraction pump inside the recycling frame, and a second conduit is fixedly connected to the outside of the second extraction pump.
[0010] Preferably, the placement frame is located between two support plates, and the gantry frame is fixedly connected to the top of the two placement frames.
[0011] Preferably, the electric slider is electrically connected to the electric telescopic rod and the controller, the interior of the spray plate is hollow, and the inner bottom wall of the spray plate has a dense array of small holes.
[0012] Preferably, the initial position of the spray plate is located above the placement frame, and the length of the spray plate is the same as the internal width of the placement frame. The end of the first conduit away from the extraction pump is fixedly connected to the inside of the spray plate.
[0013] Preferably, the recycling frame is fixedly connected between the two support plates, and the recycling frame is located directly below the placement frame.
[0014] Preferably, the second extraction pump is electrically connected to the controller, and the suction tube is located inside the recovery frame.
[0015] Preferably, the end of the second conduit away from the second extraction pump is fixedly connected to the inside of the spray box, and a one-way valve is provided inside the second conduit.
[0016] Beneficial effects
[0017] Compared with the prior art, the present invention has the following advantages:
[0018] (1) The PVC spraying device for the bottom plate of the new energy vehicle battery has an electric slider and an electric telescopic rod controlled by a controller, which can make the spraying plate move flexibly in multiple dimensions and accurately adjust the spraying position and height. The spraying plate is hollow inside and has small holes densely distributed on the bottom wall. With the No. 1 extraction pump and the No. 1 conduit, it can achieve large-area and uniform PVC spraying, and improve the spraying efficiency and quality.
[0019] (2) The PVC spraying device for the bottom guard plate of the new energy vehicle battery has a recycling mechanism. Through the cooperation of the recycling frame, filter plate, No. 2 extraction pump, suction pipe and No. 2 conduit, the PVC material scattered during the spraying process can be recycled and filtered, and then transported back to the spraying box through the No. 2 conduit, which reduces material waste, lowers production costs, and improves resource utilization. Attached Figure Description
[0020] Figure 1 This is a perspective view of the present invention;
[0021] Figure 2 This is a side view of the structure of this utility model;
[0022] Figure 3 This is a schematic diagram of the structure between the spraying mechanism and the recycling mechanism of this utility model;
[0023] Figure 4 This is a schematic diagram of the outer structure of the recycling frame of this utility model.
[0024] In the diagram: 1. Support plate; 2. Controller; 3. Placement frame; 4. Spraying mechanism; 41. Gantry frame; 42. Slide rail; 43. Electric slider; 44. Electric telescopic rod; 45. Lifting rod; 46. Spraying plate; 47. Spraying box; 48. Cover plate; 49. Scale plate; 410. No. 1 extraction pump; 411. No. 1 conduit; 5. Recycling mechanism; 51. Recycling frame; 52. Filter plate; 53. No. 2 extraction pump; 54. Suction pipe; 55. No. 2 conduit. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0026] Please see Figure 1-4A PVC spraying device for the bottom guard plate of a new energy vehicle battery includes a support plate 1, a controller 2 fixedly connected to the outside of the support plate 1, a placement frame 3 between the support plates 1, and a spraying mechanism 4 on the top of the support plate 1.
[0027] The spraying mechanism 4 includes a gantry frame 41, a slide rail 42 fixedly connected to the inner side of the gantry frame 41, an electric slider 43 slidably connected to the outer side of the slide rail 42, an electric telescopic rod 44 fixedly connected to the bottom of the electric slider 43, a lifting rod 45 fixedly connected to the bottom of the electric telescopic rod 44, a spraying plate 46 fixedly connected to the bottom of the lifting rod 45, a spraying box 47 fixedly connected to the top of the gantry frame 41, a cover plate 48 snapped onto the top of the spraying box 47, a scale plate 49 fixedly connected to the outer side of the spraying box 47, a first extraction pump 410 fixedly connected to the outer side of the first extraction pump 410, and a first conduit 411 fixedly connected to the outer side of the first extraction pump 410.
[0028] Furthermore: the placement frame 3 is located between the two support plates 1, the gantry frame 41 is fixedly connected to the top of the two placement frames 3, the electric slider 43 is electrically connected to the electric telescopic rod 44 and the controller 2, the interior of the spray plate 46 is hollow, and the inner bottom wall of the spray plate 46 is provided with densely packed small holes. The initial position of the spray plate 46 is above the placement frame 3, and the length of the spray plate 46 is the same as the internal width of the placement frame 3. The end of the first conduit 411 away from the first extraction pump 410 is fixedly connected to the interior of the spray plate 46.
[0029] It should be noted that: as the basic frame of the device, it is used to fix components such as controller 2 and placement frame 3 to ensure the overall structural stability. It controls electrical components such as electric slider 43, electric telescopic rod 44, No. 1 extraction pump 410, and No. 2 extraction pump 53 through electrical connection to realize the automated spraying process.
[0030] Specifically: The gantry frame 41 spans above the placement frame 3, the slide rail 42 is set along the horizontal X-axis, and the electric slider 43 can slide back and forth on it, driving the spraying assembly to move laterally. By extending and retracting the electric telescopic rod 44, the vertical distance between the spraying plate 46 and the battery bottom cover plate is adjusted to adapt to workpieces of different thicknesses and ensure uniform spraying. The interior is hollow and the bottom surface is densely covered with small holes. It is connected to the first extraction pump 410 through the first conduit 411 to atomize the PVC paint in the spraying box 47 and spray it evenly. The length is consistent with the internal width of the placement frame 3 to ensure that the spraying coverage area matches the size of the workpiece and avoid paint waste.
[0031] Furthermore: the top cover plate 48 facilitates the addition of paint, the outer scale plate 49 allows for real-time observation of the paint level, and the first extraction pump 410 delivers the paint to the spray plate 46 through the first conduit 411, forming a spraying power system.
[0032] As a further improvement of this utility model, a recycling mechanism 5 is provided below the placement frame 3. The recycling mechanism 5 includes a recycling frame 51, a filter plate 52 is provided on the top of the recycling frame 51, a second extraction pump 53 is fixedly connected to the outside of the recycling frame 51, a suction tube 54 is fixedly connected to one end of the second extraction pump 53 located inside the recycling frame 51, and a second conduit 55 is fixedly connected to the outside of the second extraction pump 53.
[0033] Furthermore: the recycling box 51 is fixedly connected between the two support plates 1, and the recycling box 51 is located directly below the placement box 3. The second extraction pump 53 is electrically connected to the controller 2. The suction pipe 54 is located inside the recycling box 51. The end of the second conduit 55 away from the second extraction pump 53 is fixedly connected to the inside of the spray box 47, and a one-way valve is provided inside the second conduit 55.
[0034] It should be noted that: recycling box 51 and filter plate 52:
[0035] Located directly below the placement frame 3, it collects paint dripping during the spraying process. The filter plate 52 separates impurities from the paint, ensuring the purity of the recovered paint. The second extraction pump 53 and the second conduit 55: The second extraction pump 53 extracts the paint from the recovery frame 51 through the suction pipe 54 and transports it back to the spray box 47 through the second conduit 55, forming a closed-loop recovery system. The one-way valve in the second conduit 55 prevents paint backflow and ensures a safe and reliable circulation process.
[0036] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.
[0037] Working principle: The bottom protection plate of the new energy vehicle battery is placed in the placement frame 3 between the two support plates 1 to complete the workpiece positioning. The operator observes the scale plate 49 on the outside of the spray box 47 to know the remaining amount of PVC paint in the spray box 47. If the paint is insufficient, the top snap-fit cover plate 48 is opened to add paint to the spray box 47 to prepare for subsequent spraying operations.
[0038] The spraying mechanism 4 begins operation, and the controller 2 sends electrical signals to the electric slider 43 and the electric telescopic rod 44. The electric slider 43 slides on the slide rail 42 inside the gantry 41, achieving horizontal position adjustment; the electric telescopic rod 44 drives the lifting rod 45 and the spraying plate 46 to move vertically, thereby precisely adjusting the position and height of the spraying plate 46 to a suitable starting position for spraying. Once the spraying plate 46 is in place, the first extraction pump 410 starts, drawing PVC paint from the spraying box 47 and transporting it to the inside of the spraying plate 46 through the first conduit 411. Because the inside of the spraying plate 46 is hollow and the inner bottom wall has densely packed small holes, the paint is evenly sprayed out from the small holes under pressure, performing large-area, uniform PVC spraying on the battery bottom cover placed in the placement frame 3. During the spraying process, the electric slider 43 and the electric telescopic rod 44 can be readjusted by the controller 2 according to actual needs to ensure that the entire surface of the battery bottom cover is accurately sprayed.
[0039] During the spraying process, some PVC coating may fail to adhere to the battery bottom cover and spill out. This spilled coating falls into the recycling bin 51 below the placement frame 3. The filter plate 52 at the top of the recycling bin 51 performs preliminary filtration of the coating, separating impurities. At this time, the controller 2 sends an electrical signal to the second extraction pump 53 to start it. The second extraction pump 53 extracts the filtered coating from the recycling bin 51 through the suction pipe 54 and transports it back to the spraying box 47 via the second conduit 55. Because the second conduit 55 is equipped with a one-way valve, it can effectively prevent coating backflow, ensuring that the recycled coating can smoothly enter the spraying box 47, realizing the recycling of coating and reducing material waste.
[0040] Through the coordinated work of the three stages of spraying preparation, spraying operation and material recycling, the PVC spraying device for the bottom cover of new energy vehicle batteries achieves efficient, precise and environmentally friendly spraying operations, ensuring the quality and efficiency of PVC spraying for the bottom cover of batteries.
[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0042] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A PVC spraying device for the bottom guard plate of a new energy vehicle battery, comprising a support plate (1), characterized in that: A controller (2) is fixedly connected to the outside of the support plate (1), a placement frame (3) is provided between the support plates (1), and a spraying mechanism (4) is provided on the top of the support plate (1). The spraying mechanism (4) includes a gantry (41), a slide rail (42) is fixedly connected to the inner side of the gantry (41), an electric slider (43) is slidably connected to the outer side of the slide rail (42), an electric telescopic rod (44) is fixedly connected to the bottom of the electric slider (43), a lifting rod (45) is fixedly connected to the bottom of the electric telescopic rod (44), a spraying plate (46) is fixedly connected to the bottom of the lifting rod (45), a spraying box (47) is fixedly connected to the top of the gantry (41), a cover plate (48) is snapped onto the top of the spraying box (47), a scale plate (49) is fixedly connected to the outer side of the spraying box (47), a first extraction pump (410) is fixedly connected to the outer side of the first extraction pump (410), and a first conduit (411) is fixedly connected to the outer side of the first extraction pump (410).
2. The PVC spraying device for the bottom guard plate of a new energy vehicle battery according to claim 1, characterized in that: A recycling mechanism (5) is provided below the placement frame (3). The recycling mechanism (5) includes a recycling frame (51). A filter plate (52) is provided on the top of the recycling frame (51). A second extraction pump (53) is fixedly connected to the outside of the recycling frame (51). A suction tube (54) is fixedly connected to one end of the second extraction pump (53) inside the recycling frame (51). A second conduit (55) is fixedly connected to the outside of the second extraction pump (53).
3. The PVC spraying device for the bottom guard plate of a new energy vehicle battery according to claim 1, characterized in that: The placement frame (3) is located between two support plates (1), and the gantry frame (41) is fixedly connected to the top of the two placement frames (3).
4. The PVC spraying device for the bottom guard plate of a new energy vehicle battery according to claim 1, characterized in that: The electric slider (43) is electrically connected to the electric telescopic rod (44) and the controller (2). The interior of the spray plate (46) is hollow, and the inner bottom wall of the spray plate (46) is filled with numerous small holes.
5. A PVC spraying device for the bottom guard plate of a new energy vehicle battery according to claim 1, characterized in that: The initial position of the spray plate (46) is above the placement frame (3), and the length of the spray plate (46) is the same as the internal width of the placement frame (3). The end of the first conduit (411) away from the first extraction pump (410) is fixedly connected to the inside of the spray plate (46).
6. A PVC spraying device for the bottom guard plate of a new energy vehicle battery according to claim 2, characterized in that: The recycling box (51) is fixedly connected between the two support plates (1), and the recycling box (51) is located directly below the placement box (3).
7. A PVC spraying device for the bottom guard plate of a new energy vehicle battery according to claim 2, characterized in that: The second extraction pump (53) is electrically connected to the controller (2), and the suction tube (54) is located inside the recovery box (51).
8. A PVC spraying device for the bottom guard plate of a new energy vehicle battery according to claim 2, characterized in that: The end of the second conduit (55) away from the second extraction pump (53) is fixedly connected to the inside of the spray box (47), and a one-way valve is provided inside the second conduit (55).