CN-121977762-A - Hard shell battery airtight detection equipment and method

CN121977762ACN 121977762 ACN121977762 ACN 121977762ACN-121977762-A

Abstract

The invention relates to the technical field of battery detection equipment, and particularly provides hard-shell battery airtight detection equipment and a hard-shell battery airtight detection method, wherein the equipment comprises a support frame, an upper detection tool, a lower sealing table, a linear slide rail and a lifting mechanism; the upper detection tool is fixed on the support frame, the lower sealing table is used for bearing a tray with a plurality of batteries, the tray is arranged on the linear sliding rail in a sliding mode, the linear sliding rail is provided with a feeding station and a detection station, and the lifting mechanism is used for driving the lower sealing table to ascend under the detection station so that the upper detection tool and the lower sealing table are surrounded to form a closed airtight cavity. According to the invention, a plurality of batteries are arranged on the tray and are subjected to airtight detection in one airtight cavity, the enclosure of the upper detection tool and the lower sealing table can be completed only through vertical lifting, the accurate positioning of the batteries on the tray is ensured, the batch detection of single equipment can be rapidly realized, the complexity and the occupied area of the equipment are not increased, the detection precision is ensured, and the production efficiency of the hard shell battery automatic assembly line is effectively improved.

Inventors

WU JIAFU
YANG PENG
CHEN XING
ZHANG XU
SONG ZHONGYUAN
WU QINGHUA
ZHANG JUNTAO

Assignees

苏州玻色智能科技有限公司
成都绛溪未来光电科技有限公司

Dates

Publication Date: 20260505
Application Date: 20251231

Claims (10)

1. The hard shell battery airtight detection equipment is characterized by comprising a support frame, an upper detection tool, a lower sealing table, a linear sliding rail and a lifting mechanism, wherein the upper detection tool is fixed on the support frame, the lower sealing table is used for bearing a tray on which a plurality of batteries are placed and is arranged on the linear sliding rail in a sliding mode, the linear sliding rail is provided with a feeding station and a detection station, and the lifting mechanism is used for driving the lower sealing table to ascend at the detection station so that the upper detection tool and the lower sealing table are surrounded to form an airtight cavity.
2. The hard shell battery airtight detection device according to claim 1, wherein the upper detection tool comprises a mounting plate and a cavity plate connected below the mounting plate, a cavity is formed between the mounting plate and the cavity plate, and an air passage interface communicated with the cavity is arranged on the mounting plate.
3. The apparatus of claim 2, wherein the bottom surface of the cavity plate is provided with a plurality of detecting bosses with detecting air holes, and a predetermined distance is maintained between each battery surface and the corresponding detecting boss when the upper detecting tool and the lower sealing table are surrounded.
4. The airtight detection apparatus for a hard-shell battery according to claim 3, wherein the mounting plate is detachably connected with the cavity plate through a sliding pair, the sliding pair comprises a sliding groove formed in the bottom surface of the mounting plate and sliding wings matched with the sliding groove on two sides of the cavity plate, and the sliding groove and the sliding wings are fixed through a locking structure.
5. The airtight detection apparatus for hard case batteries according to claim 4, wherein a plurality of battery placement positions for fixing the batteries are provided on the tray, each battery placement position is formed by enclosing two parallel slide bars and a stopper slidably provided on each slide bar, and positions of the slide bars and the stopper are independently adjustable and lockable.
6. The hard-shell battery airtight detection apparatus according to claim 2, wherein a groove for accommodating the tray is provided on a surface of the lower sealing table, a first positioning pin is provided in the groove, and a first bolt hole adapted to the first positioning pin is provided on a bottom surface of the tray.
7. The hard-shell battery airtight detection apparatus according to claim 6, wherein a boss is provided at an edge of the recess, and a first annular sealing ring is provided on an upper surface of the boss, for pressing and sealing with a bottom surface of the cavity plate when the upper detection tool and the lower sealing table are surrounded.
8. The hard-shell battery airtight detection device according to claim 1, wherein the lifting mechanism comprises a fixed plate, a lifting plate and a lifting cylinder, the fixed plate is connected to the linear sliding rail in a sliding mode, the lifting plate is arranged above the fixed plate, the lifting cylinder drives the lifting plate, the lower sealing table is fixed to the lifting plate, a guide portion is arranged between the lifting plate and the fixed plate, and the guide portion comprises a vertical guide column and a buffer.
9. The hard-shell battery airtight detection equipment according to claim 8, wherein the fixing plate is connected with a driving unit for driving the fixing plate to move along the linear sliding rail, and the linear sliding rail is provided with a positioning buffer block at the detection station end, wherein the positioning buffer block is used for being abutted with the fixing plate.
10. A method of testing the air tightness of a hard shell battery using the apparatus of any of claims 2-9, comprising the steps of: S1, placing a plurality of batteries to be tested in a battery placement position of a tray; S2, placing a tray for bearing the battery on a lower sealing table positioned at a loading station; S3, driving the lower sealing table to move to a detection station and locate, and then driving the lower sealing table to rise and clamp to form an airtight cavity; s4, respectively communicating the gas circuit interfaces to perform leakage detection; s5, controlling the lower sealing platform to carry the tray to move back to the blanking station.

Description

Hard shell battery airtight detection equipment and method Technical Field The invention relates to the technical field of battery detection equipment, and particularly provides hard-shell battery airtight detection equipment and a hard-shell battery airtight detection method. Background The air tightness of hard shell batteries (e.g., aluminum or steel shell batteries) is a central indicator of their safety and performance. Any minor leakage from the battery housing may lead to electrolyte leakage or external air and moisture infiltration, causing serious safety problems such as performance degradation, short circuit, and even thermal runaway. It is important to detect the air tightness of the hard-shell battery before it leaves the factory and to screen out defective batteries. Currently, gas tightness detection (e.g., pressure drop, helium mass spectrometry leak detection) of mainstream industry generally adopts a "single-station" detection mode for a single cell. The mode has an inherent efficiency bottleneck that the detection cycle (comprising feeding, positioning, sealing, detecting and discharging) of a single battery is long in time consumption and is difficult to match with the increasing productivity and beat requirements of a modern production line. In order to improve the overall detection efficiency, a solution adopted in the prior art is to physically arrange a plurality of single cell detection devices in parallel so as to realize parallel detection of a plurality of batteries. However, the simple superposition mode of 'changing the quantity and efficiency' improves the throughput to a certain extent, but the introduction of automatic running water occupies a large amount of factory building area, and simultaneously high equipment cost is brought, and meanwhile, the high-precision airtight detection method of helium mass spectrum leakage detection requires that a detection air hole is aligned with a specific point (such as a liquid injection port and a polar column end face) on a battery shell as much as possible. Under the operation modes of independent feeding and separate positioning of a plurality of devices, all stations are guaranteed to reach high efficiency and high precision at the same time, and the coordination and control complexity is extremely high. When pursuing high beat, often because of the positioning time is insufficient or the mechanism repetition precision is limited, poor sealing or inaccurate alignment is caused, the accuracy of the detection result is directly influenced, each device needs an independent feeding and discharging channel and a mechanical arm, the material circulation paths are crossed and frequently waited, the beat of the whole detection unit is often limited to the slowest link, the system integration level is low, and the whole efficiency is limited. Therefore, the prior art has faced a bottleneck in cost, space and precision coordination by increasing the number of single machines to increase the technical path of efficiency. There is a strong need in the industry for innovative high-precision battery air tightness detection equipment and inspection methods. Disclosure of Invention In order to solve the problems, the invention aims to provide novel seal-engraving battery air tightness detection equipment and a detection method, which can obviously improve the air tightness detection efficiency of the battery on the premise of not obviously increasing the area. The technical scheme of the equipment is as follows: The hard shell battery airtight detection equipment comprises a support frame, an upper detection tool, a lower sealing table, a linear sliding rail and a lifting mechanism, wherein the upper detection tool is fixed on the support frame, the lower sealing table is used for bearing a tray on which a plurality of batteries are placed and is arranged on the linear sliding rail in a sliding mode, the linear sliding rail is provided with a feeding station and a detection station, and the lifting mechanism is used for driving the lower sealing table to ascend at the detection station so that an airtight cavity is formed by surrounding the upper detection tool and the lower sealing table. In this scheme, a plurality of batteries set up on the tray and in an airtight chamber unify and carry out airtight detection, the tray only need through vertical lift just can accomplish the enclosing of going up detection frock and lower sealing bench at the detection station, ensures that the location of battery on the tray is accurate, just can realize the batch detection of single equipment fast, has also guaranteed the detection precision when not increasing equipment complexity and area, has effectively improved the production efficiency of hard shell battery automation line. On the one hand, in order to simplify the gas circuit that detects the frock, go up and detect the frock and include the mounting panel and connect in the cavity board of mounting pan