CN220751500U - Helium detection and short circuit detection integrated device - Google Patents

Abstract

The utility model relates to a helium detection and short circuit detection integrated device which comprises a helium detection box body, wherein the helium detection box body is provided with a helium detection cavity for placing a battery, the helium detection cavity is provided with an opening, the opening end of the helium detection cavity is connected with a sealing cover for sealing the helium detection cavity in a matched mode, and a helium injection part for injecting helium into the battery in the helium detection cavity and a short circuit detection part for detecting whether the battery in the helium detection cavity is short-circuited are arranged on the sealing cover. The helium detection and short circuit detection integrated device can simultaneously carry out short circuit detection and helium detection of the battery, effectively improves the working efficiency, ensures stable and efficient production of a production line, has a simple structure, is convenient to install and debug, saves cost, omits repeated positioning of the battery, and effectively avoids damage to the appearance of the aluminum shell of the battery.

Description

An integrated device for helium detection and short circuit detection

Technical Field

The utility model relates to the technical field of lithium battery production, in particular to a helium detection and short circuit detection integrated device.

Background technique

The electrification of automobiles has become the mainstream trend of the development of the world's automobile industry. The demand for power batteries continues to grow, and the global lithium-ion battery market will continue to expand. Reducing the cost of battery production is an important prerequisite for achieving large-scale production. Among the existing production costs of lithium batteries, the purchase and maintenance costs of equipment account for a high proportion, and equipment integration is an effective way to reduce costs.

After welding the periphery of the aluminum shell of a lithium battery, it is often necessary to test whether the battery is short-circuited and whether the weld is leaking. Among them, the commonly used detection method for detecting whether the weld is leaking is helium detection. Helium detection is to evacuate the product to be inspected and fill it with helium at a certain pressure. The outside of the inspected product is a vacuum space with a certain vacuum requirement. The vacuum space is connected to the leakage port of the helium detector. If the inspected workpiece has a leak, the helium leaked into the vacuum space can be detected by the helium detector. At present, the short-circuit detection and weld leakage detection of lithium batteries mainly set up short-circuit test stations and helium detection stand-alone equipment respectively. There are many common problems such as multiple mechanisms, low efficiency, difficult equipment layout, large space occupation and high cost, inconvenient operation by personnel, and the battery needs to be repeatedly positioned, which is easy to damage the surface of the aluminum shell.

Utility Model Content

Based on this, for the current short-circuit detection and weld leakage detection of lithium batteries, short-circuit test stations and helium detection stand-alone equipment are mainly set up separately. There are common problems such as many mechanisms, low efficiency, difficult equipment layout, large space and high cost, inconvenient operation for personnel, and the battery needs to be repeatedly positioned which easily damages the aluminum shell surface. It is necessary to provide an integrated helium detection and short-circuit detection device.

The utility model proposes an integrated device for helium detection and short-circuit detection, which comprises a helium detection box, wherein the helium detection box has a helium detection cavity for placing a battery and the helium detection cavity has an opening, the open end of the helium detection cavity is cooperatively connected with a sealing cover for sealing the same, and the sealing cover is provided with a helium injection part for injecting helium into the battery inside the helium detection cavity and a short-circuit detection part for detecting whether the battery inside the helium detection cavity is short-circuited.

The utility model integrates the helium injection component and the short-circuit detection component on the sealing cover. After the battery is placed in the helium detection cavity, the short-circuit detection and helium detection of the battery can be carried out at the same time, which effectively improves the work efficiency, reduces the floor space and equipment cost, has a simple structure and is easy to operate, eliminates the need for repeated positioning of the battery, and effectively avoids damage to the appearance of the battery aluminum shell.

As a further improvement of the above solution of the utility model, the helium injection component includes a plurality of helium injection rods, each of which is equipped with a helium injection nozzle. When the sealing cover seals the helium detection cavity, the plurality of helium injection rods respectively inject helium into the plurality of batteries inside the helium detection cavity.

As a further improvement of the above scheme of the utility model, the short-circuit detection member includes a plurality of detection groups, each of which includes two probes. When the sealing cover seals the helium detection chamber, the plurality of detection groups correspond to a plurality of batteries inside the helium detection chamber one by one, and the two probes of the detection group are respectively pressed against the positive and negative poles of the corresponding battery to detect whether the corresponding battery is short-circuited.

As a further improvement of the above-mentioned scheme of the utility model, the integrated helium detection and short-circuit detection device also includes a moving module, a mounting frame and a lifting mechanism. The moving module is used to drive the helium detection box to move back and forth in a straight line. A detection station is arranged on the moving path of the helium detection box. The mounting frame and the lifting mechanism are both installed at the detection station. The sealing cover is installed on the top of the mounting frame. The lifting mechanism is used to lift the helium detection box at the detection station upward and cooperate with the sealing cover to achieve the sealing of the helium detection cavity.

As a further improvement of the above solution of the utility model, the mobile module includes a base, a carrier plate and a driving unit. The carrier plate is slidably installed on the base and is used to carry the helium inspection box. The driving unit is used to drive the carrier plate to move linearly back and forth on the base.

As a further improvement of the above solution of the utility model, the jacking mechanism includes two jacking cylinders, which are respectively arranged on both sides of the base, and jacking blocks are installed on the telescopic rods of the jacking cylinders.

As a further improvement of the above scheme of the utility model, the sealing cover includes a cover plate and a sealing cover, the sealing cover is installed on the cover plate and the helium injection component and the short-circuit detection component are both arranged in the sealing cover, the shape of the sealing cover is adapted to the shape of the helium inspection box body and the opening end of the helium inspection box body can be extended into the sealing cover, and when the opening end of the helium inspection box body is extended into the sealing cover, the inner surface of the sealing cover and the end surface of the opening end of the helium inspection box body can be butted and fitted with the end surface of the sealing cover.

As a further improvement of the above solution of the utility model, a sealing ring is arranged on the end surface of the opening end of the helium detection box.

Compared with the prior art, the utility model has the following beneficial effects:

The helium detection and short-circuit integrated detection device of the utility model can simultaneously perform short-circuit detection and helium detection of the battery, effectively improving work efficiency and ensuring stable and efficient production of the production line. The utility model has a simple structure, is easy to install and debug, saves costs, eliminates the need for repeated positioning of the battery, and effectively avoids damage to the appearance of the battery aluminum shell.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the structure of a helium detection and short circuit detection integrated device proposed in an embodiment of the utility model;

FIG2 is a partial structural schematic diagram of FIG1 ;

FIG. 3 is a partial structural schematic diagram of FIG. 2 .

Figure numerals: 1. helium inspection box; 2. helium injection rod; 3. helium injection nozzle; 4. probe; 5. mounting frame; 6. base; 7. carrier plate; 8. drive unit; 9. lifting cylinder; 10. lifting block; 11. cover plate; 12. sealing cover; 13. battery.

Detailed ways

The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Example

Please refer to Figure 1, this embodiment provides an integrated helium detection and short circuit detection device, which includes a helium detection box 1, a sealing cover, a helium injection component and a short circuit detection component, and may also include a moving module, a mounting frame 5 and a lifting mechanism.

The mobile module is installed on the external device, and the mobile module includes a base 6, a carrier plate 7 and a drive unit 8. Two parallel and oppositely arranged linear guide rails are installed on the base 6. The bottom of the carrier plate 7 is connected to the sliders of the two linear guide rails. The drive unit 8 is used to drive the carrier plate 7 to move back and forth linearly on the base 6. The drive unit 8 can adopt a screw transmission mechanism or a cylinder transmission mechanism, as long as the linear movement of the carrier plate 7 can be achieved. In this embodiment, a loading station, a detection station for battery helium detection and short circuit detection, and a unloading station are sequentially arranged on the moving path of the carrier plate 7.

The mounting frame 5 is arranged at the detection station and the mounting frame 5 is installed on the external device. The mounting frame 5 is provided with four mounting columns and two mounting columns are arranged on both sides of the base 6, and the mounting columns are arranged vertically.

The sealing cover can be connected with the open end of the helium detection box 1 to seal the helium detection chamber. Referring to FIG. 2 , the sealing cover includes a cover plate 11 and a sealing cover 12. The cover plate 11 is arranged horizontally and connected to four mounting posts of the mounting frame 5. The sealing cover 12 is arranged below the cover plate 11 and is integrally connected to the cover plate 11.

The jacking mechanism is arranged at the detection station, and the jacking mechanism comprises two jacking cylinders 9 , and the two jacking cylinders 9 are arranged on both sides of the base 6 , and the telescopic rods of the jacking cylinders 9 are connected with jacking blocks 10 .

The helium inspection box 1 has a helium inspection cavity for placing the battery 13, and the top of the helium inspection box 1 is open. In this embodiment, the volume of the helium inspection cavity is not specifically limited, and can be reasonably set according to the number of batteries 13 to be tested at a single time. The shape of the sealing cover 12 is adapted to the shape of the helium inspection box 1. The helium inspection box 1 is carried by the carrier plate 7 and can move with the movement of the carrier plate 7, and when the helium inspection box 1 moves to the inspection station, the two lifting cylinders 9 act simultaneously and jointly lift the helium inspection box 1 upward, so that the top end face of the helium inspection box 1 is butted against the lower end face of the sealing cover 12 to achieve the sealing of the helium inspection cavity. In this embodiment, in order to improve the sealing between the sealing cover and the helium inspection box 1, a sealing ring can also be provided on the end face of the open end of the helium inspection box 1.

The helium injection component and the short circuit detection component are both installed on the sealing cover. In conjunction with Figure 3, the helium injection component includes a number of helium injection rods 2, the number of which is consistent with the number of batteries 13 tested at a single time, and the helium injection rods 2 correspond to the batteries 13 one by one. The helium injection rods 2 penetrate the cover plate 11 and extend into the sealing cover 12, and the helium injection rods 2 are located in the sealing cover 12. One end is equipped with a helium injection nozzle 3 that can be pressed against the liquid injection port of the battery 13. The short circuit detection component includes a number of detection groups, the number of which is consistent with the number of batteries 13 tested at a single time, and the detection groups correspond to the batteries one by one. The detection groups also correspond to the helium injection rods 2 one by one. Each detection group includes two probes 4, and the two probes 4 correspond to the positive and negative poles of the corresponding battery 13, respectively. The two probes 4 of the detection group are installed below the cover plate 11 and located in the sealing cover 12. In other embodiments, the two probes 4 of the detection group can also be installed on the required helium injection rods 2 through mounting parts.

The working principle of this embodiment is described in detail below by taking an example in which the number of the helium injection rod 2 and the number of the detection group are both 1 and a loading robot and a unloading robot are installed at the loading station and the unloading station respectively.

The driving unit 8 starts, and the driving carrier 7 drives the helium inspection box 1 to move to the loading station. The driving unit 8 stops, and the loading robot loads a battery 13 to be tested into the helium inspection chamber; the driving unit 8 drives the carrier 7 to continue to move. When the carrier 7 moves to the inspection station, the driving unit 8 stops, and the two lifting cylinders 9 start at the same time and jointly lift the helium inspection box 1 upward to be sealed and connected with the sealing cover. At this time, the helium injection nozzle 3 of the helium injection rod 2 presses the injection port of the battery 13 to inject helium into the battery 13. The helium inspection machine on the helium inspection box 1 determines whether there is leakage in the battery, and the two probes 4 respectively press the positive and negative poles of the battery 13 to detect whether the battery 13 is short-circuited; after the detection is completed, the lifting cylinder 9 drives the helium inspection box 1 to descend and reset, and the helium inspection box 1 returns to the carrier 7 again, and the driving unit 8 continues to drive the carrier 7 to move. When the carrier 7 moves to the unloading station, the driving unit 8 stops, and the unloading manipulator moves to transfer the battery 13 in the helium inspection cavity; repeat the above actions to achieve continuous detection of the battery 13.

The integrated helium detection and short-circuit detection device of the utility model can simultaneously perform short-circuit detection and helium detection of the battery, effectively improving work efficiency and ensuring stable and efficient production of the production line. The utility model has a simple structure, is easy to install and debug, saves costs, eliminates the need for repeated positioning of the battery, and effectively avoids damage to the appearance of the battery aluminum shell.

It should be noted that when a component is referred to as being "mounted on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. When a component is considered to be "fixed to" another component, it may be directly fixed on the other component or there may be a central component at the same time.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or/and" used herein includes any and all combinations of one or more related listed items.

The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims (8)

1. A helium detection and short circuit detection integrated device, characterized in that it comprises a helium detection box (1), the helium detection box (1) having a helium detection cavity for placing a battery and the helium detection cavity having an opening, the open end of the helium detection cavity being cooperatively connected to a sealing cover for sealing the same, the sealing cover being provided with a helium injection part for injecting helium gas into the battery inside the helium detection cavity and a short circuit detection part for detecting whether the battery inside the helium detection cavity is short-circuited. 2. The integrated helium detection and short circuit detection device according to claim 1 is characterized in that the helium injection component comprises a plurality of helium injection rods (2), each of which is provided with a helium injection nozzle (3), and when the sealing cover seals the helium detection chamber, the plurality of helium injection rods (2) respectively inject helium into the plurality of batteries inside the helium detection chamber. 3. The integrated helium detection and short circuit detection device according to claim 1 is characterized in that the short circuit detection component includes a plurality of detection groups, each of the detection groups includes two probes (4), and when the sealing cover seals the helium detection chamber, the plurality of detection groups correspond to a plurality of batteries inside the helium detection chamber, and the two probes (4) of the detection group are respectively pressed against the positive and negative poles of the corresponding battery to detect whether the corresponding battery is short-circuited. 4. The integrated device for helium detection and short circuit detection according to claim 1 is characterized in that the integrated device for helium detection and short circuit detection further comprises a moving module, a mounting frame (5) and a lifting mechanism, the moving module is used to drive the helium detection box (1) to move back and forth in a straight line, a detection station is arranged on the moving path of the helium detection box (1), the mounting frame (5) and the lifting mechanism are both installed at the detection station, the sealing cover is installed at the top of the mounting frame (5), and the lifting mechanism is used to lift the helium detection box (1) at the detection station upward to cooperate with the sealing cover to achieve the sealing of the helium detection cavity. 5. The integrated helium detection and short circuit detection device according to claim 4 is characterized in that the mobile module comprises a base (6), a carrier plate (7) and a driving unit (8), the carrier plate (7) is slidably mounted on the base (6) and is used to carry the helium detection box (1), and the driving unit (8) is used to drive the carrier plate (7) to move linearly back and forth on the base (6). 6. The integrated helium detection and short circuit detection device according to claim 4 is characterized in that the lifting mechanism includes two lifting cylinders (9), the two lifting cylinders (9) are respectively arranged on both sides of the base (6), and a lifting block (10) is installed on the telescopic rod of the lifting cylinder (9). 7. The integrated helium detection and short circuit detection device according to claim 1 is characterized in that the sealing cover comprises a cover plate (11) and a sealing cover (12), the sealing cover (12) is mounted on the cover plate (11) and the helium injection component and the short circuit detection component are both arranged in the sealing cover (12), the shape of the sealing cover (12) is adapted to the shape of the helium detection box (1) and the end face of the opening end of the helium detection box (1) can be butted and fitted with the end face of the sealing cover (12). 8. The integrated helium detection and short circuit detection device according to claim 7, characterized in that a sealing ring is provided on the end surface of the opening end of the helium detection box (1).