New energy automobile battery case airtightness detection equipment

Abstract

The utility model discloses an airtight detection device for a new energy automobile battery case, which relates to the technical field of detection equipment and comprises a shell, two clamping assemblies and an adjusting assembly are arranged in the shell, and each clamping assembly comprises a mounting plate, a trapezoidal guide plate, a connecting rod, a circular pressing plate, a connecting rod and a control plate. The adjusting assembly comprises a double-shaft motor and a screw rod, the output shaft of the double-shaft motor is controlled to rotate forwards, the screw rod drives the two control plates to move in the opposite directions, the control plates drive the trapezoidal guide plates to slide in the mounting plate through the connecting rods, and the trapezoidal guide plates guide the connecting rods to move in the vertical direction. The double-shaft motor is used for rotating the double-shaft motor, one group of circular pressing plates clamp the battery shell, and after sufficient detection gas is introduced into the battery shell, the output shaft of the double-shaft motor is rotated reversely, so that the other group of circular pressing plates replace the previous group of circular pressing plates for clamping, whether a crack exists at the contact part of the battery shell and the previous group of circular pressing plates or not is conveniently detected, and the accuracy of a detection result is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of detection equipment, and in particular relates to an airtightness detection device for a battery shell of a new energy vehicle. Background Art

[0002] As the demand for environmental protection and sustainable development becomes increasingly urgent, new energy vehicles have developed rapidly. Batteries are the core components of new energy vehicles, and battery shells are the key structures for protecting batteries. They provide mechanical protection for batteries and reduce the risk of battery damage. Battery shells help maintain the operating temperature of the battery within an appropriate range, ensuring battery performance and life. A good battery shell design can prevent internal short circuits, leakage and other faults in the battery, and improve battery safety. In order to ensure that the battery shell is waterproof, maintains battery life and safety, and other performance standards, the battery's airtightness needs to be tested.

[0003] When the battery shell detection equipment in the prior art is in use, the clamping mechanism fixes the battery shell and then detects the air tightness of the battery shell by injecting detection gas into the interior of the battery shell and observing the changes in air pressure inside the battery shell. Since the clamping mechanism will contact the outer surface of the battery shell, if there are cracks in the contact part of the battery shell, the clamping mechanism will block the leakage part, so that the detection gas in the battery shell cannot leak out from these cracks, affecting the air pressure monitoring data of the battery shell, and thus causing inaccurate detection results of the equipment. Utility Model Content

[0004] The purpose of this utility model is to provide an airtightness detection device for battery shells of new energy vehicles. By setting a clamping component and an adjustment component, the problem of inaccurate detection results caused by the clamping mechanism blocking the cracks on the battery shell in the existing airtightness detection equipment is solved.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The utility model is a new energy vehicle battery shell airtightness detection device, including a shell, two clamping components are fixedly arranged inside the shell, the two clamping components are symmetrically arranged in the upper and lower parts, and an adjustment component is arranged between the two clamping components. The adjustment component includes a dual-axis motor fixed on the inner wall of the shell, and both output ends of the dual-axis motor are connected to screws.

[0007] The utility model is further configured such that the clamping assembly includes a mounting plate, a side surface of the mounting plate is provided with a plurality of movable grooves in a circumferential array, a top of the mounting plate is provided with a plurality of trapezoidal sliding holes in a circumferential array that pass through the movable grooves, and a sliding groove is provided on the bottom side wall of the mounting plate.

[0008] The utility model is further configured such that a trapezoidal guide plate is slidably fitted in the two sliding grooves, the installation directions of the two adjacent trapezoidal guide plates are opposite, a connecting rod is slidably fitted on the upper surface of the trapezoidal guide plate, and the connecting rod is slidably fitted in the trapezoidal sliding hole.

[0009] The utility model is further configured such that one end of the connecting rod close to the trapezoidal guide plate is arc-shaped, the other end of the connecting rod is fixedly connected to a circular pressure plate, the peripheral side of the connecting rod is fixedly connected to a limiting ring, and a spring is provided on one end of the peripheral side of the connecting rod at the limiting ring.

[0010] The utility model is further configured such that one side of the trapezoidal guide plate is ball-hinged with a connecting rod, the end of the connecting rod away from the trapezoidal guide plate is ball-hinged with a control plate, a guide hole is penetrated through one side of the control plate, and a guide rod fixed to the inner wall of the shell is inserted into the guide hole.

[0011] The utility model is further configured such that the spiral directions of the external threads of the two screw rods are opposite, and the two screw rods are respectively threadedly connected to the two control plates.

[0012] The present invention is further configured such that an air pump is fixed to the inner wall of the shell, and an output end of the air pump is connected to an exhaust pipe.

[0013] The utility model has the following beneficial effects:

[0014] The utility model drives the two screws to rotate by the two output ends of the double-axis motor, so that the two control plates move in opposite directions, and the control plates drive the trapezoidal guide plates to slide in the movable grooves through the connecting rods, and guide the connecting rods to move in the vertical direction, so that one group of circular pressure plates clamps the battery shell, so as to facilitate the introduction of detection gas into the battery shell, and then controls the double-axis motor to reverse, so that the other group of circular pressure plates gradually clamps the battery shell, so as to facilitate the detection of whether there are cracks at the contact parts of the battery shell and the previous group of circular pressure plates, thereby improving the accuracy of the detection results, and the clamping assembly clamps the middle part of the battery shell, so that the battery shell will not tilt to both sides when the two groups of circular pressure plates clamp alternately, and the clamping mechanism occupies less space in the equipment, so as to facilitate the control of the equipment volume and save manufacturing costs.

[0015] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 This is a cross-sectional schematic diagram of an airtightness testing device for a new energy vehicle battery shell.

[0018] Figure 2 It is a structural diagram of the clamping component and the adjustment component.

[0019] Figure 3 A schematic cross-sectional view of the clamping assembly.

[0020] Figure 4 for Figure 3 Enlarged schematic diagram of point A in the middle.

[0021] Figure 5 Schematic diagram of the structure of the clamping assembly after removing the mounting plate.

[0022] Figure 6 Schematic diagram of the structure of the mounting plate.

[0023] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0024] 1. Housing; 2. Clamping assembly; 201. Mounting plate; 202. Trapezoidal guide plate; 203. Connecting rod; 204. Circular pressure plate; 205. Limiting ring; 206. Spring; 207. Connecting rod; 208. Control board; 209. Guide rod; 210. Movable groove; 211. Slide groove; 212. Trapezoidal slide hole; 213. Guide hole; 3. Adjustment assembly; 301. Dual-axis motor; 302. Screw; 4. Air pump; 5. Exhaust pipe. DETAILED DESCRIPTION

[0025] The following will be combined with the accompanying 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention. Specific embodiment 1

[0027] See also Figure 1-6The utility model is a new energy vehicle battery shell airtightness detection device, including a shell 1, two clamping components 2 are fixedly arranged inside the shell 1, the two clamping components 2 are symmetrically arranged in the upper and lower directions, and an adjustment component 3 is arranged between the two clamping components 2. The adjustment component 3 includes a dual-axis motor 301 fixed to the inner wall of the shell 1, and both output ends of the dual-axis motor 301 are connected to screws 302.

[0028] Specifically, the clamping assembly 2 includes a mounting plate 201, a side surface of the mounting plate 201 is provided with a plurality of movable grooves 210 in a circumferential array, a top of the mounting plate 201 is provided with a plurality of trapezoidal sliding holes 212 that penetrate the movable grooves 210 in a circumferential array, a sliding groove 211 is provided on the bottom side wall of the mounting plate 201, and a trapezoidal guide plate 202 is slidably fitted in the two sliding grooves 211. The installation directions of the two adjacent trapezoidal guide plates 202 are opposite, and a connecting rod 203 is slidably fitted on the upper surface of the trapezoidal guide plate 202, and the connecting rod 203 slides with the trapezoidal sliding hole 212. The connecting rod 203 is dynamically matched, and one end of the connecting rod 203 close to the trapezoidal guide plate 202 is arc-shaped. The other end of the connecting rod 203 is fixedly connected to a circular pressure plate 204. The side surface of the connecting rod 203 is fixedly connected to a limit ring 205. The side surface of the connecting rod 203 is located at one end of the limit ring 205 and is sleeved with a spring 206. One side of the trapezoidal guide plate 202 is ball-hinged with a connecting rod 207, and the end of the connecting rod 207 away from the trapezoidal guide plate 202 is ball-hinged with a control plate 208. An air pump 4 is fixed to the inner wall of the shell 1, and the output end of the air pump 4 is connected to an exhaust pipe 5.

[0029] The operating process of this embodiment is as follows: when the equipment is in a non-working state, the angle formed between the trapezoidal guide plate 202, the connecting rod 207 and the control plate 208 should be the set initial angle. At this time, the circular pressure plates 204 in the clamping assembly 2 should be in the same plane. Since the installation directions of the two adjacent trapezoidal guide plates 202 are opposite, when the trapezoidal guide plate 202 moves away from or close to the center point of the mounting plate 201, the trapezoidal guide plate 202 will drive the adjacent connecting rods 203 to move in opposite directions respectively. Therefore, the circular pressure plates 204 in the two clamping assemblies 2 can be divided into two groups according to the installation direction of the trapezoidal guide plate 202.

[0030] When the device starts working, the battery shell to be tested is first placed between the two clamping components 2, and then the two control plates 208 are adjusted to move toward each other in the vertical direction through the adjustment component 3. The control plate 208 causes the various connecting rods 207 connected thereto to rotate relative to the control plate 208, and the connecting rods 207 drive the trapezoidal guide plate 202 to move along the slide groove 211 in a direction away from the center point of the mounting plate 201. The trapezoidal guide plate 202 drives the adjacent connecting rods 203 to move in the opposite direction along the trapezoidal slide hole 212 through the contact slope with the connecting rod 203. The connecting rod 203 drives the two groups of circular pressure plates 204 in the clamping assembly 2 to move in opposite directions, so that one group of circular pressure plates 204 gradually contacts the outer surface of the battery shell and clamps it up and down, and then restricts the two control plates 208 from moving. Then, the detection gas can be introduced into the battery shell through the exhaust pipe 5 connected to the air pump 4. When a sufficient amount of detection gas is introduced, the air pressure data in the battery shell is monitored in real time by the air pressure sensor arranged in the battery shell. (The air pressure sensor is a prior art, not shown in the figure, and will not be elaborated on here) If the air pressure in the battery shell is maintained When the battery shell is kept stable, it is necessary to adjust the two control plates 208 to move in the opposite direction through the adjustment component 3, and each connecting rod 207 rotates in the opposite direction relative to the control plate 208, and the connecting rod 207 drives the trapezoidal guide plate 202 to move along the slide groove 211 toward the center point of the mounting plate 201, which makes the group of circular pressure plates 204 that initially clamped the battery shell gradually move away from the battery shell, and the other group of circular pressure plates 204 gradually clamp the battery shell, thereby realizing the alternating clamping of the two groups of circular pressure plates 204, and continue to observe the change of air pressure in the battery shell after the alternation. , to eliminate the possibility of cracks in the contact area between the circular pressure plate 204 and the battery shell, and the spring 206 sleeved on the side surface of the connecting rod 203 is always in a compressed state, so that the arc end of the connecting rod 203 remains in contact with the inclined surface of the trapezoidal guide plate 202, and the two sets of circular pressure plates 204 both clamp the middle part of the battery shell, so that the battery shell will not tilt to both sides when the two sets of circular pressure plates 204 clamp alternately. The circular pressure plates 204 can be made of a material with a certain elasticity such as resin to avoid leaving scratches on its surface when clamping the battery shell. Specific embodiment 2

[0032] See also Figure 1-6 On the basis of the first specific embodiment, the adjustment component 3 includes a dual-axis motor 301 fixed to the inner wall of the housing 1 , and both output ends of the dual-axis motor 301 are connected to a screw 302 .

[0033] Specifically, a guide hole 213 is formed through one side of the control board 208, and a guide rod 209 fixed to the inner wall of the shell 1 is inserted into the guide hole 213. The spiral directions of the external threads of the two screws 302 are opposite, and the two screws 302 are threadedly connected to the two control boards 208 respectively.

[0034] The operation process of this embodiment is as follows: by starting the dual-axis motor 301 to drive the two screws 302 to rotate in the same direction, since the spiral directions of the two screws 302 are opposite, the screws 302 drive the two control plates 208 to move in opposite directions, and by changing the rotation direction of the two output shafts of the dual-axis motor 301, the movement direction of the two control plates 208 is adjusted to achieve the two groups of circular pressure plates 204 alternately clamping the battery shell, and by locking the two output shafts of the dual-axis motor 301 to keep the clamping assembly 2 clamping the battery shell, and the guide rods 209 fixed to the inner wall of the shell 1 are respectively inserted into the guide holes 213 on the two control plates 208 to guide the movement of the two control plates 208 to prevent the screws 302 from driving the control plates 208 to rotate.

[0035] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0036] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A new energy vehicle battery shell airtightness detection device, comprising a shell (1), characterized in that: Two clamping assemblies (2) are fixedly arranged inside the housing (1), and the two clamping assemblies (2) are symmetrically arranged in an upper and lower direction. An adjustment assembly (3) is arranged between the two clamping assemblies (2), and the adjustment assembly (3) includes a dual-axis motor (301) fixed to the inner wall of the housing (1), and both output ends of the dual-axis motor (301) are connected to screws (302).

2. A new energy vehicle battery shell airtightness detection device according to claim 1, characterized in that: The clamping assembly (2) comprises a mounting plate (201), a side surface of the mounting plate (201) is provided with a plurality of movable grooves (210) in a circumferential array, a top of the mounting plate (201) is provided with a plurality of trapezoidal sliding holes (212) in a circumferential array and communicating with the movable grooves (210), and a bottom side wall of the mounting plate (201) is provided with a sliding groove (211).

3. A new energy vehicle battery shell airtightness detection device according to claim 2, characterized in that: A trapezoidal guide plate (202) is slidably fitted in the two slide grooves (211), and the installation directions of the two adjacent trapezoidal guide plates (202) are opposite. A connecting rod (203) is slidably fitted on the upper surface of the trapezoidal guide plate (202), and the connecting rod (203) is slidably fitted in the trapezoidal sliding hole (212).

4. The new energy vehicle battery shell airtightness detection device according to claim 3 is characterized in that: One end of the connecting rod (203) close to the trapezoidal guide plate (202) is arc-shaped, the other end of the connecting rod (203) is fixedly connected to a circular pressure plate (204), the peripheral side surface of the connecting rod (203) is fixedly connected to a limiting ring (205), and a spring (206) is provided on the peripheral side surface of the connecting rod (203) at one end of the limiting ring (205) for sleeve connection.

5. The new energy vehicle battery shell airtightness detection device according to claim 4 is characterized in that: A connecting rod (207) is ball-hinged on one side of the trapezoidal guide plate (202); an end of the connecting rod (207) away from the trapezoidal guide plate (202) is ball-hinged on one side of the control plate (208); a guide hole (213) is provided through one side of the control plate (208); a guide rod (209) fixed to the inner wall of the housing (1) is inserted into the guide hole (213).

6. The new energy vehicle battery shell airtightness detection equipment according to claim 5, characterized in that: The external threads of the two screw rods (302) have opposite spiral directions, and the two screw rods (302) are respectively threadedly connected to the two control plates (208).

7. The new energy vehicle battery shell airtightness detection device according to claim 6, characterized in that: An air pump (4) is fixed to the inner wall of the housing (1), and an output end of the air pump (4) is connected to an exhaust pipe (5).

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