Differential pressure helium detection unit and differential pressure helium detection machine

Abstract

The utility model relates to manufacturing equipment of a water cooling plate, in particular to a differential pressure helium detection unit and a differential pressure helium detection machine. Comprising a bottom plate, a pressing plate mechanism used for pressing a plate body of the water-cooling plate and a sealing mechanism used for sealing a current collector of the water-cooling plate. The pressing plate mechanism comprises a fixed pressing plate fixedly arranged on the bottom plate and extending in the front-back direction, a movable pressing plate slidably connected to the bottom plate in the left-right direction and a pressing plate air cylinder used for driving the movable pressing plate to move left and right. A plurality of upper limiting blocks and lower limiting blocks are arranged on the side face, close to the side of the fixed pressing plate, of the movable pressing plate at intervals in the front-back direction, the upper limiting blocks are located above the lower limiting blocks, a plate body is located between the upper limiting blocks and the lower limiting blocks, and when the movable pressing plate is driven by a pressing plate air cylinder to move in the direction close to the fixed pressing plate, the upper limiting blocks and the lower limiting blocks are separated. The upper limiting block and the lower limiting block abut against the fixed pressing plate so as to prevent the fixed pressing plate from crushing the plate body of the water cooling plate. Damage to the water cooling plate can be reduced.

Description

Technical Field

[0001] This application relates to equipment for manufacturing water-cooled plates, and more particularly to a differential pressure helium detection unit and a differential pressure helium detector. Background Technology

[0002] The descriptions in this section provide background information related to this disclosure only and do not constitute prior art. The water-cooled plate is a crucial component of liquid cooling in a battery pack, and its sealing performance requires testing after assembly. Traditional sealing testing methods involve injecting high-pressure gas into the water-cooled plate, immersing it in water, and manually observing for leaks. This method is inefficient and has low accuracy. In related technologies, helium detectors for water-cooled plates typically place the plate horizontally on a positioning mechanism and press it down using upper and lower pressure plates. However, in such horizontally placed helium detectors, particles may be present on the pressure plates, potentially damaging the water-cooled plate during the pressing process. Summary of the Invention

[0003] In view of this, this application provides a differential pressure helium detection unit and a differential pressure helium detector, which can reduce damage to the water-cooled plate.

[0004] To achieve the above objectives, this application employs the following technical solution:

[0005] A differential pressure helium detection unit, characterized in that it includes a base plate, a pressing plate mechanism for pressing down on the water-cooled plate, and a sealing mechanism for sealing the current collector of the water-cooled plate; the pressing plate mechanism includes a fixed pressing plate fixedly mounted on the base plate and extending in the front-back direction, a movable pressing plate slidably connected to the base plate in the left-right direction, and a pressing plate cylinder for driving the movable pressing plate to move left and right; the movable pressing plate has a plurality of upper limit blocks and lower limit blocks spaced apart in the front-back direction on its side near the fixed pressing plate, the upper limit blocks being located above the lower limit blocks, and the plate being located between the upper limit blocks and the lower limit blocks; when the movable pressing plate moves towards the fixed pressing plate under the drive of the pressing plate cylinder, it presses against the fixed pressing plate through the upper limit blocks and the lower limit blocks to prevent the fixed pressing plate from damaging the water-cooled plate.

[0006] The differential pressure helium detection unit described in this application employs a movable pressure plate that opens and closes from left to right, and a vertically positioned water-cooled plate. The vertical design of the fixed and movable pressure plates prevents particulate matter from accumulating on the sides, reducing damage to the water-cooled plate during the pressing process. Furthermore, upper and lower limit blocks are provided on the movable pressure plate, providing mechanical restraint during pressing and preventing damage to the plate. Multiple upper and lower limit blocks also evenly distribute pressure, preventing uneven stress that could damage the plate.

[0007] In some embodiments, the sealing mechanism includes two sealing assemblies respectively disposed on the front and rear sides of the pressure plate mechanism. Each sealing assembly includes a sealing frame fixedly mounted on a base plate, a sealing cylinder fixedly mounted on the sealing frame, and two sealing cups. The sealing cylinder has two movable claws that can open and close to the left and right. The two sealing cups are respectively fixedly mounted on the two movable claws. When the sealing cylinder drives the two movable claws to close, the two sealing cups are respectively fitted onto the two pipe ends of the collector from both sides. Each sealing cup is provided with an air inlet for inflation. This air inlet is connected to a helium detector.

[0008] In some embodiments, both the fixed pressure plate and the movable pressure plate include a pressure plate base mounted on a base plate, an outer support plate fixedly mounted on the pressure plate base, and an inner pressure plate detachably fixedly mounted inside the outer support plate to press down the plate body. The outer support plate includes a central fixed plate located in the middle and fixedly mounted on the pressure plate base, and multiple replaceable side plates arranged on the front and rear sides of the central fixed plate. At least one linear slide rail extending in the front-rear direction is provided on the front and rear sides of the pressure plate base. The replaceable side plates are slidably mounted on the linear slide rails and are connected to the pressure plate base by screws. Upper limit blocks and lower limit blocks are arranged on the inner pressure plate of the movable pressure plate. When it is necessary to adapt to other specifications of water-cooled plates, the inner pressure plate needs to be removed and replaced, and the replaceable side plates on the front and rear sides need to be added, removed, or replaced. The linear slide rails facilitate the installation of the replaceable side plates. Therefore, this pressure plate structure offers better flexibility and wider applicability.

[0009] In some embodiments, the base of the movable pressure plate is slidably mounted on the base plate via a slide rail slider mechanism.

[0010] In some embodiments, the bottom of the base plate is further provided with a pull-out mechanism, which includes a pull-out slide rail fixedly mounted on the frame and located below the base plate and extending in the front-rear direction, a pull-out slider slidably mounted on the pull-out slide rail, an end limiting block fixedly mounted on the frame and used to hold the front and rear sides of the base plate, and a rotary pressing cylinder fixedly mounted on the frame and used to hold the other front and rear sides of the base plate. The base plate is detachably fixedly mounted on the pull-out slider, and a pull-out handle is also provided on the base plate.

[0011] In some cases, it is necessary to replace or adjust components on the base plate, which requires pulling out the base plate and all the mechanisms on it together. A pull-out mechanism located under the base plate facilitates this replacement.

[0012] When it is necessary to remove the base plate, the rotating pressing cylinder will move in the opposite direction to release the pressure on the base plate, and the base plate and its various mechanisms will be pulled out together along the sliding rail for maintenance.

[0013] In some embodiments, the frame is further provided with at least one set of rollers spaced apart in the front-to-back direction and located below the base plate. The rollers facilitate sliding of the base plate.

[0014] This application also provides a differential pressure helium detector, which has the aforementioned differential pressure helium detection unit, characterized in that: it further includes a helium detector, wherein the helium filling machine is connected to a sealing mechanism for filling helium into the water-cooled plate and detecting whether the water-cooled plate has a leak.

[0015] As can be seen from the above technical solution, this application has at least the following advantages and positive effects:

[0016] This application discloses a differential pressure helium detection unit and a differential pressure helium detector. It employs a movable pressure plate that opens and closes from left to right, and a vertically positioned water-cooled plate. The vertical design of the fixed and movable pressure plates prevents particulate matter from accumulating on the sides, reducing damage to the water-cooled plate during the pressing process. Furthermore, upper and lower limit blocks are provided on the movable pressure plate. These blocks mechanically limit the pressure during pressing, preventing damage to the plate. Multiple upper and lower limit blocks also evenly distribute the pressure, preventing uneven stress that could damage the plate. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of this application;

[0018] Figure 2 This is a schematic diagram of the upper structure of an embodiment of this application;

[0019] Figure 3 This is a schematic diagram of the structure of the movable pressure plate in the embodiments of this application. Figure 1 ;

[0020] Figure 4 This is a schematic diagram of the structure of the movable pressure plate in the embodiments of this application. Figure 2 ;

[0021] Figure 5 This is a schematic diagram of the sealing assembly in an embodiment of this application;

[0022] Figure 6 This is a schematic diagram of the pull-out mechanism in the embodiments of this application;

[0023] Figure 7 This is a schematic diagram of the structure of the water-cooled plate in the embodiment of this application.

[0024] Labeling Explanation: 1. Base Plate; 11. Pull-out Handle; 2. Pressure Plate Mechanism; 21. Fixed Pressure Plate; 22. Movable Pressure Plate; 221. Pressure Plate Base; 222. Inner Pressure Plate; 223. Middle Fixed Plate; 224. Replaceable Side Plate; 225. Linear Slide Rail; 23. Pressure Plate Cylinder; 24. Upper Limit Block; 25. Lower Limit Block; 26. Slide Rail Slider Mechanism; 3. Sealing Assembly; 31. Sealing Frame; 32. Sealing Cylinder; 321. Movable Claw; 33. Sealing Cup; 331. Air Inlet; 4. Pull-out Mechanism; 41. Pull-out Slide Rail; 42. Pull-out Slider; 43. End Limit Block; 44. Rotary Press-down Cylinder; 45. Roller; 5. Water-cooled Plate; 51. Plate Body; 52. Current Collector; 521. Pipe Head. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this application clearer, the application will be described in further detail below with reference to the accompanying drawings. The terminology used in the embodiments section of this application is only for explaining specific embodiments and is not intended to limit the application.

[0026] See Figures 1 to 7 This application provides a differential pressure helium detection unit, including a base plate 1, a pressure plate mechanism 2 for pressing down the plate body 51 of the water-cooled plate 5, and a sealing mechanism for sealing the current collector 52 of the water-cooled plate 5. The pressure plate mechanism 2 includes a fixed pressure plate 21 fixedly mounted on the base plate 1 and extending in the front-back direction, a movable pressure plate 22 slidably connected to the base plate 1 in the left-right direction, and a pressure plate cylinder 23 for driving the movable pressure plate 22 to move left and right. On the side of the movable pressure plate 22 near the fixed pressure plate 21, there are multiple upper limit blocks 24 and lower limit blocks 25 spaced apart in the front-back direction. The upper limit blocks 24 are located above the lower limit blocks 25, and the plate body 51 is located between the upper limit blocks 24 and the lower limit blocks 25. When the movable pressure plate 22 moves towards the fixed pressure plate 21 under the drive of the pressure plate cylinder 23, it presses against the fixed pressure plate 21 through the upper limit blocks 24 and the lower limit blocks to prevent the fixed pressure plate 21 from damaging the plate body 51 of the water-cooled plate 5.

[0027] This differential pressure helium detector unit employs a movable pressure plate 22 that opens and closes from left to right, and a vertically positioned water-cooled plate 5. The vertical fixed pressure plate 21 and movable pressure plate 22 prevent particulate matter from easily remaining on the sides, reducing damage to the water-cooled plate 5 during the pressing process. Furthermore, the movable pressure plate 22 is equipped with an upper limit block 24 and a lower limit block 25, which mechanically limit the pressure during pressing, preventing damage to the plate 51. Moreover, multiple upper limit blocks 24 and lower limit blocks 25 evenly distribute the pressure, preventing uneven force distribution that could damage the plate 51.

[0028] The sealing mechanism includes two sealing components 3 respectively located on the front and rear sides of the pressure plate mechanism 2. Each sealing component 3 includes a sealing frame 31 fixedly mounted on the base plate 1, a sealing cylinder 32 fixedly mounted on the sealing frame 31, and two sealing cups 33. The sealing cylinder 32 has two movable claws 321 that can open and close to the left and right. The two sealing cups 33 are respectively fixedly mounted on the two movable claws 321. When the sealing cylinder 32 drives the two movable claws 321 to close, the two sealing cups 33 are respectively fitted onto the two pipe ends 521 of the collector 52 from both sides. Each sealing cup 33 is provided with an air inlet 331 for inflation. This air inlet 331 is connected to a helium detector.

[0029] Both the fixed pressure plate 21 and the movable pressure plate 22 include a pressure plate base 221 mounted on the base plate 1, an outer support plate fixedly mounted on the pressure plate base 221, and an inner pressure plate 222 detachably fixedly mounted on the inner side of the outer support plate for pressing down the plate body 51. The outer support plate includes a central fixed plate 223 located in the middle and fixedly mounted on the pressure plate base 221, and a plurality of replaceable side plates 224 arranged on the front and rear sides of the central fixed plate 223. At least one linear slide rail 225 extending in the front and rear direction is provided on the front and rear sides of the pressure plate base 221. The replaceable side plates 224 are slidably arranged on the linear slide rail 225. The replaceable side plates 224 are connected to the pressure plate base 221 by screws. The upper limit block 24 and the lower limit block 25 are arranged on the inner pressure plate 222 of the movable pressure plate 22. When it is necessary to adapt to other specifications of water-cooled plates 5, the inner pressure plate 222 needs to be removed and replaced, and the replaceable side plates 224 on the front and rear sides need to be added, removed or replaced. The linear slide rail 225 facilitates the installation of the replaceable side plates 224. Therefore, the pressure plate structure of this design has better flexibility and wider applicability.

[0030] The base 221 of the movable pressure plate 22 is slidably mounted on the base plate 1 via the slide rail slider mechanism 26.

[0031] The bottom of the base plate 1 is also provided with a pull-out mechanism 4. The pull-out mechanism 4 includes a pull-out slide rail 41 fixedly mounted on the frame and located below the base plate 1 and extending in the front-back direction, a pull-out slider 42 slidably mounted on the pull-out slide rail 41, an end limit block 43 fixedly mounted on the frame and used to hold the front and rear sides of the base plate 1, and a rotary pressing cylinder 44 fixedly mounted on the frame and used to hold the other front and rear sides of the base plate 1. The base plate 1 is detachably fixedly mounted on the pull-out slider 42, and a pull-out handle 11 is also provided on the base plate 1.

[0032] In some cases, it is necessary to replace or adjust the components above the base plate 1, so the base plate 1 and all the mechanisms on it need to be pulled out together. By setting a pull-out mechanism 4 under the base plate 1, the replacement can be easily carried out.

[0033] When it is necessary to remove the base plate 1, the rotating pressing cylinder 44 will move in the opposite direction to release the pressure on the base plate 1, and the base plate 1 and its various mechanisms will be pulled out together along the pull-out slide rail 41 for maintenance.

[0034] The frame is also equipped with at least one roller 45 spaced apart in the front-to-back direction and located below the base plate 1. The roller 45 facilitates the sliding of the base plate 1.

[0035] The following is a brief description of the working process and usage method of a differential pressure helium detection unit according to the above embodiments:

[0036] The water-cooled plate 5 is placed between the fixed pressure plate 21 and the movable pressure plate 22. The movable pressure plate 22, driven by the pressure plate cylinder 23, presses down on the plate body 51 of the water-cooled plate 5. The upper limit block 24 and the lower limit block 25 press against the fixed pressure plate 21. The two jaws of the sealing cylinders 32 at both ends close, carrying two sealing cups, and are fitted onto the two pipe ends 521 of the current collector 52, sealing the pipe ends 521. Helium is then introduced into the sealing cups, and helium is introduced into the water-cooled plate 5 for helium detection. During the detection process, the pressure plate cylinder 23 remains extended to prevent the plate body 51 from expanding and deforming. After the detection is completed, the sealing cylinder 32 and the pressure plate cylinder 23 reset, the movable pressure plate 22 opens, and the water-cooled plate 5 is removed.

[0037] This application embodiment also provides a differential pressure helium detector, which has the aforementioned differential pressure helium detection unit and further includes a helium detector. The helium filling machine is connected to the sealing mechanism and is used to fill the water-cooled plate 5 with helium gas and detect whether there is a leak in the water-cooled plate 5.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of this application, and are not intended to limit them; although the embodiments of this application have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A differential pressure helium leak detection unit characterized by: The utility model relates to a water cooling plate sealing device, including bottom plate (1), the pressing plate mechanism (2) for pressing the plate body (51) of water cooling plate (5) and the sealing mechanism for closing the current collector (52) of water cooling plate (5), the pressing plate mechanism (2) includes the fixed pressing plate (21) of fixed setting on bottom plate (1) and along the front and back direction extension setting, the movable pressing plate (22) of sliding connection on bottom plate (1) along left and right direction and the pressing plate cylinder (23) for driving movable pressing plate (22) left and right movement, the movable pressing plate (22) is close to the side of fixed pressing plate (21) side and is provided with a plurality of upper limit stopper (24) and lower limit stopper (25) along the front and back direction interval setting, upper limit stopper (24) is located the upper of lower limit stopper (25), and the plate body (51) is located between upper limit stopper (24) and lower limit stopper (25), when movable pressing plate (22) is driven to the direction close to fixed pressing plate (21) movement by upper limit stopper (24) and lower limit stopper (25) and is pressed against fixed pressing plate (21), to avoid fixed pressing plate (21) and press the broken plate body (51) of water cooling plate (5).

2. A differential pressure helium leak detection unit according to claim 1, wherein: The sealing mechanism includes two sealing assemblies (3) arranged on the front and back sides of the pressing plate mechanism (2), respectively, the sealing assembly (3) includes a sealing rack (31) fixedly arranged on the bottom plate (1), a sealing cylinder (32) fixedly installed on the sealing rack (31), and two sealing cups (33); the sealing cylinder (32) has two movable claws (321) that can open and close left and right, and the two sealing cups (33) are fixedly installed on the two movable claws (321), respectively; when the sealing cylinder (32) drives the two movable claws (321) to close and move, the two sealing cups (33) are respectively sleeved into the two pipe heads (521) of the current collector (52) from both sides; the sealing cup (33) is provided with an air inlet (331) for inflating.

3. A differential pressure helium leak detection unit according to claim 1, wherein: The fixed pressing plate (21) and the movable pressing plate (22) each include a pressing plate base (221) installed on the bottom plate (1), an outer support plate fixedly installed on the pressing plate base (221), and an inner pressing plate (222) fixedly installed on the inner side of the outer support plate and used for pressing the plate body (51); the outer support plate includes a middle fixed plate (223) located in the middle and fixedly installed on the pressing plate base (221), and a plurality of replaceable side plates (224) arranged on the front and back sides of the middle fixed plate (223); the front and back sides of the pressing plate base (221) are provided with at least one straight slide rail (225) extending in the front and back directions; the replaceable side plates (224) are slidingly arranged on the straight slide rails (225); the replaceable side plates (224) are connected to the pressing plate base (221) by screws; and the upper limit stopper (24) and the lower limit stopper (25) are arranged on the inner pressing plate (222) of the movable pressing plate (22).

4. A differential pressure helium leak detection unit according to claim 3, wherein: The pressing plate base (221) of the movable pressing plate (22) is slidingly installed on the bottom plate (1) by a slide rail and block mechanism (26).

5. The differential pressure helium leak detection unit of claim 1, wherein: The bottom of the bottom plate (1) is further provided with a pulling mechanism (4), the pulling mechanism (4) comprises a pulling slide rail (41) fixedly arranged on the frame and extending in the front-rear direction below the bottom plate (1), a pulling slide block (42) slidingly arranged on the pulling slide rail (41), end limiting blocks (43) fixedly arranged on the frame and used for abutting against the front-rear sides of the bottom plate (1), and rotary downward pressing air cylinders (44) fixedly arranged on the frame and used for abutting against the other front-rear sides of the bottom plate (1), the bottom plate (1) is detachably and fixedly arranged on the pulling slide block (42), and the bottom plate (1) is further provided with a pulling handle (11).

6. A differential pressure helium leak detection unit according to claim 5, wherein: At least one roller (45) is further arranged on the frame and spaced apart in the front-rear direction below the bottom plate (1).

7. A differential pressure helium leak detector having a differential pressure helium leak detection unit as claimed in any one of claims 1 to 6, characterised in that: A helium filling machine is further arranged and connected with the sealing mechanism, which is used for filling helium into the water-cooled plate (5) and detecting whether the water-cooled plate (5) leaks.

Images