Universal airtightness detection tool for upper cover of power battery box body of new energy automobile

Abstract

The invention discloses a new energy automobile power battery box upper cover general airtightness detection tool comprising a base, the top of the base is provided with a base layer plate, the top of the base layer plate is used for placing a battery box upper cover, the periphery of the base layer plate is provided with circumferential pressing assemblies, and the circumferential pressing assemblies are used for pressing the battery box upper cover to the top of the base layer plate. A first sliding rail is arranged at the front end of the base in the length direction, a first sliding block is installed on the first sliding rail in a sliding mode, the circumferential pressing assembly at the front end of the base layer plate is fixedly installed on the first sliding block, and the circumferential pressing assembly at the front end of the base layer plate can be driven to be close to or away from the base layer plate by driving the first sliding block to slide on the first sliding rail. The tool has the beneficial effects that the circumferential pressing assembly on one side is installed in a sliding mode, self-adaptive adjustment can be conducted on all battery box body upper covers with the same width but different lengths, then the situation that one product can only correspond to one tool is avoided, and the production and manufacturing period and cost are effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicle batteries, and in particular to a universal airtightness detection tool for an upper cover of a power battery box of a new energy vehicle. Background Art

[0002] As one of the important components of new energy vehicles, new energy batteries can directly provide a source of power for new energy vehicles. Therefore, the quality of the battery can directly affect the overall usability of the vehicle. In terms of physical structure, new energy batteries are composed of a battery box and battery packs stacked inside the battery box. In order to ensure the safe and stable use of the entire battery, the sealing of the battery box is very important, and the sealing of the entire battery box is mainly determined by the battery box cover. Therefore, the battery box cover needs to be tested for airtightness before it is put into use.

[0003] In the prior art, the air tightness test of the battery box cover is mainly carried out by opening a groove on the base plate, embedding a sealing strip in the groove, placing the cover in the groove and pressing it with a cylinder, and finally ventilating the groove to judge the air tightness of the cover by measuring the air pressure value data. However, there are many types of new energy vehicles at present, and the corresponding cover specifications and models are also different, which means that each type of cover needs to design and customize an air tightness test tool, which not only prolongs the entire production design cycle, but also increases production costs. Summary of the invention

[0004] In view of this, the present invention provides a universal airtightness detection tool for the upper cover of a power battery box of a new energy vehicle, which is intended to be adaptable to tooling for various types of upper covers, thereby reducing production costs and processing time.

[0005] To achieve the above purpose, the technical solution of the present invention is as follows:

[0006] A universal airtightness detection tool for the upper cover of a power battery box of a new energy vehicle comprises a base, a base plate is provided on the top of the base, the top of the base plate is used to place the upper cover of the battery box, and circumferential clamping components are provided all around the base plate. The circumferential clamping components are used to press the upper cover of the battery box on the top of the base plate, and are characterized in that a first slide rail is provided at the front end in the length direction of the base, a first slider is slidably mounted on the first slide rail, and the circumferential clamping component at the front end of the base plate is fixedly mounted on the first slider. Driving the first slider to slide on the first slide rail can force the circumferential clamping component at the front end of the base plate to approach or move away from the base plate.

[0007] By adopting the above structure, the circumferential clamping assembly on one side is slidably installed, and adaptive adjustment can be performed for each battery box cover with the same width but different length dimensions, thereby avoiding that one product can only correspond to one tooling, effectively reducing the production cycle and cost.

[0008] Preferably, the circumferential clamping assembly includes a first cylinder arranged vertically, a connecting seat is provided at the end of the cylinder rod of the first cylinder, the connecting seat is rotatably connected to a rotating rod, a first pressing plate is provided at the far end of the rotating rod, a first mounting seat is provided on the first cylinder, a guide rod is rotatably connected between the first mounting seat and the rotating rod, the first cylinder is lifted, which can force the rotating rod to rotate and make the first pressing plate press the upper cover of the battery box downward. The above structure can make the upper cover of the battery box close to the base plate in the circumferential direction, thereby facilitating the airtightness detection of the upper cover of the battery box.

[0009] As a preference: it also includes a top pressing assembly, which includes a crossbeam placed horizontally in the width direction of the base, a second cylinder is provided on the crossbeam, and a second pressing plate is provided at the lower end of the cylinder rod of the second cylinder. Driving the second cylinder can force the second pressing plate to press down the upper cover of the battery box; both ends of the crossbeam are provided with downwardly extending mounting columns, and the mounting columns at both ends are slidably assembled on the base; there are multiple top pressing assemblies, which are arranged along the length direction of the base. The above structure can prevent the upper cover from bulging and deforming during inflation.

[0010] Preferably, the base is provided with second slide rails along the length direction on both sides, and the two second slide rails are provided with second sliders, and the mounting column is fixedly arranged on the top of the second sliders. The above structure can ensure that the top pressing assembly can be slidably installed, and the operation is very convenient.

[0011] Preferably, a positioning structure is provided between the top pressing assembly at the front end and the base, and a connecting rod is provided between any two adjacent top pressing assemblies. With the above structure, the top pressing assembly can be better positioned and installed through the positioning structure, and the connecting rod can ensure that the top pressing assembly is evenly distributed on the top of the battery box cover to avoid bulging on the battery box cover.

[0012] Preferably, the positioning structure comprises a positioning block arranged at the front end of the second slide rail, a positioning hole is arranged at the top of the positioning block, a positioning rod extending forward is installed on the second slide block at the front end of the second slide rail, a spring pin is vertically arranged at the front end of the positioning rod, and the bottom of the spring pin can be inserted into the positioning hole. With the above structure, the second slide block can be positioned and locked, and the second slide block can be effectively prevented from sliding when the top pressing assembly presses the top of the upper cover.

[0013] Preferably, the base plate is provided with a plurality of rectangular annular grooves, each of which has a different length but the same width and shares a wide side, and a sealing strip is provided in the annular groove, the upper end of which protrudes beyond the top of the base plate, and the battery box upper cover is circumferentially close to the top of the sealing strip. The above structure can ensure the sealing between the upper cover and the base plate in the circumferential direction, thereby ensuring the accuracy of the detection, and can also adapt to battery box upper covers of various lengths.

[0014] Preferably, a third cylinder is provided at the front end of the base, and the cylinder rod of the third cylinder is connected to the first slider. Driving the third cylinder can force the first slider to slide on the first slide rail. A buffer block and a first limit block are provided at the position of the base near the rear end of the first slide rail. With the above structure, the circumferential clamping assembly at the front end of the base can automatically adjust the distance with the base plate, and the buffer block and the first limit block can also play a role in buffering and limiting the sliding of the first slider.

[0015] Preferably, the side of the base is provided with an adjustment component, the adjustment component is connected to the air pipe of the third cylinder, and the adjustment component has a knob, and turning the knob can control the extension or retraction of the cylinder rod of the third cylinder. The above structure can realize the switching of product models.

[0016] Preferably, a second limiting block is provided on the top of the base plate in the circumferential direction, and the second limiting block is used to limit the upper cover of the battery box. The above structure can facilitate the positioning and placement of the upper cover of the battery box.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The universal airtightness detection tooling for the upper cover of the power battery box of a new energy vehicle provided by the present invention can be used to slide the circumferential clamping assembly on one side, so that adaptive adjustment can be performed for each battery box upper cover with the same width but different lengths, thereby avoiding that only one product can correspond to one tooling, and effectively reducing the production cycle and cost.

[0019] 2. There are multiple groups of top pressing components, which slide back and forth on the slide rails through sliders. While facilitating the operation of the staff, the corresponding number of top pressing components can be selected according to the specific size of the battery box cover, thereby ensuring that the top of the battery box cover will not bulge or deform during the air tightness test.

[0020] 3. The top pressing assembly is positioned through positioning holes and spring pins, with high positioning accuracy and convenient operation for staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1It is a schematic diagram of the three-dimensional structure of the universal airtightness detection tooling for the upper cover of the battery box;

[0022] Figure 2 This is a schematic diagram of the structure of the universal airtightness detection tooling for the upper cover of the battery box (top view);

[0023] Figure 3 To show the structural diagram of the rear end of the air tightness test tooling;

[0024] Figure 4 It is a structural schematic diagram of the circumferential pressing assembly 3;

[0025] Figure 5 is a cross-sectional schematic diagram of the airtight tooling;

[0026] Figure 6 for Figure 5 A partial enlarged view of middle A;

[0027] Figure 7 A structural diagram showing the installation position of the third cylinder 9;

[0028] Figure 8 is a structural schematic diagram of the positioning structure;

[0029] Fig. 9 A schematic diagram showing the structure of the base plate 2;

[0030] Fig.10 A schematic diagram showing the structure of the stacking method of the second pressing plate 6f;

[0031] Fig.11 It is a structural schematic diagram showing the arrangement of the first slide rail 4. DETAILED DESCRIPTION

[0032] The present invention is further described below in conjunction with embodiments and drawings.

[0033] The directional words used in this embodiment are all Figure 1 The direction indicated by the coordinate system shall prevail.

[0034] like Figure 1 , Figure 2 and Figure 5As shown, a universal airtightness detection tool for the upper cover of the power battery box of a new energy vehicle includes a base 1, a base plate 2 is fixedly installed on the top of the base 1, the top of the base plate 2 is used to place the upper cover 17 of the battery box, and an air inlet 2b is opened in the middle position of the bottom of the base plate 2. After the upper cover 17 of the battery box is fixedly covered on the base plate 2, the enclosed space formed between the base plate 2 and the upper cover 17 of the battery box is ventilated into the enclosed space through the air inlet 2b, so that the airtightness detection of the upper cover 17 of the battery box can be realized. Circumferential clamping components 3 are installed around the base plate 2. In this embodiment, nine circumferential clamping components 3 are installed on the left and right sides of the base plate 2, and five circumferential clamping components 3 are installed on the front and rear ends of the base plate 2. Each circumferential clamping component 3 is used to press the circumferential edge of the upper cover 17 of the battery box against the top of the base plate 2.

[0035] like Figure 1 and Fig.11 As shown, in the present embodiment, five first slide rails 4 are fixedly installed at the front end of the base 1, the five first slide rails 4 are parallel to each other and arranged along the front-to-back direction of the base 1, and a first slider 5 is slidably installed on each first slide rail 4. The five first sliders 5 are connected as a whole through a connecting plate 18, and the five circumferential clamping assemblies 3 located at the front end of the base plate 2 are fixedly installed on the connecting plate 18 through a second mounting seat 19 respectively. By driving the first slider 5 to slide on the first slide rail 4, the circumferential clamping assembly 3 at the front end of the base plate 2 can be driven to approach or move away from the base plate 2.

[0036] With such a design, for a battery case cover 17 with a generally consistent structure and width but inconsistent length dimensions, it is only necessary to slide the first slider 5 forward and backward to move the circumferential clamping assembly 3 at the front end of the base plate 2 to a position that is compatible with the length dimension of the battery case cover 17. This ensures that the battery case cover 17 is circumferentially pressed against the top of the base plate 2, thereby facilitating airtightness testing of the battery case cover 17. Compared with the traditional method in which one product can only correspond to one tooling, this effectively reduces the production cycle and cost.

[0037] like Figure 4As shown, the circumferential clamping assembly 3 includes a first cylinder 3a fixedly mounted on the base 1, the first cylinder 3a is arranged vertically, a connecting seat 3b is fixedly mounted on the end of the cylinder rod of the first cylinder 3a, a rotating rod 3c is rotatably mounted on the top of the connecting seat 3b, a first pressing plate 3d is fixedly mounted on the far end of the rotating rod 3c, a first mounting seat 3e is also fixedly mounted on the top of the cylinder body of the first cylinder 3a, and a guide rod 3f is rotatably connected between the first mounting seat 3e and the rotating rod 3c. When the first cylinder 3a is lifted, it is restricted by the guide rod 3f, which can force the rotating rod 3c to rotate toward the side of the base plate 2, and make the first pressing plate 3d press down the edge of the battery box cover 17, thereby ensuring that the base plate 2 and the battery box cover 17 can fit tightly, which is convenient for the air tightness detection of the battery box cover 17.

[0038] like Figure 3 As shown, the airtightness detection tooling also includes a top pressing assembly 6, which includes a crossbeam 6d placed horizontally in the width direction of the base 1, and a second cylinder 6e is fixedly installed on the crossbeam 6d. In this embodiment, two second cylinders 6e are fixedly installed on the crossbeam 6d, and the lower end of the cylinder rod of each second cylinder 6e is fixedly installed with a second pressing plate 6f. Driving the second cylinder 6e can force the second pressing plate 6f to press the battery box cover 17 downward. Both ends of the crossbeam 6d are provided with downwardly extending mounting columns 6c, and the mounting columns 6c at both ends are slidably assembled on the base 1. In this embodiment, the base 1 is formed with second slide rails 6a on both sides along the length direction, and the two second slide rails 6a are slidably assembled with second sliders 6b, and the mounting columns 6c are fixedly installed on the top of the second slider 6b. In addition, in this embodiment, eight groups of top pressing assemblies 6 are provided, which are arranged along the length direction of the base 1, and eight second sliders 6b are slidably assembled on the corresponding single second slide rail 6a. Such a design can prevent the top of the battery box upper cover 17 from bulging during the airtightness test. At the same time, a corresponding number of second sliders 6b can be selected according to the battery box upper covers 17 of different sizes to ensure that the top of the battery box upper cover 17 can be covered by the second pressing plate 6f, thereby preventing the top of the battery box upper cover 17 from bulging.

[0039] like Figure 5 and Fig.10 As shown, in this embodiment, the mounting column 6c installed on the second slider 6b on the same side is in an undulating posture. Such a design can ensure that when the second cylinder 6e contracts, the second pressure plates 6f are stacked and placed to avoid mutual interference.

[0040] Further, such as Figure 8As shown, a positioning structure is installed between the top pressing assembly 6 at the front end and the base 1, and the positioning structure includes a positioning block 13 fixedly installed at the front end of the second slide rail 6a, and a positioning hole 13a is formed on the top of the positioning block 13. A positioning rod 14 extending forward is installed on the second slider 6b at the front end of the second slide rail 6a, and a spring pin 15 is vertically installed at the front end of the positioning rod 14, and the bottom of the spring pin 15 can be inserted into the positioning hole 13a. Such a design can position and lock the second slider 6b, and effectively prevent the second slider 6b from sliding when the top pressing assembly 6 presses the top of the battery box cover 17.

[0041] like Figure 3 As shown, any two adjacent top pressing assemblies 6 are connected by a connecting rod 7, and the second sliders 6b can be evenly arranged by the connecting rod 7. In this embodiment, the connecting rods 7 are alternately arranged on both sides of the base 1 to ensure that only one connecting rod 7 is connected to the same second slider 6b.

[0042] like Figure 5 , Figure 6 and Fig. 9 As shown, a plurality of rectangular annular grooves 2a are formed on the top of the base plate 2. The lengths of the annular grooves 2a are different but the widths are the same and they share a wide side. A sealing strip 8 is installed in the annular groove 2a. The upper end of the sealing strip 8 protrudes beyond the top of the base plate 2. The circumference of the battery box cover 17 is in close contact with the top of the sealing strip 8. The sealing strip 8 can further ensure that the base plate 2 and the battery box cover 17 are closely fitted, and different annular grooves 2a correspond to battery box covers 17 of different lengths. A filler 23 is also installed on the top of the base plate 2. The filler 23 can support the middle position of the battery box cover 17.

[0043] In addition, if Figure 6 and Fig. 9 As shown, a second limiting block 16 is fixedly installed on the top circumference of the base plate 2. The second limiting block 16 is used to limit the battery box cover 17 and also facilitates the positioning and installation of the battery box cover 17.

[0044] like Figure 7 and Fig.11As shown, a third cylinder 9 is also fixedly installed at the front end of the base 1. The third cylinder 9 is arranged in parallel with the first slide rail 4, and the cylinder rod of the third cylinder 9 is connected to the connecting plate 18. Driving the third cylinder 9 can force the first slider 5 to slide on the first slide rail 4, thereby adapting to the air tightness detection of the battery box cover 17 of different lengths. A buffer block 10 and a first limit block 11 are provided at the rear end of the base 1 near the first slide rail 4. The buffer block 10 can prevent the first slider 5 from sliding too fast and damaging the equipment, and the first limit block 11 can limit the sliding of the first slider 5. In this embodiment, the buffer block 10 is fixedly installed on the oil pressure buffer, and the first limit block 11 is a travel switch.

[0045] For example Figure 7 As shown, an adjustment component 12 is fixedly installed on the side of the base 1. The adjustment component 12 is connected to the third cylinder 9 through an air pipe. A knob 12a is provided on the top of the adjustment component 12. By turning the knob 12a, the cylinder rod of the third cylinder 9 can be controlled to extend or retract, thereby realizing the switching of the product model. In this embodiment, the adjustment component 12 is a solenoid valve.

[0046] like Figure 2 and Figure 3 As shown, a regulating valve 20 and a solenoid valve 21 are fixedly installed at the rear end of the base 1, wherein the regulating valve 20 is used to adjust the air intake of the entire tooling, and the solenoid valve 21 is used to control the extension and retraction of each cylinder, and an operating box 22 is fixedly installed on the front end side of the base 1, through which each cylinder can be easily operated.

[0047] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, ordinary technicians in this field can make various similar expressions without violating the purpose and claims of the present invention, and such changes all fall within the scope of protection of the present invention.

Claims

1. A universal airtightness detection tool for the upper cover of a power battery box of a new energy vehicle, comprising a base (1), a base plate (2) is provided on the top of the base (1), the top of the base plate (2) is used to place the upper cover of the battery box, and a circumferential pressing component (3) is provided around the base plate (2), and the circumferential pressing component (3) is used to press the upper cover of the battery box onto the top of the base plate (2), characterized in that: A first slide rail (4) is provided at the front end in the length direction of the base (1), a first slider (5) is slidably mounted on the first slide rail (4), a circumferential clamping assembly (3) at the front end of the base plate (2) is fixedly mounted on the first slider (5), and the first slider (5) is driven to slide on the first slide rail (4), so that the circumferential clamping assembly (3) at the front end of the base plate (2) can be forced to move closer to or away from the base plate (2).

2. The universal airtightness detection tool for the upper cover of the power battery box of a new energy vehicle according to claim 1 is characterized in that: The circumferential clamping assembly (3) includes a first cylinder (3a) arranged vertically, a connecting seat (3b) being provided at the end of the cylinder rod of the first cylinder (3a), the connecting seat (3b) being rotatably connected to a rotating rod (3c), a first pressing plate (3d) being provided at the far end of the rotating rod (3c), a first mounting seat (3e) being provided on the first cylinder (3a), a guide rod (3f) being rotatably connected between the first mounting seat (3e) and the rotating rod (3c), the first cylinder (3a) being lifted to force the rotating rod (3c) to rotate, and the first pressing plate (3d) pressing down the upper cover of the battery box.

3. The universal airtightness detection tool for the upper cover of the power battery box of a new energy vehicle according to claim 1 is characterized in that: It also includes a top pressing assembly (6), which includes a crossbeam (6d) arranged horizontally in the width direction of the base (1), a second cylinder (6e) being provided on the crossbeam (6d), a second pressing plate (6f) being provided at the lower end of the cylinder rod of the second cylinder (6e), and driving the second cylinder (6e) can force the second pressing plate (6f) to press the upper cover of the battery box downward; downwardly extending mounting columns (6c) are provided at both ends of the crossbeam (6d), and the mounting columns (6c) at both ends are slidably assembled on the base (1); there are multiple top pressing assemblies (6), which are arranged along the length direction of the base (1).

4. The universal airtightness detection tool for the upper cover of the power battery box of a new energy vehicle according to claim 3 is characterized in that: Second slide rails (6a) are provided on both sides of the base (1) along the length direction, and second sliding blocks (6b) are provided on the two second slide rails (6a), and the mounting column (6c) is fixedly arranged on the top of the second sliding block (6b).

5. The universal airtightness detection tool for the upper cover of the power battery box of a new energy vehicle according to claim 4 is characterized in that: A positioning structure is provided between the top pressing assembly (6) located at the front end and the base (1), and a connecting rod (7) is provided between any two adjacent top pressing assemblies (6).

6. The universal airtightness detection tool for the upper cover of the power battery box of a new energy vehicle according to claim 5 is characterized in that: The positioning structure comprises a positioning block (13) arranged at the front end of the second slide rail (6a), a positioning hole (13a) is arranged at the top of the positioning block (13), a positioning rod (14) extending forward is installed on the second sliding block (6b) located at the front end of the second slide rail (6a), a spring pin (15) is vertically arranged at the front end of the positioning rod (14), and the bottom of the spring pin (15) can be inserted into the positioning hole (13a).

7. The universal airtightness detection tool for the upper cover of the power battery box of a new energy vehicle according to claim 1 is characterized in that: The base plate (2) is provided with a plurality of rectangular annular grooves (2a), each of which has a different length but the same width and shares a common wide side. A sealing strip (8) is provided in the annular groove (2a), the upper end of the sealing strip (8) protrudes beyond the top of the base plate (2), and the upper cover of the battery box body is circumferentially close to the top of the sealing strip (8).

8. The universal airtightness detection tool for the upper cover of the power battery box of a new energy vehicle according to claim 1 is characterized in that: A third cylinder (9) is provided at the front end of the base (1), and a cylinder rod of the third cylinder (9) is connected to the first slider (5). By driving the third cylinder (9), the first slider (5) can be forced to slide on the first slide rail (4). The base (1) is provided with a buffer block (10) and a first limit block (11) at a position close to the rear end of the first slide rail (4).

9. The universal airtightness detection tool for the upper cover of the power battery box of a new energy vehicle according to claim 8, characterized in that: The base (1) is provided with an adjustment component (12) on the side thereof. The adjustment component (12) is connected to the air pipe of the third cylinder (9). The adjustment component (12) has a knob (12a). By rotating the knob (12a), the cylinder rod of the third cylinder (9) can be controlled to extend or retract.

10. The universal airtightness detection tool for the upper cover of the power battery box of a new energy vehicle according to claim 1, characterized in that: A second limiting block (16) is provided in the circumferential direction of the top of the base plate (2), and the second limiting block (16) is used to limit the upper cover of the battery box.

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