CN110864850A - Battery box pressure test leak hunting frock - Google Patents
Battery box pressure test leak hunting frock Download PDFInfo
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- CN110864850A CN110864850A CN201810981380.XA CN201810981380A CN110864850A CN 110864850 A CN110864850 A CN 110864850A CN 201810981380 A CN201810981380 A CN 201810981380A CN 110864850 A CN110864850 A CN 110864850A
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- base
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
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- Examining Or Testing Airtightness (AREA)
Abstract
The invention relates to a battery box pressure test leak detection tool, which comprises a base, wherein a sealing structure which is used for being in corresponding sealing fit with the edge of a reversed box body or a box cover to be detected is arranged on the base, an air inlet interface which is connected with a leak detection instrument is arranged below the base, a pressing device is also arranged on the base, the pressing device comprises a plurality of pressing rods which are hinged on the base and pressing structures which are arranged on the pressing rods and used for fixedly pressing and installing the box body or the box cover to be detected on the base, and the pressing rods are provided with an upward swinging avoiding stroke and locking positions which can be oppositely fixed on the base. When the tool provided by the invention is used for carrying out pressure test leak detection on the box body or the box cover, the box body or the box cover to be detected is buckled on the base, and when the compression rod is in the locking position, the box body or the box cover to be detected is compressed on the base through operating the compression structure, so that the sealing property of the box body can be ensured.
Description
Technical Field
The invention relates to a pressure test leak detection tool for a battery box.
Background
Pure electric vehicles adopts power battery to provide drive energy, and the battery box includes box and case lid, and box and case lid adopt sealed cooperation to avoid in the power battery working process, intaking in the box leads to the short circuit, so box and case lid must carry out the pressure testing leak hunting after the processing is accomplished. In current box and case lid pressure testing leak hunting process, pass through bolted connection with box and case lid, the centre adds sealed pad, the lateral part opening of box passes through the screw and is connected with sealing washer and pressure testing shrouding, because the box is bulky, for guaranteeing sealing performance, the connecting bolt of box and case lid reaches 51, before the pressure testing leak hunting, need tighten the bolt one by one, then let in the compressed air of certain pressure to the box through the interface of admitting air of establishing on box lateral part pressure testing shrouding, then close the inlet valve, judge whether the sealing performance of box and case lid is intact through the leak hunting instrument, after the pressure testing is accomplished, pull down the bolt one by one again. In the pressure test leak hunting process of single battery box, need tighten, loosen the bolt number of times and reach hundreds of times, cause the pressure test leak hunting time of single battery box long, the process is loaded down with trivial details, seriously influences the production efficiency of battery box, can't satisfy the demand of volume production.
Disclosure of Invention
The invention aims to provide a battery box pressure test leak detection tool, which aims to solve the technical problems of long battery box pressure test leak detection time and complex process in the prior art.
In order to achieve the purpose, the technical scheme of the pressure test leak detection tool for the battery box is as follows: the battery box pressure test leak detection tool comprises a base, wherein a buckling area matched with a box body or a box cover to be detected is arranged on the base, a sealing structure matched with the edge of the box body or the box cover to be detected in a corresponding sealing mode is arranged at the buckling area, an air inlet is further arranged at the buckling area and connected with a leak detection instrument, a pressing device is further arranged on the base and comprises a plurality of pressing rods hinged to the base through hinged shafts, pressing structures used for fixedly pressing the box body or the box cover to be detected in the buckling area are respectively arranged on each pressing rod, the pressing rods have upward swinging avoiding strokes and can be fixedly assembled on locking positions on the base in a relative mode, through holes are formed in the sides of the corresponding hinged shafts on the pressing rods, a pin shaft used for penetrating through the through holes is arranged on the pressing rods, and a blocking structure matched with the pin shaft for blocking the pressing rods to fix the pressing rods on the locking positions is arranged on.
The invention has the beneficial effects that: when the pressure test leak detection tool for the battery box is used for carrying out pressure test leak detection on the box body or the box cover to be detected, the box body or the box cover to be detected is placed on the base in a sealed buckling mode, the compression rod is operated to be located at the locking position, the box body or the box cover to be detected is compressed on the base through the compression structure, the sealing performance of the box body or the box cover to be detected can be guaranteed, compressed air is filled into the box body or the box cover to be detected, the sealing performance of the box body or the box cover is judged through a leak detection instrument, the pressure test leak detection time of the battery box is shortened through the pressure test leak detection tool, the pressure test leak detection process is relatively simple, the production efficiency of.
Furthermore, a fixing rod is arranged on the base, and the stopping structure is a fixing hole which is formed in the fixing rod and used for correspondingly penetrating through the through hole of the pressing rod so as to allow the pin shaft to be inserted. The pin shaft is positioned in the through hole of the pressure lever, and the pin shaft penetrates into the fixing hole in the fixing rod to fix the pin shaft, so that the pressure lever is fixed on the locking position.
Furthermore, the fixed rod and the pressure rod are arranged along the axial direction of the pin shaft in a staggered mode. The avoidance structure of the avoidance pressing rod swinging around the hinge point is not required to be arranged on the fixing rod, and when the compression structure compresses the box body or the box cover to be detected, the stress at the position of the fixing hole on the fixing rod is easy to deform, the fixing rod arranged in a staggered mode with the pressing rod is beneficial to improving the strength of the fixing rod, and the possibility of deformation at the position of the fixing hole is reduced.
Further, the through hole of the pressing rod and the pressing structure are positioned at two sides of the corresponding hinge shaft. When the compaction structure compresses the box body or the box cover to be detected, the structural form that the fixed rod is positioned on the other side of the hinged shaft on the pressing rod is compared with the structural form that the fixed rod and the through hole are positioned on the same side of the hinged shaft on the pressing rod, and the stress of the position of the fixed hole on the fixed rod is smaller.
Furthermore, the compression structure comprises a vertical screw rod in threaded fit with the compression rod, and a top pressing block arranged at the lower end of the vertical screw rod and used for jacking the box body or the box cover to be detected. The position of the top pressing block arranged at the end part of the vertical screw rod is changed by rotating the vertical screw rod to press the box body or the box cover to be tested, and the pressing structure is simple in structure and convenient to operate.
Further, the battery box pressure test leak detection tool further comprises at least one group of limiting structures which are arranged on two sides in the horizontal direction relatively, so that the box body or the box cover can be positioned in the horizontal direction. The displacement of the box body or the box cover to be detected in the horizontal direction is limited, the sealing stability of the box body or the box cover to be detected is guaranteed, and the detection error is reduced.
Furthermore, limit structure includes that screw-thread fit assembles horizontal screw rod on the base and be located the side briquetting that horizontal screw rod tip is used for the side pressure box or the case lid that awaits measuring. The position of a pressing block arranged at the side of the end part of the transverse screw is changed by rotating the transverse screw to limit the displacement of the box body or the box cover to be detected in the horizontal plane direction, and the limiting structure is simple and convenient to operate.
Furthermore, the base is provided with support rods corresponding to the pressure rods, each pressure rod is hinged on the corresponding support rod to be hinged on the base, and the transverse screw is assembled on the support rod in a threaded manner. The assembly structure and the assembly form reduce the number of parts, so that the whole tool structure is relatively compact.
Further, the sealing structure is an annular sealing strip fixed on the base. The sealing strip is fixed on the base, and the sealing performance between the base and the box body or the box cover to be tested is ensured.
Drawings
FIG. 1 is a front view of a particular embodiment of a battery box pressure test leak detection tool provided by the present invention;
FIG. 2 is a left side view of a particular embodiment of a battery box pressure test leak detection tool provided by the present invention;
FIG. 3 is a top view of a particular embodiment of a battery box pressure test leak detection tool provided by the present invention;
in the figure: the device comprises a base 1, a lateral pressure block 2, a lateral pressure operating handle 31, a top pressure operating handle 3, a top pressure block 4, a pressure rod 5, a sealing strip 6, a pin shaft 7, a first pressure testing sealing plate 8, a first sealing ring 9, a second pressure testing sealing plate 10, a second sealing ring 11, an air inlet connector 12, a compression structure 13, a top pressure nut 14, a limiting structure 15, a fixing rod 17, a support rod 18, a leak detector 19, an air inlet valve 20 and a compressed air supply device 21.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
The specific embodiment of the pressure test leak detection tool for the battery box comprises a base 1, wherein a buckling area matched with a box body to be detected is arranged on the upper surface of the base 1, a sealing structure matched with the edge of the box body to be detected is adhered to the buckling area, the sealing structure is specifically a sealing strip 6, and in other embodiments, the sealing device is a sealing plate. The air inlet interface 12 connected through a fastener is arranged at the position, corresponding to the buckling area, on the lower surface of the base 1, in the embodiment that the sealing device is a sealing plate, an opening is also formed in the corresponding position on the sealing plate and used for filling compressed air into the box body to be tested, the other end of an air inlet pipe connected with the air inlet interface 12 is connected with a compressed air supply device 21 and an air inlet valve 20, and a leak detector 19 is further connected to the air inlet pipe and used for detecting the sealing performance of the box body to be tested.
Set up bracing piece 18 on the base 1, depression bar 5 passes through the articulated assembly at the tip of this bracing piece 18 of articulated shaft, depression bar 5 has wobbling stroke around its articulated shaft, one of them end at depression bar 5 has seted up the perforation, still be equipped with dead lever 17 on the base 1, dead lever 17 and the bracing piece 18 that is equipped with depression bar 5 are along round pin axle perforation axial dislocation arrangement, it has the fixed orifices to open on this dead lever 17, round pin axle 7 passes the perforation on this fixed orifices and depression bar 5, can restrict the swing of depression bar 5 around its pin joint, make depression bar 5 rigidity, this fixed position is the locking position of depression bar 5 promptly. The fixing hole is a stop structure which is in stop fit with the pin shaft 7 to limit the pressing rod 5 to swing in a vertical plane, a pressing structure 13 used for pressing the box body to be tested on the base 1 is arranged at the other end of the pressing rod 5, and the pressing rod 5 and the pressing structure 13 form a pressing device of the whole battery box pressure test leak detection tool so as to ensure the sealing performance of the whole box body to be tested at the top opening. In other embodiments, the stopping structure may be an arched through hole disposed on the base, and the through hole is used for placing a pin shaft penetrating through the through hole of the pressing rod to limit the pressing rod from swinging in the vertical direction, and the pressing rod is in a non-linear structure.
In this embodiment, the box structure to be tested is a cuboid, eight groups of support rods 18 and the press rods 5 hinged thereto are symmetrically arranged on the base 1 on the side portion of the long side face of the box to be tested at equal intervals, the press rods 5 are operated to enable the inner side end portions of the press rods 5 provided with the compression structures 13 to swing and lift up, the box to be tested is convenient to place, the lifted swing stroke is the avoidance stroke of opening of the press rods, the perforation holes matched with the pin shafts 7 on the press rods 5 and the ends provided with the compression structures 13 are respectively located on two sides of the articulated shafts on the press rods, in other embodiments, the perforation holes and the ends provided with the compression structures are located on the same side of the articulated shafts, the compression structure setting ends of the press rods are enabled to have larger lifting strokes, the box to be tested is convenient to place, but compared with the scheme, the stress at the fixing.
In this embodiment, the pressing structure 13 includes a vertical screw and a screw portion located on the pressing rod 5 and matched with the vertical screw, the vertical screw penetrates through the unthreaded hole on the pressing rod 5 from one side and is in internal thread fit with a top pressing nut 14 on the other side of the unthreaded hole, two ends of the vertical screw are respectively in threaded connection with a top pressing operating handle 3 and a top pressing block 4, the top pressing block 4 is in contact with the bottom of the box body to be tested, the vertical screw has displacement in the axial direction of the top pressing nut 14 relative to the top pressing nut 14 and is used for adjusting and controlling the top pressing block 4 to press and loosen the box body to be tested, the internal thread of the top pressing nut 14 is a screw portion of the pressing structure in this embodiment, and the top pressing; in other embodiments, the pressure lever is provided with a threaded hole, the threaded hole is a threaded portion of the compression structure, the vertical screw rod penetrates through the threaded hole in the pressure lever from one side and is matched with a nut on the other side of the threaded hole, and the nut is a back nut; in other embodiments, a nut can be welded on the pressure lever, a thread structure with the same specification as the internal thread of the nut is arranged at a position, corresponding to a welded nut inner hole, on the pressure lever, the thread structure and the welded nut inner thread form a thread part of a compression structure, and the vertical screw rod penetrates through the thread part and can move in the axial direction relative to the thread part.
The box that awaits measuring in this embodiment is equipped with two openings that are used for the assembly on the side, utilizes first pressure testing shrouding 8, first sealing washer 9 and second pressure testing shrouding 10, second sealing washer 11 to pass through screw locking respectively, guarantees the holistic sealing performance of box that awaits measuring.
The battery box pressure test leak detection tool in the embodiment further comprises at least one group of limiting structures 15 arranged on two sides and used for limiting the box body to be detected to move in the horizontal direction, the box body to be detected in the embodiment is a cuboid, the limiting structures 15 are only required to be arranged on two sides of the long side surface of the box body, and displacement of the box body to be detected in the vertical length direction in the horizontal plane is limited, so that good contact between the box body to be detected and the sealing device is guaranteed, and good sealing between the box body to be detected and the base 1 is further guaranteed; in other embodiments, if the box structure to be tested is a cube, the limiting structures arranged on two sides of the box are required to be arranged on four sides of the box, so as to limit the displacement of the box to be tested on the horizontal plane.
The limiting structure 15 in this embodiment includes a transverse screw assembled on the support rod 18 by a thread, a side pressure operating handle 31 and a side pressure block 2 are connected to two ends of the transverse screw by a thread, the side pressure block 2 is pressed on the side wall of the box body to be measured, a through hole for the transverse screw to pass through along the outside is arranged on the support rod, and a side pressure nut matched with the transverse screw is welded on the inner side of the support rod corresponding to the through hole. In other embodiments, the specific structural form of the limiting structure is the same as that of the compression structure in other embodiments, the thread assembly mode of the transverse screw rod and the support rod is that the transverse screw rod is matched with a threaded hole arranged on the support rod, and the nut which is positioned on the inner side of the support rod and corresponds to the threaded hole can be a back nut or a nut which is welded on the support rod and corresponds to the threaded hole structure on the support rod and is used for lengthening a thread matching surface. In other embodiments, the transverse screw may be threadably connected to the fixed rod.
The limiting structure in other embodiments can also be a fixed block connected to the base through welding or a fastener, compared with the limiting structure in this embodiment, the limiting structure in the form of the fixed block limits the size of the box to be tested, when the structure of the box to be tested is changed, the position of the fixed block fixed to the base needs to be changed, and the limiting structure 15 in this embodiment is suitable for the box with the changeable structural size and has universality.
In the working process of the pressure test and leakage detection tool for the battery box in the embodiment, one end of eight groups of compression rods 5 provided with the compression structure 13 is lifted, the side pressure operating handle 31 on the transverse screw rod of the side limiting structure 15 is loosened, the box body to be detected is placed from top to bottom to be reversely buckled on the sealing strip 6 in the buckling area of the base 1, the edge part of the box body to be detected is well sealed with the sealing strip 6, then the compression rods 5 are operated to ensure that the compression rods 5 are all in the locking position, the pin shaft 7 is positioned in the through hole of the compression rod 5 and the fixing hole of the fixing rod 17 to limit the swinging of the compression rod 5, the compression structure 13 at the end part of the compression rod 5 is manually operated to press the operation handle 3, so that the compression block of the compression structure 13 presses the box body to be detected on the base 1, the side pressure operating handle 31 on the limiting structure 15 at the side part is operated to ensure that the side pressure block 2, closing the air inlet valve 20, maintaining the pressure for a certain time, judging whether the sealing performance of the tested box body to be tested is good or not through the parameters of the leak detector 19, after the pressure test is finished, loosening the top pressure operating handle 3 of the pressing structure 13 and the side pressure operating handle 31 of the limiting structure 15, pulling out the pin shaft 7 in the through hole of the compression bar 5, lifting the compression bar 5, taking down the tested box body to be tested, and entering the pressure test leak detection process of the next box body to be tested.
The pressure test leak detection tool for the battery box cover is also suitable for pressure test leak detection of the battery box cover, the pressure test leak detection embodiment for the battery box cover is similar to the pressure test leak detection embodiment for the box body, the difference is that only when the pressure test leak detection tool for the battery box cover is used for pressure test leak detection of the box cover, a first pressure test closing plate, a first sealing ring, a second pressure test closing plate and a second sealing ring are not needed, the rest pressure test leak detection processes are the same as the pressure test leak detection process for the box body in the embodiment, and the description is omitted here. This battery box pressure testing leak hunting frock need not be with the help of other appurtenance to the box and the case lid pressure testing leak hunting process of battery box, and the process is simpler relatively, and the pressure testing leak hunting time is short, greatly improves the production efficiency of battery box, satisfies the needs of volume production.
Claims (9)
1. The utility model provides a battery box pressure testing leak hunting frock which characterized in that: the battery box pressure test leak detection tool comprises a base, wherein a buckling area matched with a box body or a box cover to be detected is arranged on the base, a sealing structure matched with the edge of the box body or the box cover to be detected in a sealing mode correspondingly is arranged at the buckling area, an air inlet is further arranged at the buckling area and connected with a leak detection instrument, a pressing device is further arranged on the base and comprises a plurality of pressing rods hinged to the base through hinged shafts, pressing structures used for fixedly pressing the box body or the box cover to be detected in the buckling area are respectively arranged on each pressing rod, each pressing rod has an upward swinging avoiding stroke and a locking position capable of being fixedly assembled on the base oppositely, through holes are formed in the pressing rods at the sides of the corresponding hinged shafts, the battery box pressure test leak detection tool further comprises a pin shaft used for penetrating through the through holes of the pressing rods, and a blocking structure matched with the pin shaft in a blocking mode.
2. The battery box pressure test leak detection tool according to claim 1, characterized in that: the base is provided with a fixed rod, and the stopping structure is a fixed hole which is arranged on the fixed rod and is used for correspondingly penetrating through the through hole of the pressure rod so as to insert the pin shaft.
3. The battery box pressure test leak detection tool according to claim 2, characterized in that: the fixed rods and the pressing rods are arranged in a staggered mode along the axial direction of the pin shaft.
4. The battery box pressure test leak detection tool according to any one of claims 1-3, characterized in that: the through hole on the pressure lever and the compression structure are positioned on two sides of the corresponding hinge shaft.
5. The battery box pressure test leak detection tool according to any one of claims 1-3, characterized in that: the compression structure comprises a vertical screw rod in threaded fit with the compression rod and a pressing block arranged at the lower end of the vertical screw rod and used for pressing the box body or the box cover to be detected.
6. The battery box pressure test leak detection tool according to any one of claims 1-3, characterized in that: the battery box pressure test leak detection tool further comprises at least one group of limiting structures which are arranged on two sides in the horizontal direction relatively, so that the box body or the box cover can be positioned in the horizontal direction.
7. The battery box pressure test leak detection tool according to claim 6, characterized in that: the limiting structure comprises a transverse screw rod assembled on the base in a threaded fit mode and a side pressing block located at the end portion of the transverse screw rod and used for laterally pressing the box body or the box cover to be tested.
8. The battery box pressure testing leak detection tool according to claim 7, characterized in that: the base is provided with support rods corresponding to the pressure rods, each pressure rod is hinged on the corresponding support rod to be hinged on the base, and the transverse screw is assembled on the support rod in a threaded mode.
9. The battery box pressure test leak detection tool according to any one of claims 1-3, characterized in that: the sealing structure is an annular sealing strip fixed on the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810981380.XA CN110864850A (en) | 2018-08-27 | 2018-08-27 | Battery box pressure test leak hunting frock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810981380.XA CN110864850A (en) | 2018-08-27 | 2018-08-27 | Battery box pressure test leak hunting frock |
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| Publication Number | Publication Date |
|---|---|
| CN110864850A true CN110864850A (en) | 2020-03-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810981380.XA Pending CN110864850A (en) | 2018-08-27 | 2018-08-27 | Battery box pressure test leak hunting frock |
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| CN (1) | CN110864850A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102021211043A1 (en) | 2021-09-30 | 2022-07-21 | Vitesco Technologies GmbH | Method for monitoring the tightness of a battery housing of a battery module for a vehicle, battery module and vehicle |
-
2018
- 2018-08-27 CN CN201810981380.XA patent/CN110864850A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102021211043A1 (en) | 2021-09-30 | 2022-07-21 | Vitesco Technologies GmbH | Method for monitoring the tightness of a battery housing of a battery module for a vehicle, battery module and vehicle |
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