Explosion-proof valve and battery pack

Abstract

The invention relates to the technical field of battery pack explosion-proof valves, and discloses an explosion-proof valve and a battery pack, the explosion-proof valve comprises an explosion-proof valve body and a connecting structure. When the explosion-proof valve is installed, the explosion-proof valve body is connected to the installation panel in a butt joint mode, the pressure relief area of the explosion-proof valve is aligned with the exhaust hole, then the rotating shaft is reversely rotated in the second direction to drive the connecting part to reversely rotate, then the locking piece sequentially penetrates through the second installation hole, the first installation hole and the connecting hole from the outside, and therefore the explosion-proof valve is installed from the outside of the shell. When the anti-explosion valve needs to be disassembled, the locking piece is disassembled from the outside, then the rotating shaft is rotated in the first direction, the rotating shaft drives the connecting part to integrally rotate to the inner area of the exhaust hole, and then the anti-explosion valve is integrally pulled out of the exhaust hole, so that the anti-explosion valve is disassembled from the outside of the shell, the shell does not need to be disassembled in the anti-explosion valve disassembling and replacing process, and the anti-explosion valve is convenient to disassemble and replace. The time for disassembling the bolts on the shell is saved, and the efficiency for disassembling and replacing the anti-explosion valve can be greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of explosion-proof valves for battery packs, and in particular to an explosion-proof valve and a battery pack. Background Art

[0002] As the exhaust structure when the battery pack has thermal runaway, the explosion-proof valve plays a vital role in the battery pack. At present, for battery packs with large exhaust volume during thermal runaway, the most preferred explosion-proof valve type is the spring explosion-proof valve. However, the spring explosion-proof valve needs to be installed from the inside of the battery pack. If there is a problem with the spring explosion-proof valve, when replacing the spring explosion-proof valve, it is necessary to first remove the upper or lower shell of the battery pack, and then remove the spring explosion-proof valve from the inside of the shell. As a result, it takes a long time to replace the explosion-proof valve, and it is inconvenient to install and remove the explosion-proof valve from the inside of the shell. Summary of the invention

[0003] In view of this, the present invention provides an explosion-proof valve and a battery pack to solve the problems in the prior art that the explosion-proof valve is inconvenient to install and disassemble, and the replacement of the explosion-proof valve is time-consuming.

[0004] In a first aspect, the present invention provides an explosion-proof valve, which is suitable for being installed on a mounting panel, wherein the mounting panel is provided with an exhaust hole, wherein the outer edge of the exhaust hole is provided with a first mounting hole, and the first mounting hole is connected to the exhaust hole; the explosion-proof valve comprises:

[0005] The explosion-proof valve body has a plurality of second mounting holes and a plurality of rotation holes on its outer edge, and the rotation holes are arranged one by one on one side of the second mounting holes;

[0006] A connection structure, comprising a connection part and a rotating shaft, wherein the rotating shaft extends in a first direction, the rotating shaft is inserted into the rotating hole, and the extending direction of the connection part is perpendicular to the extending direction of the rotating shaft; one end of the connection part is connected to the rotating shaft, and the other end of the connection part is provided with a connecting hole, and the connection part is located on the inner side of the explosion-proof valve body; before the explosion-proof valve is installed on the installation panel, the rotating shaft is rotated to drive the connection part to rotate to the middle area of ​​the explosion-proof valve body; the connection part and the inner end surface of the explosion-proof valve body are spaced apart to form an installation space;

[0007] When the explosion-proof valve is installed on the installation panel, the connecting part extends to the inner side of the exhaust hole, the installation panel is located in the installation space, the rotating shaft is rotated to drive the connecting part to rotate to the first installation hole, and the connecting hole is aligned with the second installation hole; the locking piece is suitable for passing through the second installation hole from the outside of the explosion-proof valve body to the inside, and the inner end of the locking piece is detachably connected to the connecting hole.

[0008] Beneficial effect: When installing the explosion-proof valve of this structure, the rotating shaft is first passed through the rotating hole from the inside of the explosion-proof valve body, and one end of the rotating shaft away from the connecting part extends outward to the outside of the explosion-proof valve body, and the connecting part is located on the inner side of the explosion-proof valve body. The rotating shaft is rotated in a first direction, and the rotating shaft drives the connecting part to rotate to the middle area of ​​the explosion-proof valve body, ensuring that the connecting part of the explosion-proof valve can pass through the exhaust hole of the mounting panel, and the explosion-proof valve body is docked on the mounting panel, and the pressure relief area of ​​the explosion-proof valve is aligned with the exhaust hole. The rotating shaft is then rotated in the opposite direction in the second direction to drive the connecting part to rotate in the opposite direction, and the connecting hole is aligned with the first mounting hole and the second mounting hole, and the locking piece is passed through the second mounting hole, the first mounting hole and the connecting hole in sequence from the outside, and the inner end of the locking piece is detachably connected to the connecting hole. After the locking piece is locked, the connecting part outside the connecting hole is crimped on the mounting panel outside the first mounting hole to fix the explosion-proof valve on the mounting panel, thereby realizing the installation of the explosion-proof valve from the outside of the shell. When the explosion-proof valve needs to be disassembled, the locking piece is disassembled from the outside, and then the rotating shaft is rotated in the first direction. The rotating shaft drives the connecting part to rotate as a whole to the inner area of ​​the exhaust hole, and then the explosion-proof valve is pulled out of the exhaust hole as a whole, that is, the explosion-proof valve is disassembled from the outside of the shell. The shell does not need to be disassembled during the disassembly and replacement of the explosion-proof valve, which saves the time of disassembling the bolts on the shell and can greatly improve the efficiency of disassembling and replacing the explosion-proof valve. At the same time, the operation space is not limited when operating outside the shell, which is convenient for installing and disassembling the explosion-proof valve. In addition, when disassembling the explosion-proof valve, there is no need to disassemble the shell, which can avoid the failure of the sealing surface of the upper shell and the lower shell.

[0009] In an optional embodiment, an internal thread is provided on the inner peripheral wall of the connecting hole, and the locking member comprises a bolt, and the inner end of the bolt is threadedly connected to the connecting hole.

[0010] Beneficial effects: the inner end of the bolt is threadedly connected to the connecting hole, and the explosion-proof valve body is effectively and reliably connected to the connecting part through the bolt.

[0011] In an optional embodiment, the connection structure further includes a threaded sleeve, the threaded sleeve is disposed in the connection hole, and the bolt is threadedly connected to the threaded sleeve.

[0012] In an optional embodiment, a tolerance absorbing structure is provided on the connecting portion, and the tolerance absorbing structure is arranged between the connecting hole and the rotating shaft; the axis of the connecting hole is perpendicular to the length direction of the connecting portion, and the side of the connecting portion facing the explosion-proof valve body is a plane; when the bolt is tightened on the connecting hole, the connecting portion abuts against the inner surface of the mounting panel, and the tolerance absorbing structure elastically deforms to prevent the connecting portion from bending and breaking.

[0013] Beneficial effect: When the bolt is tightened on the connecting hole, the connecting part abuts against the inner surface of the mounting panel, and the tolerance absorption structure elastically deforms to absorb the tolerance in the thickness direction of the mounting panel and the explosion-proof valve body. During the process of tightening the bolt, the connecting part is ensured to fit on the mounting panel to prevent the connecting part from bending and breaking when subjected to force.

[0014] In an optional embodiment, the tolerance absorbing structure includes a serpentine winding structure, and the serpentine winding structure is arranged in a middle area in the length direction of the connecting portion.

[0015] In an optional embodiment, an opening portion is provided at the other end of the connecting portion, the connecting hole is provided on the opening portion, the opening portion is cylindrical, and the opening portion is suitable for being crimped onto the mounting panel.

[0016] Beneficial effect: The outer peripheral wall of the opening portion protrudes from the side of the rectangular strip-shaped connecting portion. This arrangement can increase the area of ​​the opening portion, so that the opening portion is crimped onto the mounting panel, ensuring that it has sufficient contact area with the mounting panel, thereby allowing the explosion-proof valve to be stably maintained on the mounting panel.

[0017] In an optional embodiment, a limiting member is protruding from the outer peripheral wall of the rotating shaft, a limiting step is provided on the explosion-proof valve body, and the limiting member abuts against the limiting step.

[0018] Beneficial effect: The limiting piece cooperates with the limiting step to prevent the rotating shaft from extending too deep into the rotating hole and compressing the space in the thickness direction of the installation space, which facilitates the installation and positioning of the rotating shaft.

[0019] In an optional embodiment, an operating member is further included, and the outer end of the rotating shaft away from the connecting portion extends to the outside of the explosion-proof valve body, and the operating member is connected to the outer end of the rotating shaft.

[0020] In an optional embodiment, the explosion-proof valve body includes a pressure relief portion and a mounting portion arranged outside the pressure relief portion, the pressure relief portion protrudes outward from the outer end surface of the mounting portion; the longitudinal sections of the pressure relief portion and the mounting portion are rectangular, the second mounting holes are arranged at the four corners of the mounting portion, and the rotation holes are arranged between adjacent second mounting holes;

[0021] The operating member includes a sleeve portion and two rotating paddles, the sleeve portion is connected to the outer end of the rotating shaft, the two rotating paddles are vertically arranged, and the plane surrounded by the two rotating paddles is perpendicular to the extension direction of the sleeve portion; the locking member is in a docking state with the connecting hole, one of the rotating paddles abuts against the side of the pressure relief portion, or one of the rotating paddles is parallel to the side of the pressure relief portion.

[0022] Beneficial effect: This arrangement can directly judge and ensure from the outside of the installation panel that the connection part is rotated into place, ensure the coaxiality of the axis of the connection hole and the first installation hole and the second installation hole, and facilitate the installation and removal of the explosion-proof valve from the outside of the shell.

[0023] In a second aspect, the present invention further provides a battery pack, comprising:

[0024] a housing having a mounting panel;

[0025] The explosion-proof valve described in any one of the above is installed on the installation panel. The battery pack includes an explosion-proof valve, which has the same technical effect as the explosion-proof valve and is not described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 This is a front view of an explosion-proof valve according to an embodiment of the present invention;

[0028] Figure 2 A side view of an explosion-proof valve according to an embodiment of the present invention;

[0029] Figure 3 A top view of an explosion-proof valve according to an embodiment of the present invention;

[0030] Figure 4 A schematic diagram of the three-dimensional structure of an explosion-proof valve according to an embodiment of the present invention;

[0031] Figure 5 This is a schematic diagram of the three-dimensional structure of a connection structure in an explosion-proof valve according to an embodiment of the present invention;

[0032] Figure 6 A top view of a connection structure in an explosion-proof valve according to an embodiment of the present invention;

[0033] Figure 7 A side view of a connection structure in an explosion-proof valve according to an embodiment of the present invention;

[0034] Figure 8 A side view of a connection structure in an explosion-proof valve according to an embodiment of the present invention;

[0035] Fig. 9 It is a three-dimensional structural schematic diagram of an operating component in an explosion-proof valve according to an embodiment of the present invention;

[0036] Fig.10 is a schematic diagram of a mounting panel in a battery pack according to an embodiment of the present invention;

[0037] Fig.11 A schematic diagram of the cooperation between a mounting panel and an explosion-proof valve in a battery pack according to an embodiment of the present invention;

[0038] Fig.12 for Fig.11 AA section view in the figure;

[0039] Fig.13 Fig.12 A partial enlarged view of part A in the middle.

[0040] Description of reference numerals:

[0041] 1. Explosion-proof valve; 11. Explosion-proof valve body; 111. Pressure relief part; 112. Mounting part; 1121. Limiting step; 12. Connection structure; 121. Connection part; 1211. Tolerance absorbing structure; 1212. Opening part; 12121. Connection hole; 122. Rotating shaft; 123. Limiting member; 13. Operating member; 131. Socket part; 132. Rotating paddle; 2. Locking member; 3. Installation panel; 31. Exhaust hole; 32. First installation hole. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 those skilled in the art without creative work are within the scope of protection of the present invention.

[0043] When the explosion-proof valve 1 is mounted on the battery pack housing, the side of the explosion-proof valve 1 facing the inside of the housing is called the inside, and the side of the explosion-proof valve 1 facing the outside of the housing is called the outside.

[0044] The explosion-proof valve 1 in the related art is installed on the installation panel 3 of the battery pack shell. The installation panel 3 is integrally arranged with the upper shell or the lower shell. The installation panel 3 is provided with an exhaust hole 31. The outer edge of the exhaust hole 31 is provided with a first installation hole 32. When assembling the battery pack, the pressure relief area of ​​the explosion-proof valve 1 is aligned with the exhaust hole 31. The outer edge of the explosion-proof valve 1 abuts against the outer surface of the installation panel 3. The bolts pass through the first installation hole 32 and the installation hole on the explosion-proof valve 1 from the inside of the shell. The bolt heads abut against the installation panel 3 to install the explosion-proof valve 1 on the upper shell or the lower shell. Then the upper shell and the lower shell are butt-jointed and sealed. The upper shell and the lower shell are connected by dozens of bolts. When the explosion-proof valve 1 has a problem and needs to be replaced, the upper shell and the lower shell need to be disassembled first, and then the bolts connecting the explosion-proof valve 1 are removed from the inside of the shell. However, the number of connecting bolts between the upper shell and the lower shell is large, which results in a long time to disassemble the upper shell and the lower shell, and thus a long time to replace the explosion-proof valve 1; and after the battery pack is assembled, the explosion-proof valve 1 is disassembled from the inside of the shell, and the operating space is limited, which makes it inconvenient to disassemble and install the explosion-proof valve 1 from the inside of the shell. When the upper shell and the lower shell are disassembled at the same time, the sealing surface between the upper shell and the lower shell may also fail.

[0045] Combine the following Figures 1 to 13 , describing an embodiment of the present invention.

[0046] According to an embodiment of the present invention, on the one hand, an explosion-proof valve 1 is provided, which is suitable for being installed on a mounting panel 3, on which an exhaust hole 31 is provided, and a first mounting hole 32 is provided on the outer edge of the exhaust hole 31, and the first mounting hole 32 is connected to the exhaust hole 31.

[0047] The explosion-proof valve 1 includes an explosion-proof valve body 11 and a connection structure 12. The outer edge of the explosion-proof valve body 11 is provided with a plurality of second mounting holes and a plurality of rotation holes, and the rotation holes are arranged one by one on one side of the second mounting holes; the connection structure 12 includes a connection portion 121 and a rotation axis 122, the rotation axis 122 extends along a first direction, the rotation axis 122 is inserted into the rotation hole, and the extension direction of the connection portion 121 is perpendicular to the extension direction of the rotation axis 122; one end of the connection portion 121 is connected to the rotation axis 122, and the other end of the connection portion 121 is provided with a connection hole 12121, and the connection portion 121 is located on the inner side of the explosion-proof valve body 11; before the explosion-proof valve 1 is installed to the installation panel 3, the rotation axis 121 is rotated. 22 drives the connecting part 121 to rotate to the middle area of ​​the explosion-proof valve body 11; the connecting part 121 is spaced apart from the inner end surface of the explosion-proof valve body 11 to form an installation space; when the explosion-proof valve 1 is installed on the installation panel 3, the connecting part 121 extends to the inner side of the exhaust hole 31, and the installation panel 3 is located in the installation space, and the rotating shaft 122 is rotated to drive the connecting part 121 to rotate to the first installation hole 32, and the connecting hole 12121 is aligned with the second installation hole; the locking member 2 is suitable for being inserted into the second installation hole from the outside of the explosion-proof valve body 11 to the inside, and the inner end of the locking member 2 is detachably connected to the connecting hole 12121.

[0048] When installing the explosion-proof valve 1 of this structure, the rotating shaft 122 is firstly inserted into the rotating hole from the inside of the explosion-proof valve body 11, and the end of the rotating shaft 122 away from the connecting portion 121 extends outward to the outside of the explosion-proof valve body 11, and the connecting portion 121 is located on the inner side of the explosion-proof valve body 11, and the rotating shaft 122 is rotated along the first direction ( Figure 1The rotating shaft 122 is rotated in the direction of the middle arrow, and the rotating shaft 122 drives the connecting part 121 to rotate to the middle area of ​​the explosion-proof valve body 11, ensuring that the connecting part 121 of the explosion-proof valve 1 can pass through the exhaust hole 31 of the mounting panel 3, dock the explosion-proof valve body 11 to the mounting panel 3, and align the pressure relief area of ​​the explosion-proof valve 1 with the exhaust hole 31, and then rotate the rotating shaft 122 in the second direction in the opposite direction to drive the connecting part 121 to rotate in the opposite direction, and align the connecting hole 12121 with the first mounting hole 32 and the second mounting hole, and then pass the locking member 2 through the second mounting hole, the first mounting hole 32 and the connecting hole 12121 from the outside in sequence, and make the inner end of the locking member 2 detachably connected to the connecting hole 12121, after the locking member 2 is locked, the connecting part 121 outside the connecting hole 12121 is crimped on the mounting panel 3 outside the first mounting hole 32, so as to fix the explosion-proof valve 1 on the mounting panel 3, thereby realizing the installation of the explosion-proof valve 1 from the outside of the shell. When the explosion-proof valve 1 needs to be disassembled, the locking member 2 is disassembled from the outside, and then the rotating shaft 122 is rotated in the first direction. The rotating shaft 122 drives the connecting portion 121 to rotate as a whole to the inner area of ​​the exhaust hole 31, and then the explosion-proof valve 1 is pulled out of the exhaust hole 31 as a whole, that is, the explosion-proof valve 1 is disassembled from the outside of the shell. The shell does not need to be disassembled during the disassembly and replacement of the explosion-proof valve 1, which saves the time of disassembling the bolts on the shell, and can greatly improve the efficiency of disassembling and replacing the explosion-proof valve 1. At the same time, the operation space is not limited when operating outside the shell, which is convenient for installing and disassembling the explosion-proof valve 1. In addition, when disassembling the explosion-proof valve 1, there is no need to disassemble the shell, which can avoid the failure of the sealing surface of the upper shell and the lower shell.

[0049] In some embodiments, an inner thread is provided on the inner peripheral wall of the connection hole 12121, and the locking member 2 includes a bolt, the inner end of the bolt is threadedly connected to the connection hole 12121, and the explosion-proof valve body 11 is effectively and reliably connected to the connection part 121 through the bolt.

[0050] Optionally, in some embodiments, the connection structure 12 further includes a threaded sleeve, which is disposed in the connection hole 12121, and the bolt is threadedly connected to the threaded sleeve. The threaded sleeve can protect the internal thread of the inner peripheral wall of the connection hole 12121, and enhance the internal thread, and can effectively enhance the connection strength between the bolt and the connection part 121, ensuring that the explosion-proof valve 1 is stably maintained on the installation panel 3 after installation; at the same time, the threaded sleeve can prevent the thread from loosening or slipping; in addition, the threaded sleeve also has the advantages of high strength and wear resistance, and can increase the service life of the internal thread and the connection part 121.

[0051] like Figure 4 As shown, a gasket is provided on the inner side of the bolt head, and the gasket abuts against the outer wall surface of the explosion-proof valve body 11.

[0052] In other embodiments, the end of the locking member 2 is inserted into the connecting hole 12121 , and the inner end of the locking member 2 is connected to the connecting portion 121 by magnetic attraction, so that the locking member 2 is detachably connected to the connecting portion 121 .

[0053] like Figure 2 , Fig.12 and Fig.13 As shown, after the connection structure 12 is assembled, the rotating shaft 122 extends along the thickness direction of the explosion-proof valve body 11, and the connecting portion 121 is perpendicular to the rotating shaft 122. After installation, the side of the connecting portion 121 facing the explosion-proof valve body 11 abuts against the inner surface of the mounting panel 3. However, there are errors in the thickness direction of the mounting panel 3 and the explosion-proof valve body 11 during the processing, which may easily cause the inner surface of the mounting panel 3 to not be a vertical plane, thereby causing the connecting portion 121 to tilt inward or outward. The connecting portion 121 is in an inclined state, and the length direction of the connecting portion 121 is not perpendicular to the axis of the connecting hole 121. During the process of tightening the bolts, the connecting portion 121 is easily bent and broken by the torsion. In order to solve this problem, as Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, a tolerance absorbing structure 1211 is provided on the connecting portion 121, and the tolerance absorbing structure 1211 is arranged between the connecting hole 12121 and the rotating shaft 122; the axis of the connecting hole 12121 is perpendicular to the length direction of the connecting portion 121, and the side of the connecting portion 121 facing the explosion-proof valve body 11 is a plane; when the bolt is tightened on the connecting hole 12121, the connecting portion 121 abuts against the inner surface of the mounting panel 3, and the tolerance absorbing structure 1211 elastically deforms to absorb the tolerance of the mounting panel 3 and the explosion-proof valve body 11 in the thickness direction. In the process of tightening the bolt, it is ensured that the connecting portion 121 is fitted on the mounting panel 3 to prevent the connecting portion 121 from bending and breaking when subjected to force.

[0054] In some embodiments, the tolerance absorbing structure 1211 includes a serpentine winding structure, which is arranged in the middle area of ​​the length direction of the connecting part 121. When the serpentine winding structure is subjected to force, each section thereof is elongated or compressed to absorb the force applied during the tightening of the bolt.

[0055] like Figure 5 and Figure 6 As shown, the connecting portion 121 is in a rectangular strip shape, and the four sides of the serpentine winding structure are flush with the four sides of the connecting portion 121. The two ends of the serpentine winding structure are respectively connected to the connecting portion 121. The serpentine winding structure includes a plurality of connecting segments and parallel segments. The connecting segments extend along the length direction of the connecting portion 121, and the parallel segments extend in the width direction ( Figure 6The two ends of each connecting segment are respectively connected to a parallel segment, and another connecting segment is connected to the end of the previous parallel segment. Multiple connecting segments, parallel segments, connecting segments, and parallel segments are sequentially connected end to end to form a serpentine winding structure, and all parallel segments are parallel to each other. All connecting segments are parallel to each other.

[0056] Optionally, in some embodiments, the connection structure 12 is integrally formed by injection molding.

[0057] In other embodiments, the tolerance absorbing structure 1211 may further include a spring sheet, and two ends of the spring sheet are respectively connected to the connecting portions 121 at two ends thereof.

[0058] like Figure 5 , Figure 7 and Figure 8 As shown, in some embodiments, the other end of the connection part 121 is provided with an opening part 1212, and the connection hole 12121 is provided on the opening part 1212. The opening part 1212 is cylindrical and suitable for being pressed on the installation panel 3. The axial direction of the opening part 1212 is perpendicular to the length direction of the connection part 121, and the outer peripheral wall of the opening part 1212 protrudes from the side of the rectangular strip-shaped connection part 121. Such a setting can increase the area of ​​the opening part 1212, so that the opening part 1212 is pressed on the installation panel 3, ensuring that it has a sufficient contact area with the installation panel 3, so that the explosion-proof valve 1 is stably maintained on the installation panel 3. Fig.10 As shown, the inner side wall of the first mounting hole 32 is in the shape of an arc surface, and the cylindrical opening portion 1212 can be effectively pressed onto the mounting panel 3 outside the first mounting hole 32 .

[0059] The cross section of the opening portion 1212 parallel to the direction of the mounting panel 3 is larger than the cross section of the first mounting hole 32. Before the bolt is tightened on the connecting portion 121, the rotating shaft 122 is rotated so that the opening portion 1212 is located inside the first mounting hole 32, and the connecting hole 12121 faces the first mounting hole 32 and the second mounting hole. After the bolt is tightened on the connecting portion 121, the opening portion 1212 is pressed against the inner wall surface of the mounting panel 3.

[0060] In other embodiments, the cross-section of the opening portion 1212 parallel to the length direction of the connecting portion 121 may also be rectangular or other shapes, as long as its cross-sectional area in the direction parallel to the mounting panel 3 is larger than the cross-sectional area of ​​the first mounting hole 32, so as to ensure that the opening portion 1212 can be crimped onto the mounting panel 3 outside the first mounting hole 32 after the bolt is tightened, so as to lock the explosion-proof valve 1 on the mounting panel 3.

[0061] like Figures 5 to 7 and Fig.13As shown, a stopper 123 is protruded on the outer peripheral wall of the rotating shaft 122, and a stopper step 1121 is provided on the explosion-proof valve body 11, and the stopper 123 abuts on the stopper step 1121. When the rotating shaft 122 is installed, the stopper 123 is installed in place when it abuts on the stopper step 1121. In this state, the side of the connecting portion 121 facing the inner wall of the explosion-proof valve body 11 is spaced from the explosion-proof valve body 11 to form an installation space in the thickness direction of the explosion-proof valve body 11. The explosion-proof valve body 11 is attached to the outer wall of the installation panel 3 from the outside, and the installation space forms a space for accommodating the installation panel 3. The stopper 123 cooperates with the stopper step 1121 to prevent the rotating shaft 122 from extending too deep into the rotating hole and compressing the space in the thickness direction of the installation space, so as to facilitate the installation and positioning of the rotating shaft 122. The distance between the limiting member 123 and the facing surface of the connecting portion 121 can be adjusted according to the thickness of the mounting panel 3 to ensure that the thickness of the mounting space can accommodate the mounting panel 3 after the explosion-proof valve body 11 is docked with the mounting panel 3 .

[0062] In some embodiments, the rotating shaft 122 is cylindrical, the limiting member 123 is disc-shaped, and the limiting member 123 is integrally formed on the rotating shaft 122 .

[0063] In some embodiments, Figure 4 and Fig. 9 As shown, the explosion-proof valve 1 further includes an operating member 13, the outer end of the rotating shaft 122 away from the connecting portion 121 extends to the outside of the explosion-proof valve body 11, and the operating member 13 is connected to the outer end of the rotating shaft 122. When the rotating shaft 122 and the connecting portion 121 need to be rotated, the rotating shaft 122 can be rotated outside the explosion-proof valve 1 by the operating member 13, so that the rotating shaft 122 can be rotated conveniently and quickly.

[0064] like Figure 4 and Fig. 9 As shown, the explosion-proof valve body 11 includes a pressure relief portion 111 and a mounting portion 112 arranged outside the pressure relief portion 111, and the pressure relief portion 111 protrudes outward from the outer end surface of the mounting portion 112; the longitudinal sections of the pressure relief portion 111 and the mounting portion 112 are rectangular, and the second mounting holes are arranged at the four corners of the mounting portion 112, and a rotation hole is arranged between adjacent second mounting holes, and the second mounting holes are arranged corresponding to the first mounting holes 32. Figure 4 The x direction is called the length direction of the explosion-proof valve 1, the z direction is called the width direction of the explosion-proof valve 1, and the y direction is called the thickness direction of the explosion-proof valve 1.

[0065] The operating member 13 includes a socket portion 131 and two rotating paddles 132, the socket portion 131 is connected to the outer end of the rotating shaft 122, the two rotating paddles 132 are vertically arranged, and the plane surrounded by the two rotating paddles 132 is perpendicular to the extension direction of the socket portion 131; the locking member 2 is in a docking state with the connecting hole 12121, the pressure relief portion 111 has a side surface that is roughly parallel to the sides of the mounting portion 112, one of the rotating paddles 132 abuts against the side surface of the pressure relief portion 111, or one of the rotating paddles 132 is parallel to the side surface of the pressure relief portion 111, such an arrangement can determine the position of the connecting portion 121 according to the position of the rotating paddle 132, when the rotating paddle 132 abuts against the side surface of the pressure relief portion 111, or one of the rotating paddles 132 is parallel to the side surface of the pressure relief portion 111, it can be determined that the connecting portion 121 is rotated into place, at this time, the connecting portion 121 extends along the length or width direction of the explosion-proof valve 1, and the connecting hole 12121 is aligned with the first mounting hole 32 and the second mounting hole.

[0066] like Fig.10 As shown, the exhaust hole 31 is rectangular, and a first mounting hole 32 is respectively provided at the four corners of the exhaust hole 31. The mounting panel 3 in the connecting area between the exhaust hole 31 and the first mounting hole 32 protrudes toward the inside of the exhaust hole 31. After the bolt is tightened on the connecting portion 121, a part of the connecting portion 121 is pressed against the protruding area of ​​the mounting panel 3. If the connecting portion 121 is kept Fig.11 , the connection part 121 cannot be extended into the inner side of the exhaust hole 31 from the outside. For this reason, a rotating shaft 122 and an operating member 13 are provided. Before installing the explosion-proof valve 1, the operating member 13 is rotated first to rotate the connection part 121 to the middle area of ​​the explosion-proof valve body 11 to avoid interference between the connection part 121 and the installation panel 3 during installation. Rotating the connection part 121 to the middle area of ​​the explosion-proof valve body 11 means rotating the connection part 121 to a position where it does not interfere with the installation panel 3 and does not affect the connection part 121 extending into the inner side of the exhaust hole 31. Figure 1 As shown, a second mounting hole is disposed at each of the four corners of the mounting portion 112, and the rotation hole is located in the middle of two adjacent second mounting holes.

[0067] Optionally, the two rotating paddles 132 are respectively the first rotating paddle and the second rotating paddle. Before installing the explosion-proof valve 1, the rotating operating member 13 makes the first rotating paddle abut against the side of the pressure relief portion 111, or be parallel to the side of the pressure relief portion 111, and the connecting portion 121 is extended to the inner side of the mounting panel 3 through the exhaust hole 31. At this time, the second rotating paddle is in a state perpendicular to the side of the pressure relief portion 111; and then the operating member 13 is rotated 90° in the opposite direction, so that the second rotating paddle abuts against the side of the pressure relief portion 111, or is parallel to the side of the pressure relief portion 111. At this time, the first rotating paddle is in a state perpendicular to the side of the pressure relief portion 111, so that the connecting portion 121 can be directly judged and guaranteed to be rotated into place from the outside of the mounting panel 3, and the coaxiality of the connecting hole 12121 and the axis of the first mounting hole 32 and the second mounting hole is guaranteed, so as to facilitate the installation and removal of the explosion-proof valve 1 from the outside of the shell.

[0068] Optionally, in some embodiments, Figure 5 and Figure 6 As shown, the diameter of the outer end of the rotating shaft 122 is smaller than the diameter of the side close to the connecting portion 121, and this area forms a reduced diameter section. The sleeve connecting portion 131 is in a hollow cylindrical shape, and the sleeve connecting portion 131 is sleeved outside the reduced diameter section. The reduced diameter section and the sleeve connecting portion 131 are interference fit or adhesively connected to keep the two relatively fixed.

[0069] In some embodiments, the two rotating paddles 132 are in the shape of rectangular strips. Optionally, the rotating paddles 132 and the sleeve portion 131 are integrally formed.

[0070] According to an embodiment of the present invention, on the other hand, a battery pack is provided, including a housing and an explosion-proof valve 1, wherein the housing has a mounting panel 3; an exhaust hole 31 is provided on the mounting panel 3, and a first mounting hole 32 is provided at the outer edge of the exhaust hole 31, and the first mounting hole 32 is connected to the exhaust hole 31. The explosion-proof valve 1 is mounted on the mounting panel 3.

[0071] In the battery pack of this structure, the locking member 2 passes through the second mounting hole, the first mounting hole 32 and the connecting hole 12121 from the outside to the inside in sequence, and the explosion-proof valve 1 is fixed on the mounting panel 3, so that the explosion-proof valve 1 can be installed from the outside of the shell. When the explosion-proof valve 1 needs to be disassembled, the locking member 2 is disassembled from the outside, and then the rotating shaft 122 is rotated in the first direction. The rotating shaft 122 drives the connecting part 121 to rotate as a whole to the inner area of ​​the exhaust hole 31, and then the explosion-proof valve 1 is pulled out of the exhaust hole 31 as a whole, that is, the explosion-proof valve 1 is disassembled from the outside of the shell. The shell does not need to be disassembled during the disassembly and replacement of the explosion-proof valve 1, which can greatly improve the efficiency of disassembly and replacement of the explosion-proof valve 1. At the same time, the operation space is not limited when operating outside the shell, which is convenient for installing and disassembling the explosion-proof valve 1. In addition, when disassembling the explosion-proof valve 1, it is not necessary to disassemble the shell, which can avoid the failure of the sealing surface of the upper shell and the lower shell.

[0072] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. An explosion-proof valve, characterized in that: Suitable for installation on a mounting panel (3), the mounting panel (3) being provided with an exhaust hole (31), the outer edge of the exhaust hole (31) being provided with a first installation hole (32), the first installation hole (32) being connected to the exhaust hole (31); the explosion-proof valve (1) comprising: An explosion-proof valve body (11) has a plurality of second mounting holes and a plurality of rotation holes on its outer edge, wherein the rotation holes are arranged one by one on one side of the second mounting holes; A connection structure (12), comprising a connection portion (121) and a rotation axis (122), wherein the rotation axis (122) extends in a first direction, the rotation axis (122) is inserted into the rotation hole, and the extension direction of the connection portion (121) is perpendicular to the extension direction of the rotation axis (122); one end of the connection portion (121) is connected to the rotation axis (122), the other end of the connection portion (121) is provided with a connection hole (12121), and the connection portion (121) is located on the inner side of the explosion-proof valve body (11); before the explosion-proof valve (1) is installed on the installation panel (3), the rotation axis (122) is rotated to drive the connection portion (121) to rotate to the middle area of ​​the explosion-proof valve body (11); the connection portion (121) is spaced apart from the inner end surface of the explosion-proof valve body (11) to form an installation space; When the explosion-proof valve (1) is installed on the installation panel (3), the connecting portion (121) extends to the inner side of the exhaust hole (31), the installation panel (3) is located in the installation space, the rotating shaft (122) is rotated to drive the connecting portion (121) to rotate to the first installation hole (32), and the connecting hole (12121) is aligned with the second installation hole; the locking member (2) is suitable for being inserted into the second installation hole from the outer side of the explosion-proof valve body (11) to the inside, and the inner end of the locking member (2) is detachably connected to the connecting hole (12121).

2. The explosion-proof valve according to claim 1, characterized in that: An internal thread is provided on the inner peripheral wall of the connecting hole (12121), and the locking member (2) comprises a bolt, the inner end of the bolt being threadably connected to the connecting hole (12121).

3. The explosion-proof valve according to claim 2, characterized in that: The connection structure (12) further comprises a threaded sleeve, wherein the threaded sleeve is arranged in the connection hole (12121), and the bolt is threadedly connected to the threaded sleeve.

4. The explosion-proof valve according to claim 2 or 3, characterized in that: The connection part (121) is provided with a tolerance absorbing structure (1211), and the tolerance absorbing structure (1211) is arranged between the connection hole (12121) and the rotating shaft (122); the axis of the connection hole (12121) is perpendicular to the length direction of the connection part (121), and the side of the connection part (121) facing the explosion-proof valve body (11) is a plane; when the bolt is tightened on the connection hole (12121), the connection part (121) abuts against the inner surface of the installation panel (3), and the tolerance absorbing structure (1211) is elastically deformed to prevent the connection part (121) from bending and breaking.

5. The explosion-proof valve according to claim 4, characterized in that: The tolerance absorbing structure (1211) comprises a serpentine winding structure, and the serpentine winding structure is arranged in a middle area in the length direction of the connecting portion (121).

6. The explosion-proof valve according to any one of claims 1 to 3, characterized in that: The other end of the connecting portion (121) is provided with an opening portion (1212), the connecting hole (12121) is provided on the opening portion (1212), the opening portion (1212) is cylindrical, and the opening portion (1212) is suitable for being crimped onto the mounting panel (3).

7. The explosion-proof valve according to any one of claims 1 to 3, characterized in that: A limiting member (123) is protruding from the outer peripheral wall of the rotating shaft (122), a limiting step (1121) is provided on the explosion-proof valve body (11), and the limiting member (123) abuts against the limiting step (1121).

8. The explosion-proof valve according to any one of claims 1 to 3, characterized in that: It also comprises an operating member (13), the outer end of the rotating shaft (122) away from the connecting portion (121) extends to the outside of the explosion-proof valve body (11), and the operating member (13) is connected to the outer end of the rotating shaft (122).

9. The explosion-proof valve according to claim 8, characterized in that: The explosion-proof valve body (11) comprises a pressure relief portion (111) and a mounting portion (112) arranged outside the pressure relief portion (111), the pressure relief portion (111) protruding outward from the outer end surface of the mounting portion (112); the longitudinal sections of the pressure relief portion (111) and the mounting portion (112) are rectangular, the second mounting holes are arranged at the four corners of the mounting portion (112), and the rotation holes are arranged between adjacent second mounting holes; The operating member (13) comprises a sleeve portion (131) and two rotating paddles (132), wherein the sleeve portion (131) is connected to the outer end of the rotating shaft (122), the two rotating paddles (132) are vertically arranged, and a plane surrounded by the two rotating paddles (132) is vertical to the extension direction of the sleeve portion (131); the locking member (2) is in a docking state with the connecting hole (12121), wherein one of the rotating paddles (132) abuts against a side surface of the pressure relief portion (111), or one of the rotating paddles (132) is parallel to the side surface of the pressure relief portion (111).

10. A battery pack, characterized in that: include: A housing having a mounting panel (3); The explosion-proof valve (1) according to any one of claims 1 to 9, wherein the explosion-proof valve (1) is installed on the installation panel (3).

Images