An explosion-proof valve, a battery pack and an electric device

Abstract

The application provides an explosion-proof valve, a battery pack and an electric device. The explosion-proof valve comprises a main body and at least one buckle, the main body is provided with a through hole, and the buckle is rotatably arranged on the main body. To solve the problem that the explosion-proof valve is difficult to install and is easy to damage the battery shell or the explosion-proof valve during the installation process, resulting in poor connection reliability between the explosion-proof valve and the battery shell.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of batteries, and in particular to a battery pack and an electric device. BACKGROUND

[0002] A battery is a power source that provides a power source for tools, and is usually a storage battery or a rechargeable battery that provides power for electric vehicles, electric trains, electric bicycles, and golf carts.

[0003] The current battery pack shell is provided with an explosion-proof valve, one end of the explosion-proof valve is in communication with the inside of the battery pack, and the other end of the explosion-proof valve is in communication with the outside of the battery pack. If the internal pressure of the battery pack is greater than or equal to a preset pressure, the explosion-proof valve is opened to discharge the gas inside the battery pack to the outside of the battery pack to reduce the internal gas pressure of the battery pack.

[0004] In related technologies, the explosion-proof valve is difficult to install and is easily damaged during installation, which leads to poor connection reliability between the explosion-proof valve and the battery shell. SUMMARY

[0005] Embodiments of the present application provide an explosion-proof valve, a battery pack and an electric device, which can solve the problem of poor connection reliability between the explosion-proof valve and the battery shell due to the difficulty in installing the explosion-proof valve and the damage to the battery shell or the explosion-proof valve during installation.

[0006] Embodiments of the present application provide the following technical solutions:

[0007] The first aspect of the embodiments of the present application provides an explosion-proof valve, comprising:

[0008] a main body, the main body being provided with a through hole;

[0009] at least one buckle, rotatably arranged on the main body.

[0010] It can be understood that the buckle is rotatably arranged on the main body, which can enable the main body to be connected with a preset installation position through the buckle, thereby reducing the connection difficulty of the explosion-proof valve and the battery or the battery pack. The through hole can enable the air in the battery or the battery pack to be in convection with the air in the external environment, so that the air in the battery or the battery pack can be guided to the external environment after passing through the through hole, thereby protecting the battery or the battery pack.

[0011] In a feasible implementation manner, the buckle is provided with a plurality of buckles, and the plurality of buckles are arranged around and spaced apart.

[0012] It can be understood that increasing the number of buckles can improve the connection strength between the explosion-proof valve and the battery or battery pack, so as to reduce the occurrence of the explosion-proof valve falling off relative to the battery or battery pack, thereby prolonging the safety performance of the explosion-proof valve and the battery or battery pack.

[0013] In an embodiment, the buckle comprises a clamping arm and a clamping jaw, and the clamping jaw is connected to the main body through the clamping arm.

[0014] It can be understood that the clamping arm is used to pass through the through hole, so that the clamping jaw can be connected with the through hole of the battery or battery pack, which has the advantage of easy installation.

[0015] In an embodiment, the buckle comprises a knob, the knob is connected with the clamping arm, and the knob is located on the side of the clamping arm away from the clamping jaw.

[0016] The main body is provided with a connecting hole, the clamping arm passes through the connecting hole and is connected with the knob; the knob is used to drive the clamping arm to rotate the clamping jaw relative to the main body.

[0017] It can be understood that the knob can provide a holding area for the buckle, which facilitates the operator to position and rotate the buckle, thereby reducing the difficulty of dismounting and installing the explosion-proof valve and the battery or battery pack, and improving the dismounting and installation efficiency of the explosion-proof valve.

[0018] In an embodiment, the explosion-proof valve further comprises:

[0019] A first sealing ring is sleeved on the main body.

[0020] It can be understood that the first sealing ring can prevent the air or water in the external environment from entering the battery or battery pack through the main body, thereby improving the safety performance of the explosion-proof valve and protecting the battery or battery pack.

[0021] In an embodiment, the explosion-proof valve further comprises:

[0022] At least one second sealing ring is arranged on the main body, and the second sealing ring is arranged on the outer peripheral wall of the buckle.

[0023] It can be understood that the second sealing ring can prevent the air or water in the external environment from entering the battery or battery pack through the connection between the buckle and the main body, thereby improving the safety performance of the explosion-proof valve and protecting the battery or battery pack.

[0024] In an embodiment, a plurality of buckles are provided, a plurality of second sealing rings are provided, and the plurality of buckles and the plurality of second sealing rings are one-to-one corresponding.

[0025] It can be understood that the plurality of buckles are arranged one-to-one with the plurality of second sealing rings, which can improve the sealing effect between the buckle and the main body, improve the sealing effect between the explosion-proof valve and the battery or battery pack, and reduce the entry of water in the external environment into the battery or battery pack, thereby protecting the battery or battery pack.

[0026] In an available implementation, further comprising:

[0027] The waterproof and breathable film covers the through hole.

[0028] It can be understood that the through hole and the waterproof and breathable film can enable the air in the battery or battery pack to be in convection with the air in the external environment, so that the air in the battery or battery pack can be guided to the external environment after passing through the through hole and the waterproof and breathable film, and the waterproof and breathable film can block water or sand in the external environment, thereby reducing the entry of water or sand in the external environment into the battery or battery pack after passing through the through hole, thereby protecting the battery or battery pack.

[0029] In an available implementation, the main body comprises: a first shell and a second shell, the first shell and the second shell are connected, the first shell and the second shell enclose a protection cavity, and the through hole is arranged in the first shell.

[0030] It can be understood that the first shell is used to connect with the battery or battery pack, the second shell can block the impact of solid in the external environment on the waterproof and breathable film, thereby protecting the waterproof and breathable film, and the second shell can block water or sand in the external environment, thereby prolonging the service life of the waterproof and breathable film, thereby protecting the battery or battery pack and prolonging the service life of the explosion-proof valve.

[0031] In an available implementation, the clamping arm has a fracture point, and the cross-sectional area of the clamping arm at the fracture point is smaller than the cross-sectional area of the clamping arm at other positions.

[0032] It can be understood that the cross-sectional area of the clamping arm at the fracture point is smaller than the cross-sectional area of the clamping arm at other positions, so that the fracture point is more prone to breaking than other positions of the clamping arm, thereby improving the safety performance of the clamping arm.

[0033] In an available implementation, the through hole is located at the center of the main body, the plurality of buckles are distributed along the circumference of the through hole, and the buckle surrounds the outer periphery of the through hole.

[0034] It can be understood that the through hole is located at the center of the main body, the air inside the battery or the battery pack and the through hole can be guided out with increased efficiency, the buckles are spaced apart along the circumference of the through hole, and the buckles surround the outer periphery of the through hole, so that the stress concentration of the main body can be reduced, and the service life of the main body can be prolonged.

[0035] The second aspect of the embodiment of the application provides a battery pack, comprising a battery shell and an explosion-proof valve, wherein the explosion-proof valve is arranged on the battery shell.

[0036] The battery shell has a through hole, and part of the explosion-proof valve passes through the through hole and is connected to the battery shell.

[0037] In the case where the explosion-proof valve is arranged on the battery shell, the main body of the explosion-proof valve and the battery are surrounded to form a sealed cavity, part of the buckle of the explosion-proof valve passes through the through hole and is connected and fixed to the battery shell.

[0038] It can be understood that part of the buckle passes through the through hole on the battery pack, the buckle is connected to the battery shell, the connection difficulty of the buckle and the through hole on the battery pack can be reduced, the installation and disassembly efficiency of the main body and the battery pack can be improved, the main body can plug the through hole to protect the battery pack from water, and the battery shell or the explosion-proof valve will not be damaged during installation, after installation is completed, the explosion-proof valve and the battery pack can be stably connected, and the connection reliability and connection strength of the explosion-proof valve and the battery pack can be improved.

[0039] In a feasible implementation, when the pressure in the sealed cavity is greater than or equal to the maximum compressive strength of the buckle, the buckle is broken, so that the main body is separated from the battery pack and the through hole is exposed.

[0040] It can be understood that if the internal pressure in the sealed cavity is greater than or equal to the maximum compressive strength of the buckle, the buckle is broken, the main body is separated from the battery pack, and the through hole is exposed, so that the through hole is in communication with the external environment, thereby accelerating the outflow of the pressure in the sealed cavity, and the battery pack is safely protected; or if the internal pressure in the sealed cavity is greater than or equal to the maximum compressive strength of the buckle, the buckle is broken, and the internal pressure in the sealed cavity continues to increase, which causes the main body to be separated from the through hole under the push of the internal pressure in the sealed cavity, so that the explosion-proof valve is separated from the battery pack, the through hole is in communication with the external environment, thereby accelerating the outflow of the pressure in the sealed cavity, and the battery pack is safely protected.

[0041] The third aspect of the embodiment of the application provides a power consumption device, comprising a power consumption device and a battery pack, and the battery pack is used to provide electric energy for the power consumption device.

[0042] In addition to the technical problems solved by the embodiments of the present application, the technical features constituting the technical solutions, and the beneficial effects brought by these technical features described above, other technical problems solved by the explosion-proof valve, the battery pack and the electric device provided by the embodiments of the present application, other technical features included in the technical solutions, and the beneficial effects brought by these technical features will be further described in detail in the specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0044] Figure 1 A connection structure schematic diagram of the explosion-proof valve and the battery pack provided by the embodiments of the present application is shown in Figure 1;

[0045] Figure 2 A connection structure schematic diagram of the explosion-proof valve and the battery pack provided by the embodiments of the present application is shown in Figure 2;

[0046] Figure 3 A connection structure schematic diagram of the explosion-proof valve and the battery pack provided by the embodiments of the present application is shown in Figure 3;

[0047] Figure 4 A connection structure schematic diagram of the explosion-proof valve and the battery pack provided by the embodiments of the present application is shown in Figure 4;

[0048] Figure 5 A main body structure schematic diagram of the first shell provided by the embodiments of the present application is shown in Figure 5;

[0049] Figure 6 A main body structure schematic diagram of the first shell provided by the embodiments of the present application is shown in Figure 6.

[0050] Explanation of reference signs:

[0051] 100 - main body; 101 - first shell; 102 - second shell; 103 - through hole; 104 - waterproof and breathable film; 105 - connecting hole;

[0052] 200 - buckle; 201 - clamping arm; 202 - clamping jaw; 203 - knob;

[0053] 300 - first sealing ring;

[0054] 400 - second sealing ring;

[0055] 10 - battery pack; 11 - battery shell; 12 - through hole. DETAILED DESCRIPTION

[0056] Battery refers to a power source that provides a power source for a tool, and refers to a storage battery or a rechargeable battery that provides power for an electric vehicle, an electric train, an electric bicycle, and a golf cart.

[0057] The current battery pack housing is provided with an explosion-proof valve, one end of the explosion-proof valve is in communication with the inside of the battery pack, the other end of the explosion-proof valve is in communication with the outside of the battery pack, if the internal pressure of the battery pack is greater than or equal to the preset pressure, the explosion-proof valve is opened to discharge the gas inside the battery pack to the outside of the battery pack, so as to reduce the internal air pressure of the battery pack.

[0058] In the related art, the explosion-proof valve has the problems of difficult installation and easy damage to the battery shell or the explosion-proof valve during installation, resulting in poor connection reliability between the explosion-proof valve and the battery shell.

[0059] The explosion-proof valve provided by the embodiment of the present application can be rotatably arranged on the main body, so that the main body is connected with the preset installation position through the buckle, thereby reducing the connection difficulty of the explosion-proof valve and the battery or the battery pack, and the through hole can make the air in the battery or the battery pack and the air in the external environment flow, so that the air in the battery or the battery pack can be guided to the external environment after passing through the through hole, thereby protecting the battery or the battery pack.

[0060] As shown in Figure 1 and Figure 2 The explosion-proof valve provided by the embodiment of the present application comprises a main body 100 and at least one buckle 200, the main body 100 is provided with a through hole 103, and the buckle 200 is rotatably arranged on the main body 100.

[0061] It should be noted that the explosion-proof valve has a plurality of different installation positions, which will be described in turn.

[0062] In one possible implementation, the explosion-proof valve is installed in the through hole 12 of the battery through the buckle 200, and the explosion-proof valve is used to guide the air in the battery to the external environment after passing through the through hole 103, so as to protect the battery.

[0063] In another possible implementation, the explosion-proof valve is installed in the through hole 12 of the battery pack 10 through the buckle 200, and the explosion-proof valve is used to guide the air in the battery pack 10 to the external environment after passing through the through hole 103, so as to protect the battery pack 10.

[0064] It can be understood that the installation position of the explosion-proof valve is not limited and can be selected according to actual use requirements.

[0065] It should be noted that in the case of mounting the explosion-proof valve and the battery or battery pack 10, part of the main body 100 isolates the battery or battery pack 10 from the external environment to waterproof and isolate the battery or battery pack 10; the through hole 103 is in communication with the external environment, and the high-pressure gas in the battery or battery pack 10 can be guided to the external environment through the through hole 103, thereby protecting the battery pack 10 from explosion.

[0066] As shown in Figure 3 and Figure 4 It should be noted that the buckle 200 provided by the embodiments of the present application includes a buckle arm 201 and a buckle claw 202, and the buckle claw 202 is connected to the main body 100 through the buckle arm 201.

[0067] It should be noted that the buckle claw 202 is used to connect with the through hole 12 of the battery or battery pack 10.

[0068] It can be understood that the buckle arm 201 is used to pass through the through hole 12, so that the buckle claw 202 can be connected with the through hole 12 of the battery pack 10, which has the advantage of easy installation.

[0069] It should be noted that the buckle arm 201 has a fracture point, and the cross-sectional area of the buckle arm 201 at the fracture point is smaller than that of the buckle arm 201 at other positions. The fracture point is configured such that, along the extension direction of the buckle arm 201, the fracture point is located at the smallest cross section of the buckle arm 201.

[0070] It can be understood that the cross-sectional area of the buckle arm 201 at the fracture point is smaller than that of the buckle arm 201 at other positions, so that the fracture point is more likely to break relative to other positions of the buckle arm 201, thereby improving the safety performance of the buckle arm 201.

[0071] It should be noted that the maximum compressive strength of the fracture point is smaller than that of the other positions of the buckle arm 201, so that the fracture point is more likely to break relative to the other positions of the buckle arm 201, thereby improving the safety performance of the buckle arm 201.

[0072] It should be noted that the fracture point has a plurality of different setting modes, which will be described in turn below.

[0073] In one possible implementation, along the extension direction of the buckle arm 201, the cross-sectional size of the fracture point is smaller than that of the other positions of the buckle arm 201.

[0074] It can be understood that the cross-sectional size of the fracture point is smaller than that of the other positions of the buckle arm 201, which will make the maximum compressive strength of the fracture point smaller than that of the other positions of the buckle arm 201, so that the fracture point is more likely to break relative to the other positions of the buckle arm 201, thereby improving the safety performance of the buckle arm 201.

[0075] In another possible implementation, the cross-sectional size of the breaking point is smaller than the cross-sectional size of other positions of the clamping arm 201 along the extending direction of the clamping arm 201.

[0076] It can be understood that the cross-sectional size of the breaking point is smaller than the cross-sectional size of other positions of the clamping arm 201, so that the maximum compressive strength of the breaking point is smaller than the maximum compressive strength of other positions of the clamping arm 201, thereby making the breaking point more likely to break than other positions of the clamping arm 201, and improving the safety performance of the clamping arm 201.

[0077] It can be understood that the setting mode of the breaking point is not limited, and can be selected according to actual use requirements.

[0078] It can be understood that the specific setting mode of the breaking point is not limited, and can be selected according to actual use requirements.

[0079] The clasp 200 provided by the embodiment of the present application is provided in plurality, and the plurality of clasps 200 are arranged in a ring shape and at intervals.

[0080] It can be understood that increasing the number of the clasp 200 can improve the connection strength between the explosion-proof valve and the battery or the battery pack 10, so as to reduce the occurrence of the explosion-proof valve falling off relative to the battery or the battery pack 10, thereby prolonging the safety performance of the explosion-proof valve and the battery or the battery pack 10.

[0081] It should be noted that the number of the clasp 200 has various different setting modes, and the number of the clasp 200 will be exemplarily described below.

[0082] In one possible implementation, the clasp 200 is provided in three, and the three clasps 200 are arranged in a ring shape and at intervals on the main body 100.

[0083] It can be understood that the three clasps 200 can balance the connection force between the explosion-proof valve and the battery or the battery pack 10, thereby improving the stability between the explosion-proof valve and the battery or the battery pack 10, so as to reduce the occurrence of the explosion-proof valve falling off relative to the battery or the battery pack 10, thereby improving the stability performance of the connection between the explosion-proof valve and the battery pack 10.

[0084] In another possible implementation, the clasp 200 is provided in four, and the four clasps 200 are arranged in a ring shape and at intervals on the main body 100.

[0085] It can be understood that the four buckles 200 can balance the connection force between the explosion-proof valve and the battery or battery pack 10, thereby improving the connection strength between the explosion-proof valve and the battery or battery pack 10, and increasing the contact area between the buckle 200 and the battery or battery pack 10, so as to reduce the occurrence of the explosion-proof valve falling off relative to the battery or battery pack 10, thereby prolonging the safety performance of the explosion-proof valve and the battery pack 10.

[0086] It can be understood that the number of buckles 200 is not limited in the setting mode, and can be selected according to actual use requirements.

[0087] The buckle 200 provided by the embodiment of the application comprises a knob 203, the knob 203 is connected with the clamping arm 201, and the knob 203 is located on the side of the clamping arm 201 away from the clamping jaw 202; the main body 100 is provided with a connecting hole 105, the clamping arm 201 penetrates the connecting hole 105 and is connected with the knob 203; the knob 203 is used to drive the clamping arm 201 to rotate the clamping jaw 202 relative to the main body 100.

[0088] It should be noted that the battery or battery pack 10 is provided with a through hole 12, the through hole 12 is used to connect with the buckle 200, so that the explosion-proof valve is installed on the battery or battery pack 10 through the buckle 200; when the buckle 200 penetrates into the through hole 12, the clamping jaw 202 is arranged to be close to the axis position of the through hole 12 and is spaced apart from the through hole 12; when the buckle 200 is installed in the through hole 12, the clamping arm 201 rotates relative to the main body 100 and drives the clamping jaw 202 to rotate to the axis position away from the connecting hole 105, so as to be connected to the through hole 12.

[0089] It can be understood that the knob 203 can provide a holding area for the buckle 200, so as to facilitate the operator to position and rotate the buckle 200, so as to reduce the difficulty of dismounting and installing the explosion-proof valve and the battery or battery pack 10, and improve the dismounting and installing efficiency of the explosion-proof valve.

[0090] It can be understood that the knob 203 can be driven by the first external force to rotate relative to the main body 100, and drive the clamping arm 201 to rotate relative to the main body 100, so as to drive the clamping jaw 202 to connect with the battery or battery pack 10, thereby installing the main body 100 to the battery or battery pack 10, so as to realize the installation of the explosion-proof valve and the battery or battery pack 10.

[0091] It can be understood that the knob 203 can be driven by the second external force to rotate relative to the main body 100, and drive the clamping arm 201 to rotate relative to the main body 100, so as to drive the clamping jaw 202 to be separated from the battery or battery pack 10, thereby dismounting the main body 100 from the battery or battery pack 10, so as to realize the dismounting of the explosion-proof valve and the battery or battery pack 10.

[0092] It should be noted that the first external force and the second external force are in opposite directions.

[0093] It should be noted that the explosion-proof valve provided by the embodiment of the present application further comprises a first sealing ring 300, and the first sealing ring 300 is sleeved on the main body 100.

[0094] It should be noted that in the case where the explosion-proof valve is connected with the battery or the battery pack 10, the first sealing ring 300 is sealingly connected with the battery or the battery pack 10.

[0095] It can be understood that the setting of the first sealing ring 300 can isolate the air or water in the external environment from entering the battery or the battery pack 10 through the main body 100, thereby improving the safety performance of the explosion-proof valve and protecting the battery or the battery pack 10.

[0096] It should be noted that the first sealing ring 300 has a plurality of different setting modes, and the setting modes of the first sealing ring 300 will be illustrated in turn below.

[0097] In a feasible implementation, the first sealing ring 300 is a first rubber ring, the inner ring of the first rubber ring is sleeved on the outer peripheral wall of the main body 100, and part of the outer ring of the first rubber ring is sealingly connected with the battery or the battery pack 10. The first rubber ring can block the water or sand in the external environment from entering the battery pack 10 through the gap between the connection of the main body 100 and the battery or the battery pack 10, thereby protecting the battery or the battery pack 10.

[0098] In a feasible implementation, the first sealing ring 300 is a first silicon rubber ring, the inner ring of the first silicon rubber ring is sleeved on the outer peripheral wall of the main body 100, and part of the outer ring of the first silicon rubber ring is sealingly connected with the battery or the battery pack 10. The first silicon rubber ring can block the water or sand in the external environment from entering the battery pack 10 through the gap between the connection of the main body 100 and the battery or the battery pack 10, thereby protecting the battery or the battery pack 10, and the first silicon rubber ring has aging resistance and weather resistance, which can prolong the service life of the first silicon rubber ring and prolong the service life of the explosion-proof valve.

[0099] It can be understood that the setting mode of the first sealing ring 300 is not limited and can be selected according to actual use requirements.

[0100] As shown in Figure 5 The explosion-proof valve provided by the embodiment of the present application further comprises at least one second sealing ring 400, the second sealing ring 400 is arranged on the main body 100, and the second sealing ring 400 surrounds the outer peripheral wall of the buckle 200.

[0101] It can be understood that the second sealing ring 400 can prevent the air or water in the external environment from entering the battery or battery pack 10 through the connection between the buckle 200 and the main body 100, thereby improving the safety performance of the explosion-proof valve and protecting the battery or battery pack 10.

[0102] It should be noted that the second sealing ring 400 is interference filled between the buckle 200 and the main body 100 to improve the sealing effect of the second sealing ring 400.

[0103] It should be noted that the second sealing ring 400 has a plurality of different setting modes, and the setting modes of the second sealing ring 400 will be described in turn.

[0104] In a possible implementation, the second sealing ring 400 is a second rubber ring, the inner ring of the second rubber ring is sleeved on the outer peripheral wall of the buckle 200, and part of the outer ring of the second rubber ring is sealingly connected with the main body 100. The second rubber ring can prevent water or sand in the external environment from entering the battery or battery pack 10 through the gap between the connection of the buckle 200 and the main body 100, thereby protecting the battery or battery pack 10.

[0105] In a possible implementation, the second sealing ring 400 is a second silicon rubber ring, the inner ring of the second silicon rubber ring is sleeved on the outer peripheral wall of the buckle 200, and part of the outer ring of the second silicon rubber ring is sealingly connected with the main body 100. The second silicon rubber ring can prevent water or sand in the external environment from entering the battery or battery pack 10 through the gap between the connection of the buckle 200 and the main body 100, thereby protecting the battery or battery pack 10, and the second silicon rubber ring has aging resistance and weather resistance, which can prolong the service life of the second silicon rubber ring and prolong the service life of the explosion-proof valve.

[0106] It can be understood that the setting mode of the second sealing ring 400 is not limited and can be selected according to actual use requirements.

[0107] It should be noted that a plurality of buckles 200 are provided, a plurality of second sealing rings 400 are provided, and the plurality of buckles 200 and the plurality of second sealing rings 400 are one-to-one corresponding.

[0108] It can be understood that the plurality of buckles 200 and the plurality of second sealing rings 400 are one-to-one corresponding, which can improve the sealing effect between the buckle 200 and the main body 100, improve the sealing effect between the explosion-proof valve and the battery or battery pack 10, thereby reducing the occurrence of water in the external environment entering the battery or battery pack 10, and protecting the battery or battery pack 10.

[0109] It should be noted that the number of buckles 200 is not limited, and the number of second sealing rings 400 is not limited. The number of second sealing rings 400 is described in turn as follows.

[0110] In one possible implementation, when the buckles 200 are provided in three, the second sealing rings 400 are provided in three, and the buckles 200 and the second sealing rings 400 are one-to-one correspondence.

[0111] It can be understood that the second sealing ring 400 is provided in three, and the three sealing rings can seal the connection position between the buckle 200 and the main body 100, so as to prevent water in the external environment from entering the battery or the battery pack 10, thereby protecting the battery pack 10.

[0112] In another possible implementation, when the buckles 200 are provided in four, the second sealing rings 400 are provided in four, and the buckles 200 and the second sealing rings 400 are one-to-one correspondence.

[0113] It can be understood that the second sealing ring 400 is provided in four, and the four sealing rings can seal the connection position between the buckle 200 and the main body 100, so as to prevent water in the external environment from entering the battery or the battery pack 10, thereby protecting the battery or the battery pack 10.

[0114] It can be understood that the number of buckles 200 is not limited, and the number of second sealing rings 400 is not limited. The number of second sealing rings 400 is described in turn as follows.

[0115] As shown in FIG. 1, Figure 6 The explosion-proof valve provided by the embodiment of the present application further includes a waterproof and breathable film 104, and the waterproof and breathable film 104 covers the through hole 103.

[0116] It should be noted that the through hole 103 and the waterproof and breathable film 104 can make the air in the battery pack 10 and the air in the external environment flow, so that the air in the battery or the battery pack 10 can be guided to the external environment through the through hole 103 and the waterproof and breathable film 104. The waterproof and breathable film 104 can block water or sand in the external environment, thereby reducing the occurrence of water or sand in the external environment entering the inside of the battery or the battery pack 10 through the through hole 103, thereby protecting the battery or the battery pack 10.

[0117] The main body 100 provided by the embodiment of the present application comprises a first shell 101 and a second shell 102, the first shell 101 and the second shell 102 are connected, the first shell 101 and the second shell 102 enclose a protection cavity, and a through hole 103 is arranged on the first shell 101.

[0118] It should be noted that the first shell 101 is located on the side of the second shell 102 close to the battery or the battery pack 10 and abuts against the battery pack 10.

[0119] It can be understood that the first shell 101 is used to be connected with the battery or the battery pack 10, the second shell 102 can block the impact of solids in the external environment on the waterproof and breathable film 104, and the second shell 102 can block water or sand in the external environment to prolong the service life of the waterproof and breathable film 104, thereby protecting the battery or the battery pack 10 and prolonging the service life of the explosion-proof valve.

[0120] It should be noted that the first shell 101 and the second shell 102 are connected through the buckle 200 and the clamping groove, the buckle 200 is arranged on the first shell 101, the clamping groove is arranged on the second shell 102, and the buckle 200 and the clamping groove are arranged in a matched mode.

[0121] It should be noted that the gas in the protection cavity can pass through the installation gap between the first shell 101 and the second shell 102 and then be guided to the external environment, so as to play a pressure relief role.

[0122] It should be noted that the through hole 103 is located at the center of the main body 100, the plurality of buckles 200 are distributed along the circumference of the through hole 103 at intervals, and the buckle 200 surrounds the outer periphery of the through hole 103.

[0123] It can be understood that the through hole 103 is located at the center of the main body 100, which can increase the discharge efficiency between the air in the battery or the battery pack 10 and the through hole 103, the plurality of buckles 200 are distributed along the circumference of the through hole 103 at intervals, and the buckle 200 surrounds the outer periphery of the through hole 103, which can reduce the occurrence of stress concentration of the main body 100, thereby prolonging the service life of the main body 100.

[0124] The embodiment of the present application provides a battery pack 10, which comprises a battery shell 11, and an explosion-proof valve arranged on the battery shell 11; the battery shell 11 has a through hole 12, and part of the explosion-proof valve passes through the through hole 12 and is connected to the battery shell 11; in the case that the explosion-proof valve is arranged on the battery shell 11, the main body 100 of the explosion-proof valve and the battery pack 10 enclose a sealed cavity, part of the buckle 200 of the explosion-proof valve passes through the through hole 12 and is connected and fixed with the battery shell 11.

[0125] It can be understood that the part of the buckle 200 passes through the through hole 12 on the battery pack 10, the buckle 200 is connected with the battery shell 11, the connection difficulty of the buckle 200 and the through hole 12 on the battery pack 10 can be reduced, the installation and disassembly efficiency of the main body 100 and the battery pack 10 can be improved, the through hole 12 can be plugged by the main body 100 to waterproof the battery pack 10, and the battery shell 11 or the explosion-proof valve will not be damaged during installation. After the installation is completed, the explosion-proof valve and the battery pack 10 can be stably connected, so that the connection reliability and connection strength of the explosion-proof valve and the battery pack 10 are improved.

[0126] It should be noted that when the pressure in the sealed cavity is greater than or equal to the maximum compression strength of the buckle 200, the buckle 200 breaks, so that the main body 100 is separated from the battery pack 10, and the through hole 12 is exposed.

[0127] It can be understood that if the internal pressure in the sealed cavity is greater than or equal to the maximum compression strength of the buckle 200, the buckle 200 breaks, the main body 100 is separated from the battery pack 10, and the through hole 12 is exposed, so that the through hole 12 is in communication with the external environment, thereby accelerating the outflow of the pressure in the sealed cavity, so as to protect the battery pack 10. Or, if the internal pressure in the sealed cavity is greater than or equal to the maximum compression strength of the buckle 200, the buckle 200 breaks, and the internal pressure in the sealed cavity continues to increase, which will cause the main body 100 to be separated from the through hole 12 under the push of the internal pressure in the sealed cavity. The explosion-proof valve is separated from the battery pack 10, so that the through hole 12 is in communication with the external environment, thereby accelerating the outflow of the pressure in the sealed cavity, so as to protect the battery pack 10.

[0128] The application also provides a power consumption device, which comprises a power consumption device and the battery pack 10 described in any of the above embodiments, and the battery pack 10 is used to provide electric energy for the power consumption device.

[0129] The power consumption device in the embodiment of the application can be a vehicle, for example, the vehicle can be a fuel automobile, a gas automobile or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid electric automobile or a range extended automobile. Correspondingly, the power consumption device can be a driving mechanism of the vehicle, or a control system of the vehicle.

[0130] In addition, the power consumption device can also be other energy storage devices, such as a mobile phone, a portable device, a notebook computer, an electric toy, an electric tool, a ship and a spacecraft, etc. The spacecraft can include an airplane, a rocket, a space shuttle or a spacecraft.

[0131] Since the power consumption device in the embodiment comprises the battery pack 10 described in any of the above embodiments, the power consumption device comprises the structure and advantages of the battery pack 10, and the embodiment will not be described here.

[0132] The embodiments or examples in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts between embodiments can be mutually referred to.

[0133] It should be noted that the embodiments referred to in the specification as "one embodiment", "an embodiment", "example embodiment", "some embodiments" and the like can include a specific feature, structure or characteristic, but not necessarily every embodiment. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments that are explicitly or implicitly described.

[0134] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and such modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An explosion-proof valve, characterized in that: include: A main body (100), wherein a through hole (103) is formed on the main body (100); At least one buckle (200) is rotatably disposed on the main body (100); the buckle (200) includes a knob (203), the knob (203) is connected to the clamping arm (201), and the knob (203) is located on a side of the clamping arm (201) away from the clamping claw (202); The main body (100) is provided with a connecting hole (105), the clamping arm (201) passes through the connecting hole (105) and is connected to the knob (203); the knob (203) is used to drive the clamping arm (201) to rotate the clamping claw (202) relative to the main body (100).

2. The explosion-proof valve according to claim 1, characterized in that: A plurality of the buckles (200) are provided, and the plurality of buckles (200) are arranged around and at intervals.

3. The explosion-proof valve according to claim 1, characterized in that: The buckle (200) comprises a clamping arm (201) and a clamping claw (202), and the clamping claw (202) is connected to the main body (100) via the clamping arm (201).

4. The explosion-proof valve according to claim 1, characterized in that: Also includes: The first sealing ring (300) is sleeved on the main body (100).

5. The explosion-proof valve according to claim 1, characterized in that: Also includes: At least one second sealing ring (400) is provided on the main body (100), and the second sealing ring (400) is arranged around the outer peripheral wall of the buckle (200).

6. The explosion-proof valve according to claim 5, characterized in that: A plurality of the buckles (200) are provided, and a plurality of the second sealing rings (400) are provided, and the plurality of the buckles (200) and the plurality of the second sealing rings (400) are provided in a one-to-one correspondence.

7. An explosion-proof valve according to any one of claims 1 to 6, characterized in that: Also includes: A waterproof and breathable membrane (104), wherein the waterproof and breathable membrane (104) covers the through hole (103).

8. An explosion-proof valve according to any one of claims 1 to 6, characterized in that: The main body (100) comprises: a first shell (101) and a second shell (102), wherein the first shell (101) and the second shell (102) are connected; The first shell (101) and the second shell (102) enclose a protective cavity, and the through hole (103) is provided in the first shell (101).

9. An explosion-proof valve according to any one of claims 1 to 6, characterized in that: The clamp arm (201) has a breaking point, and the cross-sectional area of ​​the clamp arm (201) at the breaking point is smaller than the cross-sectional area of ​​the clamp arm (201) at other positions.

10. An explosion-proof valve according to any one of claims 1 to 6, characterized in that: The through hole (103) is located at the center of the main body (100), and a plurality of the buckles (200) are distributed at intervals along the circumference of the through hole (103), and the buckles (200) surround the outer circumference of the through hole (103).

11. A battery pack, characterized in that: Comprising a battery housing (11) and an explosion-proof valve according to any one of claims 1 to 10, wherein the explosion-proof valve is provided on the battery housing (11); The battery housing (11) has a through hole (12), and a portion of the explosion-proof valve passes through the through hole (12) and is connected to the battery housing (11); When the explosion-proof valve is provided in the battery housing (11), the main body (100) of the explosion-proof valve and the battery pack (10) enclose a sealed cavity, and a portion of the buckle (200) of the explosion-proof valve passes through the through hole (12) and is connected and fixed to the battery housing (11).

12. The battery pack according to claim 11, characterized in that: When the pressure in the sealed cavity is greater than or equal to the maximum compressive strength of the buckle (200), the buckle (200) breaks, so that the main body (100) is separated from the battery pack (10) and the through hole (12) is exposed.

13. An electrical device, characterized in that: It comprises an electrical device and a battery pack according to claim 11 or 12, wherein the battery pack (10) is used to provide electrical energy to the electrical device.

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