Explosion-proof valve, battery pack and electric equipment

Abstract

The invention provides an anti-explosion valve, a battery pack and electric equipment. The anti-explosion valve comprises a main body and at least one buckle, a through hole is formed in the main body, and the buckle is rotatably arranged on the main body. The problems that an anti-explosion valve is difficult to install, a battery shell or the anti-explosion valve is prone to being damaged in the installation process, and the reliability of connection between the anti-explosion valve and the battery shell is poor are solved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of battery technology, and in particular to a battery pack and an electrical device. Background Art

[0002] The battery is the power source that provides power for the tool, mostly referring to the storage battery or rechargeable battery that powers electric cars, electric trains, electric bicycles, and golf carts.

[0003] The current battery pack is provided with an explosion-proof valve on the shell, one end of the explosion-proof valve is connected to the interior of the battery pack, and the other end of the explosion-proof valve is connected to 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 opens to discharge the gas inside the battery pack to the outside of the battery pack to reduce the internal air pressure of the battery pack.

[0004] In the related art, the explosion-proof valve is difficult to install and the battery housing or the explosion-proof valve is easily damaged during the installation process, resulting in poor connection reliability between the explosion-proof valve and the battery housing. Summary of the invention

[0005] The embodiments of the present application provide an explosion-proof valve, a battery pack, and an electrical device, which can solve the problem that the explosion-proof valve is difficult to install and the battery housing or the explosion-proof valve is easily damaged during the installation process, resulting in poor connection reliability between the explosion-proof valve and the battery housing.

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

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

[0008] A main body, wherein a through hole is formed on the main body;

[0009] At least one buckle is rotatably arranged on the main body.

[0010] It can be understood that the buckle is rotatably provided on the main body, so that the main body can be connected to the preset installation position through the buckle, thereby reducing the difficulty of connecting the explosion-proof valve with the battery or battery pack. The setting of the through hole can allow the air in the battery or battery pack to convect 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, thereby providing safety protection for the battery or battery pack.

[0011] In a feasible implementation manner, a plurality of buckles are provided, and the plurality of buckles are arranged around and at intervals.

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

[0013] In a feasible implementation manner, the buckle includes a clamping arm and a clamping claw, and the clamping claw 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 claw can be connected to the through hole of the battery or battery pack, which has the advantage of easy installation.

[0015] In a feasible embodiment, the buckle includes a knob, which is connected to the clamping arm, and the knob is located on a side of the clamping arm away from the clamping claw;

[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 make the clamping claw rotate relative to the main body.

[0017] It is understandable that the setting of the knob can provide a holding area for the buckle to facilitate the operator to position and rotate the buckle, thereby reducing the difficulty of disassembly and installation of the explosion-proof valve and the battery or battery pack, and improving the efficiency of disassembly and installation of the explosion-proof valve.

[0018] In a feasible implementation, it also includes:

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

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

[0021] In a feasible implementation, it also includes:

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

[0023] It can be understood that the provision of the second sealing ring can prevent 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 to safely protect the battery or battery pack.

[0024] In a feasible implementation manner, 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 provided in a one-to-one correspondence.

[0025] It can be understood that multiple buckles and multiple second sealing rings are arranged in a one-to-one correspondence, which can improve the sealing effect between the buckles and the main body, so as to improve the sealing effect between the explosion-proof valve and the battery or battery pack, thereby reducing the occurrence of water from the external environment entering the battery or battery pack, so as to safely protect the battery or battery pack.

[0026] In a feasible implementation, it also includes:

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

[0028] It can be understood that the provision of the through hole and the waterproof breathable membrane can enable convection between the air in the battery or battery pack and 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 breathable membrane, and the provision of the waterproof breathable membrane can block water or mud in the external environment, thereby reducing the occurrence of water or mud in the external environment entering the battery or battery pack through the through hole, so as to safely protect the battery or battery pack.

[0029] In a feasible implementation manner, the main body includes: a first shell and a second shell, the first shell and the second shell are connected, the first shell and the second shell are enclosed to form a protection cavity, and the through hole is provided in the first shell.

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

[0031] In a feasible implementation, the clamp arm has a breaking point, and the cross-sectional area of ​​the clamp arm at the breaking point is smaller than the cross-sectional area of ​​the clamp arm at other positions.

[0032] It can be understood that the cross-sectional area of ​​the clamp arm at the breaking point is smaller than the cross-sectional area of ​​the rest of the clamp arm, so that the breaking point is easier to break than other positions of the clamp arm, thereby improving the safety performance of the clamp arm.

[0033] In a feasible implementation, the through hole is located at the center of the main body, and a plurality of buckles are distributed at intervals along the circumference of the through hole, and the buckles surround the outer circumference of the through hole.

[0034] It can be understood that the through hole is located at the center of the main body, which can increase the efficiency of the air discharge between the battery or battery pack and the through hole. The buckles are distributed at circumferential intervals along the through hole, and the buckles surround the outer circumference of the through hole, which can reduce the occurrence of stress concentration in the main body, thereby extending the service life of the main body.

[0035] A second aspect of an embodiment of the present application provides a battery pack, including a battery housing and an explosion-proof valve, wherein the explosion-proof valve is provided on the battery housing;

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

[0037] When the explosion-proof valve is arranged in the battery housing, the main body of the explosion-proof valve and the battery housing are combined to form a sealed cavity, and the buckle part of the explosion-proof valve passes through the through hole and is connected and fixed to the battery housing.

[0038] It can be understood that part of the buckle passes through the through hole on the battery pack, and the buckle is connected to the battery shell, which can reduce the difficulty of connecting the buckle and the through hole on the battery pack to improve the installation and disassembly efficiency of the main body and the battery pack. The main body can block the through hole to provide waterproof protection for the battery pack, and the battery shell or explosion-proof valve will not be damaged during the installation process. After the installation is completed, the explosion-proof valve and the battery pack can be stably connected to improve the connection reliability and connection strength between the explosion-proof valve and the battery pack.

[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 breaks, 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 breaks, the main body is separated from the battery pack, and the through hole is exposed, so that the through hole is connected to the external environment, thereby accelerating the leakage of the pressure in the sealed cavity to safely protect the battery pack; or, if the internal pressure in the sealed cavity is greater than or equal to the maximum compressive strength of the buckle, the buckle breaks, and the internal pressure in the sealed cavity continues to increase, which will cause the main body to separate from the through hole under the push of the internal pressure of the sealed cavity, so that the explosion-proof valve falls off relative to the battery pack, so that the through hole is connected to the external environment, thereby accelerating the leakage of the pressure in the sealed cavity to safely protect the battery pack.

[0041] A third aspect of an embodiment of the present application provides an electrical equipment, including an electrical device and a battery pack, wherein the battery pack is used to provide electrical energy to the electrical device.

[0042] In addition to the technical problems solved by the embodiments of the present application described above, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions, other technical problems that can be solved by the explosion-proof valve, battery pack and electrical equipment provided by the embodiments of the present application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0044] Figure 1 A schematic diagram of the connection structure between the explosion-proof valve and the battery pack provided in an embodiment of the present application;

[0045] Figure 2 A second schematic diagram of the connection structure between the explosion-proof valve and the battery pack provided in an embodiment of the present application;

[0046] Figure 3 The third schematic diagram of the connection structure between the explosion-proof valve and the battery pack provided in the embodiment of the present application;

[0047] Figure 4 A fourth schematic diagram of the connection structure between the explosion-proof valve and the battery pack provided in an embodiment of the present application;

[0048] Figure 5 A schematic diagram of the main structure of the first shell provided in an embodiment of the present application;

[0049] Figure 6 The second schematic diagram of the main structure of the first shell provided in the embodiment of the present application.

[0050] Description of reference numerals:

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

[0052] 200- buckle; 201- clamp arm; 202- clamp claw; 203- knob;

[0053] 300-first sealing ring;

[0054] 400-second sealing ring;

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

[0056] The battery is the power source that provides power for the tool, mostly referring to the storage battery or rechargeable battery that powers electric cars, electric trains, electric bicycles, and golf carts.

[0057] The current battery pack is provided with an explosion-proof valve on the shell, one end of the explosion-proof valve is connected to the interior of the battery pack, and the other end of the explosion-proof valve is connected to 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 opens to discharge the gas inside the battery pack to the outside of the battery pack to reduce the internal air pressure of the battery pack.

[0058] In the related art, the explosion-proof valve is difficult to install and the battery housing or the explosion-proof valve is easily damaged during the installation process, resulting in poor connection reliability between the explosion-proof valve and the battery housing.

[0059] The explosion-proof valve provided in the embodiment of the present application has a buckle rotatably arranged on the main body, which can enable the main body to be connected to a preset installation position through the buckle, thereby reducing the difficulty of connecting the explosion-proof valve to the battery or battery pack. The setting of the through hole can enable the air in the battery or battery pack to convect 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, thereby safely protecting the battery or battery pack.

[0060] like Figure 1 and Figure 2 As shown, the explosion-proof valve provided in the embodiment of the present application includes: 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 variety of different installation positions. The installation positions of the explosion-proof valve are described below with examples one by one.

[0062] In a feasible implementation manner, the explosion-proof valve is installed in the through hole 12 of the battery through the buckle 200. The explosion-proof valve is used to guide the air in the battery to the external environment through the through hole 103 to safely protect the battery.

[0063] In another feasible implementation, the explosion-proof valve is installed in the through hole 12 of the battery pack 10 via a buckle 200 , and the explosion-proof valve is used to guide the air in the battery pack 10 to the external environment through the through hole 103 to provide safety protection for the battery pack 10 .

[0064] It is understandable that there is no restriction on the installation position of the explosion-proof valve, and it can be selected according to actual use requirements.

[0065] It should be noted that, when the explosion-proof valve is installed with the battery or battery pack 10, part of the main body 100 isolates the battery or battery pack 10 from the external environment, so as to provide waterproof and isolation protection for the battery or battery pack 10; the through hole 103 is connected to 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 providing explosion-proof protection for the battery pack 10.

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

[0067] It should be noted that the 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 clamping arm 201 is used to pass through the through hole 12 so that the clamping claw 202 can be connected to the through hole 12 of the battery pack 10, which has the advantage of easy installation.

[0069] It should be noted 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 rest of the clamp arm 201. The breaking point is configured such that, along the extension direction of the clamp arm 201, the breaking point is located at the minimum cross-sectional area of ​​the clamp arm 201.

[0070] It is understandable that the cross-sectional area of ​​the clamp arm 201 at the breaking point is smaller than the cross-sectional area of ​​the rest of the clamp arm 201 , so that the breaking point is easier to break than other positions of the clamp arm 201 , thereby improving the safety performance of the clamp arm 201 .

[0071] It should be noted that the maximum compressive strength of the breaking point is smaller than the maximum compressive strength of other positions of the clamp arm 201 , so that the breaking point is easier to break than other positions of the clamp arm 201 , thereby improving the safety performance of the clamp arm 201 .

[0072] It should be noted that there are many different ways to set the breakpoints, and the following examples will be used to illustrate the ways to set the breakpoints.

[0073] In a feasible implementation, along the extension direction of the clamp arm 201 , the cross-sectional dimension of the breaking point is smaller than the cross-sectional dimensions at other positions of the clamp arm 201 .

[0074] 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 clamp arm 201, which will make the maximum compressive strength of the breaking point smaller than the maximum compressive strength of other positions of the clamp arm 201, thereby making the breaking point easier to break relative to other positions of the clamp arm 201, thereby improving the safety performance of the clamp arm 201.

[0075] In another feasible implementation manner, along the extension direction of the vertical clamp arm 201 , the cross-sectional dimension of the breaking point is smaller than the cross-sectional dimensions at other positions of the clamp 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 clamp arm 201, which will make the maximum compressive strength of the breaking point smaller than the maximum compressive strength of other positions of the clamp arm 201, thereby making the breaking point easier to break relative to other positions of the clamp arm 201, thereby improving the safety performance of the clamp arm 201.

[0077] It is understandable that there is no restriction on the setting method of the breakpoint, and it can be selected according to actual usage requirements.

[0078] It is understandable that there is no restriction on the specific setting method of the breakpoint, and it can be selected according to actual usage requirements.

[0079] The embodiment of the present application provides a plurality of buckles 200 , which are arranged around and at intervals.

[0080] It is understandable that increasing the number of buckles 200 can improve the connection strength between the explosion-proof valve and the battery or battery pack 10 to reduce the occurrence of the explosion-proof valve falling off relative to the battery or battery pack 10, thereby extending the safety performance of the explosion-proof valve and the battery or battery pack 10.

[0081] It should be noted that there are many different ways to set the number of buckles 200. The following will illustrate the setting number of buckles 200 in turn with examples.

[0082] In a feasible implementation manner, three buckles 200 are provided, and the three buckles 200 are arranged around and at intervals on the main body 100 .

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

[0084] In another feasible implementation manner, four buckles 200 are provided, and the four buckles 200 are arranged around and at intervals on the main body 100 .

[0085] It can be understood that providing 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 can increase the contact area between the buckle 200 and the battery or battery pack 10 to reduce the occurrence of the explosion-proof valve falling off relative to the battery or battery pack 10, thereby extending the safety performance of the explosion-proof valve and the battery pack 10.

[0086] It is understandable that there is no restriction on the number of buckles 200, and the number can be selected according to actual usage requirements.

[0087] The buckle 200 provided in the embodiment of the present application includes a knob 203, which is connected to the clamping arm 201 and is located on the side of the clamping arm 201 away from the claw 202; a connecting hole 105 is provided on the main body 100, and 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 make the claw 202 rotate relative to the main body 100.

[0088] It should be noted that a through hole 12 is provided on the battery or battery pack 10, and 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 extends into the through hole 12, the claw 202 faces the axial position close to the connecting hole 12 and is spaced apart from the through hole 12; when the buckle 200 is installed in the through hole 12, the clamp arm 201 rotates relative to the main body 100, and drives the claw 202 to rotate toward the axial position away from the connecting hole 105 to connect to the through hole 12.

[0089] It is understandable that the setting of the knob 203 can provide a gripping area for the buckle 200 to facilitate the operator to position and rotate the buckle 200, thereby reducing the difficulty of disassembly and installation of the explosion-proof valve and the battery or battery pack 10, thereby improving the efficiency of disassembly and installation of the explosion-proof valve.

[0090] It can be understood that the knob 203 can rotate relative to the main body 100 under the drive of the first external force, and drive the clamping arm 201 to rotate relative to the main body 100, so as to drive the clamping claw 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 is understandable that the knob 203 can rotate relative to the main body 100 under the drive of the second external force, and drive the clamping arm 201 to rotate relative to the main body 100, so as to drive the clamping claw 202 to disengage from the battery or battery pack 10, thereby disassembling the main body 100 and the battery or battery pack 10 to achieve the disassembly 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 in the embodiment of the present application further includes a first sealing ring 300 , and the first sealing ring 300 is sleeved on the main body 100 .

[0094] It should be noted that, when the explosion-proof valve is connected to the battery or the battery pack 10 , the first sealing ring 300 is sealed and connected to the battery or the battery pack 10 .

[0095] It is understandable that the provision of the first sealing ring 300 can prevent air or water in the external environment from entering the battery or battery pack 10 after passing through the main body 100, thereby improving the safety performance of the explosion-proof valve to provide safety protection for the battery or battery pack 10.

[0096] It should be noted that the first sealing ring 300 has a variety of different configurations, and the configurations of the first sealing ring 300 are described below in turn with examples.

[0097] In a feasible embodiment, 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 the outer ring of the first rubber ring is sealed and connected to the battery or battery pack 10. The first rubber ring can prevent water or mud from the external environment from entering the battery pack 10 through the gap at the connection between the main body 100 and the battery or battery pack 10, so as to safely protect the battery or battery pack 10.

[0098] In a feasible embodiment, the first sealing ring 300 is a first silicone rubber ring, the inner ring of the first silicone rubber ring is sleeved on the outer peripheral wall of the main body 100, and the outer ring of the first silicone rubber ring is sealed and connected to the battery or battery pack 10. The first silicone rubber ring can prevent water or mud from the external environment from entering the battery pack 10 through the gap at the connection between the main body 100 and the battery or battery pack 10, so as to safely protect the battery or battery pack 10, and the first silicone rubber ring is aging-resistant and weather-resistant, which can extend the service life of the first silicone rubber ring, thereby extending the service life of the explosion-proof valve.

[0099] It is understandable that there is no limitation on the configuration of the first sealing ring 300, and it can be selected according to actual usage requirements.

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

[0101] It can be understood that the setting of the second sealing ring 400 can prevent 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 to safely protect the battery or battery pack 10.

[0102] It should be noted that the second sealing ring 400 achieves interference filling 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 variety of different configurations, and the configurations of the second sealing ring 400 are described below in turn with examples.

[0104] In a feasible embodiment, 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 the outer ring of the second rubber ring is sealed and connected to the main body 100. The second rubber ring can prevent water or mud from the external environment from entering the battery or battery pack 10 through the gap at the connection between the buckle 200 and the main body 100, so as to safely protect the battery or battery pack 10.

[0105] In a feasible embodiment, the second sealing ring 400 is a second silicone rubber ring, the inner ring of the second silicone rubber ring is sleeved on the outer peripheral wall of the buckle 200, and the outer ring of the second silicone rubber ring is sealed and connected to the main body 100. The second silicone rubber ring can prevent water or mud from the external environment from entering the battery or battery pack 10 through the gap at the connection between the buckle 200 and the main body 100, so as to safely protect the battery or battery pack 10, and the second silicone rubber ring is resistant to aging and weathering, which can extend the service life of the second silicone rubber ring, thereby extending the service life of the explosion-proof valve.

[0106] It is understandable that there is no limitation on the configuration of the second sealing ring 400, and it can be selected according to actual usage requirements.

[0107] It should be noted that, there are multiple buckles 200 and multiple second sealing rings 400, and the multiple buckles 200 and the multiple second sealing rings 400 are arranged in a one-to-one correspondence.

[0108] It can be understood that the one-to-one arrangement of multiple buckles 200 and multiple second sealing rings 400 can improve the sealing effect between the buckle 200 and the main body 100, so as to improve the sealing effect between the explosion-proof valve and the battery or battery pack 10, thereby reducing the occurrence of water from the external environment entering the battery or battery pack 10, so as to safely protect the battery or battery pack 10.

[0109] It should be noted that, when there is no restriction on the number of buckles 200, there is no restriction on the number of second sealing rings 400. The following provides examples of the number of second sealing rings 400.

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

[0111] It is understandable that three second sealing rings 400 are provided, and the three sealing rings can respectively seal the connection position between the buckle 200 and the main body 100 to prevent water from the external environment from entering the battery or the battery pack 10, so as to safely protect the battery pack 10.

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

[0113] It is understandable that four second sealing rings 400 are provided, and the four sealing rings can respectively seal the connection positions between the buckle 200 and the main body 100 to prevent water from the external environment from entering the battery or battery pack 10, so as to safely protect the battery or battery pack 10.

[0114] It can be understood that when there is no restriction on the setting method of the number of buckles 200, there is no restriction on the setting number of second sealing rings 400, and it can be selected according to actual usage requirements. It is only necessary to ensure that the number of buckles 200 and the setting number of second sealing rings 400 are the same, and one buckle 200 is set corresponding to one second sealing ring 400.

[0115] like Figure 6 As shown, the explosion-proof valve provided in the embodiment of the present application further includes: a waterproof and breathable membrane 104 , and the waterproof and breathable membrane 104 covers the through hole 103 .

[0116] It should be noted that the provision of the through hole 103 and the waterproof breathable membrane 104 can allow the air in the battery pack 10 to convect with the air in the external environment, so that the air in the battery or battery pack 10 can be guided to the external environment after passing through the through hole 103 and the waterproof breathable membrane 104, and the provision of the waterproof breathable membrane 104 can block water or mud in the external environment, thereby reducing the occurrence of water or mud in the external environment entering the battery or battery pack 10 through the through hole 103, thereby providing safety protection for the battery or battery pack 10.

[0117] The main body 100 provided in the embodiment of the present application includes: 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 are enclosed to form a protection cavity, and the through hole 103 is provided in the first shell 101 .

[0118] It should be noted that the first housing 101 is located on a side of the second housing 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 connect with the battery or battery pack 10, and the setting of the second shell 102 can block the impact of solids in the external environment on the waterproof breathable membrane 104, thereby safely protecting the waterproof breathable membrane 104, and the setting of the second shell 102 can block water or mud in the external environment to extend the service life of the waterproof breathable membrane 104, thereby safely protecting the battery or battery pack 10, and can extend 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 by the buckle 200 and the slot. The first shell 101 is provided with the buckle 200, and the second shell 102 is provided with the slot. The buckle 200 and the slot are provided in a coordinated manner.

[0121] It should be noted that the gas in the protection cavity can be guided to the external environment after passing through the installation gap between the first shell 101 and the second shell 102 to achieve the purpose of pressure relief.

[0122] It should be noted that the through hole 103 is located at the center of the main body 100 , and the plurality of 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 .

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

[0124] An embodiment of the present application provides a battery pack 10, including a battery shell 11, and an explosion-proof valve is 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; when the explosion-proof valve is arranged in the battery shell 11, the main body 100 of the explosion-proof valve and the battery pack 10 are enclosed to form a sealed cavity, and part of the buckle 200 of the explosion-proof valve passes through the through hole 12 and is connected and fixed to the battery shell 11.

[0125] It can be understood that part of the buckle 200 passes through the through hole 12 on the battery pack 10, and the buckle 200 is connected to the battery shell 11, which can reduce the difficulty of connecting the buckle 200 with the through hole 12 on the battery pack 10, so as to improve the installation and disassembly efficiency of the main body 100 and the battery pack 10. The main body 100 can block the through hole 12 to provide waterproof protection for the battery pack 10, and will not cause damage to the battery shell 11 or the explosion-proof valve during the installation process. After the installation is completed, the explosion-proof valve and the battery pack 10 can be stably connected to improve the connection reliability and connection strength between the explosion-proof valve and the battery pack 10.

[0126] It should be noted 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.

[0127] 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 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 connected to the external environment, thereby accelerating the leakage of the pressure in the sealed cavity to safely protect the battery pack 10; or, if the internal pressure in the sealed cavity is greater than or equal to the maximum compressive 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 of the sealed cavity, so that the explosion-proof valve falls off relative to the battery pack 10, so that the through hole 12 is connected to the external environment, thereby accelerating the leakage of the pressure in the sealed cavity to safely protect the battery pack 10.

[0128] An embodiment of the present application further provides an electrical device, including an electrical device and a battery pack 10 as described in any of the above embodiments, wherein the battery pack 10 is used to provide electrical energy to the electrical device.

[0129] The electrical equipment in the embodiments of the present application may be a vehicle, for example, a vehicle may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. Accordingly, the electrical device may be a driving mechanism of the vehicle or a control system of the vehicle.

[0130] In addition, the electrical equipment may also be other energy storage devices, such as mobile phones, portable devices, laptop computers, electric toys, electric tools, ships and spacecraft, etc., among which the spacecraft may include airplanes, rockets, space shuttles or spacecraft.

[0131] Since the electric device in this embodiment includes the battery pack 10 described in any of the above embodiments, the structure and beneficial effects of the electric device including the battery pack 10 will not be described in detail in this embodiment.

[0132] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.

[0133] It should be noted that the embodiments represented by "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing specific features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments that are explicitly or not explicitly described.

[0134] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to 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 arranged on the main body (100).

2. An 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. An explosion-proof valve according to claim 3, characterized in that: The buckle (200) comprises 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 connection hole (105), the clamping arm (201) passes through the connection hole (105) and is connected to the knob (203); the knob (203) is used to drive the clamping arm (201) to make the clamping claw (202) rotate relative to the main body (100).

5. 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).

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

7. An explosion-proof valve according to claim 6, 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.

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

9. An explosion-proof valve according to any one of claims 1 to 7, 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).

10. An explosion-proof valve according to any one of claims 1 to 7, characterized in that: The clamp arm (201) has a breaking point, and the cross-sectional area of ​​the clamp arm (201) located at the breaking point is smaller than the cross-sectional area of ​​the clamp arm (201) at other positions.

11. An explosion-proof valve according to any one of claims 1 to 7, characterized in that: The through hole (103) is located at the center of the main body (100), and a plurality of 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).

12. A battery pack, characterized in that: Comprising a battery housing (11) and an explosion-proof valve according to any one of claims 1 to 11, wherein the explosion-proof valve is arranged 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 arranged 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).

13. A battery pack according to claim 12, 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.

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

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