Battery pack and electric equipment

Abstract

The utility model discloses a battery pack and electric equipment, the battery pack comprises a box body, a detection piece and an explosion-proof valve assembly, the detection piece comprises a conductive joint installed on the box body; the explosion-proof valve assembly is suitable for being connected with the box body in a sealed mode or separated from the box body, the explosion-proof valve assembly is provided with a conductive part, and the conductive part is used for being electrically connected with the conductive connector in a separable mode to form a detection circuit. Therefore, the state of the anti-explosion valve assembly can be monitored according to the conduction condition of the conductive connector and the conductive part, the safety of the battery pack is improved, the detection piece can be repeatedly used, the maintenance cost is reduced, and the practicability of the battery pack is improved.

Description

Technical Field

[0001] This utility model relates to the field of batteries, and in particular to a battery pack and an electrical device. Background Technology

[0002] The explosion-proof valve is the connection channel between the battery pack and the external environment. Under normal operating conditions, it remains closed. Opening often occurs under unexpected harsh conditions or in a state of thermal runaway within the battery pack, posing a significant threat to the pack's sealing and thermal safety. Currently, there is a lack of monitoring for explosion-proof valve rupture. If a ruptured valve is not detected in time, direct contact between the battery interior and air can lead to the formation of lithium oxide, and moisture in the air can cause the battery core to overheat and catch fire, posing a safety hazard. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a battery pack in which a detection element can monitor the status of the explosion-proof valve assembly based on the continuity of the first and second conductive connectors, thereby improving the safety of the battery pack. Furthermore, the detection element can be reused, resulting in low maintenance costs.

[0004] A battery pack according to an embodiment of the present invention includes: a housing; a detection element, the detection element including a conductive connector mounted on the housing; and an explosion-proof valve assembly mounted on the housing, the explosion-proof valve assembly being adapted to be sealed to or detached from the housing, the explosion-proof valve assembly having a conductive portion for detachably being electrically connected to the conductive connector to form a detection circuit.

[0005] According to the battery pack of this utility model embodiment, the status of the explosion-proof valve assembly can be monitored based on the conductivity of the conductive connector and conductive part, which helps to improve the safety of the battery pack. Furthermore, the detection component can be reused, which helps to reduce maintenance costs and improves the practicality of the battery pack.

[0006] According to some embodiments of the present invention, the battery pack includes a first conductive connector and a second conductive connector spaced apart, and the conductive portion is used to detachably connect the first conductive connector and the second conductive connector.

[0007] According to some embodiments of the present invention, the conductive part of the battery pack is a first conductive element disposed within the explosion-proof valve assembly. The first conductive element has an exposed mating end, which includes a first mating end and a second mating end. The first mating end is detachably electrically connected to the first conductive connector, and the second mating end is detachably electrically connected to the second conductive connector.

[0008] According to some embodiments of the present invention, in a battery pack, one of the housing and the explosion-proof valve assembly is provided with a plug-in hole, and one of the mating end and the conductive connector is accommodated in the plug-in hole and the other is inserted into the plug-in hole.

[0009] According to some embodiments of the present invention, the battery pack has a protruding plug-in seat on the side of the housing facing the explosion-proof valve assembly, and the plug-in seat has the plug-in hole formed therein.

[0010] According to some embodiments of the present invention, the explosion-proof valve assembly has a clearance cavity for avoiding the plug socket.

[0011] According to some embodiments of the present invention, the detection element of the battery pack further includes an elastic element connected to the conductive connector. When the explosion-proof valve assembly is located in the housing and the conductive part is electrically connected to the conductive connector, the elastic element is in a compressed state.

[0012] According to some embodiments of the present invention, in the battery pack, a portion of the elastic element and the conductive connector are embedded in the housing.

[0013] According to some embodiments of the present invention, the elastic element of the battery pack is constructed as a disc spring.

[0014] According to some embodiments of the present invention, the explosion-proof valve assembly includes a valve body and a mounting portion disposed on the valve body. The mounting portion is engaged with or disengaged from the housing so that the explosion-proof valve assembly can be detached as a whole. The conductive portion is disposed on the valve body and / or the mounting portion.

[0015] According to some embodiments of the present invention, the mounting part and the housing are engaged in a snap-fit ​​configuration.

[0016] According to some embodiments of the present invention, the battery pack has a through hole on the first side wall of the housing, and the mounting part is a buckle, which passes through the through hole and abuts against the first side wall.

[0017] According to some embodiments of the present invention, in the battery pack, the valve body is provided to define at least a portion of the exhaust channel, and the housing is provided with an exhaust through hole, which communicates with the exhaust channel.

[0018] According to some embodiments of the present invention, the battery pack has an exhaust channel arranged around the conductive portion.

[0019] According to some embodiments of the present invention, in the battery pack, the valve body is provided with a plurality of vent holes around the conductive part, and the vent holes form part of the vent channel.

[0020] According to some embodiments of the present invention, in the battery pack, the valve body is provided with a plurality of reinforcing ribs on the side of the valve body facing the housing, and the plurality of reinforcing ribs correspond one-to-one with at least a portion of the exhaust holes and are located on the side of the exhaust holes away from the conductive part.

[0021] According to some embodiments of the present invention, the battery pack has multiple mounting portions arranged around the exhaust channel, and the through hole defines the exhaust through hole.

[0022] According to some embodiments of the present invention, the battery pack has a first through hole in the first sidewall, and a plurality of partition ribs are provided in the first through hole, with the through hole defined between adjacent partition ribs.

[0023] According to some embodiments of the present invention, the explosion-proof valve assembly further includes a protective cover and a waterproof and breathable membrane. The protective cover is installed on the side of the valve body away from the housing and defines the exhaust channel with the valve body. The waterproof and breathable membrane is disposed between the protective cover and the valve body and is at least partially located within the exhaust channel.

[0024] The battery pack according to some embodiments of the present invention further includes a battery management system, which is electrically connected to the detection element, and is adapted to determine the state of the explosion-proof valve assembly based on the continuity of the detection circuit.

[0025] This utility model also proposes an electrical device.

[0026] The electrical equipment according to the present invention includes: a battery pack according to any of the above embodiments.

[0027] According to the embodiments of this utility model, the battery pack of the electrical equipment has high safety and low maintenance cost, which helps to improve the competitiveness of the electrical equipment.

[0028] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0029] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0030] Figure 1 This is a schematic diagram of a battery pack according to an embodiment of the present utility model;

[0031] Figure 2 This is an exploded view of a battery pack according to an embodiment of the present utility model;

[0032] Figure 3 This is an installation sectional view of the explosion-proof valve assembly according to an embodiment of the present utility model;

[0033] Figure 4 This is a schematic diagram of the installation of the explosion-proof valve assembly and the first sidewall according to an embodiment of the present utility model;

[0034] Figure 5 This is a schematic diagram of the valve body according to an embodiment of the present utility model.

[0035] Figure label:

[0036] Battery pack 100,

[0037] Box body 1, first side wall 11, plug-in socket 12, plug-in hole 121, through hole 13, partition rib 14.

[0038] Conductive connector 20, first conductive connector 21, second conductive connector 22, elastic element 23.

[0039] Explosion-proof valve assembly 3, valve body 31, vent 311, reinforcing rib 312, clearance cavity 313, snap fastener 32, protective cover 33, waterproof and breathable membrane 34, sealing ring 35.

[0040] First conductive element 36, first mating end 361, second mating end 362, insulating sleeve 4. Detailed Implementation

[0041] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0042] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0043] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0044] Hereinafter, with reference to the accompanying drawings, a battery pack 100 according to an embodiment of the present invention will be described.

[0045] like Figures 1-5 As shown, the battery pack 100 according to an embodiment of the present utility model includes: a housing 1, a detection element and an explosion-proof valve assembly 3. The detection element includes a conductive connector 20 installed on the housing 1. The explosion-proof valve assembly 3 is installed on the housing 1 and is adapted to be sealed to or detached from the housing 1. The explosion-proof valve assembly 3 is provided with a conductive part, which is used to be detachably electrically connected to the conductive connector 20 to form a detection circuit.

[0046] This allows the detection device to monitor the status of the explosion-proof valve assembly 3, which helps improve the safety of the battery pack 100. Furthermore, the detection device can be reused, which helps reduce maintenance costs.

[0047] First, such as Figures 1-3 As shown, the battery pack 100 includes a housing 1, a detection component, an explosion-proof valve assembly 3, and a battery management system. Battery cells are installed inside the housing 1. The detection component is electrically connected to the battery management system, and the detection component is equipped with a conductive connector 20, which is mounted on the housing 1.

[0048] The explosion-proof valve assembly 3 is installed on the enclosure 1. The explosion-proof valve assembly 3 is adapted to be sealed to or detached from the enclosure 1. Here, detachment means that the explosion-proof valve assembly 3 is displaced away from the enclosure 1, rather than that the explosion-proof valve assembly 3 is completely separated from the enclosure 1.

[0049] The explosion-proof valve assembly 3 is provided with a conductive part, which is used to be detachably electrically connected to the conductive connector 20 to form a detection circuit. The battery management system is adapted to determine the state of the explosion-proof valve assembly 3 based on the conduction status of the detection circuit. It should be noted that the conductive connector 20 can be provided as one and the conductive part can be grounded (e.g., the conductive part can be electrically connected to the battery tray) so that the conductive connector 20 can form a detection circuit when electrically connected to the conductive part; or, the conductive connector 20 can be provided as two, and the conductive part can electrically connect the two conductive connectors 20 to form a detection circuit.

[0050] Specifically, when the explosion-proof valve assembly 3 is sealed and connected to the housing 1, the conductive part can conduct with the conductive connector 20, and the detection circuit is in a conducting state. At this time, the detection element can continuously feed back electrical signals to the battery management system, and the battery management system can determine that the explosion-proof valve assembly 3 is in a normal state. However, when thermal runaway occurs inside the housing 1, the air pressure and temperature inside the housing 1 rise rapidly. Under the action of air pressure, the explosion-proof valve assembly 3 is completely separated from the housing 1. At this time, the conductive part separates from the conductive connector 20, the detection circuit is open-circuited, the electrical signal disappears, and the battery management system can determine that the explosion-proof valve assembly 3 is in a working state. When the explosion-proof valve assembly 3 is unstable due to severe impact from external objects, excessive aging, extreme working conditions, etc., the explosion-proof valve assembly 3 may partially detach from the housing 1. At this time, the contact between the conductive part and the conductive connector 20 decreases, the peak value of the electrical signal changes, and the battery management system can determine that the explosion-proof valve assembly 3 is in a failed state. The battery management system can prompt the driver and passengers to replace or repair the explosion-proof valve in time and warn the driver and passengers to avoid water activities.

[0051] The above settings allow for monitoring of the status of the explosion-proof valve assembly 3, which helps improve the safety of the battery pack 100. Furthermore, the detection components can be reused, which helps reduce maintenance costs.

[0052] According to the battery pack 100 of this utility model embodiment, the detection component can monitor the status of the explosion-proof valve assembly 3 based on the conductivity of the conductive connector 20 and the conductive part, which helps to improve the safety of the battery pack 100. Moreover, the detection component can be reused, which helps to reduce maintenance costs and improves the practicality of the battery pack 100.

[0053] In some embodiments of this invention, the housing 1 and the detection element can be insulated from each other. Specifically, the housing 1 and the conductive connector 20 are insulated and fixed to ensure the reliability of the detection circuit. In other embodiments, the housing 1 can also be electrically connected to the detection element / conductive connector 20 to increase the detection area of ​​the detection circuit, improve detection efficiency, and reduce the difficulty of electrically connecting the internal battery management system to the detection element.

[0054] In some embodiments of this utility model, the housing 1 and the detection component can be integrally formed to reduce the manufacturing difficulty of the battery pack 100 and reduce costs.

[0055] In some embodiments of the present invention, the conductive connector 20 includes a first conductive connector 21 and a second conductive connector 22 spaced apart, and the conductive part is used to detachably connect the first conductive connector 21 and the second conductive connector 22.

[0056] Specifically, when the explosion-proof valve assembly 3 is installed in place, the conductive part can connect the first conductive connector 21 and the second conductive connector 22, and the detection circuit is in a conductive state. At this time, the detection element can continuously feed back electrical signals to the battery management system, and the battery management system can determine that the explosion-proof valve assembly 3 is in a normal state. However, when thermal runaway occurs inside the housing 1, the air pressure and temperature inside the housing 1 rise rapidly. Under the action of air pressure, the explosion-proof valve assembly 3 detaches from the housing 1. At this time, the conductive part separates from the first conductive connector 21 and the second conductive connector 22, and the detection circuit is in an open circuit. When the electrical signal disappears, the battery management system can determine that the explosion-proof valve assembly 3 is in working condition. When the explosion-proof valve assembly 3 is unstable due to severe impact from external objects, excessive aging, extreme working conditions, etc., the explosion-proof valve assembly 3 may partially detach from the housing 1. At this time, the contact between the conductive part and the first conductive connector 21 and / or the second conductive connector 22 decreases, and the peak value of the electrical signal changes. The battery management system can determine that the explosion-proof valve assembly 3 is in a failed state. The battery management system can prompt the driver and passengers to replace or repair the explosion-proof valve in time and warn the driver and passengers to avoid water activities.

[0057] The above settings can prevent other components (such as the battery tray) from becoming charged, which helps to reduce the probability of leakage and improves the safety of the battery pack 100.

[0058] In some embodiments of this utility model, such as Figure 3 As shown, the conductive part can be constructed as a first conductive element 36 disposed in the explosion-proof valve assembly 3. The first conductive element 36 has an exposed mating end, which includes a first mating end 361 and a second mating end 362. The first mating end 361 is detachably electrically connected to the first conductive connector 21, and the second mating end 362 is detachably electrically connected to the second conductive connector 22.

[0059] With the above settings, the rest of the explosion-proof valve assembly 3 can be de-energized, which helps to prevent leakage of the explosion-proof valve assembly 3 and improves the reliability of the battery pack 100.

[0060] In some embodiments of this utility model, one of the housing 1 and the explosion-proof valve assembly 3 is provided with a plug-in hole 121, and one of the mating end and the conductive connector 20 is accommodated in the plug-in hole 121 and the other is inserted into the plug-in hole 121.

[0061] For example, such as Figures 2-3As shown, the housing 1 can be provided with a plug-in hole 121, in which the first conductive connector 21 and the second conductive connector 22 are accommodated. The first mating end 361 and the second mating end 362 extend into the plug-in hole 121, with the first mating end 361 electrically connected to the first conductive connector 21 and the second mating end 362 electrically connected to the second conductive connector 22. Alternatively, the explosion-proof valve assembly 3 can be provided with a plug-in hole 121, in which the first mating end 361 and the second mating end 362 are accommodated. The first conductive connector 21 and the second conductive connector 22 extend into the plug-in hole 121, with the first mating end 361 electrically connected to the first conductive connector 21 and the second mating end 362 electrically connected to the second conductive connector 22.

[0062] By implementing the above settings, external interference can be reduced, the stability of the fit between the detection component and the conductive part can be improved, and the detection accuracy of the detection component can be enhanced.

[0063] In some embodiments of this utility model, such as Figures 2-3 As shown, a plug-in seat 12 can be provided on the side of the housing 1 facing the explosion-proof valve assembly 3. The plug-in seat 12 protrudes towards the explosion-proof valve assembly 3, and a plug-in hole 121 is formed in the plug-in seat 12. The first conductive connector 21 and the second conductive connector 22 are accommodated in the plug-in hole 121.

[0064] With the above configuration, the insertion hole 121 can have a sufficient size to better accommodate the first conductive connector 21 and the second conductive connector 22, thereby improving the reliability of the battery pack 100.

[0065] In some embodiments of this utility model, such as Figure 3 As shown, the battery pack 100 also includes an insulating sleeve 4, which is adapted to be fitted onto the outside of the first conductive connector 21 and the second conductive connector 22 and to be fitted into the inner wall of the insertion hole 121. This reduces the difficulty of installing the first conductive connector 21 and the second conductive connector 22.

[0066] In some embodiments of this utility model, such as Figure 3 As shown, an avoidance cavity 313 is formed within the explosion-proof valve assembly 3. The avoidance cavity 313 is disposed opposite to the plug-in seat 12 and is used to avoid the plug-in seat 12. Through the above arrangement, the plug-in seat 12 can be prevented from affecting the installation of the explosion-proof valve assembly 3, which helps to improve the installation stability of the explosion-proof valve assembly 3, thereby improving the overall performance of the battery pack 100.

[0067] In some embodiments of this utility model, such as Figure 3As shown, the testing component also includes an elastic element 23, which is connected to the conductive connector 20. When the explosion-proof valve assembly 3 is located in the housing 1 and its conductive part is electrically connected to the conductive connector 20, the elastic element 23 is in a compressed state. It should be noted that the elastic element 23 can be fixedly connected to the conductive connector 20 by welding, copper wire winding, groove limiting, or other methods.

[0068] Specifically, the elastic element 23 can be disposed on the side of the conductive connector 20 close to the conductive part. When the explosion-proof valve assembly 3 is located in the housing 1 and the conductive part is electrically connected to the conductive connector 20, the elastic element 23 can abut against the conductive part. Alternatively, the elastic element 23 can be disposed on the side of the conductive connector 20 away from the conductive part. When the explosion-proof valve assembly 3 is located in the housing 1 and the conductive part is electrically connected to the conductive connector 20, the elastic element 23 can drive the conductive connector 20 to abut against the conductive part. This utility model does not limit this.

[0069] With the above settings, when the explosion-proof valve assembly 3 undergoes a slight displacement relative to the housing 1, the second conductive element 2 can still conduct with the conductive part, which helps to reduce the probability of false detection and improves the reliability of the battery pack 100.

[0070] In some embodiments of this utility model, such as Figure 3 As shown, a portion of the elastic element 23 and the conductive connector 20 can be pre-embedded in the housing 1. This arrangement provides insulation and sealing for the elastic element 23 and the conductive connector 20, reducing the probability of leakage. It also limits the deformation direction of the elastic element 23, improving the conductivity stability between the conductive part and the conductive connector 20.

[0071] In some embodiments of this invention, the elastic element 23 can be constructed as a disc spring. This increases the contact area between the conductive part and the first conductive connector 21 and the second conductive connector 22, which helps to reduce resistance and energy loss. In other embodiments, the elastic element 23 can also be a component with elastic compression properties, such as a spring.

[0072] In some embodiments of this utility model, such as Figures 3-5 As shown, the explosion-proof valve assembly 3 includes a valve body 31 and a mounting portion disposed on the valve body 31. The mounting portion can be engaged with or disengaged from the housing 1 to allow the explosion-proof valve assembly 3 to be detached. A conductive portion is disposed on the valve body 31 and / or the mounting portion. Exemplarily, the conductive portion can be disposed on the valve body 31; or, the conductive portion can be disposed on the mounting portion; or, the conductive portion can be disposed on both the valve body 31 and the mounting portion. This utility model does not impose any limitations on this. It should be noted that the separation of the mounting portion from the housing 1 does not mean that the mounting portion is completely detached from the housing 1, but rather that the mounting portion is removed from its original mounting position.

[0073] Specifically, the explosion-proof valve assembly 3 can be fixed to the housing 1 by matet between the mounting part and the housing 1. When thermal runaway occurs inside the housing 1, the air pressure inside the housing 1 increases and the air pressure can act on the explosion-proof valve assembly 3 to separate the mounting part from the housing 1, the explosion-proof valve assembly 3 detaches from the housing 1, and the detection element is disconnected.

[0074] With the above settings, when the battery pack 100 experiences thermal runaway, the conductive parts are less affected, which can ensure the detection accuracy of the detection components and improve the reliability of the battery pack 100.

[0075] In some embodiments of this utility model, such as Figures 3-4 As shown, the mounting part and the housing 1 can be fitted together with a snap-fit ​​mechanism. This makes the explosion-proof valve assembly 3 easy to assemble and disassemble, thus reducing the assembly difficulty of the battery pack 100.

[0076] In some embodiments of this utility model, reference is made to Figures 4-5 As shown, the first side wall 11 of the enclosure 1 has a through hole 13, and the mounting part is a buckle 32, which passes through the through hole 13 and abuts against the first side wall 11. Specifically, when thermal runaway occurs inside the enclosure 1, the air pressure inside the enclosure 1 increases, and the air pressure can act on the explosion-proof valve assembly 3. The buckle 32 will deform and separate from the enclosure 1, so that the explosion-proof valve assembly 3 can detach from the enclosure 1.

[0077] With the above settings, the battery pack 100 can be maintained by replacing the explosion-proof valve assembly 3, which helps to reduce the maintenance difficulty of the battery pack 100 and improves the practicality of the battery pack 100.

[0078] In some embodiments of this utility model, such as Figure 2 As shown, the valve body 31 defines at least a portion of the exhaust passage. An exhaust port is provided on the first side wall 11 of the housing 1, and the exhaust port communicates with the exhaust passage. When thermal runaway occurs inside the housing 1, high-temperature, high-pressure gas flows through the exhaust port and the exhaust passage to escape into the external space. This allows the high-temperature, high-pressure gas to be discharged from the housing 1 in a timely manner, thus improving the safety of the battery pack 100.

[0079] In some embodiments of this utility model, an exhaust channel may be provided surrounding the conductive part. It is understood that by providing an exhaust channel surrounding the conductive part, the impact of high-temperature and high-pressure gas on the explosion-proof valve assembly 3 can be made more uniform, so that the conductive part can move more smoothly relative to the housing 1, which helps to ensure the detection accuracy of the detection component and improves the reliability of the battery pack 100.

[0080] In some embodiments of this utility model, such as Figure 5As shown, the valve body 31 has a plurality of vent holes 311 surrounding the conductive part, and the vent holes 311 form part of the venting channel. Exemplarily, the plurality of vent holes 311 can be evenly spaced apart; or, the plurality of vent holes 311 can be symmetrically arranged about the conductive part, and the present invention does not limit this. With the above arrangement, space can be fully utilized to make the structure of the explosion-proof valve assembly 3 more compact.

[0081] In some embodiments of this utility model, such as Figure 5 As shown, the valve body 31 has multiple reinforcing ribs 312 on the side facing the housing 1, and each reinforcing rib 312 corresponds to at least a portion of the exhaust holes. This improves the structural stability of the valve body 31, and the reinforcing ribs 312 can guide the airflow from the exhaust holes, thereby improving the exhaust efficiency of the explosion-proof valve assembly 3.

[0082] In some embodiments of this utility model, such as Figures 2-4 As shown, multiple mounting parts can be provided, with multiple mounting parts arranged around the exhaust channel, and multiple through holes 13 provided. The multiple through holes 13 correspond to and cooperate with the multiple mounting parts one by one, and a portion of the through hole 13 defines the exhaust through hole.

[0083] It is understandable that by setting multiple mounting parts, the connection stability between the explosion-proof valve assembly 3 and the housing 1 can be improved, and by setting a portion of the through hole 13 to define the exhaust port, the structure of the housing 1 can be simplified, and the design rationality of the battery pack 100 can be improved.

[0084] In some embodiments of this utility model, such as Figure 2 and Figure 4 As shown, the first sidewall 11 is provided with a first through hole, and a plurality of partition ribs 14 are provided in the first through hole. The partition ribs 14 are spaced apart circumferentially along the first through hole, and extend radially along the first through hole with their inner ends connected to the plug-in seat 12. A through hole 13 is defined between adjacent partition ribs 14. This can improve the structural stability of the first sidewall 11 and help improve the overall reliability of the battery pack 100.

[0085] In some embodiments of this utility model, such as Figures 1-3As shown, the explosion-proof valve assembly 3 also includes a protective cover 33 and a waterproof and breathable membrane 34. The protective cover 33 covers the side of the valve body 31 facing away from the housing 1 and defines an exhaust passage with the valve body 31. The waterproof and breathable membrane 34 is located between the valve body 31 and the protective cover 33 and is connected to the valve body 31. At least a portion of the waterproof and breathable membrane 34 is located within the exhaust passage. The explosion-proof valve assembly 3 can exchange gas with the external space through the waterproof and breathable membrane 34 to balance the pressure difference, and the waterproof and breathable membrane 34 can block the intrusion of external water flow, preventing short circuits and leakage inside the battery pack 100. It should be noted that the waterproof and breathable membrane 34 can be a polytetrafluoroethylene membrane, polypropylene membrane, or polyethylene membrane with micropores, etc. This helps to improve the reliability of the explosion-proof valve assembly 3.

[0086] In some embodiments of this utility model, such as Figures 2-3 As shown, the explosion-proof valve assembly 3 also includes a sealing ring 35. The material of the sealing ring 35 can be any elastic material such as silicone, fluororubber, or polyurethane. The sealing ring 35 is sandwiched between the housing 1 and the valve body 31. The sealing ring 35 is used to seal the gap between the explosion-proof valve assembly 3 and the housing 1 to prevent liquid from entering the battery pack 100 through the gap and causing a short circuit or leakage. This improves the reliability of the battery pack 100.

[0087] This utility model also proposes an electrical device.

[0088] The electrical device according to an embodiment of the present invention includes a battery pack 100 according to any of the above embodiments. It should be noted that the electrical device can be any one of the following: an energy storage box, a new energy vehicle, or a hybrid vehicle.

[0089] According to the embodiments of the present invention, the battery pack 100 of the electrical equipment has high safety and low maintenance cost, which helps to improve the competitiveness of the electrical equipment.

[0090] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0091] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery pack (100), characterized in that, include: Box (1); The detection component includes a conductive connector (20) installed in the housing (1); An explosion-proof valve assembly (3) is mounted on the housing (1). The explosion-proof valve assembly (3) is adapted to be sealed to or detached from the housing (1). The explosion-proof valve assembly (3) is provided with a conductive part, which is used to be detachably electrically connected to the conductive connector (20) to form a detection circuit.

2. The battery pack (100) according to claim 1, characterized in that, The conductive connector (20) includes a first conductive connector (21) and a second conductive connector (22) spaced apart, and the conductive part is used to detachably connect the first conductive connector (21) and the second conductive connector (22).

3. The battery pack (100) according to claim 2, characterized in that, The conductive part is a first conductive element (36) disposed in the explosion-proof valve assembly (3). The first conductive element (36) has an exposed mating end, which includes a first mating end (361) and a second mating end (362). The first mating end (361) is detachably electrically connected to the first conductive connector (21), and the second mating end (362) is detachably electrically connected to the second conductive connector (22).

4. The battery pack (100) according to claim 3, characterized in that, One of the housing (1) and the explosion-proof valve assembly (3) is provided with a plug hole (121), and one of the mating end and the conductive connector (20) is accommodated in the plug hole (121) and the other is inserted into the plug hole (121).

5. The battery pack (100) according to claim 4, characterized in that, The housing (1) has a protruding plug-in seat (12) on the side facing the explosion-proof valve assembly (3), and the plug-in seat (12) has the plug-in hole (121) formed inside.

6. The battery pack (100) according to claim 5, characterized in that, The explosion-proof valve assembly (3) is provided with a clearance cavity (313) to avoid the plug-in seat (12).

7. The battery pack (100) according to claim 1, characterized in that, The detection component also includes an elastic element (23), which is connected to the conductive connector (20). When the explosion-proof valve assembly (3) is located in the housing (1) and the conductive part is electrically connected to the conductive connector (20), the elastic element (23) is in a compressed state.

8. The battery pack (100) according to claim 7, characterized in that, A portion of the elastic element (23) and the conductive connector (20) are embedded in the housing (1).

9. The battery pack (100) according to claim 7, characterized in that, The elastic element (23) is constructed as a disc spring.

10. The battery pack (100) according to any one of claims 1-9, characterized in that, The explosion-proof valve assembly (3) includes a valve body (31) and a mounting part disposed on the valve body (31). The mounting part is engaged with or disengaged from the housing (1) so that the explosion-proof valve assembly (3) can be detached. The conductive part is provided on the valve body (31) and / or the mounting part.

11. The battery pack (100) according to claim 10, characterized in that, The mounting part and the housing (1) are engaged by a snap-fit.

12. The battery pack (100) according to claim 11, characterized in that, The first side wall (11) of the housing (1) is provided with a through hole (13), and the mounting part is a buckle (32). The buckle (32) passes through the through hole (13) and abuts against the first side wall (11).

13. The battery pack (100) according to claim 12, characterized in that, The valve body (31) defines at least a portion of the exhaust passage, and the housing (1) is provided with an exhaust through hole that communicates with the exhaust passage.

14. The battery pack (100) according to claim 13, characterized in that, The exhaust channel is arranged around the conductive part.

15. The battery pack (100) according to claim 14, characterized in that, The valve body (31) is provided with a plurality of vent holes (311) around the conductive part, and the vent holes (311) form part of the vent passage.

16. The battery pack (100) according to claim 13, characterized in that, The valve body (31) has a plurality of reinforcing ribs (312) on the side of the valve body (31) facing the housing (1), and the plurality of reinforcing ribs (312) correspond one-to-one with at least a portion of the exhaust holes.

17. The battery pack (100) according to claim 13, characterized in that, The mounting portion is multiple and arranged around the exhaust channel, and the through hole (13) defines the exhaust through hole.

18. The battery pack (100) according to claim 17, characterized in that, The first sidewall (11) is provided with a first through hole, and a plurality of partition ribs (14) are provided in the first through hole, and the through hole (13) is defined between adjacent partition ribs (14).

19. The battery pack (100) according to claim 13, characterized in that, The explosion-proof valve assembly (3) further includes a protective cover (33) and a waterproof and breathable membrane (34). The protective cover (33) is installed on the side of the valve body (31) away from the housing (1) and defines the exhaust passage with the valve body (31). The waterproof and breathable membrane (34) is disposed between the protective cover (33) and the valve body (31) and is at least partially located in the exhaust passage.

20. The battery pack (100) according to claim 1, characterized in that, It also includes a battery management system, which is electrically connected to the detection device, and the battery management system is adapted to determine the state of the explosion-proof valve assembly (3) based on the conduction status of the detection circuit.

21. An electrical appliance, characterized in that, include: The battery pack (100) according to any one of claims 1-20.

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