Battery device, electric device and manual maintenance switch

Abstract

The embodiment of the utility model provides a battery device, a power utilization device and a manual maintenance switch. The battery device comprises a battery monomer, a box body and a manual maintenance switch. The case accommodates the battery cells. The manual maintenance switch comprises a first mounting seat and a cover body, the first mounting seat is connected to the box body, the cover body is connected to the first mounting seat in a pluggable mode, and the cover body and the first mounting seat jointly define a cavity. The manual maintenance switch further comprises a one-way valve, the one-way valve is arranged on the first installation base and / or the cover body, and the one-way valve is configured to allow gas in the cavity to be discharged out of the cavity. Therefore, in the process that the cover body is inserted into the first mounting seat, gas in the cavity is discharged from the through hole through the one-way valve, so that the internal pressure and the external pressure of the cavity are balanced, the cover body can be smoothly inserted into the first mounting seat, and the one-way valve can also prevent external liquid, impurities and the like from entering the cavity.

Description

Technical Field

[0001] The present application relates to the technical field of batteries, and in particular, to a battery device, an electrical device, and a manual maintenance switch. Background Art

[0002] Energy conservation and emission reduction are the keys to the sustainable development of the automotive industry. Electric vehicles have become an important part of the sustainable development of the automotive industry due to their advantages of energy conservation and environmental protection. For electric vehicles, battery device technology is an important factor related to their development. At present, higher requirements are put forward for the reliability of battery devices. Summary of the Utility Model

[0003] The present application provides a battery device, an electrical device, and a manual maintenance switch to improve the reliability of the battery device.

[0004] The present application is implemented by the following technical solutions:

[0005] In a first aspect, an embodiment of the present application provides a battery device, including battery cells, a box body, and a manual maintenance switch. The box body houses the battery cells; the manual maintenance switch includes a first mounting base and a cover body. The first mounting base is connected to the box body, and the cover body is detachably connected to the first mounting base. The cover body and the first mounting base jointly define a cavity; wherein, the manual maintenance switch further includes a check valve, and the check valve is disposed on the first mounting base and / or the cover body, and the check valve is configured to allow the gas in the cavity to be discharged from the cavity.

[0006] Since the manual maintenance switch further includes a check valve, the check valve is disposed on the first mounting base and / or the cover body, and the check valve is configured to allow the gas in the cavity to be discharged from the cavity, so that during the process of inserting the cover body into the first mounting base, the gas in the cavity can be discharged from the cavity through the check valve to balance the pressure inside and outside the cavity. Thus, the cover body can be smoothly inserted into the first mounting base and can be inserted in place to reliably conduct the high-voltage circuit, and can also block external liquid and debris from entering the cavity in the reverse direction, thereby improving the reliability of the battery device.

[0007] In some embodiments, the first mounting base is provided with a mounting hole, and the check valve is mounted in the mounting hole.

[0008] Since the first mounting base is provided with a mounting hole and the check valve is mounted in the mounting hole, it is convenient to install the check valve and improves the convenience.

[0009] In some embodiments, the check valve is threadedly connected or snap-connected to the mounting hole.

[0010] The one-way valve is threadedly connected or snap-fitted to the mounting hole. A common one-way valve with a mounting thread or a one-way valve with a snap-fitting structure on the market can be selected for direct installation, improving the installation efficiency.

[0011] In some embodiments, a first sealing member is provided between the one-way valve and the first mounting seat, and the first sealing member is configured to seal the mounting hole.

[0012] It can improve the airtightness between the one-way valve and the first mounting seat, further reduce the risk of external liquid and debris entering the cavity in the reverse direction, and thus improve the reliability of the battery device.

[0013] In some embodiments, the box body has a storage space for storing the battery cells; the one-way valve is configured to unidirectionally communicate the cavity and the storage space.

[0014] Thus, by configuring the one-way valve to unidirectionally communicate the cavity and the storage space, the gas discharged from the cavity enters the storage space through the one-way valve, so that the one-way valve is not exposed to the outside, which can better protect the one-way valve and enable the one-way valve to stably and reliably perform its one-way exhaust function, further improving the reliability.

[0015] In some embodiments, the manual maintenance switch further includes a first connection terminal and a second connection terminal. Both the first connection terminal and the second connection terminal are provided on the first mounting seat. The first connection terminal is electrically connected to the battery cell. The cover body is provided with a conductive member, and the conductive member is configured to electrically connect the first connection terminal and the second connection terminal when the cover body is connected to the first mounting seat; the battery device further includes: a first connector, including a second mounting seat and a third connection terminal. The third connection terminal is provided on the second mounting seat, and the third connection terminal is electrically connected to the second connection terminal. The second mounting seat and the first mounting seat are integrally formed.

[0016] The integral formation of the second mounting seat and the first mounting seat can reduce the sealing interface, have a better sealing effect, and can simplify the installation process, achieve rapid installation, and reduce costs.

[0017] In some embodiments, the battery device further includes: a sampling component for collecting information of the battery cell; a second connector, including a third mounting seat and a fourth connection terminal. The fourth connection terminal is provided on the third mounting seat, and the fourth connection terminal is electrically connected to the sampling component. The third mounting seat, the second mounting seat, and the first mounting seat are integrally formed.

[0018] By integrally forming the first mounting seat of the manual maintenance switch, the second mounting seat of the first connector, and the third mounting seat of the second connector, the assembly efficiency can be improved.

[0019] In some embodiments, the box body has a storage space for storing the battery cells. The box body includes a first wall, and the first wall is provided with an opening that communicates the through hole and the storage space. The first mounting seat, the second mounting seat, and the third mounting seat are integrally formed to form a panel, and the panel is connected to the first wall and covers the opening.

[0020] Integrally forming the panel by the first mounting seat, the second mounting seat, and the third mounting seat facilitates installation, reduces the sealing interface, and improves the sealing effect.

[0021] In some embodiments, the battery device further includes: a second seal, which is disposed between the panel and the first wall and surrounds the opening.

[0022] Since the first mounting seat, the second mounting seat, and the third mounting seat are integrally formed to form the panel, the sealing interface is reduced, so the risk of external liquid and debris entering the interior of the box body can be reduced.

[0023] In a second aspect, an electrical device provided by an embodiment of the present application includes the battery device provided by any one of the embodiments in the first aspect.

[0024] In a third aspect, an embodiment of the present application further provides a manual maintenance switch, including: a first mounting seat and a cover body. The cover body is detachably connected to the first mounting seat, and the cover body and the first mounting seat jointly define a cavity. Wherein, the manual maintenance switch further includes a one-way valve, and the one-way valve is disposed on the first mounting seat and / or the cover body, and the one-way valve is configured to allow the gas in the cavity to discharge from the cavity.

[0025] In some embodiments, the first mounting seat is provided with a mounting hole, and the one-way valve is installed in the mounting hole.

[0026] In some embodiments, the one-way valve is threadedly connected or snap-connected to the mounting hole.

[0027] In some embodiments, a first seal is disposed between the one-way valve and the first mounting seat, and the first seal is configured to seal the mounting hole.

[0028] The above description is only an overview of the technical solution of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other objects, features, and advantages of the present application more obvious and understandable, the specific embodiments of the present application are specifically given below. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] To more clearly illustrate the technical solutions of the embodiments of the present application, the accompanying drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0030] Figure 1 Schematic diagram of the structure of a vehicle provided by some embodiments of the present application;

[0031] Figure 2 Exploded view of the structure of a battery device provided by some embodiments of the present application;

[0032] Figure 3 Exploded view of the structure of a battery cell provided by some embodiments of the present application;

[0033] Figure 4 Schematic diagram of the connection structure between a manual maintenance switch and a box body provided by some embodiments of the present application;

[0034] Figure 5 Schematic diagram of another perspective of the manual maintenance switch provided by some embodiments of the present application;

[0035] Figure 6 Top view of the manual maintenance switch provided by some embodiments of the present application;

[0036] Figure 7 Side view of a one-way valve provided by some embodiments of the present application;

[0037] Figure 8 For Figure 7 Cross-sectional view taken along line A-A in

[0038] Figure 9 Top view of the manual maintenance switch with the cover removed provided by some embodiments of the present application.

[0039] Icons:

[0040] 1000 - Vehicle; 100 - Battery device; 200 - Controller; 300 - Motor;

[0041] 10 - Box body; 11 - First sub-box body; 12 - Second sub-box body; 101 - Storage space; 102 - First wall;

[0042] 20 - Battery cell; 21 - Outer shell; 22 - Electrode assembly; 222 - Tab; 23 - Electrode terminal; 211 - Housing; 212 - End cap;

[0043] 30 - Manual maintenance switch; 31 - First mounting seat; 32 - Cover body; 33 - Check valve; 331 - Valve body; 331a - Air inlet; 331b - Exhaust port; 332 - Breathable membrane; 333 - First seal; 34 - Mounting hole; 30a - Cavity; 35 - First connection terminal; 36 - Second connection terminal; 37 - First connector; 371 - Second mounting seat; 38 - Second high - voltage connector; 39 - Second connector; 391 - Third mounting seat; 392 - Fourth connection terminal;

[0044] 40 - Second seal. Detailed implementation manner

[0045] The following further describes the implementation manners of the present application in detail with reference to the accompanying drawings and embodiments. The detailed descriptions and drawings of the following embodiments are used to exemplarily illustrate the principle of the present application, but cannot be used to limit the scope of the present application, that is, the present application is not limited to the described embodiments.

[0046] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by those skilled in the technical field to which the present application belongs; the terms used in the specification of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application; the terms "including" and "having" and any variations thereof in the specification of the present application are intended to cover non - exclusive inclusion.

[0047] The terms "first", "second", etc. in the specification of the present application are used to distinguish different objects, rather than to describe a specific order or primary - secondary relationship.

[0048] Referring to "embodiment" in the present application means that a specific feature, structure or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The phrase appears in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described in the present application can be combined with other embodiments.

[0049] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "mount", "connect", "attach" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0050] The term "and / or" in this application merely describes the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, in this application, the character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0051] The term "plurality" as used in this application refers to two or more (including two). Similarly, "multiple groups" refers to two or more groups (including two groups), and "multiple pieces" refers to two or more pieces (including two pieces).

[0052] The battery device mentioned in the embodiments of this application may include one or more battery cell components for providing voltage and capacity. The battery cell components may include a plurality of battery cells, and the plurality of battery cells are connected in series, parallel, or in a hybrid connection through a busbar component.

[0053] In some embodiments, the battery cell components are usually formed by arranging a plurality of battery cells. As an example, the battery cell components can be a battery module, and the battery module is formed by arranging and fixing a plurality of battery cells to form an independent module. As an example, the battery module can be formed by bundling a plurality of battery cells with cable ties.

[0054] In some embodiments, the battery device can be a battery pack, and the battery pack includes a box body and one or more battery cell components, and the battery cell components are accommodated in the box body.

[0055] As an example, the battery cell components can be a battery module, and the battery cell components can be accommodated in the box body by fixing the battery module in the box body.

[0056] As an example, the battery cell components can also be accommodated in the box body by directly fixing a plurality of battery cells to the box body.

[0057] As an example, the box body may include a first sub-box body and a second sub-box body. The first sub-box body and the second sub-box body are snapped together so that a closed space is formed inside the box body to accommodate the battery cell components. The "closed" here means covered or closed, which can be sealed or non-sealed. The first sub-box body can be a top cover or a bottom plate.

[0058] As an example, the first sub-box body and the second sub-box body can be U-shaped structures respectively, and the two are snapped together so that the two U-shaped structures form a closed space.

[0059] As an example, the box body may include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are respectively connected to the frame so that a closed space is formed inside the box body to accommodate the battery cell components.

[0060] As an example, the box body can be part of the chassis structure of a vehicle. For example, the top cover of the box body can become at least part of the floor of the vehicle, or the frame of the box body can become at least part of the cross beams and longitudinal beams of the vehicle.

[0061] In some embodiments, the battery device refers to an energy storage device, and the energy storage device includes a box body, and a door is provided on at least one side of the box body. The energy storage device includes an energy storage container, an energy storage electrical cabinet, etc.

[0062] In the embodiments of the present application, the battery cell can be a secondary battery, and a secondary battery refers to a battery cell that can be activated by charging to continue to be used after the battery cell discharges.

[0063] The battery cell can be, but is not limited to, a lithium-ion battery, a sodium-ion battery, a sodium-lithium-ion battery, a lithium metal battery, a sodium metal battery, a lithium-sulfur battery, a magnesium-ion battery, a nickel-metal hydride battery, a nickel-cadmium battery, a lead-acid battery, etc.

[0064] A manual service disconnect (MSD) is usually designed in the battery device. The manual service disconnect can include a mounting seat and a cover body (handle). The cover body is detachably connected to the mounting seat to form a sealed cavity for protecting the internal conductive structure. When the cover body is pulled out from the mounting seat, the high-voltage circuit is disconnected, and when the cover body is inserted into the mounting seat, the high-voltage circuit is conducted. Among them, during the process of inserting the cover body into the mounting seat, there is a pressure difference between the gas in the cavity and the outside gas, which is likely to cause difficulty in insertion, resulting in the situation that the cover body is not inserted in place, causing the conduction of the high-voltage circuit to be unreliable, and further resulting in poor reliability of the battery device.

[0065] To solve the problem that the cover body of the manual service disconnect is not inserted in place into the mounting seat, resulting in poor reliability of the battery device, the present application provides a battery device. By arranging a one-way valve on the first mounting seat and / or the cover body, the one-way valve is configured to allow the gas in the cavity to discharge from the cavity, so that during the process of inserting the cover body into the first mounting seat, the gas in the cavity can discharge from the cavity through the one-way valve, so that the pressure inside and outside the cavity is balanced. Thus, the cover body can be smoothly inserted into the first mounting seat and can be inserted in place, reliably conducting the high-voltage circuit, and can also block external liquids and sundries from entering the cavity in the reverse direction, thereby improving the reliability of the battery device.

[0066] The battery device disclosed in the embodiments of the present application can be used, but is not limited to, in electrical devices such as vehicles, ships or aircraft. The power supply system of the electrical device can be composed of the battery device disclosed in the present application.

[0067] The technical solutions described in the embodiments of the present application are applicable to various electrical devices using battery devices, such as mobile phones, portable devices, laptop computers, battery cars, electric toys, power tools, vehicles, ships, and spacecrafts, etc. For example, spacecrafts include airplanes, rockets, space shuttles, and spaceships, etc.

[0068] For the convenience of description, the following embodiments take a vehicle, which is an electrical device in an embodiment of the present application, as an example for illustration.

[0069] Refer to Figure 1 , Figure 1 which is a schematic structural diagram of a vehicle 1000 provided in some embodiments of the present application. The vehicle 1000 can be a fuel vehicle, a gas vehicle, or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle, or an extended-range electric vehicle, etc. A battery device 100 is disposed inside the vehicle 1000, and the battery device 100 can be disposed at the bottom, the head, or the tail of the vehicle 1000. The battery device 100 can be used for power supply of the vehicle 1000. For example, the battery device 100 can be used as an operating power source of the vehicle 1000 and is used for the circuit system of the vehicle 1000, such as the working power consumption requirements for starting, navigating, and running of the vehicle 1000.

[0070] The vehicle 1000 may further include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to supply power to the motor 300. For example, it is used for the working power consumption requirements for starting, navigating, and driving of the vehicle 1000.

[0071] In some embodiments of the present application, the battery device 100 can not only be used as an operating power source of the vehicle 1000, but also be used as a driving power source of the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0072] Refer to Figure 2 , Figure 2Exploded view of the structure of the battery device 100 provided by some embodiments of the present application. The battery device 100 includes a box body 10 and battery cells 20, and the battery cells 20 are accommodated in the box body 10. Among them, the box body 10 is used to provide an accommodation space for the battery cells 20, and the box body 10 can adopt various structures. In some embodiments, the box body 10 may include a first sub-box body 11 and a second sub-box body 12. The first sub-box body 11 and the second sub-box body 12 cover each other, and the first sub-box body 11 and the second sub-box body 12 jointly define a storage space 101 for accommodating the battery cells 20. The second sub-box body 12 may be a hollow structure with an open end, and the first sub-box body 11 may be a plate-like structure. The first sub-box body covers the open side of the second sub-box body 12 so that the first sub-box body 11 and the second sub-box body 12 jointly define an accommodation space; the first sub-box body 11 and the second sub-box body 12 may also both be hollow structures with an open side, and the open side of the first sub-box body 11 covers the open side of the second sub-box body 12.

[0073] In the battery device 100, there may be multiple battery cells 20, and the multiple battery cells 20 can be connected in series, parallel, or in a mixed connection. A mixed connection means that there are both series and parallel connections among the multiple battery cells 20. The multiple battery cells 20 can be directly connected in series, parallel, or in a mixed connection together, and then the whole formed by the multiple battery cells 20 is accommodated in the box body 10; of course, the battery device 100 can also be that multiple battery cells 20 are first connected in series, parallel, or in a mixed connection to form a battery module form, and then multiple battery modules are connected in series, parallel, or in a mixed connection to form a whole and are accommodated in the box body 10. The battery device 100 may further include other structures. For example, the battery device 100 may further include a busbar component for realizing the electrical connection between multiple battery cells.

[0074] Refer to Figure 3 , Figure 3 Exploded view of the structure of the battery cell 20 provided by some embodiments of the present application. As Figure 3 shown, the battery cell 20 includes a housing 21, an electrode assembly 22, and other functional components. The housing 21 includes a shell 211 and an end cap 212. The shell 211 has an opening, and the end cap 212 closes the opening to isolate the internal environment of the battery cell 20 from the external environment.

[0075] The housing 211 is a component used to cooperate with the end cap 212 to form the internal environment of the battery cell 20. Among them, the formed internal environment can be used to accommodate the electrode assembly 22, the electrolyte, and other components. One or more electrode assemblies 22 can be included in the housing 211. The housing 211 and the end cap 212 can be independent components. The housing 211 can be of various shapes and sizes. Specifically, the shape of the housing 211 can be determined according to the specific shape and size of the electrode assembly. The material of the housing 211 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0076] The end cap 212 refers to a component that covers the opening of the housing 211 to isolate the internal environment of the battery cell 20 from the external environment. Without limitation, the shape of the end cap 212 can be adapted to the shape of the housing 211 to cooperate with the housing 211. Optionally, the end cap 212 can be made of a material with a certain hardness and strength (such as aluminum alloy). In this way, the end cap 212 is not easily deformed when subjected to extrusion and collision, enabling the battery cell 20 to have higher structural strength and improved reliability. Functional components such as the electrode terminal 23 can be provided on the end cap 212. The electrode terminal 23 can be used to electrically connect to the tab 222 of the electrode assembly 22 for outputting or inputting the electrical energy of the battery cell. The material of the end cap 212 can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiments of the present application do not make special restrictions on this. In some embodiments, an insulating structure can be further provided on the inner side of the end cap 212. The insulating structure can be used to isolate the electrical connection components inside the housing from the end cap to reduce the risk of short circuit. Exemplarily, the insulating structure can be plastic, rubber, etc.

[0077] The following refers to Figures 4 to 9 , and a detailed description will be given to the battery device 100 of the embodiments of the present application.

[0078] The embodiments of the present application provide a battery device, including: a battery cell 20; a box body 10 for accommodating the battery cell 20; a manual service disconnect 30, including a first mounting seat 31 and a cover body 32. The first mounting seat 31 is connected to the box body 10, and the cover body 32 is detachably connected to the first mounting seat 31. The cover body 32 and the first mounting seat 31 jointly define a cavity 30a. Among them, the manual service disconnect 30 further includes a one-way valve 33. The one-way valve 33 is provided on the first mounting seat 31 and / or the cover body 32, and the one-way valve 33 is configured to allow the gas in the cavity 30a to be discharged from the cavity 30a.

[0079] The manual service disconnect 30 (Manual Service Disconnect, MSD) is used to cut off or conduct the high-voltage circuit in the battery device 100.

[0080] The first mounting base 31 can be detachably connected to the box body 10. For example, detachable connection can be achieved through bolts, screws, buckles, etc. The first mounting base 31 can also be fixedly connected to the box body 10 by gluing. The first mounting base 31 can be connected to any wall of the box body 10. For example, it is connected to the first wall 102 of the box body 10, and the first wall 102 can be a side wall of the box body 10. The first wall 102 can be provided with an opening, and the first mounting base 31 is connected to the first wall 102 and covers the opening. When the cover body 32 is connected to the first mounting base 31, it can be located outside the box body 10.

[0081] When the cover body 32 is inserted into the first mounting base 31, the high-voltage circuit is turned on; when the cover body 32 is pulled out from the first mounting base 31, the high-voltage circuit is turned off. When the cover body 32 is inserted into the first mounting base 31, the cavity 30a jointly defined by the cover body 32 and the first mounting base 31 can be airtight to prevent liquid, debris, etc. from entering the cavity 30a.

[0082] As an example, a seal is provided between the cover body 32 and the first mounting base 31 to form an airtight cavity 30a. Of course, the cover body 32 and the first mounting base 31 can also form an airtight cavity 30a through the interference fit of their own structures.

[0083] During the process of inserting the cover body 32 into the first mounting base 31, the gas in the cavity 30a defined by the cover body 32 and the first mounting base 31 is compressed, making the air pressure inside the cavity 30a unbalanced with the air pressure outside the cavity 30a, resulting in difficulty in inserting the cover body 32.

[0084] The manual maintenance switch 30 further includes a check valve 33, which is arranged on the first mounting base 31 and / or the cover body 32, and the check valve 33 is configured to allow the gas in the cavity 30a to be discharged from the cavity 30a.

[0085] The check valve 33 can be arranged only on the first mounting base 31 or only on the cover body 32. The check valve 33 can also be arranged on both the first mounting base 31 and the cover body 32.

[0086] During the process of inserting the cover body 32 into the first mounting base 31, due to the existence of the check valve 33, the gas inside the cavity 30a can pass through the check valve 33, so as to be discharged outside the cavity 30a, making the air pressure inside the cavity 30a balanced with the air pressure outside the cavity 30a. Thus, the cover body 32 can be smoothly inserted into the first mounting base 31 and can be installed in place, and at the same time, it can also prevent external liquid, impurities, etc. from entering the cavity 30a in the reverse direction.

[0087] The manual maintenance switch 30 further includes a one-way valve 33. The one-way valve 33 is disposed on the first mounting base 31 and / or the cover 32. The one-way valve 33 is configured to allow the gas in the cavity 30a to discharge from the cavity 30a, so that during the process of inserting the cover 32 into the first mounting base 31, the gas in the cavity 30a can discharge from the cavity 30a through the one-way valve 33, so as to balance the pressure inside and outside the cavity 30a. Thus, the cover 32 can be smoothly inserted into the first mounting base 31 and can be inserted in place, reliably conducting the high-voltage circuit. Moreover, it can also prevent external liquid and sundries from entering the cavity 30a in the reverse direction, thereby improving the reliability of the battery device 100.

[0088] As an example, referring to Figures 6 - 8 , the one-way valve 33 may include a valve body 331 and a one-way breathable membrane 332. The valve body 331 includes an air inlet 331a and an air outlet 331b. The one-way breathable membrane 332 is located between the air inlet 331a and the air outlet 331b. The one-way breathable membrane 332 may be a polytetrafluoroethylene membrane and has a microporous structure. During the process of inserting the cover 32 into the first mounting base 31, when the gas pressure in the cavity 30a is greater than the external gas pressure, the one-way breathable membrane 332 expands, and the micropores on it open, allowing the gas in the cavity 30a to discharge. When the external gas pressure of the cavity 30a is greater than the internal gas pressure of the cavity 30a, the one-way breathable membrane 332 can closely adhere to the valve body 331 to close the micropores, preventing external liquid, particles and other impurities from entering.

[0089] The structure of the above one-way valve 33 is only exemplary. The one-way valve 33 may also be a spring-type one-way valve, a ball-type check valve, etc.

[0090] In some embodiments, the first mounting base 31 is provided with a mounting hole 34, and the one-way valve 33 is installed in the mounting hole 34.

[0091] As an example, the mounting hole 34 may communicate with the cavity 30a, and the one-way valve 33 is installed in the mounting hole 34. The air inlet 331a of the one-way valve 33 may be located inside the cavity 30a, and the air outlet 331b may be located outside the cavity 30a.

[0092] By providing the mounting hole 34 on the first mounting base 31 and installing the one-way valve 33 in the mounting hole 34, it is convenient to install the one-way valve 33 and improves the convenience.

[0093] In some embodiments, the one-way valve 33 is threadedly connected or snap-fitted to the mounting hole 34.

[0094] The one-way valve 33 is threadedly connected or snap-fitted to the mounting hole 34, and a commercially available one-way valve 33 with a mounting thread or a one-way valve 33 with a snap-fit structure can be directly selected for installation, improving the installation efficiency.

[0095] In some embodiments, a first seal 333 is provided between the one-way valve 33 and the first mounting seat 31, and the first seal 333 is configured to seal the mounting hole 34.

[0096] The first seal 333 can be a rubber ring or an adhesive, etc. As an example, the first seal 333 is sleeved on the valve body 331, and when the one-way valve 33 is installed on the mounting hole 34, the first seal 333 seals the mounting hole 34.

[0097] Thereby, the airtightness between the one-way valve 33 and the first mounting seat 31 can be improved, and the risk of external liquid and debris entering the cavity 30a in the reverse direction can be further reduced, thereby improving the reliability of the battery device 100.

[0098] In some embodiments, the box body 10 has a storage space 101 for storing the battery cells 20; the one-way valve 33 is configured to communicate the cavity 30a and the storage space 101 unidirectionally.

[0099] The air inlet 331a of the one-way valve 33 can communicate with the cavity 30a, and the air outlet 331b of the one-way valve 33 can communicate with the storage space 101.

[0100] During the process of inserting the cover body 32 into the first mounting seat 31, the gas discharged from the cavity 30a enters the storage space 101 through the one-way valve 33.

[0101] Thereby, by configuring the one-way valve 33 to communicate the cavity 30a and the storage space 101 unidirectionally, the gas discharged from the cavity 30a enters the storage space 101 through the one-way valve 33, so that the one-way valve 33 is not exposed to the outside, the one-way valve 33 can be better protected, and the one-way valve 33 can stably and reliably perform its one-way exhaust function, further improving the reliability.

[0102] In some embodiments, the manual maintenance switch 30 further includes a first connection terminal 35 and a second connection terminal 36. Both the first connection terminal 35 and the second connection terminal 36 are provided on the first mounting seat 31. The first connection terminal 35 is electrically connected to the battery cell 20. The cover body 32 is provided with a conductive member (not shown in the figure), and the conductive member is configured to electrically connect the first connection terminal 35 and the second connection terminal 36 when the cover body 32 is connected to the first mounting seat 31; the battery device 100 further includes: a first connector 37, including a second mounting seat 371 and a third connection terminal (not labeled in the figure), the third connection terminal is provided on the second mounting seat 371, the third connection terminal is electrically connected to the second connection terminal 36, and the second mounting seat 371 is integrally formed with the first mounting seat 31.

[0103] The first connection terminal 35 and the second connection terminal 36 can be in the form of pin structures. Of course, other conductive structures are also possible.

[0104] The first connection terminal 35 is electrically connected to the battery cell 20, and it can be that the first connection terminal 35 is electrically connected to the total output positive electrode of multiple battery cells 20.

[0105] The first connector 37 can be a first high-voltage connector, and the first high-voltage connector connects the second connection terminal 36 and the positive electrode of a high-voltage box (not shown in the figure).

[0106] The battery device 100 can also include a second high-voltage connector 38, and the second high-voltage connector 38 connects the total output negative electrode of multiple battery cells 20 and the negative electrode of the high-voltage box.

[0107] When the cover body 32 is inserted into the first mounting seat 31, the conductive member on the cover body 32 electrically connects the first connection terminal 35 and the second connection terminal 36, so that the battery cell 20, the manual maintenance switch 30, the high-voltage box, the first high-voltage connector, and the second high-voltage connector form a conducting high-voltage loop.

[0108] The second mounting seat 371 is integrally formed with the first mounting seat 31, and it can be integrally formed by injection molding or compression molding.

[0109] The second mounting seat 371 is integrally formed with the first mounting seat 31, which can reduce the sealing interface, simplify the installation process, achieve rapid installation, and reduce costs.

[0110] In some embodiments, the battery device 100 further includes a sampling component (not shown in the figure) for collecting information of the battery cell 20; a second connector 39, including a third mounting seat 391 and a fourth connection terminal 392, the fourth connection terminal 392 is disposed on the third mounting seat 391, the fourth connection terminal 392 is electrically connected to the sampling component, and the third mounting seat 391, the second mounting seat 371, and the first mounting seat 31 are integrally formed.

[0111] The second connector 39 is a low-voltage connector for connecting the sampling component and a battery management system (BMS). The sampling component is a battery cell monitoring unit (Cell Supervision Circuit, CSC) in the battery device, which is used to collect state information of the battery cell 20, etc., and send it to the battery management system (BMS).

[0112] By integrally forming the first mounting seat 31 of the manual maintenance switch 30, the second mounting seat 371 of the first connector 37, and the third mounting seat 391 of the second connector 39, the assembly efficiency can be improved.

[0113] In some embodiments, the box body 10 has a storage space 101 for storing battery cells 20. The box body 10 includes a first wall 102. The first wall 102 is provided with an opening, and the opening communicates with the storage space 101. The first mounting seat 31, the second mounting seat 371, and the third mounting seat 391 are integrally formed to form a panel, and the panel is connected to the first wall 102 and covers the opening.

[0114] The panel is integrally formed by the first mounting seat 31, the second mounting seat 371, and the third mounting seat 391, which is convenient for installation, can reduce the sealing interface, and improve the sealing effect.

[0115] In some embodiments, the battery device 100 further includes: a second seal 40 ( Figure 6 as shown), disposed between the panel and the first wall 102 and surrounding the opening.

[0116] Since the panel is integrally formed by the first mounting seat 31, the second mounting seat 371, and the third mounting seat 391, the sealing interface is reduced, so the risk of external liquid and debris entering the interior of the box body 10 can be reduced.

[0117] The embodiment of the present application further provides an electric device, including the battery device 100 in any one of the above embodiments.

[0118] The embodiment of the present application further provides a manual maintenance switch 30, including a first mounting seat 31 and a cover body 32. The cover body 32 is detachably connected to the first mounting seat 31, and the cover body 32 and the first mounting seat 31 jointly define a cavity 30a. Wherein, the manual maintenance switch 30 further includes a one-way valve 33, and the one-way valve 33 is disposed on the first mounting seat 31 and / or the cover body 32, and the one-way valve 33 is configured to allow the gas in the cavity 30a to discharge from the cavity 30a.

[0119] In one embodiment, the first mounting seat 31 is provided with a mounting hole 34, and the one-way valve 33 is installed in the mounting hole 34.

[0120] In one embodiment, the one-way valve 33 is threadedly connected or snap-connected to the mounting hole 34.

[0121] In one embodiment, a first seal 333 is disposed between the one-way valve 33 and the first mounting seat 31, and the first seal 333 is configured to seal the mounting hole 34.

[0122] The specific structure of the manual maintenance switch 30 has been introduced in detail above and will not be repeated here.

[0123] Next, with reference to Figures 4 - 9 , a specific example of the present application will be described in detail.

[0124] An embodiment of the present application provides a battery device 100, which includes a box body 10, battery cells 20, a manual maintenance switch 30, a first connector 37, and a second connector 39.

[0125] The box body 10 has a storage space for housing the battery cells 20. The box body 10 includes a first wall 102, and the first wall 102 is a side wall of the box body 10. An opening is formed in the first wall 102.

[0126] The manual maintenance switch 30 includes a first mounting base 31 and a cover body 32. The cover body 32 is detachably connected to the first mounting base 31. The cover body 32 and the first mounting base 31 jointly define a cavity 30a. The cover body 32 is inserted into the first mounting base 31 to conduct the high-voltage circuit of the battery device 100, and the cover body 32 is pulled out of the first mounting base 31 to disconnect the high-voltage circuit.

[0127] The first connector 37 is a first high-voltage connector and includes a second mounting base 371. The second connector 39 is a low-voltage connector and includes a third mounting base 391.

[0128] The first mounting base 31, the second mounting base 371, and the third mounting base 391 are integrally formed to form a panel. The panel is connected to the first wall 102 and covers the opening. A second sealing member 40 is provided between the panel and the first wall 102, and the second sealing member 40 is disposed around the opening.

[0129] The first mounting base 31 is provided with a mounting hole 34. The mounting hole 34 communicates the cavity 30a and the storage space 101. The manual maintenance switch 30 further includes a one-way valve 33. The one-way valve 33 is installed in the mounting hole 34. An air inlet 331a of the one-way valve 33 communicates with the cavity 30a, and an air outlet 331b of the one-way valve 33 communicates with the storage space 101.

[0130] When the cover body 32 is inserted into the first mounting base 31, the gas in the cavity 30a is unidirectionally discharged into the storage space 101 through the one-way valve 33.

[0131] Although the present application has been described with reference to the preferred embodiments, various improvements can be made to it and components therein can be replaced with equivalents without departing from the scope of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the present application.

Claims

1. A battery device, characterized in that, Comprising: Battery cell; Box body for housing the battery cell; Manual maintenance switch, including a first mounting seat and a cover body, the first mounting seat is connected to the box body, the cover body is detachably connected to the first mounting seat, and the cover body and the first mounting seat jointly define a cavity; Wherein, the manual maintenance switch further includes a one-way valve, the one-way valve is arranged on the first mounting seat and / or the cover body, and the one-way valve is configured to allow the gas in the cavity to discharge from the cavity.

2. The battery device according to claim 1, characterized in that, The first mounting seat is provided with a mounting hole, and the one-way valve is mounted in the mounting hole.

3. The battery device according to claim 2, characterized in that, The one-way valve is threadedly connected or snap-connected to the mounting hole.

4. The battery device according to claim 2, wherein A first sealing member is arranged between the one-way valve and the first mounting seat, and the first sealing member is configured to seal the mounting hole.

5. The battery device according to any one of claims 1-4, characterized in that, The box body has a receiving space for housing the battery cell; The one-way valve is configured to communicate the cavity and the receiving space unidirectionally.

6. The battery device according to any one of claims 1 to 4, characterized in that, The manual maintenance switch further includes a first connection terminal and a second connection terminal, both the first connection terminal and the second connection terminal are arranged on the first mounting seat, the first connection terminal is electrically connected to the battery cell, and the cover body is provided with a conductive member, and the conductive member is configured to electrically connect the first connection terminal and the second connection terminal when the cover body is connected to the first mounting seat; The battery device further includes: A first connector, including a second mounting seat and a third connection terminal, the third connection terminal is arranged on the second mounting seat, the third connection terminal is electrically connected to the second connection terminal, and the second mounting seat and the first mounting seat are integrally formed.

7. The battery device according to claim 6, characterized in that, The battery device further includes: Sampling component for collecting information of the battery cell; A second connector, including a third mounting seat and a fourth connection terminal, the fourth connection terminal is arranged on the third mounting seat, the fourth connection terminal is electrically connected to the sampling component, and the third mounting seat, the second mounting seat and the first mounting seat are integrally formed.

8. The battery device according to claim 7, characterized in that, The box body has a receiving space for housing the battery cell, the box body includes a first wall, and the first wall is provided with an opening which is communicated with the receiving space; The first mounting seat, the second mounting seat and the third mounting seat are integrally formed to form a panel, and the panel is connected to the first wall and covers the opening.

9. The battery device according to claim 8, wherein, The battery device further includes: A second sealing member is arranged between the panel and the first wall and surrounds the opening.

10. An electrical device, characterized in that, Comprising: The battery device according to any one of claims 1-9.

11. A manual maintenance switch, characterized in that, Comprising: First mounting seat; Cover body, detachably connected to the first mounting seat, and the cover body and the first mounting seat jointly define a cavity; Wherein, the manual maintenance switch further includes a one-way valve, the one-way valve is arranged on the first mounting seat and / or the cover body, and the one-way valve is configured to allow the gas in the cavity to discharge from the cavity.

12. The manual maintenance switch according to claim 11, characterized in that, The first mounting seat is provided with a mounting hole, and the one-way valve is mounted in the mounting hole.

13. The manual maintenance switch according to claim 12, wherein The one-way valve is threadedly connected or snap-connected to the mounting hole.

14. The manual maintenance switch according to claim 12, characterized in that, A first seal is provided between the one-way valve and the first mounting seat, and the first seal is configured to seal the mounting hole.

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