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 embedded into the first mounting seat in a pluggable mode, and the cover body and the first mounting seat jointly define a cavity. Wherein the cover body is provided with a through hole, and the through hole is communicated with the cavity and the external space of the cover body, so that in the process that the cover body is inserted into the first mounting seat, gas in the cavity can be discharged from the through hole, the internal pressure and the external pressure of the cavity are balanced, and the cover body can be smoothly inserted into the first mounting seat.

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] 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 seat and a cover body. The first mounting seat is connected to the box body, and the cover body is insertably and removably embedded in the first mounting seat. The cover body and the first mounting seat jointly define a cavity. Wherein, the cover body is provided with a through hole, and the through hole communicates the cavity with the external space of the cover body.

[0005] By providing a through hole in the cover body, the through hole communicates the cavity with the external space of the cover body, so that during the process of inserting the cover body into the first mounting seat, the gas in the cavity can be discharged from the through hole in time, so as to balance the pressure inside and outside the cavity. 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, thereby improving the reliability of the battery device.

[0006] In some embodiments, the manual maintenance switch further includes a plugging member for opening or closing the through hole.

[0007] By opening the through hole with the plugging member, during the process of inserting the cover body into the first mounting seat, the gas in the cavity can be discharged from the through hole in time, so that the cover body can be smoothly inserted into the first mounting seat and reliably conduct the high-voltage circuit; by closing the through hole with the plugging member to block external liquids, impurities, etc. from entering the cavity through the through hole, it forms a protection for the manual maintenance switch, thereby improving the reliability of the battery device.

[0008] In some embodiments, the plugging member is detachably inserted into the through hole.

[0009] By detachably inserting the plugging member into the through hole, not only can the cover body be smoothly inserted into the first mounting seat, but also it can more effectively block external liquids, impurities, etc. from entering the cavity through the through hole.

[0010] In some embodiments, a first seal is provided between the plugging member and the cover body, and the first seal is configured to seal the cover body and the plugging member.

[0011] By providing a first seal between the plugging member and the cover body, and the first seal being configured to seal the cover body and the plugging member, it is possible to better prevent external liquids, impurities, etc. from entering the cavity through the through-hole. When the plugging member is inserted into the through-hole, in the example where the first seal is located in the through-hole, the first seal can also prevent the plugging member from detaching from the cover body.

[0012] In some embodiments, the battery device further includes a battery management system; the manual maintenance switch further includes a first interlock terminal, a second interlock terminal, and a first conductive member. The first interlock terminal and the second interlock terminal are disposed on the first mounting seat and are both electrically connected to the battery management system. The first conductive member is disposed on the plugging member; the first conductive member is configured to: electrically connect the first interlock terminal and the second interlock terminal when the plugging member closes the through-hole; and disconnect the first interlock terminal and the second interlock terminal when the plugging member opens the through-hole.

[0013] By disposing the first conductive member on the plugging member, the plugging member not only has the function of plugging the through-hole to prevent liquids and debris from entering the cavity, but also has the function of connecting and disconnecting the interlock circuit.

[0014] In some embodiments, the plugging member is detachably inserted into the through-hole; the first conductive member includes a first conductive portion and a second conductive portion, and the first conductive portion and the second conductive portion are respectively used for plugging and mating with the first interlock terminal and the second interlock terminal to electrically connect the first interlock terminal and the second interlock terminal.

[0015] The first conductive portion and the second conductive portion are respectively used for plugging and mating with the first interlock terminal and the second interlock terminal, which can reduce the risk of the plugging member coming out of the through-hole, thereby improving the connection reliability.

[0016] In some embodiments, the manual maintenance switch further includes a first connection terminal and a second connection terminal. The first connection terminal and the second connection terminal are both disposed on the first mounting seat. The first connection terminal is electrically connected to the battery cell. The cover body is provided with a second conductive member, and the second 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 disposed on the second mounting seat, and the third connection terminal is electrically connected to the second connection terminal. The second mounting seat is integrally formed with the first mounting seat.

[0017] The second mounting seat and the first mounting seat are integrally formed, which can simplify the installation process, achieve rapid installation, and reduce costs.

[0018] 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 being disposed on the third mounting seat and electrically connected to the sampling component, and the third mounting seat, the second mounting seat, and the first mounting seat being integrally formed.

[0019] 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 accelerated.

[0020] 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.

[0021] By integrally forming the first mounting seat, the second mounting seat, and the third mounting seat to form a panel, it is convenient for installation and can reduce the sealing interface and improve the sealing effect.

[0022] In some embodiments, the battery device further includes: a second sealing member disposed between the panel and the first wall and surrounding the opening.

[0023] Since the first mounting seat, the second mounting seat, and the third mounting seat are integrally formed to form a panel, the sealing interface is reduced, and the sealing between the panel and the first wall can be achieved by one sealing member, thereby reducing costs.

[0024] In a second aspect, an embodiment of the present application provides an electrical device including the battery device according to any one of the embodiments in the first aspect.

[0025] In a third aspect, an embodiment of the present application provides a manual maintenance switch including: a first mounting seat and a cover body, the cover body being insertably and removably embedded in the first mounting seat, and the cover body and the first mounting seat jointly defining a cavity; wherein, the cover body is provided with a through hole that communicates the cavity and the external space of the cover body.

[0026] In some embodiments, the manual maintenance switch further includes a plugging member that is removably inserted into the through hole.

[0027] In some embodiments, the manual maintenance switch further includes a first interlock terminal, a second interlock terminal, and a first conductive member. The first interlock terminal and the second interlock terminal are disposed on the first mounting base and are used for electrically connecting to the battery management system. The first conductive member is disposed on the plugging member. The first conductive member is configured to electrically connect the first interlock terminal and the second interlock terminal when the plugging member is inserted into the through 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 in accordance with the content of the specification. And in order to make the above and other purposes, features, and advantages of the present application more obvious and understandable, the following specifically illustrates the specific embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore 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 Structural schematic diagram of a vehicle provided by some embodiments of the present application;

[0031] Figure 2 Exploded structural schematic diagram of a battery device provided by some embodiments of the present application;

[0032] Figure 3 Exploded structural schematic diagram of a battery cell provided by some embodiments of the present application;

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

[0034] Figure 5 Top view of a manual maintenance switch provided by some embodiments of the present application;

[0035] Figure 6 Exploded structural schematic diagram of a manual maintenance switch provided by some embodiments of the present application;

[0036] Figure 7 For Figure 5 Sectional view A-A in

[0037] Figure 8 Top view of a manual maintenance switch without a cover provided by some embodiments of the present application.

[0038] ICON:

[0039] 1000 - Vehicle; 100 - Battery device; 200 - Controller; 300 - Motor;

[0040] 10 - Box body; 11 - First sub - box body; 12 - Second sub - box body; 101 - Storage space; 102 - First wall;

[0041] 20 - Battery cell; 21 - Outer shell; 22 - Electrode assembly; 222 - Tab; 23 - Electrode terminal; 211 - Housing; 212 - End cap;

[0042] 30 - Manual maintenance switch; 30a - Cavity; 31 - First mounting seat; 311 - First interlock terminal, 312 - Second interlock terminal; 32 - Cover body; 33 - Through - hole; 34 - Plugging member; 341 - First seal; 342 - First conductive member; 342a - First conductive part; 342b - Second conductive part; 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. Detailed implementation manners

[0043] The following further describes the implementation manners of the present application in detail with reference to the drawings and embodiments. The detailed descriptions and drawings of the following embodiments are used to exemplarily illustrate the principles 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.

[0044] 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 description of the present application in the specification 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.

[0045] The terms "first", "second", etc. in the specification of the present application are used to distinguish different objects and are not used to describe a specific order or primary - secondary relationship.

[0046] Referring to "embodiments" in the present application means that specific features, structures or characteristics described in combination with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase at 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.

[0047] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "joined", and "attached" 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 it can be the communication inside two components. 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 circumstances.

[0048] The term "and / or" in the present application is merely an association relationship describing associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in the present application generally represents an "or" relationship between the front and rear associated objects.

[0049] The term "a plurality of" appearing in the present application refers to two or more (including two). Similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of sheets" refers to two or more sheets (including two sheets).

[0050] The battery device mentioned in the embodiments of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly 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.

[0051] In some embodiments, the battery cell assembly is usually formed by arranging a plurality of battery cells; as an example, the battery cell assembly 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.

[0052] 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 assemblies, and the battery cell assemblies are accommodated in the box body.

[0053] As an example, the battery cell assembly can be a battery module, and the battery cell assembly can be accommodated in the box body by fixing the battery module in the box body.

[0054] As an example, the battery cell assembly can also be accommodated in the box body by directly fixing a plurality of battery cells to the box body.

[0055] 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 assembly. The term "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.

[0056] As an example, the first sub - box body and the second sub - box body can be U - shaped structures respectively, and the two are buckled with each other so that the two U - shaped structures form a closed space.

[0057] As an example, the box body can 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 assembly.

[0058] 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 - beam and longitudinal beam of the vehicle.

[0059] In some embodiments, the battery device refers to an energy storage device, and the energy storage device includes a box body with a door provided on at least one side thereof. The energy storage device includes an energy storage container, an energy storage cabinet, etc.

[0060] In the embodiments of the present application, the battery cell can be a secondary battery, and the secondary battery refers to a battery cell that can be activated by charging after discharging so as to continue to be used.

[0061] 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.

[0062] A manual service disconnect (MSD) is usually designed in the battery device. The manual service disconnect can include a mounting base and a cover body (handle). The cover body is pluggably inserted into the mounting base to form a sealed cavity for protecting the internal conductive structure. When the cover body is pulled out from the mounting base, the high - voltage circuit is disconnected, and when the cover body is inserted into the mounting base, the high - voltage circuit is conducted. Among them, during the process of inserting the cover body into the mounting base, 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, making the conduction of the high - voltage circuit unreliable, and further resulting in poor reliability of the battery device.

[0063] To solve the problem that the cover body of the manual service disconnect is not inserted in place into the mounting base, resulting in poor reliability of the battery device, the present application provides a battery device. By providing a through - hole on the cover body, the through - hole communicates the cavity and the external space of the cover body, so that during the process of inserting the cover body into the first mounting base, the gas in the cavity can be discharged in time from the through - hole 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, reliably conducting the high - voltage circuit, thereby improving the reliability of the battery device.

[0064] The battery device disclosed in the embodiments of the present application can be used in, but is not limited to, power-consuming devices such as vehicles, ships, or aircraft. The power supply system of the power-consuming device can be composed of the battery device disclosed in the present application.

[0065] The technical solutions described in the embodiments of the present application are applicable to various power-consuming devices using battery devices, such as mobile phones, portable devices, laptop computers, battery cars, electric toys, electric tools, vehicles, ships, and spacecrafts. For example, spacecrafts include airplanes, rockets, space shuttles, and spaceships, etc.

[0066] For the convenience of description, the following embodiments take a vehicle as an example of a power-consuming device in an embodiment of the present application for illustration.

[0067] Refer to Figure 1 , Figure 1 FIG. 13 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 vehicle, or an extended-range vehicle, etc. A battery device 100 is disposed inside the vehicle 1000. 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 supplying power to the vehicle 1000. For example, the battery device 100 can be used as the operating power source of the vehicle 1000 and be 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.

[0068] 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, such as for the working power consumption requirements for starting, navigating, and driving of the vehicle 1000.

[0069] In some embodiments of the present application, the battery device 100 can not only be used as the operating power source of the vehicle 1000, but also be used as the driving power source of the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0070] 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 a 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 one end open, 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 one side open, and the open side of the first sub-box body 11 covers the open side of the second sub-box body 12.

[0071] In the battery device 100, there may be multiple battery cells 20, and the multiple battery cells 20 can be connected in series, in 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, in 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, in parallel, or in a mixed connection to form a battery module form, and then multiple battery modules are connected in series, in 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 electrical connection between multiple battery cells.

[0072] 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.

[0073] The housing 211 is a component for cooperating with the end cap 212 to form the internal environment of the battery cell 20, wherein the formed internal environment can be used to accommodate the electrode assembly 22, the electrolyte, and other components. The housing 211 can contain one or more electrode assemblies 22. 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.

[0074] The end cap 212 is 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 being squeezed or collided, 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 for electrically connecting with the tab 222 of the electrode assembly 22 to output or input 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 limitations on this. In some embodiments, an insulating structure can also be provided on the inner side of the end cap 212, and 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.

[0075] The following refers to Figures 4 to 8 , and a detailed description of the battery device 100 according to the embodiments of the present application will be given.

[0076] Figure 4 Schematic diagram of the connection structure between the manual maintenance switch and the box body provided by some embodiments of the present application. Figure 5 Top view of the manual maintenance switch provided by some embodiments of the present application. Figure 6 Exploded view of the structure of the manual maintenance switch provided by some embodiments of the present application. Figure 7 For Figure 5 the sectional view taken along line A-A in Figure 8 Top view of the manual maintenance switch with the cover removed provided by some embodiments of the present application.

[0077] An embodiment of the present application provides a battery device 100, including: a battery cell 20, a box body 10, and a manual maintenance switch 30. The box body 10 houses the battery cell 20. The manual maintenance switch 30 includes a first mounting base 31 and a cover body 32. The first mounting base 31 is connected to the box body 10, and the cover body 32 is insertably and removably embedded in the first mounting base 31. The cover body 32 and the first mounting base 31 jointly define a cavity 30a. Wherein, the cover body 32 is provided with a through hole 33, and the through hole 33 communicates the cavity 30a with the external space of the cover body 32.

[0078] The manual maintenance switch 30 (Manual Service Disconnect, MSD) is used to cut off or conduct the high-voltage circuit in the battery device 100.

[0079] The first mounting base 31 can be connected to the box body 10 in a detachable manner. 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.

[0080] The cover body 32 is insertably and removably embedded in the first mounting base 31. When the cover body 32 is inserted into the first mounting base 31, a part of the cover body 32 can be embedded in the first mounting base 31, or the entire cover body 32 can be embedded in the first mounting base 31. Figure 5 The situation where the cover body 32 is partially embedded in the first mounting base 31 when the cover body 32 is inserted into the first mounting base 31 is shown. When the cover body 32 is pulled out from the first mounting base 31, the cover body 32 can be completely separated from the first mounting base 31. When the cover body 32 is inserted into the first mounting base 31, the high-voltage circuit is conducted; when the cover body 32 is pulled out from the first mounting base 31, the high-voltage circuit is disconnected. When the cover body 32 is inserted into the first mounting base 31, the cavity 30a that can be jointly defined by the cover body 32 and the first mounting base 31 is usually airtight to prevent liquid and debris from entering the cavity 30a.

[0081] 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 an interference fit of their own structures.

[0082] 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.

[0083] The cover body 32 is provided with a through hole 33, and the through hole 33 communicates the cavity 30a and the external space of the cover body 32. During the process of inserting the cover body 32 into the first mounting seat 31, the gas inside the cavity 30a can be discharged from the cavity 30a through the through hole 33, so that the air pressure inside the cavity 30a is balanced with the air pressure outside the cavity 30a, and thus the cover body 32 can be smoothly inserted into the first mounting seat 31 and can be installed in place.

[0084] Since the cover body 32 is provided with a through hole 33 which communicates the cavity 30a and the external space of the cover body 32, during the process of inserting the cover body 32 into the first mounting seat 31, the gas inside the cavity 30a can be timely discharged from the through hole 33, so as to balance the pressure inside and outside the cavity 30a. Thus, the cover body 32 can be smoothly inserted into the first mounting seat 31 and can be inserted in place, reliably conducting the high-voltage circuit, thereby improving the reliability of the battery device 100.

[0085] In some embodiments, the manual maintenance switch 30 further includes a plugging member 34, and the plugging member 34 is used to open or close the through hole 33.

[0086] When the plugging member 34 opens the through hole 33, the through hole 33 communicates the cavity 30a and the external space of the cover body 32. During the process of inserting the cover body 32 into the first mounting seat 31, the gas inside the cavity 30a can be timely discharged from the through hole 33, so that the cover body 32 can be smoothly inserted into the first mounting seat 31.

[0087] When the plugging member 34 closes the through hole 33, it blocks external liquids, impurities, etc. from entering the cavity 30a through the through hole 33, playing a role in protecting the manual maintenance switch 30.

[0088] By the plugging member 34 opening the through hole 33, during the process of inserting the cover body 32 into the first mounting seat 31, the gas inside the cavity 30a can be timely discharged from the through hole 33, so that the cover body 32 can be smoothly inserted into the first mounting seat 31 and reliably conduct the high-voltage circuit; by the plugging member 34 closing the through hole 33 to block external liquids, impurities, etc. from entering the cavity 30a through the through hole 33, it forms a protection for the manual maintenance switch 30, thereby improving the reliability of the battery device 100.

[0089] There are various ways for the plugging member 34 to open or close the through hole 33. For example, the through hole 33 can be opened or closed in a detachable manner, or can be opened or closed in a rotating manner, or can be opened or closed in a pushing or pulling manner, etc.

[0090] In some embodiments, the plugging member 34 is detachably inserted into the through hole 33.

[0091] The plugging member 34 is detachably inserted into the through hole 33 to plug the through hole 33. When the cover 32 needs to be inserted into the first mounting seat 31, the plugging member 34 is detached from the through hole 33, so that the through hole 33 communicates the cavity 30a and the external space of the cover 32. When the cover 32 needs to be inserted into the first mounting seat 31 in place, the plugging member 34 is inserted into the through hole 33.

[0092] By detachably inserting the plugging member 34 into the through hole 33, not only can the cover 32 be smoothly inserted into the first mounting seat 31, but also the external liquid, impurities, etc. can be more effectively blocked from entering the cavity 30a through the through hole 33.

[0093] The plugging member 34 is detachably inserted into the through hole 33, and the detachable connection between the plugging member 34 and the through hole 33 can be realized by means of threaded connection, snap connection, interference fit, etc.

[0094] In some embodiments, a first sealing member 341 is provided between the plugging member 34 and the cover 32, and the first sealing member 341 is configured to seal the cover 32 and the plugging member 34.

[0095] As an example, referring to Figure 7 , the first sealing member 341 may be a rubber ring sleeved on the outer periphery of the plugging member 34. When the plugging member 34 is inserted into the through hole 33, the first sealing member 341 is located in the through hole 33 to seal the gap between the cover 32 and the plugging member 34.

[0096] By providing the first sealing member 341 between the plugging member 34 and the cover 32, and the first sealing member 341 is configured to seal the cover 32 and the plugging member 34, the external liquid, impurities, etc. can be better blocked from entering the cavity 30a through the through hole 33. In the example where the first sealing member 341 is located in the through hole 33 when the plugging member 34 is inserted into the through hole 33, the first sealing member 341 can also prevent the plugging member 34 from detaching from the cover 32.

[0097] In some embodiments, the battery device 100 further includes a battery management system (MBS); the manual maintenance switch 30 further includes a first interlock terminal 311, a second interlock terminal 312 and a first conductive member 342. The first interlock terminal 311 and the second interlock terminal 312 are provided on the first mounting seat 31 and are both electrically connected to the battery management system. The first conductive member 342 is provided on the plugging member 34; the first conductive member 342 is configured to: electrically connect the first interlock terminal 311 and the second interlock terminal 312 when the plugging member 34 closes the through hole 33; disconnect the first interlock terminal 311 and the second interlock terminal 312 when the plugging member 34 opens the through hole 33.

[0098] As an example, when the plugging member 34 is inserted into the through hole 33, the first conductive member 342 electrically connects the first interlocking terminal 311 and the second interlocking terminal 312, so that the first interlocking terminal 311, the second interlocking terminal 312, the first conductive member 342 and the battery management system (MBS) form an interlocking loop, and this interlocking loop is used to detect the state of the high-voltage loop. When the plugging member 34 is removed from the through hole 33, the first conductive member 342 disconnects the first interlocking terminal 311 and the second interlocking terminal 312, and thus the above-mentioned interlocking loop is disconnected. After the interlocking loop is disconnected and the battery management system (MBS) receives this disconnection signal, it can control the high-voltage switch of the battery device 100 to close, realizing power-off before maintenance.

[0099] Before the cover body 32 is inserted into the first mounting seat 31, since the plugging member 34 is in a state of opening the through hole 33 (for example, a state of being removed from the through hole 33), at this time, the interlocking loop is disconnected and the high-voltage switch of the battery device 100 is closed, which can ensure the safety when the cover body 32 is inserted into the first mounting seat 31; before the cover body 32 is pulled out from the first mounting seat 31, the plugging member 34 can be first put into a state of opening the through hole 33 (for example, a state of being removed from the through hole 33), and at this time, the high-voltage switch of the battery device 100 is closed, which can ensure the safety when the cover body 32 is pulled out from the first mounting seat 31.

[0100] Thus, by arranging the first conductive member 342 on the plugging member 34, the plugging member 34 not only has the function of plugging the through hole 33 to prevent liquid and sundries from entering the cavity 30a, but also has the function of connecting and disconnecting the interlocking loop.

[0101] In some embodiments, the plugging member 34 is detachably inserted into the through hole 33; the first conductive member 342 includes a first conductive portion 342a and a second conductive portion 342b, and the first conductive portion 342a and the second conductive portion 342b are respectively used for plugging and mating with the first interlocking terminal 311 and the second interlocking terminal 312 to electrically connect the first interlocking terminal 311 and the second interlocking terminal 312.

[0102] When the plugging member 34 is inserted into the through hole 33, the first conductive portion 342a and the second conductive portion 342b are respectively in plugging and over-mating with the first interlocking terminal 311 and the second interlocking terminal 312 to electrically connect the first interlocking terminal 311 and the second interlocking terminal 312. When the plugging member 34 is removed from the through hole 33, the first conductive portion 342a and the second conductive portion 342b respectively disconnect the first interlocking terminal 311 and the second interlocking terminal 312.

[0103] The first conductive portion 342a and the second conductive portion 342b are respectively used for plugging and mating with the first interlocking terminal 311 and the second interlocking terminal 312, which can reduce the risk of the plugging member 34 coming out of the through hole 33, thereby improving the connection reliability.

[0104] 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 disposed on the first mounting base 31. The first connection terminal 35 is electrically connected to the battery cell 20. The cover 32 is provided with a second conductive member (not shown in the figure), and the second conductive member is configured to electrically connect the first connection terminal 35 and the second connection terminal 36 when the cover 32 is connected to the first mounting base 31. The battery device 100 further includes: a first connector 37, including a second mounting base 371 and a third connection terminal (not labeled in the figure). The third connection terminal is disposed on the second mounting base 371, and the third connection terminal is electrically connected to the second connection terminal 36. The second mounting base 371 and the first mounting base 31 are integrally formed.

[0105] The first connection terminal 35 and the second connection terminal 36 may be in the form of pin structures. Of course, other conductive structures are also possible.

[0106] The first connection terminal 35 is electrically connected to the battery cell 20, and it may be that the first connection terminal 35 is electrically connected to the total output positive electrode of multiple battery cells 20.

[0107] The first connector 37 may 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).

[0108] The battery device 100 may further 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.

[0109] When the cover 32 is inserted into the first mounting base 31, the second conductive member on the cover 32 electrically connects the first connection terminal 35 and the second connection terminal 36. Thus, 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 conductive high-voltage loop.

[0110] The second mounting base 371 and the first mounting base 31 are integrally formed, and it may be integrally formed by injection molding or compression molding.

[0111] The second mounting base 371 and the first mounting base 31 being integrally formed can simplify the installation process, achieve rapid installation, and reduce costs.

[0112] 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 base 391 and a fourth connection terminal 392. The fourth connection terminal 392 is disposed on the third mounting base 391, and the fourth connection terminal 392 is electrically connected to the sampling component. The third mounting base 391, the second mounting base 371, and the first mounting base 31 are integrally formed.

[0113] The second connector 39 is a low-voltage connector for connecting the sampling component and the battery management system (BMS). The sampling component is the cell supervision unit (CSC) in the battery device, which is used to collect the status information of the battery cells 20, etc., and send it to the battery management system (BMS).

[0114] By integrally forming the first mounting base 31 of the manual maintenance switch 30, the second mounting base 371 of the first connector 37, and the third mounting base 391 of the second connector 39, the assembly efficiency can be improved.

[0115] In some embodiments, the housing 10 has a receiving space 101 for receiving the battery cells 20. The housing 10 includes a first wall 102, and the first wall 102 is provided with an opening that communicates the through-hole 33 and the receiving space 101. The first mounting base 31, the second mounting base 371, and the third mounting base 391 are integrally formed to form a panel, and the panel is connected to the first wall 102 and covers the opening.

[0116] By integrally forming the first mounting base 31, the second mounting base 371, and the third mounting base 391 to form a panel, it is convenient for installation, and the sealing interface can be reduced, improving the sealing effect.

[0117] In some embodiments, the battery device 100 further includes: a sealing member disposed between the panel and the first wall 102 and surrounding the opening.

[0118] Since the first mounting base 31, the second mounting base 371, and the third mounting base 391 are integrally formed to form a panel, the sealing interface is reduced, and the sealing between the panel and the first wall 102 can be achieved by one sealing member, thereby reducing costs.

[0119] The embodiment of the present application further provides an electrical device, including the battery device 100 of any one of the above embodiments.

[0120] The embodiment of the present application further provides a manual maintenance switch 30, including a first mounting base 31 and a cover body 32. The cover body 32 is pluggably embedded in the first mounting base 31, and the cover body 32 and the first mounting base 31 jointly define a cavity 30a. Among them, the cover body 32 is provided with a through-hole 33, and the through-hole 33 communicates the cavity 30a and the external space of the cover body 32.

[0121] In one embodiment, the manual maintenance switch 30 further includes a plugging member 34 detachably inserted into the through-hole 33.

[0122] In one embodiment, the manual maintenance switch 30 further includes a first interlock terminal 311, a second interlock terminal 312, and a first conductive member 342. The first interlock terminal 311 and the second interlock terminal 312 are disposed on the first mounting base 31 for electrical connection to the battery management system. The first conductive member 342 is disposed on the plugging member 34. The first conductive member 342 is configured to electrically connect the first interlock terminal 311 and the second interlock terminal 312 when the plugging member 34 is inserted into the through hole 33.

[0123] The specific structure of the manual maintenance switch 30 has been introduced in detail above and will not be elaborated here.

[0124] Next, with reference to Figures 4 - 8 , a specific example of the present application will be described in detail.

[0125] The 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.

[0126] The box body 10 has a storage space for storing 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.

[0127] The manual maintenance switch 30 includes a first mounting base 31 and a cover body 32. The cover body 32 is insertably and removably embedded in the first mounting base 31. The cover body 32 and the first mounting base 31 together 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.

[0128] 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.

[0129] 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 sealing member is disposed between the panel and the first wall 102, and the sealing member is disposed around the opening.

[0130] The cover body 32 is provided with a through hole 33, and the through hole 33 communicates with the cavity 30a. The manual maintenance switch 30 further includes a plugging member 34, and the plugging member 34 is detachably inserted into the through hole 33.

[0131] The battery device 100 further includes a first interlock terminal 311, a second interlock terminal 312, and a first conductive member 342. The first interlock terminal 311 and the second interlock terminal 312 are disposed on the first mounting base 31 and are both electrically connected to the battery management system. The first conductive member 342 is disposed on the plugging member 34. The first conductive member 342 is configured to: electrically connect the first interlock terminal 311 and the second interlock terminal 312 when the plugging member 34 closes the through hole 33; and disconnect the first interlock terminal 311 and the second interlock terminal 312 when the plugging member 34 opens the through hole 33.

[0132] Before the cover body 32 is inserted into the first mounting base 31, the plugging member 34 is removed from the through hole 33. At this time, the through hole 33 communicates with the cavity 30a and the interlock circuit is disconnected. During the process of inserting the cover body 32 into the first mounting base 31, the gas in the cavity 30a is discharged from the through hole 33, so that the air pressure inside and outside the cavity 30a is balanced, enabling the cover body 32 to be smoothly inserted in place. And since the lock circuit is disconnected, the high-voltage switch of the battery device 100 is closed, ensuring safety during operation. Then, the plugging member 34 is inserted into the through hole 33. At this time, the lock circuit is conducted and the high-voltage switch of the battery device 100 is turned on. Before the cover body 32 is pulled out of the first mounting base 31, the plugging member 34 is removed from the through hole 33. At this time, the through hole 33 communicates with the cavity 30a and the interlock circuit is disconnected. During the process of pulling out the cover body 32 from the first mounting base 31, the gas outside the cover body 32 enters the cavity 30a, so that the air pressure inside and outside the cavity 30a is balanced, enabling the cover body 32 to be smoothly inserted in place. And since the lock circuit is disconnected, the high-voltage switch of the battery device 100 is closed, achieving power-off before operation.

[0133] 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 manner. 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 accommodating 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 pluggably inserted into the first mounting seat, and the cover body and the first mounting seat jointly define a cavity; Wherein, the cover body is provided with a through hole, and the through hole communicates the cavity and the external space of the cover body.

2. The battery device according to claim 1, wherein The manual maintenance switch further includes a plugging member for opening or closing the through hole.

3. The battery device according to claim 2, characterized in that, The plugging member is detachably inserted into the through hole.

4. The battery device according to claim 3, characterized in that, A first sealing member is provided between the plugging member and the cover body, and the first sealing member is configured to seal the cover body and the plugging member.

5. The battery device according to claim 2, characterized in that, The battery device further includes a battery management system; The manual maintenance switch further includes a first interlock terminal, a second interlock terminal and a first conductive member. The first interlock terminal and the second interlock terminal are arranged on the first mounting seat and are both electrically connected to the battery management system, and the first conductive member is arranged on the plugging member; The first conductive member is configured to: electrically connect the first interlock terminal and the second interlock terminal when the plugging member closes the through hole; Disconnect the first interlock terminal and the second interlock terminal when the plugging member opens the through hole.

6. The battery device according to claim 5, wherein, The plugging member is detachably inserted into the through hole; The first conductive member includes a first conductive portion and a second conductive portion, and the first conductive portion and the second conductive portion are respectively used for plugging and mating with the first interlock terminal and the second interlock terminal to electrically connect the first interlock terminal and the second interlock terminal.

7. The battery device according to any one of claims 1-6, characterized in that, The manual maintenance switch further includes a first connection terminal and a second connection terminal. The first connection terminal and the second connection terminal are both 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 second conductive member, and the second 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 is integrally formed with the first mounting seat.

8. The battery device according to claim 7, 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.

9. The battery device according to claim 8, wherein The box body has a receiving space for accommodating the battery cell. The box body includes a first wall, and the first wall is provided with an opening that communicates the through hole and 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.

10. The battery device according to claim 9, characterized in that, The battery device further includes: A second sealing member is provided between the panel and the first wall and is arranged around the opening.

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

12. A manual maintenance switch, characterized in that, Comprising: A first mounting base and a cover body, the cover body being insertable and removable into the first mounting base, the cover body and the first mounting base jointly defining a cavity; Wherein, the cover body is provided with a through hole, and the through hole communicates the cavity and the external space of the cover body.

13. The manual maintenance switch according to claim 12, characterized in that, The manual maintenance switch further includes a plugging member, and the plugging member is detachably inserted into the through hole.

14. The manual maintenance switch according to claim 13, wherein, The manual maintenance switch further includes a first interlock terminal, a second interlock terminal and a first conductive member, the first interlock terminal and the second interlock terminal are disposed on the first mounting base and are used for electrical connection with the battery management system, and the first conductive member is disposed on the plugging member; The first conductive member is configured to: electrically connect the first interlock terminal and the second interlock terminal when the plugging member is inserted into the through hole.

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