Battery box, battery device and power utilization device

Abstract

The utility model provides a battery box, a battery device and a power utilization device, and relates to the technical field of batteries. The battery box comprises a box body and a first electric connecting piece, the box body is provided with a mounting cavity and a mounting opening, the mounting opening is communicated with the mounting cavity, and the battery module passes through the mounting opening, so that the battery module is mounted in the mounting cavity; the first electric connecting piece is provided with a first electric connecting part, and the first electric connecting part faces the mounting opening and is used for being connected and electrically conducted with a bus piece of the battery module; according to the battery device, after the battery module penetrates through the mounting opening and enters the mounting cavity, the first electric connecting part faces the mounting opening, and the bus piece of the battery module is connected with the first electric connecting part, so that the electric connection between the first electric connecting part and the bus piece is simply and conveniently completed, and the electrode leading-out structure of the battery device is simplified; therefore, the assembling work of the battery device is simple and convenient, and the assembling efficiency and the productivity of the battery device are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a battery box, a battery device and a power utilization device. BACKGROUND

[0002] With the continuous development of battery device technology, battery devices are gradually applied to the power field. With the demand for power and the improvement of efficiency, new requirements are put forward for the capacity of battery devices.

[0003] In related technologies, a battery device includes a box body and a battery module, and the battery module is arranged in the box body. The box wall of the box body surrounds the peripheral side of the battery module. When the battery module and the box body are assembled, the box body reverse-docking process needs to be used.

[0004] However, the internal space of the box body is limited, and after the box body is reverse-docked, the electrode lead-out arrangement of the battery module is difficult, resulting in a decrease in the production capacity of the battery device. UTILITY MODEL CONTENT

[0005] The present application provides a battery box, a battery device and a power utilization device, which can improve the production capacity of the battery device.

[0006] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme:

[0007] The present application provides a battery box, comprising:

[0008] a box body, the box body has a mounting cavity and a mounting opening, the mounting opening and the mounting cavity are communicated, and the mounting opening is used for the battery module to pass through so that the battery module is mounted in the mounting cavity;

[0009] a first electric connecting piece, the first electric connecting piece has a first electric connecting part, the first electric connecting part faces the mounting opening and is used for connecting and electrically conducting with a busbar of the battery module.

[0010] In some embodiments, the first electric connecting part includes a first connecting hole, the first connecting hole is used for the first fixing piece to pass through, so that the first electric connecting piece and the busbar are detachably connected;

[0011] wherein the first connecting hole extends in the direction from the bottom wall of the box body to the mounting opening.

[0012] In some embodiments, the box wall of the box body has a mounting groove, and the first electric connecting piece is arranged in the mounting groove.

[0013] In some embodiments, the box wall of the box body has a protruding part, and the protruding part forms the mounting groove.

[0014] In some embodiments, the battery box further comprises a protection member disposed in the mounting groove, the protection member surrounding a portion of the first electrical connecting member.

[0015] In some embodiments, a portion of the first electrical connecting member extends to an outside of the box body to lead out an electrode of the battery module.

[0016] In some embodiments, the first electrical connecting member has a second electrical connecting portion for leading out an electrode of the battery module.

[0017] In some embodiments, the battery box further comprises a second electrical connecting member disposed outside a wall of the box body, the second electrical connecting member being electrically connected to the first electrical connecting member through the second electrical connecting portion.

[0018] In some embodiments, the wall has a connecting port through which the second electrical connecting member is electrically connected to the first electrical connecting member through the second electrical connecting portion, the connecting port having a shape matching that of an end of the second electrical connecting member.

[0019] The connecting port extends along a thickness direction of the wall of the box body.

[0020] In some embodiments, the second electrical connecting portion comprises a second connecting hole extending along a thickness direction of the wall of the box body, the second electrical connecting member having a third connecting hole.

[0021] The battery box comprises a second fixing member penetrating the second connecting hole and the third connecting hole to connect the second electrical connecting member to the first electrical connecting member.

[0022] In some embodiments, the first electrical connecting member has a first extension section extending along a first direction perpendicular to a bottom wall of the box body to the mounting opening.

[0023] The first electrical connecting portion is disposed on the first extension section.

[0024] In some embodiments, the first electrical connecting member further has a second extension section connected to a side of the first extension section away from the battery module.

[0025] The second extension section extends in a direction intersecting that of the first extension section.

[0026] In some embodiments, the second extension section extends along a direction from the bottom wall of the box body to the mounting opening.

[0027] In some embodiments, the first electrical connector is provided with a temperature detection member for detecting the temperature of the first electrical connector.

[0028] In some embodiments, the first electrical connector is provided with a third fixing member, and the temperature detection member is detachably connected to the first electrical connector through the third fixing member.

[0029] In some embodiments, the third fixing member is connected to the first electrical connector in a clamping manner.

[0030] In some embodiments, the temperature detection member is connected to the third fixing member in a clamping manner.

[0031] In some embodiments, the box is further provided with a connection terminal, and the connection terminal is electrically connected to the temperature detection member.

[0032] In some embodiments, the battery box further comprises a torque detection member, and the torque detection member is arranged on the first fixing member, and the torque detection member is used for detecting the torque of the first fixing member.

[0033] In some embodiments, the first electrical connector is provided with a deformation detection member for detecting the deformation of the first electrical connector.

[0034] In some embodiments, the battery box further comprises a torque detection member, and the torque detection member is arranged on the second fixing member, and the torque detection member is used for detecting the torque of the second fixing member.

[0035] In some embodiments, the first electrical connector is provided with a deformation detection member for detecting the deformation of the first electrical connector.

[0036] In some embodiments, the box is further provided with a connection terminal, and the connection terminal is electrically connected to at least one of the torque detection member and the deformation detection member.

[0037] In a second aspect, the present application provides a battery device, comprising:

[0038] The battery box provided in the first aspect;

[0039] A battery module is installed in the mounting cavity of the battery box; and the busbar of the battery module and the first electrical connector of the battery box are connected and electrically conducted through the first electrical connection part.

[0040] In some embodiments, the battery device comprises a first fixing member, and the busbar is provided with a fourth connecting hole.

[0041] The first fixing member is arranged through the fourth connecting hole and the first connecting hole of the first electric connecting member, so that the busbar and the first electric connecting member are connected and electrically conducted.

[0042] In some embodiments, the busbar has a first busbar extension, the first busbar extension and the first electric connecting member are connected and electrically conducted through a first electric connecting part.

[0043] The first busbar extension extends along a first direction.

[0044] In some embodiments, the busbar has a second busbar extension, the second busbar extension is connected to a side of the first busbar extension away from the first electric connecting part, and the second busbar extension and the pole of the battery module are electrically conducted.

[0045] In some embodiments, the extension direction of the second busbar extension intersects with the extension direction of the first busbar extension.

[0046] In some embodiments, the battery device further comprises a battery management system, the battery management system is electrically connected with at least one of the temperature detecting member, the torque detecting member and the deformation detecting member of the battery box.

[0047] In some embodiments, the battery device further comprises a battery management system, the battery management system is electrically connected with the connecting terminal on the battery box.

[0048] In a third aspect, the present application provides a power utilization device comprising the battery device provided in the second aspect.

[0049] The battery box, the battery device and the power utilization device provided in the present application, wherein the battery box comprises a box body and a first electric connecting member. The box body has a mounting cavity and a mounting opening, the mounting opening and the mounting cavity are communicated, the mounting opening is used for allowing the battery module to pass through so that the battery module is mounted in the mounting cavity; the first electric connecting member has a first electric connecting part, the first electric connecting part faces the mounting opening and is used for connecting and electrically conducting with the busbar of the battery module. In the present application, after the battery module passes through the mounting opening and enters the mounting cavity, the busbar of the battery module is connected with the first electric connecting part through the setting of the first electric connecting part facing the mounting opening, so that the electrical connection between the first electric connecting member and the busbar is simply and conveniently completed, the electrode leading-out structure of the battery device is simplified, the assembly work of the battery device is simple and convenient, and the assembly efficiency and the production capacity of the battery device are improved. BRIEF DESCRIPTION OF DRAWINGS

[0050] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0051] Figure 1 A schematic diagram of the battery device provided in the embodiments of this application;

[0052] Figure 2 for Figure 1 A magnified view of the local structure of the dashed box area;

[0053] Figure 3 Schematic diagram of the internal structure of the battery device provided in the embodiments of this application Figure 1 ;

[0054] Figure 4 for Figure 3 A magnified view of the local structure of the dashed box area;

[0055] Figure 5 Schematic diagram of the internal structure of the battery device provided in the embodiments of this application Figure 2 ;

[0056] Figure 6 for Figure 5 A magnified view of the local structure of the dashed box area;

[0057] Figure 7 A schematic diagram of a battery box provided in this application embodiment. Figure 1 ;

[0058] Figure 8 for Figure 7 A magnified view of the local structure of the dashed box area;

[0059] Figure 9 A schematic diagram of a battery box provided in this application embodiment. Figure 2 ;

[0060] Figure 10 for Figure 9 A magnified view of the local structure of the dashed box area.

[0061] Explanation of reference numerals in the attached figures:

[0062] 100-Battery Box;

[0063] 110 - Housing; 111 - Mounting cavity; 112 - Mounting opening; 113 - Mounting groove; 114 - Protrusion; 115 - Connection port;

[0064] 120, 120a, 120b, 120c, 120d - First electrical connector; 121 - First connecting hole; 122 - Second fastener; 123 - Second connecting hole; 124 - First extension section; 125 - Second extension section; 126 - Third fastener;

[0065] 130 - First fastener;

[0066] 140 - Protective component;

[0067] 150 - Connecting terminal;

[0068] 160, 160a, 160b - Second electrical connection;

[0069] 200 - Battery device; 210, 210a, 210b - Battery module; 211 - Busbar; 2111 - Fourth connection hole; 2112 - First busbar extension section; 2113 - Second busbar extension section. Detailed Implementation

[0070] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0071] Firstly, combining Figures 1-10 This application provides a battery box 100, which can be applied to a battery device 200. The battery box 100 includes a box body 110, which has a mounting cavity 111 and a mounting opening 112. The mounting opening 112 communicates with the mounting cavity 111. The mounting opening 112 allows a battery module 210 to pass through, so that the battery module 210 is installed in the mounting cavity 111. Thus, the battery module 210 is installed inside the box body 110, providing protection for the battery module 210 and extending its service life. Furthermore, when the battery box 100 is applied to the battery device 200, it facilitates the installation and transportation of the battery device 200.

[0072] In some embodiments, the housing 110 has two mounting cavities 111, which are separately arranged and used to mount the battery modules 210. It should be noted that there can be multiple battery modules 210, with some modules mounted in the same mounting cavity 111 and others mounted in a different mounting cavity 111. This application does not specify the number of battery modules 210 in different mounting cavities 111.

[0073] Of course, in some embodiments, the housing 110 may also have multiple mounting cavities 111, so that the housing 110 can accommodate more battery modules 210, thereby increasing the energy density and capacity of the battery device 200 when the battery housing 100 is applied to the battery device 200, so that the battery device 200 can be applied to areas with greater power demand.

[0074] The battery module 210 is located inside the housing 110. The battery module 210 leads out its electrodes through a busbar 211, which can be an aluminum busbar or a copper busbar. Ultimately, all the battery modules 210 lead out their electrodes to the housing 110 through a single busbar 211 for electrical connection with other battery devices 200 or electrical appliances. During the assembly of the battery device 200, due to the large height of the casing 110, the battery module 210 needs to be installed in the mounting cavity 111 of the casing 110 using an inverted mounting process. However, the space inside the casing 110 is limited, and the wiring of the busbar 211 is difficult when using the inverted mounting process. As a result, it is difficult for the busbar 211 to lead the electrodes of the battery module 210 out of the casing 110. If the busbar 211 is used to lead out the electrodes of the battery module 210, the assembly difficulty and assembly process of the battery device 200 will be complicated, resulting in a reduction in the production capacity of the battery device 200.

[0075] To solve the above problems, combined with Figure 4 , Figure 6 , Figure 8 , Figure 10 In this embodiment, the battery box 100 further includes a first electrical connector 120. This allows for electrical connection and conduction between the first electrical connector 120 and the busbar 211 of the battery module 210, enabling the electrodes of the battery module 210 to be led out via the first electrical connector 120. This reduces the wiring difficulty of the busbar 211, simplifies the battery manufacturing process, and thereby improves the assembly efficiency and production capacity of the battery device 200.

[0076] For example, the first electrical connector 120 has a first electrical connection portion facing the mounting opening 112, and the first electrical connection portion is used to connect and electrically conduct with the busbar 211 of the battery module 210.

[0077] It is understandable that during the assembly of the battery box 100 and the battery module 210, after the battery module 210 enters the mounting cavity 111 through the mounting opening 112, the busbar 211 of the battery module 210 is connected to the first electrical connection part through the setting of the first electrical connection part facing the mounting opening 112, thereby completing the electrical connection between the first electrical connection part 120 and the busbar 211 in a simple and convenient way. This simplifies the electrode lead-out structure of the battery device 200, making the assembly of the battery device 200 simple and convenient, thereby improving the assembly efficiency and production capacity of the battery device 200.

[0078] It should be noted that the first electrical connection part and the busbar 211 can be connected by a mating method, such as a snap-fit ​​and slot connection structure, a protrusion and groove connection structure, etc. This application embodiment does not make specific requirements on the connection method between the first electrical connection part and the busbar 211.

[0079] Thus, in this embodiment, by connecting the first electrical connection portion and the busbar 211 of the battery module 210, the electrodes of the battery module 210 are led out through the first electrical connection portion 120. This makes the structural arrangement of the electrodes of the battery module 210 no longer limited by the internal space of the housing 110. Furthermore, the orientation of the first electrical connection portion toward the mounting opening 112 makes the connection between the busbar 211 and the first electrical connection portion more convenient. This facilitates the assembly of the battery device 200 when the battery housing 100 is used in the battery device 200, thereby increasing the production capacity of the battery device 200. In addition, by connecting the first electrical connection portion 120 and the busbar 211, the material usage of the busbar 211 can be reduced, thereby reducing the cost of the battery device 200.

[0080] See Figure 8 , Figure 10 In some embodiments, the first electrical connection includes a first connection hole 121 for the first fixing member 130 to pass through, so that the first electrical connector 120 and the busbar 211 can be detachably connected. The first connection hole 121 extends along the bottom wall of the housing 110 to the mounting opening 112. Thus, the first fixing member 130 and the first connection hole 121 form a hole-and-axis mating connection, facilitating the connection between the first electrical connector 120 and the busbar 211, thereby facilitating the assembly of the battery box 100 and the battery module 210, and improving the assembly efficiency and production capacity of the battery device 200.

[0081] It should be noted that the cross-sectional outline of the first fixing member 130 and the outline of the first connecting hole 121 in this embodiment are adapted to each other. For example, the cross-sectional outline of the first fixing member 130 can be circular, square, or polygonal, and the outline of the corresponding first connecting hole 121 can also be circular, square, or polygonal. This embodiment does not make specific requirements on the outline shape of the first fixing member 130 and the first connecting hole 121. The busbar 211 and the first fixing member 130 in this embodiment can be connected by plugging or snapping, and this embodiment does not make specific requirements on this.

[0082] It should be noted that the first fixing member 130 and the first connecting hole 121 can be connected by an interference fit to ensure a stable connection between the first fixing member 130 and the first electrical connector 120. This can prevent the busbar 211 from becoming loose after being connected to the first electrical connector 120 through the first fixing member 130 and the first connecting hole 121. This can prevent the internal resistance of the battery device 200 from increasing due to unstable connection between the busbar 211 and the first electrical connector 120, thereby improving the thermal safety of the battery device 200 and extending its service life.

[0083] Furthermore, the first connecting hole 121 extends along the bottom wall of the housing 110 to the mounting opening 112. The first connecting hole 121 can be a blind hole or a through hole, and this application embodiment does not require it to be either.

[0084] See Figure 4 , Figure 6 , Figure 8 and Figure 10 In some embodiments, the casing 110 has a mounting groove 113 in its wall, and the first electrical connector 120 is disposed within the mounting groove 113. By placing the first electrical connector 120 within the mounting groove 113, the mounting groove 113 accommodates the first electrical connector 120, reducing the space occupied by the first electrical connector 120 in the mounting cavity 111. This allows the battery casing 100 to accommodate more battery modules 210, thereby increasing the energy density and capacity of the battery device 200 when the battery casing 100 is used in the battery device 200.

[0085] In some embodiments, the casing 110 has a protrusion 114 on its wall, which protrudes outward relative to the center of the casing 110 to form a mounting groove 113 through the protrusion 114 and part of the casing wall. In this way, the mounting groove 113 does not occupy the mounting space of the battery module 210, allowing the mounting cavity 111 to accommodate more battery modules 210. Furthermore, when the battery casing 100 is used in the battery device 200, it can improve the energy density and capacity of the battery device 200.

[0086] In some embodiments, the battery box 100 further includes a protective member 140 disposed within a mounting groove 113, which surrounds a portion of the periphery of the first electrical connector 120.

[0087] For example, the protective element 140 can be a plastic insulating element, etc. By surrounding a portion of the first electrical connector 120, the protective element 140 forms an isolation effect between the first electrical connector 120 and the housing 110, and between the first electrical connector 120 and the battery module 210, thereby improving the safety of the battery device 200.

[0088] In addition, the protective component 140 is placed in the mounting groove 113 so that the groove wall of the mounting groove 113 provides positioning and support for the protective component 140, which restricts the positional movement of the protective component 140 relative to the housing 110. This further prevents the first electrical connector 120 from contacting other components on the housing 110, thus preventing internal short circuits in the battery device 200 caused by such contact, thereby improving the safety of the battery device 200.

[0089] It is easy to understand that the first electrical connector 120 is connected to the busbar 211 of the battery module 210, and through the structural arrangement of the first electrical connector 120, the electrodes of the battery module 210 can be led out to the outside of the housing 110. Optionally, a portion of the first electrical connector 120 extends to the outside of the housing 110 to lead out the electrodes of the battery module 210.

[0090] For example, the end of the first electrical connector 120 near the wall of the housing 110 may extend toward the mounting opening 112 and through the mounting opening 112 to the outside of the housing 110, so as to bring out the electrodes of the battery module 210 when the battery box 100 and the battery module 210 are connected.

[0091] In some embodiments, a connecting structure may be provided on the wall of the housing 110. The connecting structure has a connecting cavity to connect the mounting cavity 111 and the outside of the housing 110. The first electrical connector 120 extends through the connecting cavity of the connecting structure to the outside of the housing 110 to bring out the electrodes of the battery module 210 when the battery box 100 and the battery module 210 are connected.

[0092] It should be noted that the connection structure of the first electrical connector 120 leading out the electrodes of the battery module 210 is not limited to the two implementation methods. Any electrical connection structure that leads out the electrodes of the battery module 210 from the housing 110 is acceptable.

[0093] As an optional embodiment of this application, the first electrical connector 120 has a second electrical connection portion for leading out the electrodes of the battery module 210.

[0094] In some embodiments, the second electrical connection portion may be embedded in the inner side of the box wall of the box 110, and the second electrical connection portion may also extend to the outer side of the box wall of the box 110. This application embodiment does not require this.

[0095] It should be noted that the second electrical connection can be a nickel block, a conductive threaded connector, etc., and there are no specific requirements for it.

[0096] Combination Figure 1 , Figure 2 , Figure 4 , Figure 6 In some embodiments, as one optional implementation, the battery box 100 further includes a second electrical connector 160, which is disposed on the wall of the box body 110, and the second electrical connector 160 and the first electrical connector 120 are electrically connected through the second electrical connection portion.

[0097] In some embodiments, the second electrical connector 160 may be a copper busbar, an aluminum busbar, or a connecting cable. One end of the second electrical connector 160 is connected to the second electrical connection portion of the first electrical connector 120, and the other end of the second electrical connector 160 may be connected to the corresponding electrodes of other battery devices 200, thereby realizing electrical connection between different battery devices 200.

[0098] When the current between the two battery devices 200 is small, the second electrical connector 160 can be made of aluminum busbar. This allows for a reduction in the weight of the battery case 100 while still meeting the overcurrent performance requirements between the battery devices, thus contributing to a lightweight design. It is understood that when the battery case 100 is used with the battery device 200, it reduces the weight of the battery device 200, thereby contributing to a lightweight design.

[0099] When the current between the two battery devices 200 is large, if the second electrical connector 160 is made of aluminum busbar, the thickness of the aluminum busbar needs to be increased to increase the cross-sectional area of ​​the aluminum busbar in order to meet the overcurrent requirements between the battery devices 200. This leads to an increase in the cost and space ratio of the battery box 100. When the battery box 100 is used in the battery device 200, the cost and space ratio of the battery device 200 increase.

[0100] Therefore, the second electrical connector 160 can be made of copper busbar, which has better conductivity than aluminum busbar. Thus, for the same cross-sectional area, the current-carrying capacity of copper busbar is better than that of aluminum busbar. In this way, while meeting the current-carrying requirements between the battery devices 200, the use of copper busbar can reduce the thickness of copper busbar to a certain extent compared to aluminum busbar, further reducing the space ratio of battery box 100 and battery device 200.

[0101] However, when the second electrical connector 160 is a copper busbar or an aluminum busbar, the structure of the second electrical connector 160 is diverse due to the different positions of the first electrical connectors 120 and the limited installation space on the outer side of the casing 110. The second electrical connectors 160 may also interfere with each other, making the assembly process of the second electrical connector 160 into the casing 110 more complicated, reducing the production efficiency of the battery box 100 and the battery device 200, and reducing the production capacity of the battery device 200.

[0102] Optionally, the enclosure wall has a connection port 115, through which a second electrical connector 160 passes and is electrically connected to the first electrical connector 120 via the second electrical connection portion.

[0103] Optionally, the connection port 115 is a communicating structure, such as a communicating hole, so that the connection port 115 is formed through the communicating cavity of the communicating structure. The second electrical connector 160 may be partially located inside the connection port 115, and the other end of the second electrical connector 160 extends toward the outer side of the box wall of the housing 110 and is partially exposed on the outer side of the box wall of the housing 110. This is not required in the embodiments of this application.

[0104] It is understood that the second electrical connector 160 is disposed on the wall of the housing 110. The second electrical connector 160 and the first electrical connector 120 are electrically connected, allowing the electrodes of the battery module 210 to be led out. Thus, when the battery module 210 has multiple electrodes, the corresponding electrodes can be led out of the housing 110 through different first electrical connectors 120 and second electrical connectors 160. In this way, transferring the electrodes of the battery module 210 to the outside of the housing 110 saves the mounting cavity 111 occupied by the transfer between battery modules 210, allowing the mounting cavity 111 to accommodate more battery modules 210, thereby improving the energy density and capacity of the battery device 200. Simultaneously, when the battery box 100 is used in the battery device 200, it facilitates the electrical connection between the battery device 200 and other electrical components.

[0105] Therefore, in one optional embodiment of this application, the second electrical connector 160 includes a connecting cable (not shown in the figure), and a connector is provided at the end of the connecting cable. The connector can be connected to and electrically connected to the second electrical connection part of the first electrical connector 120. Thus, the connecting cable provides flexibility, and there is no significant interference between the second electrical connectors 160. The assembly process of the second electrical connectors 160 is simple, reducing the installation difficulty of the battery box 100 and the battery device 200, and increasing the production capacity of the battery box 100 and the battery device 200. Furthermore, the insulation of the connecting cable is superior to that of copper and aluminum busbars, making the application of the battery box 100 in the battery device 200 safer and more reliable.

[0106] In some embodiments, the electrodes of the battery module 210 are led out through the first electrical connector 120 at different locations on different side walls of the housing 110. When two battery devices 200 are electrically connected to the first electrical connector 120 via the second electrical connector 160, the complexity of the wiring layout of the second electrical connector 160 increases, affecting the production capacity of the battery housing 100 and the battery devices 200. Furthermore, the increased wiring length of the second electrical connector 160 makes it difficult to reduce the material costs of the battery housing 100 and the battery devices 200.

[0107] Therefore, in one optional embodiment, the electrodes of the battery module 210, after being led out through the first electrical connectors 120, can all be located on the same side wall of the housing 110. In this way, by arranging each of the first electrical connectors 120 on the same side wall of the housing 110, the wiring difficulty of the second electrical connector 160 is reduced, facilitating the connection between the second electrical connector 160 and the first electrical connector 120, thus reducing the installation difficulty of the battery box 100 and the battery device 200, and increasing the production capacity of the battery box 100 and the battery device 200. Furthermore, the relatively compact spacing between the first electrical connectors 120 on the same side wall of the housing 110 reduces the wiring length of the second electrical connector 160, thereby reducing the material usage of the second electrical connector 160 and lowering the material cost of the battery box 100 and the battery device 200.

[0108] As an optional implementation, the shape of the connection port 115 matches the shape of the end of the second electrical connector 160. Thus, the second electrical connector 160 and the connection port 115 form a hole-and-shaft mating structure, and their formations are mutually matched. This allows the wall surface of the housing at the connection port 115 to provide support and fastening for the second electrical connector 160, ensuring a stable electrical connection between the second electrical connector 160 and the first electrical connector 120. When the battery housing 100 is applied to the battery device 200, this ensures stable internal electrical connections within the battery device 200, reduces the internal resistance of the battery device 200, decreases the heat generated by the battery device 200, and improves the thermal safety of the battery device 200.

[0109] See Figure 4 , Figure 6 As an optional implementation, the second electrical connection part includes a second connection hole 123, which extends along the thickness direction of the box wall of the box body 110; the battery box 100 also includes a second fixing member 122, which passes through the second connection hole 123 and the third connection hole, so that the second electrical connection member 160 is connected to the first electrical connection member 120.

[0110] In this embodiment, the second fixing member 122 can be a columnar structural member, etc., and the cross-sectional shape of the second fixing member 122 can be square, circular, triangular, polygonal, irregular, etc. Correspondingly, the shapes of the second connecting hole and the third connecting hole match the cross-sectional shape of the second fixing member 122. Thus, in this embodiment, the second fixing member 122 passes through the second connecting hole 123 and the third connecting hole to form a simple hole-shaft connection structure, which facilitates the connection between the second electrical connector 160 and the first electrical connector 120, thereby facilitating the assembly and production of the battery box 100 and the battery device 200.

[0111] It should be noted that when the second fixing member 122 is installed in the second connecting hole 123 and the third connecting hole, the second fixing member 122 can be connected to the second connecting hole 123 and the third connecting hole by an interference fit, so as to make the connection between the second electrical connector 160 and the first electrical connector 120 stable, avoid the second electrical connector 160 and the first electrical connector 120 from loosening, which would cause an increase in the internal resistance of the battery device 200, thereby improving the thermal safety of the battery device 200 and extending the service life of the battery device 200.

[0112] It is easy to understand that when the second fastener 122 passes through the second connecting hole 123 and the third connecting hole, errors are unavoidable during the manufacturing process of the second fastener 122, the second connecting hole 123 and the third connecting hole. This leads to a decrease in the stability of the hole-shaft mating connection structure formed by the second fastener 122 and the second connecting hole 123 and the third connecting hole, and makes installation inconvenient.

[0113] To solve the above problems, in an optional embodiment of this application, at least one of the second connecting hole 123 and the third connecting hole has a second internal thread, and the second fixing member 122 has a second external thread. The second fixing member 122 is connected by the cooperation of the second external thread and the second internal thread, so that the second electrical connector 160 is connected to the first electrical connector 120.

[0114] Optionally, when the second connecting hole 123 has a second internal thread, the second external thread of the second fixing member 122 and the second internal thread of the second connecting hole 123 are engaged and connected, and then the fixing member 122 is inserted into the third connecting hole of the second electrical connector 160, forming a hole-shaft connection structure with the third connecting hole. It should be noted that the third connecting hole can be a smooth hole in this case.

[0115] Optionally, when the third connecting hole has a second internal thread, the second fixing member 122 passes through the second connecting hole 123 and is connected by the engagement of the second external thread of the second fixing member 122 and the second internal thread of the second connecting hole 123, so that the second electrical connector 160 is connected to the first electrical connector 120. It should be noted that the second fixing member 122 and the second connecting hole 123 form a hole-shaft connection structure, and the second connecting hole 123 can be a smooth hole.

[0116] Optionally, when both the second connecting hole 123 and the third connecting hole have internal threads, the second external thread of the second fixing member 122 can sequentially engage with the second internal thread of the second connecting hole 123 and the second internal thread of the third connecting hole, so that the second electrical connector 160 is connected to the first electrical connector 120.

[0117] Thus, the second electrical connector 160 and the first electrical connector 120 form a stable threaded fastening detachable connection structure through the second internal thread and the second external thread. The threaded connection forms a mechanical fastening force, making the connection structure of the second electrical connector 160 and the first electrical connector 120 compact and stable, so as to prevent the second electrical connector 160 and the first electrical connector 120 from disengaging during long-term use of the battery device 200.

[0118] See Figure 4 , Figure 6 , Figure 8 , Figure 10 As an optional implementation, the first electrical connector 120 has a first extension 124, which extends along a first direction perpendicular to the bottom wall of the housing 110 to the mounting opening 112. Furthermore, a first electrical connection portion is disposed on the first extension 124. It is understood that the extension direction of the first extension 124 can be parallel to the extension direction of the bottom wall of the housing 110, or form an angle with the extension direction of the bottom wall of the housing 110, thus extending the first electrical connector 120 toward the busbar 211 of the battery module 210. By disposing the first electrical connection portion on the first extension 124, when the battery box 100 is inverted on the battery module 210, the first electrical connector 120 and the busbar 211 of the battery module 210 are connected, reducing the assembly difficulty of the first electrical connector 120 and the busbar 211 of the battery module 210, and further improving the assembly efficiency and production capacity of the battery device 200.

[0119] Optionally, the first electrical connector 120 further includes a second extension 125, which is connected to the side of the first extension 124 opposite to the battery module 210. The extension direction of the second extension 125 intersects the extension direction of the first extension 124. This reduces the space occupied by the first electrical connector 120, saves space in the mounting cavity 111 of the housing 110, and improves the space utilization of the mounting cavity 111.

[0120] It should be noted that in this embodiment, the extension direction of the second extension segment 125 intersects with the extension direction of the first extension segment 124. That is to say, there is an angle between the extension direction of the second extension segment 125 and the extension direction of the first extension segment 124. The angle can be an acute angle, an obtuse angle, or a right angle. This embodiment does not limit this.

[0121] For example, the second extension 125 extends along the bottom wall of the housing 110 to the mounting opening 112. That is, the second extension 125 can extend along the height direction of the housing 110, and the extension direction of the second extension 125 still intersects with and is perpendicular to the extension direction of the first extension 124.

[0122] In some embodiments, the second electrical connection is disposed on the second extension 125. In conjunction with the aforementioned embodiments, the first electrical connector 120 is connected and electrically conductive to both the busbar 211 and the second electrical connector 160 of the battery module 210. When the connection between the busbar 211 and the second electrical connector 160 and the first electrical connector 120 is unstable, the resistance of the first electrical connector 120 increases. At this time, the heat generated on the first electrical connector 120 rises, which can easily lead to a temperature increase in the battery device 200, creating a thermal safety hazard and deteriorating the safety of the battery device 200.

[0123] To address the aforementioned issues, in some embodiments, a temperature sensor is provided on the first electrical connector 120 to detect its temperature. This temperature sensor allows for real-time acquisition of the temperature of the first electrical connector 120. By monitoring the temperature changes of the first electrical connector 120, the connection status between the first electrical connector 120, the second electrical connector 160, and the battery module 210 can be determined. This enables users to respond promptly based on the temperature value of the first electrical connector 120 obtained by the temperature sensor, reducing potential safety hazards in the battery device 200 and improving its operational safety.

[0124] There are various connection structures between the temperature detection element and the first electrical connector 120. For example, the temperature detection element can be directly attached to the first electrical connector 120, or the temperature detection element can be fastened to the first electrical connector 120 by screws, bolts, etc. This application embodiment does not make specific requirements in this regard.

[0125] Combination Figures 7-10 As an optional embodiment of this application, a third fixing member 126 is provided on the first electrical connector 120, and the temperature detection element is detachably connected to the first electrical connector 120 through the third fixing member 126. Thus, the temperature detection element is detachably connected to the first electrical connector 120 through the third fixing member 126, making the installation and removal of the temperature detection element more convenient. Furthermore, the detachable connection method in this embodiment facilitates the replacement of damaged temperature detection elements, preventing thermal safety accidents in the battery device 200 caused by the failure of the temperature detection element.

[0126] It should be noted that the third fastener 126 can be disposed on the second extension 125 of the first electrical connector 120. The third fastener 126 and the first electrical connector 120 can be detachably connected by means of threaded connection structure, snap-fit ​​connection structure, plug-in connection structure, etc., and this application embodiment does not require such a connection.

[0127] For example, see Figure 8 and Figure 10 The third fastener 126 is connected to the first electrical connector 120 by a snap-fit ​​connection.

[0128] In this embodiment, a slot is provided on the second extension 125 of the first electrical connector 120, and a buckle is provided on the third fixing member 126. The number and position of the buckles and slots are arranged in a one-to-one correspondence. The third fixing member 126 is connected to the first electrical connector 120 through the buckles and slots. It is easy to understand that the connection structure of the buckles and slots is simple and will not cause the first electrical connector 120 to occupy most of the space of the mounting cavity 111, thereby preventing the various components on the first electrical connector 120 from interfering with each other and the battery module 210. This makes the installation process of the battery box 100 and the battery module 210 smooth, thereby improving the assembly efficiency of the battery device 200 and further increasing the production capacity of the battery device 200.

[0129] In this embodiment, the temperature sensing element is connected to the third fixing member 126 by a snap-fit ​​connection. Thus, the temperature sensing element and the third fixing member 126 form a detachable connection structure, facilitating the installation and removal of the temperature sensing element, reducing the maintenance difficulty of the temperature sensing element, and also improving the assembly efficiency of the battery box 100.

[0130] It should be noted that the third fixing member 126 may be provided with a slot or a protrusion, etc. The slot or protrusion of the temperature detection member and the third fixing member 126 are compatible with each other so that the temperature detection member and the third fixing member 126 can be engaged.

[0131] For example, the temperature detection device may be a temperature sensor, a thermistor, etc., but this application embodiment does not require it to be.

[0132] In some implementations, the temperature sensor can be electrically connected to a controller at the user end, so that the controller at the user end can display the temperature signal acquired by the temperature sensor to the user.

[0133] For example, when the battery box 100 and battery module 210 are assembled and the battery device 200 is applied to a vehicle, the temperature sensor can be electrically connected to the vehicle's controller to output the detected temperature value to the user through the vehicle's controller. When the battery device 200 is applied to a computer, the temperature sensor can be connected to the computer's controller and output the detected temperature value to the user through the computer's controller.

[0134] It is easy to understand that the temperature sensor can be electrically connected to the controller via a wiring harness. In an optional embodiment, the housing 110 is also provided with a connection terminal 150, which is electrically connected to the temperature sensor.

[0135] For example, the connection terminal 150 and the temperature sensor are connected via a wiring harness. The connection terminal 150 can be used to electrically connect to the controller at the user end, or the connection terminal 150 can be electrically connected to the battery management system (BMS) of the battery device 200. This application embodiment does not require this.

[0136] In conjunction with the aforementioned embodiments, the first electrical connector 120 and the busbar 211 are connected by the first fixing member 130, and the first electrical connector 120 and the second electrical connector 160 are connected by the second fixing member 122. During transportation or use, the battery device 200 is prone to unstable connections between the first electrical connector 120 and the busbar 211, as well as the second electrical connector 160, due to bumps and the natural aging of the first fixing member 130 and the second fixing member 122. This can easily lead to thermal safety accidents in the battery device 200. By using the temperature detection device in the aforementioned embodiments to detect the temperature of the first electrical connector 120, thermal runaway of the battery device 200 and other overheating malfunctions can be prevented, thereby enhancing the safety of the battery device 200 in use.

[0137] In one optional embodiment of this application, a torque detection element is further included. The torque detection element is disposed on at least one of the first fixing member 130 and the second fixing member 122, and is used to detect the torque of the first fixing member 130 and the second fixing member 122. Thus, by connecting the first fixing member 130 and the second fixing member 122 with the torque detection element, the torque of the first fixing member 130 and the second fixing member 122 is detected, and the stability of the connection between the first fixing member 130 and the second fixing member 122 is determined based on the torque changes of the first fixing member 130 and the second fixing member 122.

[0138] In some implementations, the torque detector and the temperature detector can be combined. In this way, the connection status between the first electrical connector 120, the second electrical connector 160 and the bus 211 can be determined by the torque and temperature. By combining various detection methods, users can accurately judge the usage status of the battery device 200 and improve the safety of the battery device 200.

[0139] In some embodiments, a deformation detection element is provided on the first electrical connector 120, which is used to detect the deformation of the first electrical connector 120.

[0140] It is easy to understand that after the first electrical connector 120 is connected to the first fixing member 130 and the busbar 211, the first electrical connector 120 will undergo a certain deformation under the mechanical fastening force of the first fixing member 130. As the connection of the first fixing member 130 becomes loose, the first electrical connector 120 will deform. Therefore, in this embodiment of the application, the deformation of the first electrical connector 120 is obtained by the deformation detection device, which helps the user to judge whether the first fixing member 130 is loose, thereby preventing the battery device 200 from heating up due to the increased resistance between the first electrical connector 120 and the busbar 211, and further ensuring the safe use of the battery device 200.

[0141] Similarly, the first electrical connector 120 is connected to the second fastener 122 and the second electrical connector 160 via a fastener. Under the mechanical fastening force of the second fastener 122, the first electrical connector 120 will undergo a certain deformation. As the connection of the second fastener 122 loosens, the first electrical connector 120 will deform. Therefore, in this embodiment, the deformation of the first electrical connector 120 is obtained by a deformation detection device, which helps the user to determine whether the second fastener 122 is loose, thereby preventing the increase in resistance between the first electrical connector 120 and the second electrical connector 160 from causing the battery device 200 to heat up, and further ensuring the safe use of the battery device 200.

[0142] It should be noted that the temperature detection element, torque detection element, and deformation detection element in this application embodiment can be combined with each other. This application embodiment does not specify the specific combination form of these three elements. By using different detection methods through combinations of these three elements, users can accurately determine the usage status of the battery device 200, thereby improving the safety of the battery device 200. The deformation detection element can be a stress strain gauge, etc.

[0143] In some embodiments, the housing 110 is further provided with a connection terminal 150, which is electrically connected to at least one of the torque detection element and the deformation detection element. It is understood that the connection terminal 150 is connected to the torque detection element and the deformation detection element via a wiring harness. The connection terminal 150 can be used to electrically connect to the user's controller, or it can be electrically connected to the battery management system (BMS) of the battery device 200; however, this embodiment does not require such a connection.

[0144] It should be noted that the connection terminal 150 in this embodiment may be the same connection terminal 150 as the connection terminal 150 mentioned in the foregoing embodiments, or it may be a different connection terminal 150. This embodiment does not require this.

[0145] The following is in conjunction with the appendix Figures 1-6 The following describes one embodiment of the present application, taking two battery modules 210 as an example.

[0146] First, two battery modules 210 are defined as battery module 210a and battery module 210b.

[0147] The positive terminal of battery module 210a is connected to and electrically conductive with the first electrical connector 120a, and the negative terminal of battery module 210a is connected to and electrically conductive with the first electrical connector 120b. Thus, the positive terminal of battery module 210a is led out to the outside of housing 110 via the first electrical connector 120a, and the negative terminal of battery module 210a is led out to the outside of housing 110 via the first electrical connector 120b.

[0148] The positive terminal of battery module 210b is connected to and electrically conductive with the first electrical connector 120c, and the negative terminal of battery module 210b is connected to and electrically conductive with the first electrical connector 120d. Thus, the positive terminal of battery module 210b is led out to the outside of housing 110 via the first electrical connector 120c, and the negative terminal of battery module 210b is led out to the outside of housing 110 via the first electrical connector 120d.

[0149] The two ends of the second electrical connector 160a are connected to the first electrical connector 120a and the first electrical connector 120d, respectively, and the two ends of the second electrical connector 160b are connected to the first electrical connector 120b and the first electrical connector 120c, respectively. In this way, the battery module 210a and the battery module 210b are connected in series and electrically conductive.

[0150] Secondly, embodiments of this application provide a battery device 200, including: the battery box 100 and the battery module 210 provided in the first aspect. The battery module 210 is installed in the mounting cavity 111 of the battery box 100. The busbar 211 of the battery module 210 and the first electrical connector 120 of the battery box 100 are connected and electrically conductive through the first electrical connection portion.

[0151] The battery device 200 provided in this application embodiment includes the battery box 100 provided in the first direction. The structure of the battery box 100 facilitates the circuit connection of the battery device 200, reduces the installation difficulty of the battery device 200, and increases the production capacity of the battery device 200.

[0152] See Figure 8 , Figure 10 The busbar 211 is provided with a fourth connection hole 2111; the first fixing member 130 passes through the fourth connection hole 2111 and the first connection hole 121 of the first electrical connector 120, so that the busbar 211 and the first electrical connector 120 are connected and electrically conductive. Thus, in this embodiment of the application, the first fixing member 130 passing through the first connection hole 121 and the fourth connection hole 2111 forms a simple hole-shaft connection structure, which facilitates the connection of the first electrical connector 120 and the busbar 211, thereby facilitating the assembly and production of the battery box 100 and the battery device 200, and increasing the production capacity of the battery box 100 and the battery device 200.

[0153] In some embodiments, the fourth connecting hole 2111 has a third internal thread, which, together with the first internal thread of the first connecting hole 121, engages with the first external thread of the first fixing member 130 to connect and electrically conduct the busbar 211 and the first electrical connector 120. Thus, the busbar 211 and the first electrical connector 120, connected through the first connecting hole 121, the fourth connecting hole 2111, and the first fixing member 130, form a stable, threaded, detachable connection structure. This threaded connection creates a mechanical fastening force, making the connection structure between the first electrical connector 120 and the busbar 211 compact and stable. This prevents the first electrical connector 120 from detaching from the busbar during long-term use of the battery device 200, reducing the probability of thermal safety accidents and enhancing the safety of the battery device 200.

[0154] In some embodiments, the busbar 211 has a first busbar extension 2112, the first busbar extension 2112 and the first electrical connector 120 are connected and electrically conductive through a first electrical connection portion; the first busbar extension 2112 extends along a first direction.

[0155] It should be noted that in this embodiment, the first direction extends perpendicularly to the bottom wall of the housing 110 to the mounting opening 112. That is, the first busbar extension 2112 faces the mounting opening 112 and is parallel to the first extension 124 of the first electrical connector 120. Thus, when the battery module 210 passes through the mounting opening 112 and enters the mounting cavity 111, it is only necessary to fasten the first busbar extension 2112 and the first extension 124 with the first fastener 130, which facilitates the assembly and production of the battery device 200 and increases the production capacity of the battery device 200.

[0156] In some embodiments, the busbar 211 has a second busbar extension 2113 connected to the side of the first busbar extension 2112 away from the first electrical connection portion, and the second busbar extension 2113 and the terminal of the battery module 210 are electrically connected.

[0157] Optionally, the extension direction of the second bus extension segment 2113 intersects with the extension direction of the first bus extension segment 2112. It should be noted that the intersection of the extension directions of the second bus extension segment 2113 and the first bus extension segment 2112 means that there is an angle between them. This angle can be a right angle, an obtuse angle, or an acute angle; this embodiment does not require it.

[0158] In some embodiments, the battery device 200 further includes a battery management system electrically connected to at least one of a temperature detection element, a torque detection element, and a deformation detection element of the battery box 100.

[0159] It should be noted that at least one of the temperature detection device, torque detection device, and deformation detection device can be electrically connected to the battery management system via a wiring harness.

[0160] In some embodiments, when the battery box 100 is provided with a connection terminal 150, the connection terminal 150 is electrically connected to at least one of the temperature detection element, torque detection element, and deformation detection element. In this way, the battery management system can be electrically connected to the connection terminal 150 on the battery box 100 to realize the transmission of detection signals from the temperature detection element, torque detection element, and deformation detection element.

[0161] Thirdly, embodiments of this application provide an electrical device, including the battery device 200 provided in the second aspect.

[0162] It should be noted that the electrical devices in the embodiments of this application include energy storage devices, aircraft, vehicles, electronic devices, etc., and no specific requirements are made for them in the embodiments of this application.

[0163] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0164] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0165] It should be readily understood that the terms “on,” “above,” and “on top of” in this application should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on top of something” but also “on top of something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0166] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90° or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0167] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A battery box, characterized in that, include: The housing (110) has a mounting cavity (111) and a mounting opening (112), the mounting opening (112) and the mounting cavity (111) are connected, and the mounting opening (112) is used for the battery module (210) to pass through so that the battery module (210) is installed in the mounting cavity (111); A first electrical connector (120) has a first electrical connection portion facing the mounting opening (112) and is used to connect and electrically conduct with the busbar (211) of the battery module (210).

2. The battery box according to claim 1, characterized in that, The first electrical connection includes a first connection hole (121) for the first fixing member (130) to pass through, so that the first electrical connection member (120) and the bus member (211) can be detachably connected; The first connecting hole (121) extends along the bottom wall of the housing (110) to the mounting opening (112).

3. The battery box according to claim 1, characterized in that, The enclosure (110) has a mounting groove (113) on its wall, and the first electrical connector (120) is disposed in the mounting groove (113).

4. The battery box according to claim 3, characterized in that, The box wall of the box body (110) has a protrusion (114) that forms the mounting groove (113).

5. The battery box according to claim 3, characterized in that, It also includes a protective element (140), which is disposed in the mounting groove (113) and surrounds a portion of the periphery of the first electrical connector (120).

6. The battery box according to claim 1, characterized in that, A portion of the first electrical connector (120) extends to the outside of the housing (110) to bring out the electrodes of the battery module (210).

7. The battery box according to claim 1, characterized in that, The first electrical connector (120) has a second electrical connection portion for leading out the electrodes of the battery module (210).

8. The battery box according to claim 7, characterized in that, It also includes a second electrical connector (160), which is disposed on the wall of the housing (110), and the second electrical connector (160) and the first electrical connector (120) are electrically connected through the second electrical connection.

9. The battery box according to claim 8, characterized in that, The box wall has a connection port (115), through which the second electrical connector (160) passes and is electrically connected to the first electrical connector (120) via the second electrical connection portion; the shape of the connection port (115) matches the shape of the end of the second electrical connector (160); The connection port (115) extends along the thickness direction of the box wall of the box body (110).

10. The battery box according to claim 8, characterized in that, The second electrical connection includes a second connection hole (123), which extends along the thickness direction of the box wall of the box body (110); the second electrical connector (160) is provided with a third connection hole; The battery box (100) includes a second fixing member (122), which passes through the second connecting hole (123) and the third connecting hole to connect the second electrical connector (160) to the first electrical connector (120).

11. The battery box according to claim 1, characterized in that, The first electrical connector (120) has a first extension (124) that extends along a first direction perpendicular to the bottom wall of the housing (110) to the mounting opening (112); The first electrical connection portion is disposed on the first extension section (124).

12. The battery box according to claim 11, characterized in that, The first electrical connector (120) also has a second extension (125) connected to the side of the first extension (124) opposite to the battery module (210); The extension direction of the second extension segment (125) intersects the extension direction of the first extension segment (124).

13. The battery box according to claim 12, characterized in that, The second extension (125) extends along the bottom wall of the housing (110) to the mounting opening (112).

14. The battery box according to any one of claims 1-13, characterized in that, A temperature detection element is provided on the first electrical connector (120), and the temperature detection element is used to detect the temperature of the first electrical connector (120).

15. The battery box according to claim 14, characterized in that, The first electrical connector (120) is provided with a third fixing member (126), and the temperature detection member is detachably connected to the first electrical connector (120) through the third fixing member (126).

16. The battery box according to claim 15, characterized in that, The third fastener (126) is connected to the first electrical connector (120) by a snap-fit ​​connection.

17. The battery box according to claim 15, characterized in that, The temperature sensing element is connected to the third fixing element (126) by a snap-fit ​​connection.

18. The battery box according to claim 14, characterized in that, The housing (110) is also provided with a connection terminal (150), which is electrically connected to the temperature detection element.

19. The battery box according to claim 2, characterized in that, It also includes a torque detection device, which is disposed on the first fixing member (130) and is used to detect the torque of the first fixing member (130); And / or, the first electrical connector (120) is provided with a deformation detection element, which is used to detect the deformation of the first electrical connector (120).

20. The battery box according to claim 10, characterized in that, It also includes a torque detection element, which is disposed on the second fixing member (122) and is used to detect the torque of the second fixing member (122); And / or, the first electrical connector (120) is provided with a deformation detection element, which is used to detect the deformation of the first electrical connector (120).

21. The battery box according to claim 19 or 20, characterized in that, The housing (110) is also provided with a connection terminal (150), which is electrically connected to at least one of the torque detection element and the deformation detection element.

22. A battery device, characterized in that, include: The battery box (100) as described in any one of claims 1-21; A battery module (210) is installed in the mounting cavity (111) of the battery box (100); the busbar (211) of the battery module (210) and the first electrical connector (120) of the battery box (100) are connected and electrically conductive through the first electrical connector.

23. The battery device according to claim 22, characterized in that, Includes a first fixing member (130), and the busbar (211) is provided with a fourth connecting hole (2111); The first fixing member (130) passes through the fourth connecting hole (2111) and the first connecting hole (121) of the first electrical connector (120) so that the busbar (211) and the first electrical connector (120) are connected and electrically conductive.

24. The battery device according to claim 22, characterized in that, The busbar (211) has a first busbar extension (2112), and the first busbar extension (2112) and the first electrical connector (120) are connected and electrically conductive through a first electrical connection portion; The first confluence extension (2112) extends along the first direction.

25. The battery device according to claim 24, characterized in that, The busbar (211) has a second busbar extension (2113), which is connected to the side of the first busbar extension (2112) away from the first electrical connection portion. The second busbar extension (2113) and the terminal of the battery module (210) are electrically connected.

26. The battery device according to claim 25, characterized in that, The extension direction of the second merging extension (2113) intersects the extension direction of the first merging extension (2112).

27. The battery device according to claim 22, characterized in that, It also includes a battery management system, which is electrically connected to at least one of the temperature detection device, torque detection device and deformation detection device of the battery box (100).

28. The battery device according to claim 22, characterized in that, It also includes a battery management system, which is electrically connected to the connection terminal (150) on the battery box (100).

29. An electrical appliance, characterized in that, Includes the battery device (200) according to any one of claims 22-28.

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