Box body, battery and electric device

Abstract

The invention is applicable to the technical field of batteries, and provides a box body, a battery and a power utilization device, the box body is provided with an accommodating cavity, and the accommodating cavity is used for accommodating a battery module; the box body is provided with a first side wall, the first side wall of the box body is provided with a first protruding part in a protruding mode in the direction away from the containing cavity, the box body is provided with a first cavity, the first cavity penetrates through the first protruding part and is partially located on the first side wall, the first protruding part is provided with a first opening communicated with the first cavity, and the first side wall is provided with a second opening communicated with the first cavity. And a first cover body covers the first opening. According to the box body provided by the invention, the first cavity is positioned on the outer side of the accommodating cavity, and more spaces are formed in the accommodating cavity and are used for accommodating the battery modules, so that the energy density of the battery applying the box body is increased.

Description

Box, battery and electrical device Technical Field

[0001] The present application relates to the field of battery technology, and more specifically, to a box, a battery, and an electrical device. Background Art

[0002] With the increasing popularity of portable devices and electric vehicles, users are demanding higher battery life. The greater the battery's energy content, the longer its battery life. A higher battery energy density means more energy can be stored within the same volume. Improving battery energy density can improve the battery life of a given volume. For applications like portable devices and electric vehicles, while demanding battery life is high, maintaining a relatively small battery size is crucial. Therefore, improving battery energy density has become a pressing technical challenge.

[0003] Summary of the Invention

[0004] The purpose of the embodiments of the present application is to provide a box, a battery and an electrical device, aiming to solve the technical problem in the prior art that the energy density is difficult to further increase when the internal space of the battery does not change much.

[0005] To achieve the above objectives, the technical solution adopted in this application is:

[0006] In a first aspect, a box is provided, which has a accommodating cavity for accommodating a battery module; the box has a first side wall, the first side wall is provided with a first convex portion protruding in a direction away from the accommodating cavity, the box has a first chamber, the first chamber is used to accommodate a distribution module electrically connected to the battery module, the first chamber passes through the first convex portion and is partially located on the first side wall, the first convex portion has a first opening communicating with the first chamber, the first side wall has a second opening communicating with the first chamber, and the first opening is covered with a first cover.

[0007] According to the above technical solution, the first side wall of the housing is provided with a first chamber, with a portion of the first chamber located within the first side wall and another portion located within the first protrusion, which is located outside the first side wall. This arrangement allows the power distribution module to be installed within the first chamber and placed within the first chamber through the first opening. The second opening allows the power distribution module located within the first chamber to be electrically connected to the battery module within the accommodating chamber. In this arrangement, since the power distribution module is removed from the accommodating chamber, more space within the accommodating chamber is freed up for accommodating the battery module, thereby increasing the energy density of the battery incorporating the housing. Since the first chamber is partially located within the first side wall, the space within the first side wall in the direction of its thickness is effectively utilized, resulting in a relatively small protrusion of the first protrusion from the first side wall. This improves the battery's energy density while maintaining minimal changes to the housing's outer dimensions.

[0008] In one possible design, the box body has a second side wall arranged opposite to the first side wall, and the second side wall is provided with a second convex portion protruding toward the side away from the first side wall. The box body has a second chamber, and the second chamber is used to accommodate a distribution module electrically connected to the battery module. The second chamber passes through the second convex portion and is partially located on the second side wall. The second convex portion has a third opening connected to the second chamber, and the second side wall has a fourth opening connected to the second chamber. The third opening is covered with a second cover.

[0009] According to the above technical solution, the second chamber can also be used to accommodate the power distribution module, that is, the electrical components in the power distribution module can be partially located in the first chamber and partially located in the second chamber, so that the volume of the first chamber can be relatively reduced, and the second chamber utilizes the internal space of the second side wall, thereby further improving the space utilization of the side wall of the box.

[0010] In a possible design, the first opening is provided on a side of the first protrusion facing away from the first side wall.

[0011] According to the above technical solution, there is a larger space for setting the first opening on the side of the first protrusion away from the first side wall, so that a larger opening can be opened on the first side wall as the first opening. The first opening is used for the power distribution module to enter the first chamber. The relatively large first opening facilitates the assembly operation of the power distribution module in the first chamber.

[0012] In a possible design, the first cover is detachably connected to the first protrusion.

[0013] In this technical solution, since the first cover body and the first protrusion are detachably connected, the distribution module in the first chamber can be inspected after the battery with the box body is put into use. The distribution module in the first chamber can be taken out for inspection by opening the first cover body, which is convenient to operate.

[0014] In a possible design, a first sealing structure is provided between the first cover and the first protrusion.

[0015] In this technical solution, the provision of the first sealing structure can improve the sealing performance of the first chamber.

[0016] In the second aspect, a battery is provided, comprising a battery module, a first power distribution module and a box provided by any of the above technical solutions, the battery module being installed in the accommodating cavity of the box, the first power distribution module being installed in the first cavity of the box, and the battery module being electrically connected to the first power distribution module.

[0017] Since the battery includes the above-mentioned box, it has at least all the beneficial effects of the above-mentioned box, which will not be described in detail here.

[0018] In one possible design, the first power distribution module includes a first box body, the first box body includes a first box body and a first box cover, the first box body and the first box cover are detachably connected, the first box body and the first box cover cooperate to form a first inner cavity, an electrical component group is provided in the first inner cavity, and a first electrical connection structure for electrically connecting the electrical component group to the battery module in the accommodating cavity.

[0019] According to the above technical solution, the electrical component group is installed in the first box body, so that the electrical component group is integrated into one body, which facilitates the installation of the first power distribution module into the first chamber. Since the first box body and the first box cover are detachably connected, the electrical component group can be taken out for maintenance.

[0020] In one possible design, the first electrical connection structure includes a first input busbar for electrically connecting to the battery module, the first input busbar is arranged opposite to the second opening, a first assembly port is provided on the first box cover, the first assembly port is arranged opposite to the first input busbar, a flip cover is provided at the first assembly port, and the flip cover is rotatably connected to the first box cover.

[0021] According to the above technical solution, the provision of the flip cover facilitates exposing the first assembly opening, so as to facilitate the electrical connection operation between the first input busbar and the battery module.

[0022] In one possible design, the first electrical connection structure also includes a first adapter structure, which includes a first adapter end, a second adapter end and a bent adapter body. The first adapter end and the second adapter end are connected through the bent adapter body. The first adapter end is used to connect the battery module, and the second adapter end is electrically connected to the first input bus bar.

[0023] In this technical solution, due to the provision of the first adapter structure, electrical connection between the battery module and the first input bus bar that are far apart can be facilitated.

[0024] In one possible design, the battery further includes a first connector mounted on a side of the first side wall away from the accommodating cavity. The first electrical connection structure further includes a first output busbar electrically connected to the first connector.

[0025] According to the above technical solution, the first electrical connection structure is electrically connected to the first connector through the first output busbar, thereby realizing electrical connection between the battery module and the first connector, so that the battery module can transmit electrical energy to external electrical devices through the first connector.

[0026] In a possible design, the first electrical connection structure further includes a second adapter structure, and the second adapter structure is electrically connected to the first output bus bar and the first connector respectively.

[0027] According to the above technical solution, the provision of the second adapter structure facilitates the electrical connection between the first output bus bar and the first connector.

[0028] In one possible design, the battery also includes a mounting seat, which is installed on a side of the first side wall away from the accommodating cavity, and the first output bus and the second adapter structure are connected to the mounting seat, the first output bus includes a first output end and a second output end, the second adapter structure includes a first adapter bus and a second adapter bus, the first adapter bus is electrically connected to the first output end, and the second adapter bus is electrically connected to the second output end, the mounting seat includes an insulating barrier, the first output end and the second output end are respectively located on both sides of the insulating barrier, and the first adapter bus and the second adapter bus are respectively located on both sides of the insulating barrier.

[0029] According to the above technical solution, the provision of the mounting seat facilitates the connection and fixation of the first output busbar and the second adapter structure, and the provision of the barrier body insulates the first output end from the second output end.

[0030] In a possible design, the electrical component group includes a plurality of electrical components, a housing is provided in the first inner cavity, and at least two electrical components are installed in the housing.

[0031] At least two electrical components are integrated into one body through the housing, thereby improving the assembly efficiency of the first power distribution module.

[0032] In a possible design, the first box body is provided with a plurality of second assembly openings, and each second assembly opening is respectively installed with an insulating cover.

[0033] According to the above technical solution, the electrical components in the first box body can be electrically connected to other electrical components without opening the first box body or the first box cover, thereby simplifying the assembly process.

[0034] In a possible design, a wiring groove is provided on a side of the first box cover facing away from the first inner cavity, and a buckle is provided in the wiring groove, and the buckle is used to fix the wiring harness in the wiring groove.

[0035] According to the above technical solution, at least part of the connecting wires in the first power distribution module can be locked in the wiring groove. On the one hand, it can protect the connecting wires to a certain extent. On the other hand, it can reduce the space occupied by the connecting wires in the first inner cavity, making the structure of the first power distribution module more compact, which is conducive to further reducing the volume of the first power distribution module.

[0036] In one possible design, the battery includes a second power distribution module, which includes a voltage-dividing fuse structure and a voltage-dividing relay. The voltage-dividing fuse structure and the voltage-dividing relay are electrically connected, and the voltage-dividing fuse structure and the voltage-dividing relay are electrically connected to the battery module respectively. The voltage-dividing fuse structure and the voltage-dividing relay are both installed in the second chamber of the box.

[0037] According to the above technical solution, the provision of the voltage-dividing fuse structure and the voltage-dividing relay can improve the safety of the battery. The voltage-dividing fuse structure and the voltage-dividing relay are installed in the second chamber, so they do not occupy the space of the financing chamber.

[0038] In one possible design, the second power distribution module includes a second box body, which is installed in the second chamber. The second box body includes a second box body and a second box cover. The second box body and the second box cover are detachably connected. The second box body and the second box cover cooperate to form a second inner cavity. The voltage dividing fuse structure and the voltage dividing relay are both installed in the second inner cavity.

[0039] According to the above technical solution, the detachable connection between the second box body and the second box cover facilitates the maintenance of the voltage-dividing insurance structure and the voltage-dividing relay.

[0040] In a possible design, one of the second box cover and the second box body is provided with a hook, and the other is provided with a slot, and the second box cover and the second box body are connected through the cooperation of the hook and the slot.

[0041] According to the above technical solution, the cooperation between the hook and the slot facilitates the disassembly and assembly of the second box cover and the second box body.

[0042] In one possible design, the first chamber and the second chamber are respectively located on two sides of the box in a first direction. There are four battery modules, each of which includes an odd number of battery cells arranged in sequence along a second direction, the second direction being perpendicular to the first direction. The battery cells are electrically connected in sequence, and the battery cells on one side are provided with external connection terminals, while the battery cells on the other side are provided with internal connection terminals.

[0043] The four battery modules are distributed in a 2×2 array in the accommodating cavity. The internal connection ends of two adjacent battery modules in the first direction are electrically connected, the external connection ends of two battery modules are electrically connected to the first distribution module, and the external connection ends of the other two battery modules are electrically connected to the second distribution module.

[0044] According to the above technical solution, the external connection terminals of the two battery modules are located in the middle of the accommodating cavity in the second direction, thereby facilitating electrical connection of the external connection terminals with the corresponding first power distribution module or second power distribution module.

[0045] In a third aspect, an electrical device is provided, which includes a battery provided by any of the above technical solutions, and the battery is used to provide electrical energy.

[0046] Since the electrical device includes the above-mentioned battery, it has at least all the beneficial effects of the above-mentioned battery, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0048] FIG1 is a schematic structural diagram of a box according to an embodiment of the present application from one perspective;

[0049] FIG2 is a schematic structural diagram of a box body provided by an embodiment of the present application from another perspective;

[0050] FIG3 is a schematic structural diagram of a battery provided by one embodiment of the present application;

[0051] FIG4 is an exploded schematic diagram of battery parts provided by one embodiment of the present application;

[0052] FIG5 is a partial enlarged schematic diagram of point A in FIG4 ;

[0053] FIG6 is a schematic structural diagram of a first power distribution module provided by an embodiment of the present application;

[0054] FIG7 is an exploded schematic diagram of parts of a first power distribution module provided by one embodiment of the present application;

[0055] FIG8 is a schematic structural diagram of a first box body provided by an embodiment of the present application;

[0056] FIG9 is a schematic structural diagram of a first box cover provided by an embodiment of the present application;

[0057] FIG10 is a partial structural diagram of a first electrical connection structure provided by an embodiment of the present application;

[0058] FIG11 is a partial structural diagram of a first power distribution module provided by an embodiment of the present application;

[0059] FIG12 is a partial enlarged schematic diagram of point B in FIG4;

[0060] FIG13 is a schematic structural diagram of a first switching structure provided by an embodiment of the present application;

[0061] FIG14 is a schematic diagram of the relative positions of a partial structure of a first power distribution module and a first connector provided in one embodiment of the present application;

[0062] FIG15 is an exploded view of a partial structure of a first power distribution module and some parts of a first connector provided by one embodiment of the present application;

[0063] FIG16 is an exploded schematic diagram of some parts of an electrical component assembly provided by one embodiment of the present application;

[0064] FIG17 is a schematic structural diagram of a second power distribution module provided by an embodiment of the present application;

[0065] FIG18 is an exploded schematic diagram of parts of a second power distribution module provided by one embodiment of the present application;

[0066] FIG19 is a schematic structural diagram of a second box body provided by an embodiment of the present application;

[0067] FIG20 is a schematic structural diagram of a second box cover provided in one embodiment of the present application;

[0068] FIG21 is a schematic structural diagram of a battery module provided in one embodiment of the present application;

[0069] FIG22 is a schematic diagram of the relative positions of multiple battery modules provided by one embodiment of the present application;

[0070] FIG23 is a circuit connection diagram of a battery provided in one embodiment of the present application;

[0071] FIG24 is a schematic structural diagram of an electrical device provided in one embodiment of the present application.

[0072] The reference numerals used in the above drawings are as follows:

[0073] 1. Electrical devices;

[0074] 10. Battery; 11. Battery module; 111. External connection terminal; 112. Internal connection terminal; 20. Control mechanism; 30. Drive mechanism;

[0075] 100, top cover;

[0076] 200, housing; 201, bolt; 210, first sidewall; 211, second opening; 220, first protrusion; 221, first opening; 222, first chamber; 2221, first stud; 2222, second stud; 230, first cover; 240, first sealing structure; 250, second sidewall; 251, fourth opening; 260, second protrusion; 261, third opening; 262, second chamber; 270, second cover; 280, second sealing structure; 290, accommodating chamber;

[0077] 300, first power distribution module; 310, first box body; 311, first box body; 3111, second assembly port; 3112, insulation cover; 3113, first clamping block; 312, first box cover; 3121, first assembly port; 3122, flip cover; 3123, wiring trough; 3124, buckle; 3125, wiring harness; 3126, first clamping ring; 3127, first bayonet; 313, first inner cavity; 314, connecting ear plate; 321, pre-charge relay; 322, pre-charge resistor; 323, main positive relay; 324, main negative relay; 325, battery management module; 326, circuit board; 327, housing; 3271, first Housing; 3272, second housing; 328, baffle; 330, first electrical connection structure; 331, first input busbar; 332, first adapter structure; 3321, first adapter terminal; 3322, second adapter terminal; 3323, bent adapter body; 333, second adapter structure; 3331, first adapter busbar; 3332, second adapter busbar; 334, first output busbar; 3341, first output terminal; 3342, second output terminal; 340, mounting base; 341, barrier body; 350, second connector; 360, first connector; 361, positive electrode connection terminal; 362, negative electrode connection terminal; 370, detection device;

[0078] 400, second power distribution module; 410, second box body; 411, second box body; 4111, slot; 412, second box cover; 4121, hook; 413, second inner cavity; 420, second electrical connection structure; 430, voltage-dividing insurance structure; 440, voltage-dividing relay. DETAILED DESCRIPTION

[0079] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0080] In the description of the embodiments of the present application, the term "plurality" refers to more than two (including two).

[0081] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0082] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the structure or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on this application.

[0083] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0084] In the drawings of this application, the leads with solid arrows all point to the device itself, and the leads with dots point to an area.

[0085] With the popularity of portable devices and electric vehicles, users have higher and higher requirements for battery life. The greater the energy of the battery, the longer the battery life. The higher the energy density of the battery means that more energy can be stored in the same volume. Increasing the battery energy density can improve the battery life of the same volume. In the related art, the battery includes a box and a battery module. A chamber is provided in the box. The battery module is accommodated in the chamber. The chamber also accommodates electrical components such as a distribution module. The electrical components and the battery module are electrically connected through conductive structures such as copper bars or wires. As can be seen from the above, the electrical components and conductive structures in the chamber occupy part of the space, so that the space available for accommodating the battery module is relatively small.

[0086] Based on the above considerations, and to address the aforementioned issues to a certain extent, this embodiment provides a housing for a battery. The housing comprises a cavity for accommodating a battery module. The sidewall of the housing comprises a protrusion extending away from the cavity. The protrusion increases the thickness of the sidewall. A high-voltage cavity is defined in the area of ​​the sidewall where the protrusion is located. The high-voltage cavity is used to accommodate a power distribution module. The high-voltage cavity is partially located within the protrusion and partially within the sidewall. In other words, the original thickness of the sidewall is utilized to form a portion of the high-voltage cavity for accommodating the power distribution module. This arrangement, on the one hand, allows the power distribution module to be removed from the cavity, thereby increasing the space within the cavity for accommodating the battery module. Furthermore, since the internal space of the sidewall is utilized to accommodate the power distribution module, the outer dimensions of the housing remain relatively unchanged. This means that the protrusion is relatively small, yet still accommodates the power distribution module. In summary, when the outer contour dimensions of the box body change relatively little, the box body can accommodate more or larger battery modules, thereby improving the energy density of the battery using the box body.

[0087] The box, battery and electrical device provided in the embodiments of the present application are explained in detail below.

[0088] The box provided in the embodiment of the present application is applied to a battery, and the battery is applied to an electrical device.

[0089] Please refer to Figures 1 to 4. The box body 200 provided in the embodiment of the present application has a accommodating cavity 290, which is used to accommodate the battery module 11; the box body 200 has a first side wall 210, and the first side wall 210 of the box body 200 is provided with a first protrusion 220 protruding in a direction away from the accommodating cavity 290. The box body 200 has a first chamber 222, which is used to accommodate a distribution module electrically connected to the battery module 11. The first chamber 222 passes through the first protrusion 220 and is partially located on the first side wall 210. The first protrusion 220 has a first opening 221 communicating with the first chamber 222, and the first side wall 210 has a second opening 211 communicating with the first chamber 222. The first opening 221 is covered with a first cover 230.

[0090] In the embodiment of the present application, the box body 200 has a first direction, a second direction, and a third direction. For example, when the box body 200 is substantially square, it has two side panels on both sides of the first direction, two side panels on both sides of the second direction, and one side panel in the third direction. The five side panels enclose a receiving cavity 290 of the box body 200, and the opening of the receiving cavity 290 faces one side of the third direction. In the drawings of the embodiment of the present application, the first direction is shown as the X direction, the second direction is shown as the Y direction, and the third direction is shown as the Z direction. The X direction, the Y direction, and the Z direction are not directions pointing to a single direction or a single position. The directions parallel to the X direction are all referred to as the X direction, the directions parallel to the Y direction are all referred to as the Y direction, and the directions parallel to the Z direction are all referred to as the Z direction.

[0091] The box body 200 has a certain storage space. The box body 200 has a frame and a bottom plate. The bottom plate is located on one side of the frame in the third direction (Z direction), so that the frame and the bottom plate together enclose a storage cavity 290. The frame is connected to the bottom plate. For example, the frame can be a rectangular frame, which includes two side walls spaced apart along the first direction (X direction) and two side walls spaced apart along the second direction (Y direction). The four side walls are connected end to end to form the frame, and the frame is connected to the bottom plate on one side of the third direction (Z direction). The frame and the bottom plate can be an integral structure. The first side wall 210 can be a side wall in any direction of the frame. For example, in Figure 2, the frame is a rectangular frame, and the length of the side wall set along the first direction (X direction) is less than the length of the side wall set along the second direction (Y direction). The length of the side wall set along the first direction (X direction) is the size of the side wall in the first direction (X direction). The length of the side wall set along the second direction (Y direction) is the size of the side wall in the second direction (Y direction). The first side wall 210 is one of the two side walls of the frame spaced apart in the first direction (X direction). In this manner, the first protrusion 220 of the first side wall 210 has relatively little effect on the overall structural shape of the box body 200 .

[0092] As shown in Figures 1 and 2, a first protrusion 220 is provided on the first sidewall 210, protruding in a direction away from the accommodating cavity 290. In the first sidewall 210, one side is used to form an inner wall of the accommodating cavity 290, and the other side, which is opposite to the first sidewall, is provided with the first protrusion 220 protruding outward. For example, the first sidewall 210 is one of the two sidewalls of the frame in the first direction (X direction). Then, one side of the first sidewall 210 is opposite to the other sidewall in the first direction (X direction), and the other side is provided with the first protrusion 220 extending in a direction away from the other sidewall. For example, if the first direction (X direction) is the left-right direction, and the first sidewall 210 is the sidewall on the left side of the sidewalls of the frame arranged in the left-right direction, then the accommodating cavity 290 is located on the right side of the first sidewall 210, and the left side of the first sidewall 210 is provided with the first protrusion 220 protruding to the left. The protruding arrangement means that, in the first direction (X direction), the leftmost edge of the first protrusion 220 is further to the left than the leftmost edge of the area of ​​the first sidewall 210 where the first protrusion 220 is not provided. The first protrusion 220 can be provided separately from the first sidewall 210, and the first protrusion 220 and the first sidewall 210 can be fixedly connected, or the first protrusion 220 and the first sidewall 210 can be an integrally formed structure.

[0093] Referring to Figures 4 and 5 , the housing 200 is provided with a first chamber 222, which is used to accommodate a power distribution module. For ease of description, the power distribution module installed in the first chamber 222 is referred to as a first power distribution module 300. The first power distribution module 300 is used to distribute the electrical energy of the battery module 11 and to protect the circuit. In the first direction (X direction), the size of the first chamber 222 is larger than the size of the first protrusion 220, that is, part of the first chamber 222 is located inside the first sidewall 210. Part of the first chamber 222 is located inside the first protrusion 220, and another part is located inside the first sidewall 210. The area inside the first protrusion 220 is connected to the area inside the first sidewall 210. The first chamber 222 extends through the first protrusion 220 and at least partially through the first sidewall 210. The opening of the first chamber 222 on one side of the first protrusion 220 is the first opening 221, and the opening of the first chamber 222 on one side of the first sidewall 210 is the second opening 211. The first opening 221 connects the first chamber 222 to the outside world, facilitating installation of the first power distribution module 300 within the first chamber 222. The second opening 211 connects to the accommodating cavity 290, facilitating electrical connection between the first power distribution module 300 and the battery module 11.

[0094] By opening the first cover 230, the first power distribution module 300 can be installed in the first chamber 222. After the first power distribution module 300 is installed, the first cover 230 is closed on the first opening 221 to block the connection between the first chamber 222 and the outside world. This can protect the first power distribution module 300 from collisions with external objects to a certain extent, and can also prevent dust, liquids and other substances from entering the first chamber 222 to a certain extent.

[0095] In the box body 200 provided in the embodiment of the present application, since part of the first chamber 222 is located on the first protrusion 220 and part is located on the first side wall 210, and the first protrusion 220 is located on the side of the first side wall 210 away from the accommodating chamber 290, the first chamber 222 is used to install the first power distribution module 300, so the first power distribution module 300 is not installed in the accommodating chamber 290, thereby releasing the space in the accommodating chamber 290 originally used to install the first power distribution module 300 and can be used to accommodate the battery module 11, increasing the space of the accommodating chamber 290 for accommodating the battery module 11, thereby improving the energy density of the battery 10 to which the box body 200 is applied.

[0096] Because the first chamber 222 is partially located within the first sidewall 210, the first power distribution module 300 is also partially located within the first sidewall 210. This utilizes the internal space of the first sidewall 210, improves the space utilization of the housing 200, and makes the housing 200 more compact. Because the first power distribution module 300 is partially located within the first sidewall 210, the internal space occupied by the first power distribution module 300 within the first protrusion 220 is reduced, thereby reducing the size of the first protrusion 220. This also results in a relatively smaller change in the outer contour of the housing 200.

[0097] In addition, when the case 200 is applied to the battery 10, the battery 10 may further include a top cover 100, which covers the opening of the accommodating chamber 290 in the case 200, thereby sealing the accommodating chamber 290. Since the first chamber 222 is connected to the first opening 221, the first opening 221 is used to allow the first distribution module 300 to enter the first chamber 222, and therefore, the first distribution module 300 can be assembled without opening the top cover 100. There is no need to reserve the required space for assembly of the first distribution module 300 in the accommodating chamber 290, further freeing up space in the accommodating chamber 290. The assembly space reserved in the related art can be freed up to accommodate the battery module 11, further improving the energy density of the battery 10 to which the case 200 is applied.

[0098] In some embodiments, as shown in Figures 1 and 4, the box body 200 has a second side wall 250 arranged opposite to the first side wall 210, and the second side wall 250 is provided with a second protrusion 260 protruding toward the side away from the first side wall 210. The box body 200 has a second chamber 262, and the second chamber 262 is used to accommodate a distribution module electrically connected to the battery module 11. The second chamber 262 passes through the second protrusion 260 and is partially located on the second side wall 250. The second protrusion 260 has a third opening 261 connected to the second chamber 262. The second side wall 250 has a fourth opening 251 connected to the second chamber 262, and the third opening 261 is covered with a second cover 270.

[0099] As shown in Figures 2 and 3, a second protrusion 260 is provided on the second sidewall 250, protruding away from the first sidewall 210. One side of the second sidewall 250 forms an inner wall of the accommodating cavity 290, while the second protrusion 260 is provided on the other side, which is opposite to the first sidewall 210. For example, the frame includes two sidewalls spaced apart along a first direction (X direction), one of which is the first sidewall 210 and the other is the second sidewall 250. One side of the second sidewall 250 is opposite the first sidewall 210, and the other side is provided with the second protrusion 260 extending away from the first sidewall 210. For example, if the first direction (X direction) is the left-right direction, and the second sidewall 250 is the right sidewall of the sidewalls spaced apart in the left-right direction of the frame, then the accommodating cavity 290 is located on the left side of the second sidewall 250, and the second protrusion 260 is provided on the right side of the second sidewall 250. The protruding arrangement means that, in the first direction (X direction), the rightmost edge of the second protrusion 260 is further to the right than the rightmost edge of the area of ​​the second sidewall 250 where the second protrusion 260 is not provided. The second protrusion 260 can be provided separately from the second sidewall 250, and the second protrusion 260 and the second sidewall 250 can be fixedly connected, or the second protrusion 260 and the second sidewall 250 can be an integrally formed structure.

[0100] As shown in Figures 2 to 4, the housing 200 is provided with a second chamber 262 for accommodating a second power distribution module 400. For ease of description, the power distribution module accommodated in the second chamber 262 is referred to as the second power distribution module 400. In the first direction (X direction), the dimensions of the second chamber 262 are larger than those of the second protrusion 260. In other words, a portion of the second chamber 262 is located within the second sidewall 250. The second chamber 262 is partially located within the second protrusion 260, while another portion is located within the second sidewall 250. The area within the second protrusion 260 communicates with the area within the second sidewall 250. The second chamber 262 extends through the second protrusion 260 and at least partially through the second sidewall 250. The opening of the second chamber 262 on the side of the second protrusion 260 is the third opening 261, and the opening of the second chamber 262 on the side of the second sidewall 250 is the fourth opening 251. The third opening 261 allows the second chamber 262 to communicate with the outside, so as to facilitate installation of the second power distribution module 400 into the second chamber 262. The fourth opening 251 communicates with the accommodating cavity 290, so as to facilitate electrical connection between the second power distribution module 400 and the battery module 11.

[0101] By opening the second cover 270, the second power distribution module 400 can be installed in the second chamber 262. After the second power distribution module 400 is installed, the second cover 270 is closed on the third opening 261 to block the connection between the second chamber 262 and the outside world. This can protect the second power distribution module 400 from collisions with external objects to a certain extent, and can also prevent dust, liquids and other substances from entering the second chamber 262 to a certain extent.

[0102] By means of the above arrangement, the second power distribution module 400 is moved out of the accommodating cavity 290 and into the second chamber 262 , thereby further increasing the space in the accommodating cavity 290 for placing the battery module 11 and further improving the energy density of the battery 10 using the box 200 .

[0103] Because the second chamber 262 is partially located within the second sidewall 250, the second power distribution module 400 is also partially located within the second sidewall 250. This utilizes the internal space of the second sidewall 250, further improving the space utilization of the housing 200 and making the housing 200 more compact. Since the second power distribution module 400 is partially located within the second sidewall 250, the internal space occupied by the second power distribution module 400 is reduced, thereby reducing the size of the second protrusion 260. This also results in a relatively smaller change in the external structural shape of the housing 200.

[0104] Furthermore, because the second chamber 262 is connected to the third opening 261, which allows the second power distribution module 400 to enter the second chamber 262, the second power distribution module 400 can be assembled without opening the top cover 100. This eliminates the need to reserve assembly space for the second power distribution module 400 within the accommodating chamber 290, further freeing up space within the accommodating chamber 290. The assembly space previously reserved in the related art can be freed up to accommodate the battery module 11, further improving the energy density of the battery 10 incorporating the housing 200.

[0105] It is worth noting that the multiple electrical components electrically connected to the battery module 11 are divided into two groups, one of which is called the first power distribution module 300 and the other is called the second power distribution module 400. Because the first protrusion 220 and the second protrusion 260 are respectively disposed on opposite sides of the housing 200, the first power distribution module 300 and the second power distribution module 400 can be respectively installed on the two sides of the spaced-apart accommodating cavity 290. Such arrangement allows, during the routing process, the current can pass through one end of the first distribution module 300, the battery module 11 on one side of the accommodating cavity 290, one end of the second distribution module 400, the other end of the second distribution module 400, the battery module 11 on the other side of the accommodating cavity 290, and then return to the other end of the first distribution module 300, thereby forming a current loop. This can effectively reduce the winding length, reduce the routing difficulty, and reduce the use of the conductor structure used to connect the battery module 11 and the distribution module, thereby reducing the space occupied by the conductor structure in the accommodating cavity 290, and further improving the energy density of the battery 10 using the box 200.

[0106] The first opening 221 can be provided on one side of the first protrusion 220 along the third direction (Z direction), or on the side of the first protrusion 220 away from the first sidewall 210. In some embodiments, as shown in FIG5 , the first opening 221 is provided on the side of the first protrusion 220 away from the first sidewall 210 along the first direction (X direction). In other words, the first opening 221 is provided on the side of the first protrusion 220 away from the accommodating cavity 290 along the first direction (X direction). The side of the first protrusion 220 away from the accommodating cavity 290 provides more operating space, making it easier to connect the first power distribution module 300 to the housing 200. In addition, there is no interference between the side of the first protrusion 220 away from the accommodating cavity 290 and the top cover 100, so whether or not the top cover 100 is installed will not affect the assembly operation of the first power distribution module 300.

[0107] There is a large space for setting the first opening 221 on the side of the first protrusion 220 facing away from the first side wall 210, so that a larger opening can be opened on the first side wall 210 as the first opening 221. The first opening 221 is used for allowing the first distribution module 300 to enter the first cavity 222. The relatively large first opening 221 facilitates the assembly operation of the first distribution module 300 in the first cavity 222.

[0108] In some examples, the first cover 230 is detachably connected to the first protrusion 220 .

[0109] The detachable connection between the first cover 230 and the first protrusion 220 can be achieved by a snap-fit ​​connection, a screw connection, or the like. For example, as shown in Figures 4 and 5 , the first cover 230 and the first protrusion 220 are connected by bolts. The first protrusion 220 is provided with a second stud 2222, which is provided with a threaded hole. The first cover 230 is provided with a through hole. The bolt 201 passes through the through hole of the first cover 230 and then screws into the threaded hole of the second stud 2222, thereby connecting the first cover 230 to the first protrusion 220. There are multiple second studs 2222, and the number of second studs 2222, the through hole in the first cover 230, and the number of bolts 201 used to connect the first cover 230 and the first protrusion 220 is the same and corresponds to each other.

[0110] For example, a second stud 2222 is provided on the inner wall of the first chamber 222 at one end near the first opening 221, and a first stud 2221 is provided on the inner wall of the first chamber 222 at one end near the second opening 211. In the first direction (X direction), the first stud 2221 and the second stud 2222 are not opposite each other, or in the second direction (Y direction), the first stud 2221 and the second stud 2222 are staggered. The first stud 2221 and the second stud 2222 are respectively connected to the inner wall of the first chamber 222, and the first stud 2221 and the second stud 2222 are respectively protruded toward the inner side of the first chamber 222. In this arrangement, there is a certain gap between adjacent first studs 2221 and a certain gap between adjacent second studs 2222. The above gaps can be used to accommodate the protruding portion structure on the outer surface of the first power distribution module 300, thereby making more efficient use of the space within the first chamber 222. The first stud 2221 and the second stud 2222 may be an integral structure with the first protrusion 220 .

[0111] In the above embodiment, since the first cover 230 is detachably connected to the first protrusion 220, the first power distribution module 300 can be inspected after the battery 10 with the box 200 is put into use. The first power distribution module 300 can be taken out for inspection by opening the first cover 230. After the inspection is completed, the first power distribution module 300 is placed in the first chamber 222. After the first power distribution module 300 is connected to the box 200, the first cover 230 is closed to the first opening 221, and the first cover 230 is fixed to the first protrusion 220 by the bolts 201. The entire inspection process is completed, and the disassembly and assembly of the first distribution module 300 is convenient.

[0112] In some examples, a first sealing structure 240 is disposed between the first cover 230 and the first protrusion 220 .

[0113] The first sealing structure 240 is used to seal the connection between the first cover 230 and the first protrusion 220, thereby improving the sealing performance of the first chamber 222. The first sealing structure 240 can be a gasket layer made of a flexible material, such as a layered structure made of rubber or foam. The first sealing structure 240 can be applied to the entire surface of the first cover 230 facing the first chamber 222, or to the surface area of ​​the first cover 230 facing the first protrusion 220. Alternatively, the first sealing structure 240 can be a sealing ring made of a material with a certain degree of elasticity, such as rubber or silicone. The first sealing structure 240 is disposed on the side of the first cover 230 facing the first protrusion 220, and the through-holes in the first cover 230 are all located outside the first sealing structure 240. In other words, the first sealing structure 240 is located inside the annular area formed by the multiple through-holes. The first sealing structure 240 contacts the first protrusion 220 and the first cover 230 respectively. For example, as shown in Figures 4 and 5, a sealing groove can be provided on the side of the first cover body 230 facing the first protrusion 220, a partial area of ​​the first sealing structure 240 is embedded in the sealing groove, and a partial area is located outside the sealing groove, and the area of ​​the first sealing structure 240 located outside the sealing groove is in contact with the first protrusion 220.

[0114] The third opening 261 can be provided on one side of the second protrusion 260 along the third direction (Z direction), or on the side of the second protrusion 260 away from the second sidewall 250. In some embodiments, as shown in FIG3 , the third opening 261 is provided on the side of the second protrusion 260 away from the second sidewall 250 along the first direction (X direction). In other words, the third opening 261 is provided on the side of the second protrusion 260 away from the accommodating cavity 290 along the first direction (X direction). The side of the second protrusion 260 away from the accommodating cavity 290 provides more operating space, making it easier to connect the second power distribution module 400 to the housing 200. In addition, there is no interference between the side of the second protrusion 260 away from the accommodating cavity 290 and the top cover 100, so whether or not the top cover 100 is installed will not affect the assembly operation of the second power distribution module 400.

[0115] There is a large space for setting the third opening 261 on the side of the second protrusion 260 facing away from the second side wall 250, so that a larger opening can be opened on the second side wall 250 as the third opening 261. The third opening 261 is used for allowing the second distribution module 400 to enter the second chamber 262. The relatively large third opening 261 facilitates the assembly operation of the second distribution module 400 in the second chamber 262.

[0116] In some examples, as shown in FIG. 4 , the second cover 270 is detachably connected to the second protrusion 260 , and a second sealing structure 280 is disposed between the second cover 270 and the second protrusion 260 .

[0117] The detachable connection between the second cover 270 and the second protrusion 260 can be a snap connection, a screw connection, etc. Exemplarily, the second cover 270 and the second protrusion 260 are connected by bolts. The second protrusion 260 is provided with a third stud, and the third stud is provided with a threaded hole. The second cover 270 is provided with a through hole. The bolt 201 passes through the through hole of the second cover 270 and is screwed into the threaded hole of the third stud, thereby connecting the second cover 270 to the second protrusion 260. There are multiple third studs, and the number of third studs, the through hole on the second cover 270, and the bolts 201 used to connect the second cover 270 and the second protrusion 260 are the same and are provided in a one-to-one correspondence.

[0118] Exemplarily, a third stud is provided at one end of the inner wall of the second chamber 262 close to the third opening 261, and a protrusion is provided at one end of the inner wall of the second chamber 262 close to the fourth opening 251. In the first direction (X direction), the protrusion and the third stud are not opposite to each other, or in other words, in the second direction (Y direction), the protrusion and the third stud are staggered. The protrusion and the third stud are respectively connected to the inner wall of the second chamber 262, and the protrusion and the third stud are respectively protruded toward the inner side of the second chamber 262. In this arrangement, there is a certain gap between adjacent protrusions, and there is a certain gap between adjacent third studs. The above gaps can be used to accommodate the protruding portion structure on the outer surface of the second distribution module 400, so that the space in the second chamber 262 can be more effectively utilized. The protrusion and the third stud can be an integral structure with the second protrusion 260.

[0119] The second sealing structure 280 is used to seal the connection between the second cover 270 and the second protrusion 260, thereby improving the sealing performance of the second chamber 262. The second sealing structure 280 can be a gasket layer made of a flexible material, such as a layered structure made of rubber or foam. The second sealing structure 280 can be applied to the entire surface of the second cover 270 facing the second chamber 262, or to the surface area of ​​the second cover 270 facing the second protrusion 260. Alternatively, the second sealing structure 280 can be a sealing ring made of a material with a certain degree of elasticity, such as rubber or silicone. The second sealing structure 280 is disposed on the side of the second cover 270 facing the second protrusion 260, and the through-holes in the second cover 270 are all located outside the second sealing structure 280. In other words, the second sealing structure 280 is located inside the annular area formed by the multiple through-holes. The second sealing structure 280 contacts the second protrusion 260 and the second cover 270 respectively. For example, a sealing groove can be provided on the side of the second cover body 270 facing the second protrusion 260, a partial area of ​​the second sealing structure 280 is embedded in the sealing groove, and a partial area is located outside the sealing groove, and the area of ​​the second sealing structure 280 located outside the sealing groove contacts the second protrusion 260.

[0120] In the above embodiment, since the second cover 270 is detachably connected to the second protrusion 260, the second power distribution module 400 can be inspected after the battery 10 with the case 200 is put into use. The second power distribution module 400 can be removed for inspection by opening the second cover 270. After the inspection is completed, the second power distribution module 400 is placed in the second chamber 262. After the second power distribution module 400 is connected to the case 200, the second cover 270 is closed over the third opening 261 and fixed to the second protrusion 260 by bolts 201. This completes the entire inspection process, and the second power distribution module 400 is easy to install and remove. The provision of the second sealing structure 280 can improve the sealing performance of the second chamber 262.

[0121] As shown in FIG4 , an embodiment of the present application provides a battery, wherein the battery 10 includes a housing 200, a battery module 11, and a first power distribution module 300. The battery module 11 is installed in the housing 200. The battery module 11 is installed in the accommodating cavity of the housing 200, and the first power distribution module 300 is installed in the first chamber 222 of the housing 200.

[0122] In some embodiments, the box 200 can be used as part of the chassis structure of the vehicle. For example, part of the box 200 can become at least a part of the floor of the vehicle, or part of the box 200 can become at least a part of the crossbeam and longitudinal beam of the vehicle.

[0123] In some embodiments, the battery 10 may be an energy storage device, including an energy storage container, an energy storage cabinet, and the like.

[0124] The battery 10 includes one or more battery modules 11. The battery module 11 includes multiple battery cells, which are arranged and fixed to form a battery module 11. In a battery module 11, multiple battery cells are connected in series, in parallel, or in mixed connection through a busbar.

[0125] In the embodiments of the present application, the battery cells may be secondary batteries, which are batteries that can be recharged to activate the active material after discharge and continue to be used. The battery cells may be lithium-ion batteries, sodium-ion batteries, sodium-potassium-ion batteries, lithium metal batteries, sodium metal batteries, potassium-sulfur batteries, magnesium-ion batteries, nickel-metal hydride batteries, nickel-metal hydride batteries, lead-acid batteries, etc., and the embodiments of the present application are not limited thereto.

[0126] As an example, the battery cells may be cylindrical, prismatic, soft-pack or other shaped battery cells. Prismatic battery cells include square-shell, blade-shaped, and polygonal batteries. Polygonal batteries may be, for example, hexagonal batteries.

[0127] The battery may further include a top cover 100 , which covers the opening of the accommodating cavity 290 in the box body 200 , thereby sealing the accommodating cavity 290 .

[0128] Referring to Figures 4 to 6, the first power distribution module 300 can be connected to the inner wall of the first chamber 222 to connect the first power distribution module 300 to the housing 200, thereby reducing relative shaking between the first power distribution module 300 and the housing 200. The first power distribution module 300 and the inner wall of the first chamber 222 can be connected by bonding, snapping, screwing, etc. For example, a first stud 2221 is provided in the first chamber 222, and the first stud 2221 has a threaded hole. The first power distribution module 300 has a connecting ear plate 314, and the connecting ear plate 314 is provided with a through hole. The through hole and the threaded hole are aligned, and the bolt 201 is passed through the through hole and screwed into the threaded hole, thereby fixing the first power distribution module 300 to the first stud 2221, that is, connecting the first power distribution module 300 to the housing 200. The first power distribution module 300 is connected to the box body 200 by bolts 201 , so that the first power distribution module 300 can be separated from the box body 200 after the bolts 201 are removed, so as to facilitate maintenance of the first power distribution module 300 .

[0129] The first power distribution module 300 may include an electrical component group consisting of multiple electrical components, including relays, resistors, circuit boards, etc., and the multiple electrical components may be installed separately in the first chamber 222. In some embodiments, as shown in Figures 6 to 9, the first power distribution module 300 includes a first box body 310, and the first box body 310 includes a first box body 311 and a first box cover 312. The first box body 311 and the first box cover 312 are detachably connected. The first box body 311 and the first box cover 312 cooperate to form a first inner cavity 313. The first inner cavity 313 is provided with an electrical component group and a first electrical connection structure 330 for electrically connecting the electrical component group to the battery module 11 in the accommodating cavity 290.

[0130] As shown in Figure 7, the first box body 311 is used to form a accommodating space for accommodating an electrical component group, which includes multiple electrical components. The first box cover 312 covers the opening of the first box body 311, thereby forming a relatively sealed first inner cavity 313 together with the first box body 311, which plays a protective role for the electrical component group located in the first inner cavity 313.

[0131] The first electrical connection structure 330 is used to electrically connect the battery module 11 and one or more electrical components in the electrical component group. The first electrical connection structure 330 is a conductor, for example, the first electrical connection structure 330 may include a copper busbar.

[0132] Since the first power distribution module 300 includes a first housing 310, the electrical component group is installed within the first housing 310, and the multiple electrical components in the electrical component group are respectively installed in the first inner cavity 313 of the first housing 310. During assembly of the first power distribution module 300, it is sufficient to simply install the first housing 310 into the first cavity 222. During maintenance of the first power distribution module 300, the multiple electrical components can be removed by disassembling and removing the first housing 310, thereby improving assembly and disassembly efficiency during maintenance.

[0133] By installing the electrical component assembly in the first box body 310 in the above-described arrangement, the electrical component assembly is integrated into one unit, facilitating removal and installation of the first power distribution module 300 within the first chamber 222. Since the first box body 311 and the first box cover 312 are detachably connected, the electrical component assembly can be removed for maintenance.

[0134] The first box body 311 and the first box cover 312 can be connected by means of a clamping connection, a screw connection, etc. Exemplarily, as shown in Figures 8 and 9, the first box body 311 is provided with a plurality of first clamping blocks 3113, and the first box cover 312 is provided with a first snap ring 3126, and the first snap ring 3126 has a first bayonet hole 3127. When the first box cover 312 is closed onto the first box body 311, the first clamping block 3113 extends into the first bayonet hole 3127, thereby making the first box cover 312 connected to the first box body 311 by the cooperation of the first clamping block 3113 and the first bayonet hole 3127. The clamping connection mode can improve the disassembly and assembly efficiency between the first box cover 312 and the first box body 311.

[0135] In some embodiments, as shown in Figures 9 to 11, the first electrical connection structure 330 includes a first input bus 331 for electrically connecting to the battery module 11, the first input bus 331 is arranged opposite to the second opening 211, and a first assembly port 3121 is provided on the first box cover 312, the first assembly port 3121 is arranged opposite to the first input bus 331, and a flip cover 3122 is provided at the first assembly port 3121, and the flip cover 3122 is rotatably connected to the first box cover 312.

[0136] The flip cover 3122 is rotatably connected to the first box cover 312. The flip cover 3122 can be rotated relative to the first box cover 312, so that the flip cover 3122 can cover the first assembly opening 3121 to close the first assembly opening 3121. After the flip cover 3122 is rotated, the first assembly opening 3121 can be exposed. Since the first assembly opening 3121 is arranged opposite to the first input bus 331, the first input bus 331 can be exposed from the first assembly opening 3121 by opening the flip cover 3122, so as to facilitate the electrical connection operation between the first input bus 331 and the battery module 11.

[0137] For example, as shown in Figures 6 and 9, one end of the flip cover 3122 is rotatably connected to the first cover 312. The flip cover 3122 can be rotatably connected to the first cover 312 via a rotating shaft. That is, the flip cover 3122 is connected to a rotating shaft, and the first cover 312 is provided with an axial hole. The rotating shaft extends into the axial hole and can rotate within the axial hole, thereby allowing the flip cover 3122 to rotate relative to the axial hole, that is, allowing the flip cover 3122 to rotate relative to the first cover 312. The flip cover 3122 can also be rotatably connected to the first cover 312 via a virtual axis structure. The virtual axis structure includes an arc-shaped slider. The first cover 312 is provided with an arc-shaped slot. The slider slides in the slot and moves along an arc-shaped trajectory relative to the slot, thereby allowing the flip cover 3122 provided with the slider to rotate relative to the first cover 312. The other end of the flip cover 3122 is engaged with the first cover 312 to facilitate closing or opening the flip cover 3122. Illustratively, a second bayonet is provided on the flip cover 3122 , and a second clamping block is provided on the first box cover 312 . When the flip cover 3122 is closed on the first box cover 312 , the second clamping block is located in the second bayonet, and the first box cover 312 is clamped with the flip cover 3122 .

[0138] The first input busbar 331 and the battery module 11 can be electrically connected via bolts 201. Since the second opening 211 is used to connect the first chamber to the accommodating chamber, and the first input busbar 331 is disposed opposite the second opening 211, the distance between the first input busbar 331 and the external connection terminal of the battery module 11 is closer, facilitating electrical connection between the first input busbar 331 and the battery module 11 within the accommodating chamber. During assembly, to improve assembly efficiency, the electrical component assembly and the first electrical connection structure 330 can be first installed within the first box body 310, and then the first box body 310 can be installed within the first chamber 222. After the battery module 11 is installed within the accommodating chamber 290, the first electrical connection structure 330 can be connected to the battery module 11. In other words, when the first electrical connection structure 330 is connected to the battery module 11, the first box cover 312 is already covering the first box body 311. Because of the provision of the flip cover 3122, opening the flip cover 3122 exposes the first input busbar 331. Inserting the bolt 201 through the first assembly opening 3121 into the first inner cavity 313 electrically connects the first input busbar 331 to the battery module 11. The electrical connection between the first electrical connection structure 330 and the battery module 11 can be completed without opening the first cover 312, thereby improving the assembly efficiency of the battery 10 incorporating the case 200.

[0139] Since the first input busbar 331 is disposed opposite the first assembly opening 3121, the structure connected to the first input busbar 331 must also be disposed opposite the first input busbar 331. The battery module 11 has an external connection terminal 111, which is used to connect to the first input busbar 331. Since the position of the external connection terminal 111 on the battery module 11 does not necessarily correspond exactly to the position of the first input busbar 331, in some embodiments, as shown in Figures 12 and 13, the first electrical connection structure 330 further includes a first adapter structure 332. The first adapter structure 332 includes a first adapter terminal 3321, a second adapter terminal 3322, and a bent adapter body 3323. The first adapter terminal 3321 and the second adapter terminal 3322 are connected by the bent adapter body 3323. The first adapter terminal 3321 is used to connect to the battery module 11, and the second adapter terminal 3322 is electrically connected to the first input busbar 331.

[0140] The first transfer structure 332 is a conductive structure, exemplarily a copper busbar. As shown in Figure 13 , the first transfer structure 332 has a first transfer end 3321 and a second transfer end 3322 at its two ends, respectively. The area between the first transfer end 3321 and the second transfer end 3322 is the bent transfer body 3323. The names "first transfer end 3321," "second transfer end 3322," and "bent transfer body 3323" are simply used to delineate different functional areas on the first transfer structure 332 and do not represent three separate structures. Illustratively, the first adapter terminal 3321, the bent adapter body 3323, and the second adapter terminal 3322 are an integral structure. Alternatively, the first adapter structure 332 may include two independent structures, one of which includes the first adapter terminal 3321 and a portion of the bent adapter body 3323, and the other includes the second adapter terminal 3322 and another portion of the bent adapter body 3323. The two portions of the bent adapter body 3323 are electrically connected (e.g., welded), thereby electrically connecting the first adapter terminal 3321 and the second adapter terminal 3322. Illustratively, in FIG13 , the first adapter terminal 3321 is parallel to the second adapter terminal 3322. In other embodiments, the first adapter terminal 3321 may not be parallel to the second adapter terminal 3322. The relative positional relationship between the first adapter terminal 3321 and the second adapter terminal 3322 may be determined based on the relative positional relationship between the external connection terminal 111 of the battery module 11 and the first input busbar 331. The first transfer end 3321 is parallel to the first input bus bar 331 , and the second transfer end 3322 is parallel to the external connection end 111 .

[0141] In some embodiments, as shown in Figures 14 and 15, the first side wall 210 is provided with a first connector 360, and the first connector 360 is installed on the side of the first side wall 210 away from the accommodating cavity 290. The first electrical connection structure 330 also includes a first output bus 334, and the first output bus 334 is electrically connected to the first connector 360.

[0142] The first output busbar 334 is part of the first electrical connection structure 330 . The first electrical connection structure 330 is electrically connected to the battery module 11 . Specifically, the first electrical connection structure 330 is electrically connected to the first connector 360 via the first output busbar 334 , thereby electrically connecting the battery module 11 to the first connector 360 . The first connector 360 is mounted on the side of the first sidewall 210 away from the accommodating cavity 290 , i.e., on the same side as the first protrusion 220 . The first connector 360 has an interface for receiving a cable for electrical connection to the electrical device 1 . The first connector 360 establishes an electrical connection between the battery 10 and the electrical device 1 , enabling the battery module 11 to supply power to devices within the electrical device 1 that require electrical energy. The first connector 360 functions as an electrical energy transmission device. For example, the first connector 360 can be a high-voltage connector, which can be used in the high-voltage current circuit of a new energy vehicle, connecting the battery module 11 to various components of the vehicle's overall system.

[0143] In some embodiments, please continue to refer to FIG. 14 and FIG. 15 , the first electrical connection structure 330 further includes a second adapter structure 333 , and the second adapter structure 333 is electrically connected to the first output bus 334 and the first connector 360 .

[0144] If the distance between the first output busbar 334 and the first connector 360 is relatively far, or the connection between the first output busbar 334 and the first connector 360 is not parallel, a second adapter structure 333 is used to electrically connect the first output busbar 334 to the first connector 360. One end of the second adapter structure 333 is electrically connected to the first output busbar 334, and the other end is electrically connected to the first connector 360. The provision of the second adapter structure 333 facilitates the electrical connection between the first output busbar 334 and the first connector 360.

[0145] The second adapter structure 333 is a conductive structure and may include a copper busbar. The second adapter structure 333 may be connected to the first output busbar 334 via bolts 201 , and the second adapter structure 333 may be connected to the first connector 360 via bolts 201 .

[0146] In some embodiments, as shown in Figure 15, the box body 200 also includes a mounting base 340, which is installed on the first side wall 210, and the first output bus 334 and the second adapter structure 333 are connected to the mounting base 340, the first output bus 334 includes a first output end 3341 and a second output end 3342, the second adapter structure 333 includes a first adapter bus 3331 and a second adapter bus 3332, the first adapter bus 3331 is electrically connected to the first output end 3341, and the second adapter bus 3332 is electrically connected to the second output end 3342, the mounting base 340 includes an insulating barrier 341, the first output end 3341 and the second output end 3342 are respectively located on both sides of the insulating barrier 341, and the first adapter bus 3331 and the second adapter bus 3332 are respectively located on both sides of the insulating barrier 341.

[0147] The connection end of the first connector 360 has positive and negative poles. The first output busbar 334 includes two output terminals, one of which is called a first output terminal 3341 and the other is called a second output terminal 3342. The second adapter structure 333 includes two electrically disconnected portions, one of which is called a first adapter busbar 3331 and the other is called a second adapter busbar 3332. The first output terminal 3341 is connected to the positive connection terminal 361 of the first connector 360 via the first adapter busbar 3331, while the second output terminal 3342 is connected to the negative connection terminal 362 of the first connector 360 via the second adapter busbar 3332.

[0148] The mounting base 340 plays a certain limiting role for the first output bus 334 and the second adapter structure 333. During the installation process of the first output bus 334 and the second adapter structure 333, the limiting effect of the mounting base 340 can reduce the shaking of the first output bus 334 and the second adapter structure 333, thereby facilitating electrical connection operations.

[0149] Since the mounting base 340 has the insulating barrier 341 , the first output end 3341 can be insulated and isolated from the second output end 3342 , and the first transfer bus 3331 can be insulated and isolated from the second transfer bus 3332 , thereby improving the safety performance of the first power distribution module 300 .

[0150] In some examples, as shown in Figures 14 and 15 , the mounting base 340 is provided with two threaded holes, one on each side of the insulating barrier 341. Through holes are provided on the first output terminal 3341, the second output terminal 3342, the first transfer busbar 3331, and the second transfer busbar 3332. A bolt 201 passes through the through holes in the first output terminal 3341 and the first transfer busbar 3331 and then screws into the threaded hole of the mounting base 340, thereby securing the first output terminal 3341 and the first transfer busbar 3331 to one side of the insulating barrier 341 on the mounting base 340. Another bolt 201 passes through the through hole in the second output terminal 3342 and the through hole in the second transfer busbar 3332 and then screws into the other threaded hole of the mounting base 340, thereby securing the second output terminal 3342 and the second transfer busbar 3332 to the other side of the insulating barrier 341 on the mounting base 340.

[0151] In some examples, the first output busbar 334 is located on a side of the second adapter structure 333 away from the mounting base 340, that is, the second adapter structure 333 is located between the first output busbar 334 and the mounting base 340. This arrangement facilitates assembly. During assembly, the mounting base 340 and the first connector 360 are respectively connected to the first sidewall, and the second adapter structure 333 is connected to the first connector 360, before the first power distribution module 300 is installed in the housing 200. After the first power distribution module 300 is placed in the first chamber 222, the first output busbar 334 and the second adapter structure 333 are positioned opposite each other, and then the first output busbar 334, the second adapter structure 333, and the mounting base 340 are connected.

[0152] In some embodiments, the electrical component group includes multiple electrical components, a housing 327 is provided in the first inner cavity 313, and at least two electrical components are installed in the housing 327. The housing 327 integrates the at least two electrical components into one, thereby improving the assembly efficiency of the first power distribution module 300.

[0153] In some embodiments, as shown in Figure 16, the multiple electrical components included in the electrical component group can be a pre-charge relay 321, a pre-charge resistor 322, a main positive relay 323, a main negative relay 324 or a battery management module 325, and a shell 327 is provided in the first inner cavity 313, and the pre-charge relay 321, the pre-charge resistor 322 and the main positive relay 323 are all installed in the shell 327.

[0154] The pre-charge relay 321, pre-charge resistor 322, and main positive relay 323 are connected between the positive terminal 361 of the first connector 360 and the battery module 11. The main negative relay 324 and battery management module 325 are connected between the negative terminal 362 of the first connector 360 and the battery module 11. The pre-charge relay 321 and pre-charge resistor 322 are used to reduce the inrush current when the battery 10 is powered on, protecting the battery 10 and the main positive relay 323. The main positive relay 323 and main negative relay 324 are used to control the output power of the battery 10.

[0155] The battery management system (BMS) 325 is used to monitor each battery module 11 within the battery 10, or each battery cell within each battery module 11, to prevent overcharging or overdischarging of the battery modules 11 or battery cells, thereby extending the service life of the battery 10. The battery management module 325 includes a circuit board 326 and one or more detection devices 370 connected to the circuit board 326. The detection devices 370 are used to monitor the status of the battery 10. For example, the detection devices 370 may include a voltage sensor, a current sensor, a temperature sensor, etc.

[0156] For example, as shown in FIG11 , the housing 200 may further include a second connector 350, and the battery management module 325 is electrically connected to the second connector 350. The second connector 350 may be a low-voltage connector, and the second connector 350 and the detection device 370, as well as the detection device 370 and the circuit board 326, are electrically connected via low-voltage wiring harnesses 3125.

[0157] In the above embodiment, the pre-charging relay 321 , the pre-charging resistor 322 and the main positive relay 323 are integrated into one body through the housing 327 , so as to improve the assembly efficiency of the first power distribution module 300 .

[0158] Exemplarily, as shown in Figure 16, the shell 327 includes a first shell 3271 and a second shell 3272, and the first shell 3271 and the second shell 3272 are snap-connected. The first shell 3271 and the second shell 3272 both have a chamber. After the first shell 3271 and the second shell 3272 are snap-connected, the chamber of the first shell 3271 is connected to the chamber of the second shell 3272 to form the inner cavity of the shell 327. The inner cavity of the shell 327 is used to install the pre-charge relay 321, the pre-charge resistor 322 and the main positive relay 323.

[0159] In some embodiments, as shown in FIG16 , a baffle 328 is disposed inside the housing 327. The baffle 328 divides the interior of the housing 327 into three sections, each for accommodating the pre-charge relay 321, the pre-charge resistor 322, and the main positive relay 323. This arrangement provides better guidance for the pre-charge relay 321, the pre-charge resistor 322, and the main positive relay 323. The baffle 328 can be disposed within the first housing 3271 or within the second housing 3272, or both the first housing 3271 and the second housing 3272.

[0160] In some embodiments, a guide body is provided on at least one of the baffle 328 and the inner wall of the housing 327, and a guide groove is provided on the outer wall of the corresponding pre-charge relay 321, pre-charge resistor 322, and main positive relay 323. Taking the case where the main positive relay 323 is provided with a guide groove and the first housing 3271 is provided with a guide body as an example, during the installation of the main positive relay 323, after aligning the guide groove of the main positive relay 323 with the guide body, the main positive relay 323 is pushed into the inner cavity of the first housing 3271, and the guide body extends into the guide groove. Due to the cooperation between the guide body and the guide groove, it is easy to push the main positive relay 323 into the first housing 3271 along the set direction (the extension direction of the guide groove). After the main positive relay 323 is placed in the first housing 3271, the guide body is still located in the guide groove. The cooperation between the guide body and the guide groove also serves as a limiter for the main positive relay 323, which can reduce the shaking of the main positive relay 323 relative to the first housing 3271 to a certain extent.

[0161] After the first shell 3271 and the second shell 3272 are snapped together, the two ends of the pre-fill relay 321 are in contact with the inner wall of the first shell 3271 and the inner wall of the second shell 3272 respectively. With this arrangement, the first shell 3271 and the second shell 3272 have a relatively better limiting effect on the pre-fill relay 321. Similarly, the two ends of the main positive relay 323 are in contact with the inner wall of the first shell 3271 and the inner wall of the second shell 3272 respectively. The two ends of the pre-fill resistor 322 are in contact with the inner wall of the first shell 3271 and the inner wall of the second shell 3272 respectively. With this arrangement, there is no need to reserve installation space in the inner cavity of the shell 327. The pre-fill relay 321, the pre-fill resistor 322 and the main positive relay 323 are limited by the size of the inner cavity, and auxiliary limiting is performed by the cooperation of the guide body and the guide groove, which simplifies the installation process, makes the structure more compact, and saves installation space.

[0162] In some embodiments, the first box body 311 is provided with a plurality of second assembly openings 3111, each of which is fitted with an insulating cover 3112. This arrangement allows electrical connections to be made between other electrical components and the electrical components within the first box body 311 without opening the first box body 311 or the first cover 312, simplifying the assembly process. Furthermore, since electrical connections can be made to the electrical components simply by opening the insulating cover 3112, there is no need to reserve space within the first box body 310 for these connections, allowing the size of the first box body 310 to be further reduced.

[0163] In some embodiments, as shown in FIG8 , the first box body 311 is provided with at least one second assembly port 3111 corresponding to the pre-fill relay 321, the pre-fill resistor 322, and the main positive relay 323, and each second assembly port 3111 is provided with an insulating cover 3112. The connection points of the pre-fill relay 321, the pre-fill resistor 322, and the main positive relay 323 are respectively arranged opposite to the corresponding second assembly ports 3111. With such an arrangement, other electrical components can be electrically connected to the pre-fill relay 321, the pre-fill resistor 322, and the main positive relay 323 without opening the first box body 311 or the first box cover 312, simplifying the assembly process. The other electrical components may be a detection device 370.

[0164] In some embodiments, as shown in FIG9 , a wiring trough 3123 is provided on the side of the first cover 312 facing away from the first inner cavity 313. A buckle 3124 is provided within the wiring trough 3123 to secure a wiring harness 3125 within the wiring trough 3123. For example, the detection device 370 and the second connector 350 are connected via a low-voltage wiring harness 3125. One end of the low-voltage wiring harness 3125 is connected to the detection device 370, while the other end extends from the first cover 312 along the wiring trough 3123 to the second connector 350, where it is connected thereto. With this arrangement, the majority of the low-voltage wiring harness 3125 is located outside the first cover 312, rather than within the first inner cavity 313. This frees up space within the first inner cavity 313, facilitating further reduction in the size of the first housing 310 and, consequently, a further reduction in the size of the first power distribution module 300, resulting in a more compact structure. Buckle 3124 secures low-voltage wiring harness 3125 within wiring trough 3123 to a certain extent, making wiring harness 3125 more organized and easier to maintain. Wire trough 3123 also provides a degree of protection for wiring harness 3125, reducing wear and tear on wiring harness 3125. Secure low-voltage wiring harness 3125 with buckle 3124, allowing operators to secure and remove the low-voltage wiring harness without tools, improving maintenance convenience.

[0165] For example, the buckle 3124 is positioned within the wiring trough 3123, meaning it does not extend beyond the wiring trough 3123. This arrangement eliminates protruding structures on the outer surface of the first cover 312, resulting in a relatively smooth and aesthetically pleasing appearance. The buckle 3124 is positioned within the wiring trough 3123, and the inner walls of the trough 3123 protect the buckle 3124, reducing the likelihood of it breaking.

[0166] For example, a wiring hole is provided on the first cover 312, which passes through the first cover 312 and is connected to the first inner cavity 313 and the wiring groove 3123, respectively. In this way, the wiring harness in the first cover 312 can pass through the wiring hole and into the wiring groove 3123. There can be multiple wiring holes, and different wiring holes can be used to pass different wiring harnesses.

[0167] In some embodiments, the second power distribution module 400 can be connected to the inner wall of the second chamber 262 so that the second power distribution module 400 is connected to the housing 200, thereby reducing relative shaking between the second power distribution module 400 and the housing 200. The second power distribution module 400 and the inner wall of the second chamber 262 can be connected by bonding, snapping, screwing, etc. For example, a protrusion is provided on the inner wall of the second chamber 262, and the protrusion is provided with a through hole. The second power distribution module 400 also has an ear plate, and the ear plate is provided with a through hole. The through hole on the protrusion is opposite to the through hole on the ear plate. The threaded end of the bolt passes through the through hole of the protrusion and the through hole of the ear plate in sequence and is connected to the nut, thereby fixing the ear plate to the protrusion, so that the second power distribution module 400 is connected to the inner wall of the second chamber 262, that is, the second power distribution module 400 is connected to the housing 200. The second power distribution module 400 is connected to the box body 200 by bolts 201 , so that the second power distribution module 400 can be separated from the box body 200 after the bolts 201 are removed, so as to facilitate maintenance of the second power distribution module 400 .

[0168] The second power distribution module 400 may include a plurality of different electrical components, and the plurality of electrical components may be separately installed in the second chamber 262. In some embodiments, as shown in Figures 17 and 18, the second power distribution module 400 includes a second box body 410, which includes a second box body 411 and a second box cover 412. The second box body 411 and the second box cover 412 are detachably connected. The second box body 411 and the second box cover 412 cooperate to form a second inner cavity 413, and the second inner cavity 413 is installed with a voltage-dividing fuse structure 430 and a voltage-dividing relay 440. The voltage-dividing fuse structure 430 and the voltage-dividing relay 440 are electrically connected, and the voltage-dividing fuse structure 430 and the voltage-dividing relay 440 are respectively electrically connected to the battery module 11. The voltage-dividing fuse structure 430 and the voltage-dividing relay 440 are both installed in the second chamber.

[0169] The voltage-dividing insurance structure 430 can cut off the circuit in time when an abnormality occurs in the battery 10 to which the housing 200 is applied, thereby improving the safety of the entire battery 10 to which the housing 200 is applied.

[0170] The voltage-sharing relay 440 can convert the high voltage of the battery module 11 into a low voltage to facilitate the control of low-voltage equipment, and can also improve the safety of the battery 10 applied with the box 200.

[0171] The second box body 411 is used to form a storage space for accommodating multiple electrical components, including a voltage-sharing fuse structure 430 and a voltage-sharing relay 440. The second box cover 412 covers the opening of the second box body 411, thereby forming a relatively sealed second inner cavity 413 with the second box body 411, thereby protecting the voltage-sharing fuse structure 430 and the voltage-sharing relay 440 located in the second inner cavity 413.

[0172] A second electrical connection structure 420 may also be provided in the second inner cavity 413, and is used to electrically connect the battery module 11 to one or more electrical components in the second inner cavity 413. The second electrical connection structure 420 is a conductor, for example, may include a copper busbar.

[0173] Since the second power distribution module 400 includes a second box body 410, the voltage-sharing fuse structure 430 and the voltage-sharing relay 440 are both mounted within the second box body 410, and the plurality of electrical components are mounted within the second inner cavity 413 of the second box body 410. During assembly of the second power distribution module 400, the second box body 410 only needs to be installed within the first cavity 222. During maintenance of the second power distribution module 400, the plurality of electrical components can be removed by disassembling and removing the second box body 410, thereby improving assembly and disassembly efficiency during maintenance.

[0174] Through the above arrangement, the detachable connection between the second box body 411 and the second box cover 412 facilitates the maintenance of the voltage-dividing insurance structure 430 and the voltage-dividing relay 440 .

[0175] In some embodiments, as shown in Figures 19 and 20, one of the second cover 412 and the second body 411 is provided with a hook 4121, and the other is provided with a slot 4111. In other words, the hook 4121 can be provided on the second cover 412 and the second body 411 is provided with the slot 4111, or the slot 4111 can be provided on the second cover 412 and the second body 411 is provided with the hook 4121. The second cover 412 and the second body 411 are connected through the cooperation of the hook 4121 and the slot 4111.

[0176] Taking the second cover 412 as an example, in which the hook 4121 is provided on the second box body 411 and the slot 4111 is provided on the second box body, the hook 4121 is provided on the outer peripheral side of the second box cover 412 and protrudes from the side of the second box cover 412 facing the second inner cavity 413. The number of hooks 4121 can be multiple, and the multiple hooks 4121 are spaced apart and distributed on the outer wall of the second box cover 412. Exemplarily, the number of hooks 4121 is four, and the second box cover 412 has two outer walls spaced apart and arranged opposite to each other along the second direction (Y direction), one outer wall is provided with two hooks 4121, and the other outer wall is also provided with two hooks 4121. The hooks 4121 can be made of plastic.

[0177] The slot 4111 extends through the sidewall of the second body 411, or the slot 4111 may be provided on the inner or outer wall of the second body 411. For example, the slot 4111 extends through the sidewall of the second body 411, and has an opening on both the inner and outer walls of the second body 411. There may be multiple slots 4111, with the multiple slots 4111 corresponding one-to-one with the multiple hooks 4121. In some examples, the second body 411 has two sidewalls spaced apart and arranged opposite each other along a second direction (Y direction), one of the sidewalls being provided with two slots 4111 along the second direction (Y direction), and the two slots 4111 on the sidewall being spaced apart. The other sidewall is also provided with two slots 4111 along the second direction (Y direction), and the two slots 4111 on the sidewall are also spaced apart.

[0178] During assembly, when the second cover 412 is closed onto the second body 411, a hook 4121 on a side of the second cover 412 facing the second inner cavity 413 extends into the second inner cavity 413. At least a portion of the hook 4121 extends into the corresponding slot 4111 through an opening of the slot 4111 located on the inner wall of the second cover 412. The inner wall of the slot 4111 limits the position of the hook 4121 in the slot 4111, thereby achieving a mating connection between the hook 4121 and the slot 4111. Optionally, the hook 4121 may include an elastic arm having a certain elastic deformation capability. The elastic arm is connected to the first cover 312 and is provided with a protrusion. As the hook 4121 extends into the second inner cavity 413, the projection on the elastic arm abuts against the side wall of the second inner cavity 413. The elastic arm, squeezed by the side wall of the second inner cavity 413, undergoes a certain degree of elastic deformation until the projection faces the opening of the slot 4111 located on the inner wall of the second cover 412. That is, until the projection faces the opening of the slot 4111 located on the side wall of the second inner cavity 413, the elastic arm returns to its pre-elastic deformation state, pushing the projection into the slot 4111, thereby engaging the hook 4121 with the slot 4111. The second cover 412 is connected to the second box body 411 through the engagement of the buckle 3124 with the slot 4111.

[0179] Through the above arrangement, the cooperation between the hook 4121 and the slot 4111 facilitates the disassembly and assembly of the second box cover 412 and the second box body 411 .

[0180] In some embodiments, the first chamber 222 and the second chamber 262 in the box body 200 are respectively located on both sides of the box body 200 in the first direction (X direction). There are four battery modules 11, and each battery module 11 includes an odd number of battery cells arranged in sequence along the second direction (Y direction). The second direction (Y direction) is perpendicular to the first direction (X direction). The battery cells are electrically connected in sequence, and the battery cells on one side are provided with an external connection terminal 111, and the battery cells on the other side are provided with an internal connection terminal 112; the four battery modules 11 are distributed in a 2×2 array in the accommodating cavity, and the internal connection terminals 112 of two adjacent battery modules 11 in the first direction (X direction) are electrically connected, wherein the external connection terminals 111 of two battery modules 11 are electrically connected to the first power distribution module 300, and the external connection terminals 111 of the other two battery modules 11 are electrically connected to the second power distribution module 400.

[0181] In Figure 21, a battery module 11 includes 13 battery cells, which are sequentially connected in series. In other embodiments, the battery module 11 may include other numbers of battery cells, and adjacent battery cells may be connected in series, in parallel, or in a mixed manner. For example, the battery module 11 may include 46 battery cells, which are divided into two groups of 23 battery cells each. The battery cells in each group are sequentially connected in series, and the two groups of battery cells are connected in parallel.

[0182] In this arrangement, since each battery module 11 includes an odd number of battery cells, adjacent battery cells are electrically connected, resulting in the internal connection terminals 112 and external connection terminals 111 of the battery module 11 being located on different sides. For example, if the connection portions on the battery cells are located on opposite sides of the battery cells along a first direction (X direction), and the two battery cells at the outermost edges of the plurality of battery cells in the battery module 11 are referred to as the first battery cell and the last battery cell, respectively, then if the internal connection terminal 112 of the first battery cell is located on one side of the first direction (X direction), then the external connection terminal 111 is located on the other side of the last battery cell along the first direction (X direction). Thus, when the four battery modules 11 are arranged in a 2×2 array, as shown in FIG. 22 , the internal connection terminals 112 of the two battery modules 11 spaced apart in the first direction (X direction) are both located between the two battery modules 11, and the external connection terminals 111 of the two battery modules 11 spaced apart in the second direction (Y direction) are also located in an area where the two battery modules 11 are close to each other. Considering the four battery modules 11 as a whole, in the first direction (X direction), the multiple internal connection terminals 112 are all located in the central region of the whole in the first direction (X direction), and in the second direction (Y direction), the multiple external connection terminals 111 are all located in the central region of the whole in the second direction (Y direction). Because the internal connection terminals 112 of two battery modules 11 spaced apart in the first direction (X direction) are connected, and both internal connection terminals 112 are located in the central region of the second direction (Y direction), the distance between the two connection terminals is relatively close, allowing for connection using a shorter adapter structure. Because both internal connection terminals 112 are located in the central region of the second direction (Y direction), the two first input busbars 331 connected to these two internal connection terminals 112 are also located in the central region of the second direction (Y direction), and the distance between the two first input busbars 331 is relatively close. With this arrangement, a relatively small first assembly opening 3121 is opened in the first cover 312 to expose both first input busbars 331. The relatively close proximity of the two first input busbars 331 facilitates rapid and sequential connection of the two first input busbars 331 to the external connection terminals 111 of their respective battery modules 11, thereby improving assembly efficiency of the battery 10. On the other side of the first direction (X direction), the external connection terminals 111 of the other two battery modules 11 are also located relatively centrally in the second direction (Y direction), thereby facilitating electrical connection with the second power distribution module 400.

[0183] In a specific embodiment of the present application, the battery 10 includes a battery module 11 , a box 200 , a top cover 100 , a first power distribution module 300 , a second power distribution module 400 , a first connector 360 , and a second connector 350 .

[0184] The top cover 100 covers one side of the housing 200 in the third direction (Z direction), forming a receiving cavity 290 between the top cover 100 and the housing 200. The battery module 11 is received in the receiving cavity 290. The housing 200 has two opposing side walls in the first direction (X direction), namely a first side wall 210 and a second side wall 250. The first side wall 210 is provided with a first protrusion 220 protruding away from the second side wall 250, and the second side wall 250 is provided with a second protrusion 260 protruding away from the first side wall 210. In the second direction (Y direction), the length of the first protrusion 220 is less than that of the first side wall 210 and is located in a relatively central area of ​​the first side wall 210. The length of the second protrusion 260 is less than that of the second side wall 250 and is located in a relatively central area of ​​the second side wall 250. The housing 200 has a first chamber 222 and a second chamber 262. The first chamber 222 extends through the first protrusion 220 along the first direction (X) and is partially located within the first sidewall 210. The second chamber 262 extends through the second protrusion 260 along the second direction (Y) and is partially located within the second sidewall 250. The first power distribution module 300 is installed within the first chamber 222, and the second power distribution module 400 is installed within the second chamber 262. The first chamber 222 has a first opening 221 on one side in the first direction (X) and a second opening 211 on the other side. The first power distribution module 300 enters the first chamber 222 through the first opening 221. A first cover 230 is provided at the first opening 221. The first cover 230 is detachably connected to the first protrusion 220 via bolts 201. A sealing ring is provided between the first cover 230 and the first protrusion 220. The second chamber 262 is provided with a third opening 261 on one side of the first direction (X direction) and a fourth opening 251 on the other side. The second power distribution module 400 enters the second chamber 262 through the third opening 261. A second cover 270 is provided at the third opening 261. The second cover 270 and the second protrusion 260 are detachably connected by bolts 201. A sealing ring is provided between the second cover 270 and the second protrusion 260.

[0185] The first power distribution module 300 includes a first housing 310, a first electrical connection structure 330, a housing 327, a pre-charge relay 321, a pre-charge resistor 322, a main positive relay 323, a main negative relay 324, and a battery management module 325. The first housing 310 includes a detachably connected first body 311 and a first cover 312. The housing 327 includes a detachably connected first shell 3271 and a second shell 3272. The pre-charge relay 321, the pre-charge resistor 322, and the main positive relay 323 are all mounted within the housing 327. A first inner cavity 313 is formed between the first body 311 and the first cover 312. The first electrical connection structure 330, the housing 327, the main negative relay 324, and the battery management module 325 are all mounted within the first inner cavity 313. The battery management module 325 includes a circuit board 326 and a plurality of detection devices 370.

[0186] The first electrical connection structure 330 includes a first input busbar 331 for electrically connecting to the battery module 11. The first input busbar 331 is disposed opposite the second opening 211. The first cover 312 is provided with a first assembly opening 3121, which is disposed opposite the first input busbar 331. A flip cover 3122 is disposed at the first assembly opening 3121 and is rotatably connected to the first cover 312. A wiring groove 3123 is provided on the side of the first cover 312 facing away from the first inner cavity 313. A latch 3124 is disposed within the wiring groove 3123. The detection device 370 and the second connector 350 are connected via a low-voltage wiring harness 3125. One end of the low-voltage wiring harness 3125 is connected to the detection device 370, and the other end extends from the first cover 312, along the wiring groove 3123, to the second connector 350, and then connects to the second connector 350.

[0187] There are four battery modules 11, each containing an odd number of battery cells. Each battery module 11 has an equal number of battery cells. Adjacent battery cells within the same battery module 11 are electrically connected. Battery cells on one side of the battery module 11 have internal connection terminals 112, while battery cells on the other side have external connection terminals 111. After the four battery modules 11 are placed in the accommodating cavity 290, they are arranged in a 2×2 array within the cavity. In the two battery modules 11 close to the first side wall 210, in the first direction (X direction), the external connection ends 111 of the two battery modules 11 are located in the middle of the box body 200 and are located on the side of the corresponding battery cell close to the first side wall 210; the internal connection ends 112 of the two battery modules 11 are located on the side away from the other battery module 11 and are located on the side of the corresponding battery cell close to the second side wall 250, and the external connection ends 111 of the two battery modules 11 are electrically connected to the first distribution module 300. In the two battery modules 11 close to the second side wall 250, in the first direction (X direction), the external connection ends 111 of the two battery modules 11 are located in the middle of the box body 200 and are located on the side of the corresponding battery cell close to the first side wall 210; the internal connection ends 112 of the two battery modules 11 are located on the side away from the other battery module 11 and are located on the side of the corresponding battery cell close to the first side wall 210, and the external connection ends 111 of the two battery modules 11 are electrically connected to the second distribution module 400.

[0188] The first input busbar 331 in the first power distribution module 300 is electrically connected to the external connection terminals 111 of the two battery modules 11 adjacent to the first power distribution module 300 via a first adapter structure 332. The external connection terminals 111 of the two battery modules 11 adjacent to the second power distribution module 400 are electrically connected to the second power distribution module 400. The internal connection terminals 112 of two battery modules 11 adjacent to each other in the first direction (X direction) are connected to each other.

[0189] The first connector 360 and the second connector 350 are both mounted on the first sidewall 210, and are located on either side of the first protrusion 220 in the second direction (the Y direction). The first connector 360 is a high-voltage connector, and the second connector 350 is a low-voltage connector. The first connector 360 includes a positive connection terminal 361 and a negative connection terminal 362. The first electrical connection structure 330 includes a first output busbar 334, which is connected to the first connector 360 via a second adapter structure 333. The first output bus 334 includes a first output end 3341 and a second output end 3342, and the first output end 3341 and the second output end 3342 both extend to the outside of the first protrusion 220. The mounting base 340 is provided with two threaded holes, and the two threaded holes are respectively located on both sides of the insulating barrier 341. The first output end 3341, the second output end 3342, the first transfer bus 3331 and the second transfer bus 3332 are respectively provided with through holes. A bolt 201 passes through the through holes on the first output end 3341 and the first transfer bus 3331 and is screwed into the threaded hole of the mounting base 340, thereby fixing the first output end 3341 and the first transfer bus 3331 to one side of the insulating barrier 341 on the mounting base 340. Another bolt 201 passes through the through hole of the second output terminal 3342 and the through hole of the second transfer busbar 3332, and then screws into another threaded hole of the mounting base 340, thereby securing the second output terminal 3342 and the second transfer busbar 3332 to the other side of the insulating barrier 341 on the mounting base 340. One of the first transfer busbar 3331 and the second transfer busbar 3332 is connected to the positive electrode connection terminal 361, and the other is connected to the negative electrode connection terminal 362.

[0190] FIG23 is a schematic diagram of the circuit connections of the battery 10. As shown in FIG23 , two battery modules 11 spaced apart in the first direction (X direction) of the four battery modules 11 are electrically connected. Of the two battery modules 11 located near the first power distribution module 300, one is electrically connected to a port of the battery management module 325 in the first power distribution module 300, and the other is electrically connected to the main positive relay 323. The pre-charge resistor 322 and the pre-charge relay 321 are connected in series and then connected in parallel across the main positive relay 323. The battery management module 325 has six ports, one of which is connected in series with the main negative relay 324, another is connected in series with the negative terminal of the first connector 360, and the main negative relay 324 is connected to the negative terminal of the first connector 360. Another port is electrically connected to the second connector 350. The battery management module 325 also has two ports connected to the main positive relay 323. Among the two battery modules 11 close to the second power distribution module 400, one battery module 11 is electrically connected to the voltage-dividing fuse structure 430 of the second power distribution module 400, and the other battery module 11 is electrically connected to the voltage-dividing relay 440. The voltage-dividing fuse structure 430 and the voltage-dividing relay 440 are connected in series. After the current at the positive connection end of the first connector 360 flows through the battery module 11, it first flows through the voltage-dividing relay 440 and then flows through the voltage-dividing fuse structure 430.

[0191] The embodiment of the present application further provides an electrical device, comprising the battery 10 described above.

[0192] Electrical devices include but are not limited to mobile phones, portable devices, laptops, electric vehicles, electric cars, ships, spacecraft, electric toys and electric tools, etc. For example, spacecraft include airplanes, rockets, space shuttles and spacecraft, etc. Electric toys include fixed or mobile electric toys, such as game consoles, electric vehicle toys, electric ship toys and electric airplane toys, etc. Electric tools include metal cutting power tools, grinding power tools, assembly power tools and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators and electric planers.

[0193] Please refer to Figure 24. For the convenience of description, the vehicle in this example is taken as the power-consuming device 1 as an example. The vehicle 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 augmented-program vehicle, etc. A driving mechanism 30, a control mechanism 20 and a battery 10 can be set inside the vehicle. The driving mechanism 30 can be a motor, etc., and the control mechanism 20 is used to control the battery 10 to power the driving mechanism 30. For example, a battery 10 can be set at the bottom, front or rear of the vehicle. The battery 10 can be used to power other equipment in the vehicle. For example, the battery 10 can be used as the operating power source of the vehicle and for the circuit system of the vehicle, for example, for the working power requirements during the start-up, navigation and operation of the vehicle. In another example, the battery 10 can not only be used as the operating power source of the vehicle, but also as the driving power source of the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0194] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A box, It is characterized in that The box body has a accommodating cavity, which is used to accommodate a battery module; the box body has a first side wall, and the first side wall is provided with a first convex portion protruding in a direction away from the accommodating cavity; the box body has a first chamber, and the first chamber is used to accommodate a distribution module electrically connected to the battery module; the first chamber passes through the first convex portion and is partially located on the first side wall; the first convex portion has a first opening connected to the first chamber; the first side wall has a second opening connected to the first chamber; and the first opening is covered with a first cover.

2. The box as claimed in claim 1, It is characterized in that The box body has a second side wall arranged opposite to the first side wall, and the second side wall is provided with a second convex portion protruding toward a side away from the first side wall. The box body has a second chamber, and the second chamber is used to accommodate a distribution module electrically connected to the battery module. The second chamber passes through the second convex portion and is partially located on the second side wall. The second convex portion has a third opening connected to the second chamber, and the second side wall has a fourth opening connected to the second chamber. The third opening is covered with a second cover.

3. The box as claimed in claim 1 or 2, It is characterized in that The first opening is disposed on a side of the first protrusion facing away from the first side wall.

4. The box according to any one of claims 1 to 3, It is characterized in that The first cover body is detachably connected to the first protrusion.

5. The box according to any one of claims 1 to 4, It is characterized in that A first sealing structure is disposed between the first cover and the first protrusion.

6. A battery, It is characterized in that It comprises a battery module, a first power distribution module and a box as described in any one of claims 1 to 5, wherein the battery module is installed in the accommodating cavity of the box, the first power distribution module is installed in the first cavity of the box, and the battery module is electrically connected to the first power distribution module.

7. The battery according to claim 6, It is characterized in that The first power distribution module includes a first box body, which includes a first box body and a first box cover. The first box body and the first box cover are detachably connected. The first box body and the first box cover cooperate to form a first inner cavity. An electrical component group is arranged in the first inner cavity, and a first electrical connection structure for electrically connecting the electrical component group to the battery module in the accommodating cavity.

8. The battery according to claim 7, It is characterized in that The first electrical connection structure includes a first input busbar for electrically connecting to the battery module, the first input busbar is arranged opposite to the second opening, the first box cover is provided with a first assembly port, the first assembly port is arranged opposite to the first input busbar, a flip cover is provided at the first assembly port, and the flip cover is rotatably connected to the first box cover.

9. The battery according to claim 8, It is characterized in that The first electrical connection structure also includes a first adapter structure, which includes a first adapter end, a second adapter end and a bent adapter body, the first adapter end and the second adapter end are connected through the bent adapter body, the first adapter end is used to connect the battery module, and the second adapter end is electrically connected to the first input bus bar.

10. The battery according to any one of claims 7 to 9, It is characterized in that The battery further includes a first connector, which is mounted on a side of the first side wall away from the accommodating cavity. The first electrical connection structure further includes a first output busbar, which is electrically connected to the first connector.

11. The battery according to claim 10, It is characterized in that The first electrical connection structure further includes a second adapter structure, and the second adapter structure is electrically connected to the first output bus bar and the first connector respectively.

12. The battery according to claim 11, It is characterized in that The battery also includes a mounting seat, which is installed on a side of the first side wall away from the accommodating cavity, the first output bus and the second adapter structure are connected to the mounting seat, the first output bus includes a first output end and a second output end, the second adapter structure includes a first adapter bus and a second adapter bus, the first adapter bus is electrically connected to the first output end, and the second adapter bus is electrically connected to the second output end, the mounting seat includes an insulating barrier, the first output end and the second output end are respectively located on both sides of the insulating barrier, and the first adapter bus and the second adapter bus are respectively located on both sides of the insulating barrier.

13. The battery according to any one of claims 7 to 12, It is characterized in that The electrical component group includes a plurality of electrical components. A shell is disposed in the first inner cavity, and at least two of the electrical components are installed in the shell.

14. The battery according to any one of claims 7 to 13, It is characterized in that The first box body is provided with a plurality of second assembly openings, and each of the second assembly openings is respectively installed with an insulating cover.

15. The battery according to any one of claims 7 to 14, It is characterized in that A wiring groove is arranged on a side of the first box cover facing away from the first inner cavity, and a buckle is arranged in the wiring groove, and the buckle is used to fix the wiring harness in the wiring groove.

16. The battery according to any one of claims 6 to 15, It is characterized in that The battery includes a second power distribution module, which includes a voltage-dividing fuse structure and a voltage-dividing relay. The voltage-dividing fuse structure and the voltage-dividing relay are electrically connected, and the voltage-dividing fuse structure and the voltage-dividing relay are electrically connected to the battery module respectively. The voltage-dividing fuse structure and the voltage-dividing relay are both installed in the second chamber of the box.

17. The battery according to claim 16, It is characterized in that The second power distribution module includes a second box body, which is installed in the second chamber. The second box body includes a second box body and a second box cover. The second box body and the second box cover are detachably connected. The second box body and the second box cover cooperate to form a second inner cavity, and the voltage-dividing fuse structure and the voltage-dividing relay are both installed in the second inner cavity.

18. The battery according to claim 17, wherein, one of the second box cover and the second box body is provided with a hook, and the other is provided with a slot, and the second box cover and the second box body are connected by the cooperation of the hook and the slot.

19. The battery according to any one of claims 16 to 18, wherein, The first chamber and the second chamber are respectively located on both sides of the box body in the first direction. The number of the battery modules is four. Each battery module includes an odd number of battery cells arranged in sequence in the second direction. The second direction is perpendicular to the first direction. Each battery cell is electrically connected in sequence. The battery cells located on one side are provided with external connection terminals, and the battery cells on the other side are provided with internal connection terminals; The four battery modules are distributed in a 2×2 array in the accommodation cavity. The internal connection terminals of two adjacent battery modules in the first direction are electrically connected. The external connection terminals of two of the battery modules are electrically connected to the first power distribution module, and the external connection terminals of the other two battery modules are electrically connected to the second power distribution module.

20. An electrical device, wherein, The electrical device includes the battery according to any one of claims 6 to 19, and the battery is used to provide electrical energy.

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