Battery device and electric device

Abstract

The utility model belongs to the technical field of batteries, and provides a battery device and a power utilization device.The battery device comprises a battery monomer assembly, a power distribution assembly and a box body; wherein the power distribution assembly is electrically connected with the battery monomer assembly; the box body comprises a frame body, a first cover body, a second cover body and a third cover body, and the first cover body and the second cover body are oppositely arranged and connected with the frame body to jointly define a containing space; the accommodating space comprises a battery bin and a power distribution bin, the battery monomer assembly is accommodated in the battery bin, and the power distribution assembly is accommodated in the power distribution bin; the first cover body comprises a first sub-cover body and a second sub-cover body which are connected with each other, the first sub-cover body is connected to the frame body and matched with the battery compartment, and the second sub-cover body is connected to the frame body and matched with the power distribution compartment; the second sub-cover body is provided with an opening, the opening is arranged opposite to the power distribution assembly, and the third cover body covers the opening and is movably or detachably connected with the second sub-cover body. The utility model aims to improve the maintenance convenience of the power distribution assembly.

Description

TECHNICAL FIELD

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

[0002] With the rapid development of new energy technology, battery devices, as the core components of energy storage and supply, are widely used in various power utilization devices such as electric vehicles and energy storage systems. The battery device usually includes a battery monomer assembly, a power distribution assembly, and a box for accommodating these components. The power distribution assembly, as the connecting hub between the battery monomer assembly and the external circuit, undertakes important functions such as power distribution, detection and protection. The convenience of maintenance directly affects the overall efficiency and reliability of the battery device.

[0003] In related technologies, the box of the battery device usually adopts a whole sealing structure. When the power distribution assembly needs to be repaired, maintained or replaced, the entire box often needs to be disassembled, which leads to complicated operation and requires a lot of time and manpower. Especially for large battery devices, the maintenance efficiency is low. UTILITY MODEL CONTENT

[0004] The purpose of the present application is to provide a battery device and a power utilization device, aiming to solve the technical problem of complicated repair process, poor convenience and low repair efficiency of the power distribution assembly in the battery device.

[0005] In a first aspect, the present application provides a battery device, comprising:

[0006] a battery monomer assembly;

[0007] a power distribution assembly electrically connected with the battery monomer assembly;

[0008] a box including a frame, a first cover, a second cover and a third cover, the first cover and the second cover are oppositely arranged and both connected with the frame to jointly form a containing space; the containing space includes a battery compartment and a power distribution compartment, the battery monomer assembly is contained in the battery compartment, and the power distribution assembly is contained in the power distribution compartment; the first cover includes a first sub-cover and a second sub-cover connected with each other, the first sub-cover is connected to the frame and matches the battery compartment, and the second sub-cover is connected to the frame and matches the power distribution compartment; an open port is provided on the second sub-cover, the open port is oppositely arranged with the power distribution assembly, and the third cover is arranged on the open port and movably or detachably connected with the second sub-cover.

[0009] In the embodiment, the opening is arranged on the second sub-cover of the first cover of the box body, and the third cover capable of moving is arranged on the opening. When the power distribution assembly needs to be exposed or disassembled, only the third cover needs to be opened or disassembled, so that the power distribution assembly can be exposed for maintenance or disassembly, without the need to disassemble the first cover, the second sub-cover and the whole box body, thereby ensuring the integrity of the box body, reducing the frequency of disassembling the whole box body, making the disassembly and installation of the power distribution assembly and the box body more convenient, and being beneficial to improving the maintenance efficiency. In addition, since only the third cover is opened, other areas inside the box body remain closed, which can effectively reduce the risk of dust, water vapor and other impurities entering the accommodation space and affecting the working stability of the battery monomer assembly, thereby ensuring the sealing performance of the whole box body.

[0010] In one of the embodiments, the power distribution assembly is provided with a plurality of third covers, which are matched with corresponding power distribution assemblies, and each third cover is arranged in one-to-one correspondence with each power distribution assembly.

[0011] In the embodiment, the third cover matched with the corresponding power distribution assembly can be more convenient for independent maintenance of each power distribution assembly, thereby improving the convenience of maintenance and management.

[0012] In one of the embodiments, the third cover has a rim portion, the rim portion is arranged opposite to the second sub-cover, and the rim portion covers the outer periphery of the opening. The box body further comprises a first locking assembly connected between the rim portion and the second sub-cover.

[0013] In the embodiment, the first locking assembly is arranged between the third cover and the second sub-cover of the first cover to realize the fixing and disassembly of the third cover, thereby facilitating the disassembly and installation of the third cover and improving the maintenance efficiency.

[0014] In one of the embodiments, the third cover has a first sub-rim portion and a second sub-rim portion, and the first sub-rim portion and the second sub-rim portion are arranged opposite to each other. The battery device further comprises an adapter assembly connected to the second sub-cover, and the adapter assembly is rotationally connected to the first sub-rim portion of the third cover, so that the third cover can be switched between the position of covering the opening and the position of opening the opening. The box body further comprises a second locking assembly connected between the second sub-rim portion and the second sub-cover of the first cover.

[0015] In the embodiment, the adapter assembly is arranged between the second sub-cover of the first cover and the third cover to realize the flip opening mode of the third cover, so that the opening and closing of the third cover are more convenient. The design of the second locking assembly makes the connection between the third cover and the second sub-cover more reliable, thereby improving the practicability of the product.

[0016] In one of the embodiments, the box further comprises a positioning component connected between the third cover and the second sub-cover, so as to rotate the third cover to a plurality of preset positions relative to the second sub-cover.

[0017] In the embodiment, the positioning component is arranged to control the opening angle of the third cover, and improve the flexibility of the opening angle of the third cover.

[0018] In one of the embodiments, the third cover has a rim portion, and the second sub-cover has a limiting portion adjacent to the opening, the rim portion is inserted into the limiting portion and covers the opening.

[0019] In the embodiment, the third cover and the second sub-cover of the first cover are connected by the insertion and limiting mode, which is beneficial to improve the convenience of installation and disassembly.

[0020] In one of the embodiments, the rim portion comprises a first sub-rim portion and a second sub-rim portion arranged oppositely, the limiting portion is arranged on one side of the opening, and the first sub-rim portion is inserted into the limiting portion; the box further comprises a third locking assembly connected between the second sub-rim portion and the second sub-cover.

[0021] In the embodiment, the third cover and the second sub-cover of the first cover are connected by the insertion and limiting mode on one side and the locking mode on the other side, which can improve the positioning accuracy, is more convenient to operate, is beneficial to reduce the number of third locking assemblies, and is beneficial to reduce the manufacturing cost.

[0022] In one of the embodiments, the rim portion comprises a first sub-rim portion and a second sub-rim portion arranged oppositely, the limiting portion comprises a first limiting portion and a second limiting portion both connected to the first cover, the first limiting portion and the second limiting portion are arranged in parallel and on opposite sides of the opening, the first sub-rim portion is inserted into the first limiting portion, and the second sub-rim portion is inserted into the second limiting portion, so that the third cover can be switched between the position of covering the opening and the position of opening the opening.

[0023] In the embodiment, the second sub-cover and the third cover are connected by the insertion and limiting mode on both sides, which makes the installation and disassembly between the two more convenient, is beneficial to save the arrangement of the locking assembly, reduces the number of components, and reduces the manufacturing cost.

[0024] In one of the embodiments, the box further comprises a constraint portion connected to the second sub-cover, the constraint portion is adjacent to the opening and located at the end of the insertion path of the rim portion, and the third cover abuts against the constraint portion to limit the movement of the third cover towards the constraint portion.

[0025] In the embodiment, the constraint part is arranged to position the third cover body, thereby reducing the probability of misalignment between the third cover body and the opening, and enabling the third cover body to accurately stay at the preset position each time the third cover body is closed, and improving the accuracy of the third cover body.

[0026] In one of the embodiments, the box further comprises a clamping part connected to the second sub-cover body, the clamping part is arranged adjacent to the opening and at the starting end of the insertion path of the edge part, the constraint part is arranged opposite to the clamping part, and the clamping part is connected to the third cover body to limit the movement of the third cover body in the direction away from the constraint part.

[0027] In the embodiment, the clamping part is arranged opposite to the constraint part to form a bidirectional position limitation for the third cover body, the constraint part limits the movement of the cover body towards the end of the insertion path, and the clamping part limits the movement of the cover body towards the starting end of the insertion path, so that the third cover body is locked in the closed position, and the reliability of the connection between the third cover body and the second sub-cover body of the first cover body is improved.

[0028] In one of the embodiments, the clamping part is a flexible structure, and the clamping part can be switched between a clamping position and an unlocking position, the clamping position is configured as a position where the flexible structure protrudes out of the surface of the second sub-cover body, and the unlocking position is configured as a position where the flexible structure is hidden in the first cover body.

[0029] In the embodiment, the flexible clamping structure realizes the operation mode of automatic locking after insertion and quick unlocking after pressing, and the locking and unlocking can be completed without additional tools, which is conducive to improving the efficiency of installation and disassembly.

[0030] In one of the embodiments, in the direction perpendicular to the opening direction of the opening, the projection shape of the power distribution assembly is consistent with the shape of the opening, and the projection area of the power distribution assembly is 1 / 10-1 / 2 of the projection area of the opening.

[0031] In the embodiment, the projection shape of the power distribution assembly is consistent with the shape of the opening, and the projection area of the power distribution assembly is controlled to be 1 / 10-1 / 2 of the projection area of the opening, so that the gap between the side wall of the power distribution assembly and the side wall of the opening can be controlled within a reasonable range, the problem of the increase of the area of the third cover body caused by the excessively large gap is reduced, the problem of the influence of the maintenance operation space caused by the excessively small gap is reduced, and the matching degree of the third cover body and the power distribution assembly is improved, so that the manufacturing cost can be reasonably controlled.

[0032] In one of the embodiments, the box further comprises a structural beam connected to the first cover body or the second cover body and accommodated in the accommodation space, so that the accommodation space is divided into the battery compartment and the power distribution compartment.

[0033] In the embodiment, the structural beam achieves physical isolation and functional partition of the battery monomer assembly and the power distribution assembly, the battery compartment focuses on electrical energy storage, and the power distribution compartment focuses on electrical energy distribution, thereby reducing the influence of battery monomer heating on the electrical performance of the power distribution assembly, reducing the interference of electromagnetic radiation generated by the power distribution assembly on the battery management system, and improving the working stability of the battery device.

[0034] In one of the embodiments, the third cover is made of transparent material.

[0035] In the embodiment, the third cover is made of transparent material, so that the operator can observe the working condition of the power distribution assembly without removing the third cover, which is conducive to reducing the risk of frequent removal of the third cover and ensuring the sealing between the third cover and the first cover.

[0036] In one of the embodiments, the box further comprises a sealing ring, which is arranged around the outer periphery of the open port and connected between the third cover and the second sub-cover.

[0037] In the embodiment, the structure of the sealing ring significantly improves the sealing level of the open port. Through the extrusion deformation of the elastic material, the gap between the third cover and the second sub-cover can be effectively filled, and impurities such as dust, water vapor and oil stains are prevented from entering the box, thereby meeting the use requirements in harsh environments such as outdoor and water. In addition, the sealing ring can also absorb part of the vibration energy, reduce the vibration friction between the third cover and the second sub-cover, and prolong the service life of the cover.

[0038] In one of the embodiments, the battery device further comprises a fourth locking assembly connected between the power distribution assembly and the box.

[0039] In the embodiment, the fourth locking assembly effectively solves the displacement problem of the power distribution assembly during transportation and use. The fourth locking assembly can improve the fixing strength of the power distribution assembly, reduce the faults such as loose wires and poor contact of elements caused by vibration, and improve the electrical connection reliability.

[0040] In a second aspect, the application provides a power utilization device comprising the battery device as described in any one of the above.

[0041] The above description is only a summary of the technical solutions of the application. In order to more clearly understand the technical means of the application, the specific embodiments of the application can be implemented according to the content of the description, and in order to make the above and other purposes, characteristics and advantages of the application more obvious and easy to understand, the following specific embodiments of the application are described. BRIEF DESCRIPTION OF DRAWINGS

[0042] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1 This application provides structural schematic diagrams of vehicles for some embodiments;

[0044] Figure 2 Schematic diagram of the exploded structure of the battery device provided in some embodiments of this application Figure 1 ;

[0045] Figure 3 Schematic diagram of the exploded structure of the battery device provided in some embodiments of this application Figure 2 ;

[0046] Figure 4 This is a schematic diagram of the internal structure of the battery device provided in some embodiments of this application;

[0047] Figure 5 for Figure 4 A schematic diagram of the decomposed structure;

[0048] Figure 6 Schematic diagram of the external structure of the battery device provided in some embodiments of this application Figure 1 ;

[0049] Figure 7 for Figure 6 A magnified view of position A in the image;

[0050] Figure 8 Schematic diagram of the external structure of the battery device provided in some embodiments of this application Figure 2 ;

[0051] Figure 9 for Figure 8 A magnified view of position B in the image. Figure 1 ;

[0052] Figure 10 A schematic diagram of the third cover in the open state in a battery device provided in some embodiments of this application;

[0053] Figure 11 for Figure 8 A magnified view of position B in the image. Figure 2 ;

[0054] Figure 12 Schematic diagram of the external structure of the battery device provided in some embodiments of this application Figure 3 ;

[0055] Figure 13 is a partial enlarged view of the C position in Figure 12

[0056] Figure 14 is a partial enlarged view of the D position in Figure 13

[0057] Figure 15 is a schematic view of relative positions of an open port and a power distribution assembly in a battery device provided by some embodiments of the present application.

[0058] BRIEF DESCRIPTION OF DRAWINGS

[0059] 1000, vehicle; 1100, battery device; 1110, box body; 1111, frame body; 1112, first cover body; 11121, limiting part; 11122, first limiting part; 11123, second limiting part; 11124, first sub-cover body; 11125, second sub-cover body; 1113, second cover body; 1114, third cover body; 11141, edge part; 11142, first sub-edge part; 11143, second sub-edge part; 1115, accommodation space; 1116, battery compartment; 1117, power distribution compartment; 1118, open port; 1119, structural beam; 1120, battery monomer assembly; 1121, battery monomer; 1130, power distribution assembly; 1131, fourth locking assembly; 1140, first locking assembly; 1150, adapter assembly; 1151, positioning part; 1160, second locking assembly; 1170, third locking assembly; 1180, constraint part; 1190, clamping part; 1200, controller; 1300, motor. DETAILED DESCRIPTION

[0060] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as embodiments, but cannot limit the protection scope of the present application.

[0061] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion.

[0062] ​​In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise explicitly specified and limited.

[0063] Reference herein to "embodiments" means that the particular features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily a separate or alternative embodiment to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0064] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after it.

[0065] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two), and similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0066] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the embodiments of the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0067] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0068] With the rapid development of new energy technology, battery devices as the core components of energy storage and supply are widely used in electric vehicles, energy storage systems and other electric devices. The battery device usually includes a battery monomer assembly, a power distribution assembly, and a box for accommodating these components. The power distribution assembly, as the connection hub between the battery monomer assembly and the external circuit, undertakes important functions such as power distribution, detection and protection. The maintenance convenience directly affects the overall use efficiency and reliability of the battery device.

[0069] In related technologies, the box of the battery device usually adopts a whole sealing structure. When the power distribution assembly needs to be repaired, maintained or replaced, the entire box often needs to be disassembled, which leads to complicated operation and requires a lot of time and manpower. Especially for large battery devices, the maintenance efficiency is low. On the other hand, frequent disassembly of the entire box can easily damage the sealing performance of the box, causing impurities such as dust and water vapor to enter the box, affecting the working stability of the battery monomer assembly and the power distribution assembly.

[0070] Therefore, the present application provides a battery device. By setting an open port on the second sub-cover of the first cover of the box and setting a detachable third cover on the open port, the open port is arranged opposite to the power distribution assembly inside the box. When the power distribution assembly needs to be repaired or disassembled, only the third cover needs to be opened to expose and disassemble the power distribution assembly, without the need to disassemble the entire box, which ensures the stability of the overall structure of the box and the battery device and is conducive to improving the maintenance efficiency.

[0071] Specifically, referring to Figure 2 The battery device 1100 provided by the embodiment of the present application includes one or more battery monomer assemblies 1120. The battery device 1100 disclosed by the embodiment of the present application can be used in various electric devices using the battery device 1100 as a power supply or various energy storage devices and energy storage systems using the battery device 1100 as an energy storage element. The electric device can be, but is not limited to, a mobile phone, a portable device, a notebook computer, an electric toy, an electric tool, an electric vehicle, a vehicle 1000, a ship, a spacecraft, etc. The electric toy can include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric plane toy, etc. The spacecraft can include an airplane, a rocket, a space shuttle, a spacecraft, etc.

[0072] The following embodiments take a vehicle 1000 as an example for convenience of description.

[0073] Please refer to Figure 1 , Figure 1A structural schematic diagram of a vehicle 1000 is provided for some embodiments of the present application. The vehicle 1000 can be a fuel automobile, a gas automobile, or a new energy automobile, which can be a pure electric vehicle, a hybrid electric vehicle, or a range extended electric vehicle, etc. The vehicle 1000 is internally provided with a battery apparatus 1100. The battery apparatus 1100 can be arranged at the bottom, head, or tail of the vehicle 1000. The battery apparatus 1100 can be used for power supply of the vehicle 1000, for example, the battery apparatus 1100 can be used as an operating power source of the vehicle 1000. The vehicle 1000 can further include a controller 1200 and a motor 1300, the controller 1200 is used to control the battery apparatus 1100 to supply power to the motor 1300, for example, to meet the power demand of the vehicle 1000 during starting, navigation, and driving.

[0074] In some embodiments of the present application, the battery apparatus 1100 can not only be used as an operating power source of the vehicle 1000, but also be used as a driving power source of the vehicle 1000, to replace or partially replace fuel or natural gas to provide driving power for the vehicle 1000.

[0075] Please refer to Figure 2 Figure 2 A disassembled structural schematic diagram of the battery apparatus 1100 is provided for some embodiments of the present application. The battery apparatus 1100 can be a battery pack. The battery apparatus 1100 includes a box body 1110 and a battery cell assembly 1120. The battery cell assembly 1120 is used to provide voltage and capacity. The box body 1110 forms an accommodation space 1115 therein. The battery cell assembly 1120 is accommodated in the accommodation space 1115 (specifically, a battery compartment 1116). The battery cell assembly 1120 is usually formed by arranging a plurality of battery cells 1121. The plurality of battery cells 1121 are connected in series, in parallel, or in a hybrid manner by bus components. Alternatively, the battery cell assembly 1120 can be a battery cell group or a battery module. The battery module (or the battery cell group) is formed by arranging and fixing a plurality of battery cells 1121 to form an independent module. As an example, the battery module can be formed by binding a plurality of battery cells 1121 by a cable tie. The box body 1110 is used to provide the accommodation space 1115 for the battery cell assembly 1120. The box body 1110 can adopt various structures.

[0076] The battery cell 1121 refers to the smallest unit that constitutes the battery apparatus 1100. Each battery cell 1121 can be a secondary battery cell or a primary battery cell. It can also be a lithium-sulfur battery cell, a sodium-ion battery cell, or a magnesium-ion battery cell, but is not limited thereto. The battery cell 1121 can be in the shape of a cylinder, a flat body, a cuboid, or other shapes, etc. ​

[0077] According to some embodiments of the present application, referring to Figures 2-5 The battery device 1100 according to the embodiments of the present application includes a battery cell assembly 1120, a power distribution assembly 1130, and a box body 1110. The power distribution assembly 1130 is electrically connected to the battery cell assembly 1120. The box body 1110 includes a frame body 1111, a first cover body 1112, a second cover body 1113, and a third cover body 1114. The first cover body 1112 and the second cover body 1113 are oppositely arranged and are both connected to the frame body 1111 to jointly form a containing space 1115. The containing space 1115 includes a battery compartment 1116 and a power distribution compartment 1117. The battery cell assembly 1120 is contained in the battery compartment 1116, and the power distribution assembly 1130 is contained in the power distribution compartment 1117. The first cover body 1112 includes a first sub-cover body 11124 and a second sub-cover body 11125 which are connected to each other. The first sub-cover body 11124 is connected to the frame body 1111 and matches the battery compartment 1116. The second sub-cover body 11125 is connected to the frame body 1111 and matches the power distribution compartment 1117. An open port 1118 is arranged on the second sub-cover body 11125. The open port 1118 is oppositely arranged with the power distribution assembly 1130. The third cover body 1114 is arranged on the open port 1118 and is movably or detachably connected to the second sub-cover body 11125.

[0078] Specifically, the battery cell assembly 1120 includes at least one battery cell 1121. In the case that a plurality of battery cells 1121 are arranged, the plurality of battery cells 1121 can be arranged in a matrix shape.

[0079] The power distribution assembly 1130 is also commonly known as a power distribution box. The power distribution assembly 1130 is a key component in a power system and can also be referred to as a high-voltage box. In the battery device 1100, the power distribution assembly 1130 can distribute the electrical energy in the battery cell assembly 1120 to each high-voltage system of an external power utilization device.

[0080] The power distribution assembly 1130 generally includes a plurality of circuit protection devices, such as relays and fuses. During the operation of the battery device 1100, the fuses and relays often fail in some dangerous situations that threaten the normal operation of the battery device 1100, resulting in failure of the power distribution assembly 1130. Therefore, the power distribution assembly 1130 often needs to be repaired.

[0081] When the battery cell assembly 1120 supplies power to the external power consuming assembly, the battery cell assembly 1120 first needs to be electrically connected with the power distribution assembly 1130. In one possible implementation, the battery device 1100 needs to be provided with a first lead-through member for electrically connecting with the battery cell assembly 1120, so that the power distribution assembly 1130 can be electrically connected and conducted with the battery cell assembly 1120 through the first lead-through member. The first lead-through member can be understood as a plug-in terminal or a pin structure or a socket for electrical connection, and the first lead-through member can also adopt a metal structural member with simple structure and capable of conducting electricity. The first lead-through member is connected to the box body 1110. Specifically, the box body 1110 can be provided with a beam structure or a rib structure inside, and the first lead-through member can be fixedly or detachably connected to the beam structure or the rib structure.

[0082] Correspondingly, in one possible implementation, the power distribution assembly 1130 includes a housing, an electronic system assembly and a second lead-through member. The housing has a receiving cavity, the electronic system assembly is connected to the housing and is received in the receiving cavity, and the second lead-through member is electrically connected to the electronic system assembly. The housing is connected to the box body 1110 and can be plugged into the receiving space 1115 (specifically, the power distribution compartment 1117) through the open port 1118, and the second lead-through member is electrically connected with the first lead-through member. The electronic system assembly is each basic part of the electronic system constituting the power distribution assembly 1130, for example, the electronic system assembly includes a voltage stabilizer, a sensor, an amplifier, a signal processor, a relay, a fuse, a circuit breaker, a memory, a resistor, a capacitor and a wireless module, etc. The second lead-through member is used for electrical connection with the first lead-through member, and the second lead-through member is electrically connected with the electronic system assembly. After the power distribution assembly 1130 is plugged into the receiving space 1115 (specifically, the power distribution compartment 1117), the electronic system assembly can be electrically connected and conducted with the battery cell assembly 1120 through the electrical connection of the first lead-through member and the second lead-through member. The second lead-through member can also adopt a plug-in terminal or a pin structure or a socket for electrical connection, and the second lead-through member can also adopt a metal structural member with simple structure and capable of conducting electricity. Among the first lead-through member and the second lead-through member, one can be a male connector and the other can be a female connector, so that the first lead-through member and the second lead-through member are connected in a plug-in manner. Alternatively, the first lead-through member and the second lead-through member can also be connected in a contact or abutment manner. The second lead-through member is fixedly or detachably connected to the housing. Of course, the first lead-through member and the second lead-through member can also adopt a wire structure.

[0083] For the box 1110, in some examples, the frame 1111 can be understood as a ring-shaped side plate of the box 1110. Taking the box 1110 as a cubic box as an example, the frame 1111 includes four side plates connected in sequence, and the four side plates form a rectangular frame, so that the frame 1111 forms two openings. Then, the first cover 1112 and the second cover 1113 are oppositely arranged and respectively cover the two openings. The first cover 1112 and the second cover 1113 are connected with the frame 1111, so as to form the cubic box 1110. The inside of the box 1110 forms a containing space 1115. The battery cell assembly 1120 and the power distribution assembly 1130 are both contained in the containing space 1115.

[0084] When the battery device 1100 is installed in the vehicle 1000, the box 1110 is usually placed horizontally. The first cover 1112 and the second cover 1113 can both be in a horizontally placed state. Then, the first cover 1112 can be located above the second cover 1113. In this case, the first cover 1112 can be understood as an upper cover of the box 1110, and the second cover 1113 can be understood as a bottom plate of the box 1110. Alternatively, the second cover 1113 can be located above the first cover 1112. In this case, the second cover 1113 can be understood as an upper cover of the box 1110, and the first cover 1112 can be understood as a bottom plate of the box 1110.

[0085] The first cover 1112 is divided into a first sub-cover 11124 and a second sub-cover 11125. The first sub-cover 11124 and the second sub-cover 11125 are fixedly or detachably connected, or the first sub-cover 11124 and the second sub-cover 11125 are integrated. The edges of the first sub-cover 11124 and the second sub-cover 11125 can be connected with the frame 1111 by bolts. The first sub-cover 11124 is connected to the frame 1111 and matches the battery compartment 1116. The first sub-cover 11124, the frame 1111, and the second cover 1113 jointly form the battery compartment 1116. The second sub-cover 11125, the frame 1111, and the second cover 1113 jointly form the power distribution compartment 1117. The power distribution assembly 1130 is fixed in the power distribution compartment 1117. The third cover 1114 is connected to the second sub-cover 11125. The second sub-cover 11125 is provided with an open hole 1118 corresponding to the position of the power distribution assembly 1130. The area of the third cover 1114 only covers the area of the open hole 1118. The area of the third cover 1114 is smaller than the area of the second sub-cover 11125. The remaining area of the second sub-cover 11125 remains closed.

[0086] The power distribution assembly 1130 is arranged opposite to the second sub-cover 11125 of the first cover 1112 in the box 1110, and an open hole 1118 is formed on the second sub-cover 11125, which can serve as an access hole of the power distribution assembly 1130 to the containing space 1115. When the open hole 1118 is in an open state, the power distribution assembly 1130 is in an exposed state, and an operator can directly contact the power distribution assembly 1130 to maintain the power distribution assembly 1130, or disassemble the power distribution assembly 1130 through the open hole 1118, so that the power distribution assembly 1130 can be separated from the box 1110 through the open hole 1118. The open hole 1118 can be understood as a hole structure on the second sub-cover 11125, or the open hole 1118 can be understood as an operation channel on the second sub-cover 11125.

[0087] The third cover 1114 is connected to the second sub-cover 11125 of the first cover 1112 and can be arranged on the open hole 1118 to seal the open hole 1118, so as to reduce the entry of external dust, water vapor, particulate matter and other impurities into the containing space 1115. The third cover 1114 and the second sub-cover 11125 are connected in a movable or detachable manner. The movable connection manner includes at least one of a connection manner in which the third cover 1114 is flipped to open or close the open hole 1118 (i.e., a rotating connection) and a connection manner in which the third cover 1114 slides to open or close the open hole 1118 (i.e., a sliding insertion). For example, the third cover 1114 and the second sub-cover 11125 can be connected by an insertion limiting manner. The second sub-cover 11125 is provided with an insertion slot, and the third cover 1114 is provided with an insertion block. The third cover 1114 is arranged on the open hole 1118, the insertion block is inserted into the insertion slot and can move relative to the insertion slot, so that the third cover 1114 opens and closes the open hole 1118 by sliding. For another example, one side of the third cover 1114 is rotatably connected to the second sub-cover 11125 by a rotating shaft or a hinge, and the third cover 1114 opens or closes the open hole 1118 by rotating.

[0088] The third cover 1114 and the second sub-cover 11125 can also be connected in a detachable manner. For example, the third cover 1114 and the second sub-cover 11125 are detachably connected by a bolt assembly, a buckle assembly, a peg assembly or a magnetic assembly. The third cover 1114 can be fixed to the second sub-cover 11125 by the bolt assembly, the buckle assembly, the peg assembly or the magnetic assembly. Unlocking the bolt assembly, the buckle assembly, the peg assembly or the magnetic assembly can also separate the third cover 1114 from the second sub-cover 11125, so as to realize the fixing and detachability of the third cover 1114 and the second sub-cover 11125.

[0089] The size of the open hole 1118 should be adapted to the size of the power distribution assembly 1130, for example, the outer contour size of the projection of the power distribution assembly in the plane parallel to the plane in which the open hole 1118 is located should be larger than the contour size of the open hole 1118, so that the power distribution assembly 1130 can pass through the open hole 1118; in addition, the outer contour size of the projection of the open hole 1118 should not be too large than the contour size of the open hole 1118, generally, the outer contour shape of the projection of the open hole 1118 is similar to the contour shape of the open hole 1118, the outer contour shape of the projection of the open hole 1118 is offset concentrically expanded compared with the contour shape of the open hole 1118, and the one-sided offset distance should not be greater than 20 mm, which can allow the hand or operating tool of the operator to extend in and out.

[0090] In the embodiment, by opening the open hole 1118 on the second sub-cover 11125 of the first cover 1112 of the box body 1110, and setting the movable third cover 1114 on the open hole 1118, when the power distribution assembly 1130 needs to be exposed or disassembled, only the third cover 1114 needs to be opened or disassembled, so that the power distribution assembly 1130 can be exposed for maintenance or disassembly, etc., without the need to disassemble the first cover 1112, the second sub-cover 11125 and the entire box body 1110, which guarantees the integrity of the box body 1110, reduces the frequency of disassembling the entire box body 1110, and makes the disassembly and installation of the power distribution assembly 1130 and the box body 1110 more convenient, which is conducive to improving the efficiency of maintenance; in addition, since only the local third cover 1114 is opened, the other areas inside the box body 1110 remain closed, which can effectively reduce the risk of dust, water vapor and other impurities entering the accommodation space 1115 and affecting the working stability of the battery monomer assembly 1120, and guarantee the sealing performance of the entire box body 1110.

[0091] In some embodiments, referring to Figures 3-5 It is shown that the power distribution assembly 1130 is provided with a plurality of third covers 1114 to match the corresponding power distribution assembly 1130, and each third cover 1114 is provided one-to-one with each power distribution assembly 1130.

[0092] Generally, the battery device 1100 needs to set a plurality of independent power distribution assemblies 1130 according to functional requirements, and each power distribution assembly 1130 bears different power distribution functions, for example, a main power distribution assembly 1130, an auxiliary power distribution assembly 1130 and a standby power distribution assembly 1130 can be set, and each power distribution assembly 1130 is independent of each other and is electrically connected to the battery monomer assembly 1120 through an independent wire structure or a lead piece, so as to ensure the independent operation of each power distribution circuit.

[0093] Matching multiple power distribution components 1130, an independent opening 1118 is provided on the second sub-cover 11125 corresponding to the position of each power distribution component 1130. The size and shape of each opening 1118 are adapted to the corresponding power distribution component 1130, ensuring that each power distribution component 1130 can be independently maintained through the corresponding opening 1118. In addition, multiple third covers 1114 are provided, the size of each third cover 1114 matching the size of the corresponding opening 1118. Each third cover 1114 is placed over the corresponding opening 1118 and is connected to the second sub-cover 11125 by a movable or detachable connection. For example, the third cover 1114 and the second sub-cover 11125 are connected by bolts, snap-fit ​​connections, sliding plug-ins, or rotational connections.

[0094] The matching design of multiple power distribution components 1130 and multiple third covers 1114 enables targeted maintenance of the power distribution components 1130. When a power distribution component 1130 malfunctions or requires maintenance, only the corresponding third cover 1114 needs to be opened or removed, without needing to operate on the areas where other normally operating power distribution components 1130 are located, reducing unnecessary disassembly procedures and further improving maintenance efficiency. In addition, each opening 1118 corresponds to only one power distribution component 1130, making the scope of each maintenance operation more precise, reducing interference with adjacent power distribution components 1130, and lowering the risk of misoperation during maintenance. Furthermore, the design of multiple independent third covers 1114 also facilitates the differentiation of the maintenance status of different power distribution components 1130, improving the convenience of maintenance management.

[0095] In this embodiment, the method of matching one third cover 1114 with one corresponding power distribution component 1130 makes it easier to maintain each power distribution component 1130 independently, thus improving the convenience of maintenance and management.

[0096] In some embodiments, refer to Figure 6 and Figure 7 As shown, the third cover 1114 has an edge portion 11141, which is disposed opposite to the second sub-cover 11125, and the second sub-cover 11125 covers the outer periphery of the opening 1118; the box body 1110 also includes a first locking assembly 1140, which is connected between the edge portion 11141 and the second sub-cover 11125.

[0097] Specifically, the edge of the third cover body 1114 is integrally formed with a rim 11141, which is arranged along the circumference of the third cover body 1114. When the third cover body 1114 is covered on the open hole 1118, the rim 11141 is attached to the surface of the second sub-cover body 11125 on the circumference of the open hole 1118. The second sub-cover body 11125 on the circumference of the open hole 1118 supports the rim 11141, thereby increasing the contact area between the third cover body 1114 and the second sub-cover body 11125.

[0098] The first locking assembly 1140 is used to detachably connect the third cover body 1114 and the second sub-cover body 11125. The first locking assembly 1140 can adopt a bolt locking structure, a buckle locking structure, or a zipper locking structure, etc. If the bolt locking structure is adopted, bolt holes (or through holes) are formed on the rim 11141 and the second sub-cover body 11125 on the circumference of the open hole 1118. When the third cover body 1114 is covered, the bolts pass through the bolt holes on the rim 11141 and the second sub-cover body 11125 in sequence, and the fixed connection between the two is achieved by fastening with nuts. If the buckle locking structure is adopted, an elastic buckle is arranged on the rim 11141, and a buckle slot is arranged on the second sub-cover body 11125. When the third cover body 1114 is covered, the elastic buckle is locked in the buckle slot to achieve locking and fixing. If the zipper locking structure is adopted, the fixed end of the zipper is installed on the second sub-cover body 11125, and the movable end is installed on the rim 11141. After covering, the movable end is connected with the fixed end, and the fixing is achieved by buckling the zipper.

[0099] To further improve the sealing performance, a sealing gasket or a sealing rubber strip can be arranged between the attached surface of the rim 11141 and the second sub-cover body 11125. The sealing gasket or the sealing rubber strip is arranged along the circumference of the open hole 1118. After the first locking assembly 1140 is locked and fixed, the sealing gasket or the sealing rubber strip is compressed to form a reliable sealing surface.

[0100] The arrangement of the rim 11141 increases the contact area between the third cover body 1114 and the second sub-cover body 11125, making the connection between the two more stable, and also providing installation space for the sealing structure.

[0101] The arrangement of the first locking assembly 1140 achieves reliable fixing of the third cover body 1114 and the second sub-cover body 11125, effectively reducing the risk of loosening or falling off of the third cover body 1114 due to vibration and other factors during transportation or use, and ensuring the sealing performance of the box body 1110. In addition, the detachable design of the first locking assembly 1140 also ensures the convenient opening of the third cover body 1114, taking into account the reliability of the connection and the convenience of maintenance.

[0102] The sealing gasket or sealing strip further improves the sealing level at the open port 1118, effectively prevents impurities such as dust and water vapor from entering the inside of the box body 1110, and prolongs the service life of the internal components.

[0103] In the embodiment, the third cover body 1114 and the second sub-cover body 11125 are fixed and detached through the first locking assembly 1140, facilitating the convenient detachment and installation of the third cover body 1114 and improving the maintenance efficiency.

[0104] In some embodiments, as shown in Figs. 11 and 12, the third cover body 1114 has a first sub-edge portion 11142 and a second sub-edge portion 11143, and the first sub-edge portion 11142 and the second sub-edge portion 11143 are oppositely arranged. Figure 8 and Figure 9 The battery device 1100 further includes an adapter assembly 1150 connected to the second sub-cover body 11125, and the adapter assembly 1150 is rotationally connected to the first sub-edge portion 11142 of the third cover body 1114, so that the third cover body 1114 can be switched between the position of covering the open port 1118 and the position of opening the open port 1118; and the box body 1110 further includes a second locking assembly 1160 connected between the second sub-edge portion 11143 and the second sub-cover body 11125.

[0105] Specifically, the third cover body 1114 is provided with an edge portion 11141 at the edge thereof, and the edge portion 11141 is divided into the first sub-edge portion 11142 and the second sub-edge portion 11143 oppositely arranged, and the first sub-edge portion 11142 and the second sub-edge portion 11143 are respectively located at the opposite two side edges of the third cover body 1114.

[0106] The battery device 1100 further includes an adapter assembly 1150, which can adopt a rotating structure such as a hinge, a hinge or a rotating shaft, and a fixed end (or a fixed portion) of the adapter assembly 1150 is connected to the second sub-cover body 11125 by means of a bolt or welding, and the position of the adapter assembly 1150 corresponds to the first sub-edge portion 11142 of the third cover body 1114. The movable end (or the movable portion) of the adapter assembly 1150 is fixedly connected to the first sub-edge portion 11142 of the third cover body 1114, and the movable end can rotate relative to the fixed end about the rotating axis, so that the third cover body 1114 can rotate about the rotating axis of the adapter assembly 1150, thereby freely switching between the closed position of covering the open port 1118 and the open position of opening the open port 1118. The rotating angle of the third cover body 1114 can be any value between 0° and 180°.

[0107] The box body 1110 further comprises a second locking assembly 1160 arranged between the second sub-edge portion 11143 of the third cover body 1114 and the second sub-cover body 11125. The second locking assembly 1160 can adopt a structure such as a snap locking, a buckle locking or a latch locking. When the third cover body 1114 is rotated to a position closing the opening 1118, the second sub-edge portion 11143 and the second sub-cover body 11125 are fixedly connected through the second locking assembly 1160, so as to realize the locking of the third cover body 1114. When it is needed to open the opening 1118, the locking of the second locking assembly 1160 is released, and the third cover body 1114 can be rotated to an opening position around the rotating assembly 1150.

[0108] In order to reduce the risk of collision between the third cover body 1114 and the second sub-cover body 11125 or other components during rotation, a limiting structure can be arranged at the rotating position of the rotating assembly 1150 to limit the maximum rotation angle of the third cover body 1114. For example, a protruding stop block structure can be arranged on the second sub-cover body 11125. When the third cover body 1114 is flipped to the maximum rotation angle, the stop block structure can abut against the third cover body 1114, thereby limiting the rotation of the third cover body 1114, and limiting the third cover body 1114.

[0109] The rotating connection design between the rotating assembly 1150 and the first sub-edge portion 11142 enables the third cover body 1114 to rotate around a fixed axis to open and close, without the need to completely disassemble the third cover body 1114 from the second sub-cover body 11125, thereby reducing the risk of loss or damage of the cover body after disassembly, and simplifying the operation process of opening and closing.

[0110] The arrangement of the second locking assembly 1160 between the second sub-edge portion 11143 and the second sub-cover body 11125 ensures the reliable fixation of the third cover body 1114 when closed, and guarantees the sealing performance. The arrangement of the limiting structure can effectively protect the third cover body 1114 and the surrounding components, and reduce the collision damage during rotation.

[0111] In the present embodiment, the rotating assembly 1150 is arranged between the second sub-cover body 11125 and the third cover body 1114, thereby realizing the flipping opening mode of the third cover body 1114, making the opening and closing of the third cover body 1114 more convenient, and the design of the second locking assembly 1160 makes the connection between the third cover body 1114 and the second sub-cover body 11125 more reliable, thereby improving the practicability of the product.

[0112] In some embodiments, reference is made to Figure 10As shown, the box body 1110 further comprises a positioning component 1151 connected between the third cover body 1114 and the second sub-cover body 11125, so as to rotate the third cover body 1114 to a plurality of preset positions relative to the relatively open opening 1118.

[0113] On the basis of the adapter assembly 1150, the box body 1110 further comprises a positioning component 1151 connected between the third cover body 1114 and the second sub-cover body 11125, so as to realize multi-position positioning of the third cover body 1114 during opening.

[0114] Specifically, the positioning component 1151 can adopt various structural forms, for example, the positioning component 1151 can adopt a damping rotating shaft structure, integrating the damping rotating shaft at the rotating position of the adapter assembly 1150, and realizing positioning of the third cover body 1114 at any rotating angle through the damping force of the damping rotating shaft; after the operator rotates the third cover body 1114 to a certain angle, the damping force can overcome the gravity of the third cover body 1114 to make it stay stably; the positioning component 1151 can also adopt a structure of positioning pin and positioning hole cooperation, setting a positioning pin on the movable end of the adapter assembly 1150 or the first sub-edge portion 11142 of the third cover body 1114, and setting a positioning hole corresponding to the plurality of preset opening positions of the third cover body 1114 on the second sub-cover body 11125, when the third cover body 1114 is rotated to a preset position, the positioning pin is inserted into the corresponding positioning hole to realize positioning; the positioning component 1151 can also adopt a pawl-ratchet structure, setting a ratchet on the fixed end of the adapter assembly 1150, and setting a pawl cooperating with the ratchet on the movable end, the pawl is engaged with the ratchet under the action of the elastic member, when the third cover body 1114 is rotated, the pawl slides along the ratchet, and after being rotated to a preset position, the pawl is engaged with the corresponding ratchet tooth groove to realize positioning, and pressing the pawl can release the positioning.

[0115] Among them, the preset positions can be set according to the needs of maintenance operation, for example, at the preset positions, the third cover body 1114 is flipped by a preset angle from the initial closed position, and the preset angle can be set to 30°, 60°, 90° and the like, so as to meet the needs of operation space in different maintenance scenarios.

[0116] The setting of the positioning component 1151 makes the third cover body 1114 able to stay stably at a plurality of preset opening positions, the operator can select a suitable opening angle according to the specific needs of maintenance operation, without the need for additional use of supporting tools to support the third cover body 1114, freeing the operator's hands, facilitating maintenance operations such as wiring, detection, and replacement of components, and improving the convenience and efficiency of maintenance.

[0117] The third cover body 1114 can be set at different preset positions to adapt to different maintenance scenarios, for example, a small opening angle can be used for simple inspection observation, and a large opening angle can be used for complex component replacement operation, thereby enhancing the applicability of the product. In addition, the positioning of the positioning component 1151 also reduces the risk of interference or collision damage to the operator caused by accidental rotation of the third cover body 1114 during opening, thereby improving the safety of the maintenance process.

[0118] In the embodiment, by arranging the positioning component 1151, the opening angle of the third cover body 1114 can be controlled, and the flexibility of the opening angle of the third cover body 1114 is improved.

[0119] In some embodiments, as shown in Figures 11-14 The third cover body 1114 and the second sub-cover body 11125 are movably connected in a plug-in manner. The third cover body 1114 has a rim portion 11141, and the second sub-cover body 11125 has a limiting portion 11121 adjacent to the opening 1118. The rim portion 11141 is plugged into the limiting portion 11121 and covers the opening 1118.

[0120] Specifically, the third cover body 1114 is a sealing component of the opening 1118, and the edge of the third cover body 1114 is integrally formed with a rim portion 11141 extending in the circumferential direction. The thickness of the rim portion 11141 can be consistent with the thickness of the main body of the third cover body 1114, and the flatness error of the rim portion 11141 is controlled within a small range to ensure close fitting with the second sub-cover body 11125.

[0121] On the second sub-cover body 11125 of the first cover body 1112, a limiting portion 11121 is arranged at a side position corresponding to the opening 1118. For example, the limiting portion 11121 can adopt a groove structure integrally formed with the second sub-cover body 11125. The cross-sectional shape of the groove structure matches the cross-sectional shape of the rim portion 11141 (such as a rectangle, an L shape, etc.), and the depth of the groove structure is slightly greater than the thickness of the rim portion 11141, so that the rim portion 11141 can be smoothly inserted into the groove structure. The groove structure (i.e., the limiting portion 11121) extends linearly along one side or both sides of the opening 1118. When the third cover body 1114 covers the opening 1118, the rim portion 11141 can be inserted into the groove structure of the limiting portion 11121, thereby achieving plug-in limiting of the third cover body 1114 relative to the second sub-cover body 11125. At this time, the inner surface of the third cover body 1114 can be flush with the edge of the opening 1118 and accurately cover the opening 1118.

[0122] To enhance connection reliability, the mating gap between the edge portion 11141 and the limiting portion 11121 is controlled within a reasonable range. For example, the mating gap between the edge portion 11141 and the limiting portion 11121 is greater than 0 mm and less than 2 mm, which ensures smooth insertion and prevents the cover from shaking. In addition, sealant can be applied to the mating surfaces of the edge portion 11141 and the limiting portion 11121 to further improve the sealing performance.

[0123] In this example, the third cover 1114 can be quickly positioned during installation through the interlocking of the edge portion 11141 and the limiting portion 11121, improving installation efficiency. Furthermore, the wrapping effect of the limiting portion 11121 on the edge portion 11141 increases the contact area between the third cover 1114 and the second sub-cover 11125, enhancing the vibration resistance of the third cover 1114. Under vibration conditions, the displacement of the third cover 1114 is kept to a minimum, reducing the risk of misalignment of the sealing surface due to vibration. Additionally, the interlocking mechanism allows the third cover 1114 to be easily removed by simply pulling it out along the interlocking direction, making operation convenient. Moreover, the limiting portion 11121 protects the third cover 1114, reducing edge damage and extending its service life.

[0124] In this embodiment, the third cover 1114 and the second sub-cover 11125 are connected by a plug-in limiting method, which helps to improve the convenience of installation and disassembly.

[0125] In some embodiments, refer to Figure 11 As shown, the edge portion 11141 includes a first sub-edge portion 11142 and a second sub-edge portion 11143 disposed opposite to each other, and a limiting portion 11121 is disposed on one side of the opening 1118. The first sub-edge portion 11142 and the limiting portion 11121 are inserted into each other. The housing 1110 also includes a third locking assembly 1170, which is connected between the second sub-edge portion 11143 and the second sub-cover 11125.

[0126] Specifically, the edge portion 11141 of the third cover 1114 includes a first sub-edge portion 11142 and a second sub-edge portion 11143 disposed opposite to each other. The first sub-edge portion 11142 and the second sub-edge portion 11143 are respectively located at the edges of two opposite sides of the third cover 1114. For example, if the direction opposite to the first sub-edge portion 11142 and the second sub-edge portion 11143 is set as the width direction, then the first sub-edge portion 11142 and the second sub-edge portion 11143 both extend along the length direction of the third cover 1114. The length of the first sub-edge portion 11142 and the second sub-edge portion 11143 can be the same as the length of the corresponding side, and the thickness of the first sub-edge portion 11142 and the second sub-edge portion 11143 can be the same as the thickness of the main body of the third cover 1114.

[0127] In some examples, referring to Figure 11 As shown, the limiting portion 11121 can adopt a protruding structure, which is arranged on one side of the open port 1118 of the second sub-cover body 11125. The cross section of the protruding structure is L-shaped. The limiting portion 11121 forms a clamping groove matched with the first sub-edge portion 11142. The opening direction of the clamping groove is toward the open port 1118, and the extension direction of the clamping groove is along the length direction. The first sub-edge portion 11142 can be inserted into the clamping groove along the length direction, thereby achieving one-side insertion positioning. The width of the clamping groove matches the width of the first sub-edge portion 11142, so as to ensure that the first sub-edge portion 11142 is completely limited after being inserted, thereby reducing the risk of shaking of the third cover body 1114.

[0128] The box body 1110 further includes a third locking assembly 1170, which can adopt a bolt locking structure, a buckle locking structure, a zipper locking structure, etc. For example, the third locking assembly 1170 adopts a bolt locking structure. A through hole (or a bolt hole) is arranged on the corresponding position of the second sub-edge portion 11143 and the second sub-cover body 11125. When the third cover body 1114 is covered, the bolt passes through the bolt holes on the second sub-edge portion 11143 and the second sub-cover body 11125 in sequence, and the fixed connection between the two is achieved through the fastening of the nut. For example, the third locking assembly 1170 adopts a latch structure. The latch structure can include a fixed seat and a latch. The fixed seat is fixed on the second sub-cover body 11125 at a position corresponding to the second sub-edge portion 11143 through a bolt. The latch is retractable relative to the fixed seat. A latch hole is arranged on the second sub-edge portion 11143. When the third cover body 1114 is positioned by the insertion of the first sub-edge portion 11142 and the limiting portion 11121, the second sub-edge portion 11143 is attached to the surface of the second sub-cover body 11125. At this time, the latch is pushed into the latch hole, thereby achieving the fixed connection between the second sub-edge portion 11143 and the second sub-cover body 11125. The latch is pulled out to release the locking, which is convenient to operate.

[0129] This example employs a single-sided plug-in design, which reduces plugging resistance compared to a double-sided plug-in design, making the assembly and disassembly of the third cover 1114 easier, especially suitable for scenarios with larger third cover 1114 sizes. The plugging of the first sub-edge portion 11142 with the limiting portion 11121 provides initial positioning, offering a positioning reference for the rapid locking of the third locking assembly 1170. Furthermore, the combination of single-sided plugging and locking on the other side balances positioning accuracy and connection reliability. The plugging of the first sub-edge portion 11142 restricts the displacement of the third cover 1114 perpendicular to the plugging direction, while the third locking assembly 1170 restricts the flipping and detachment of the third cover 1114, thus enhancing the fixing strength of the third cover 1114. In addition, this design reduces the number of third locking assemblies 1170, facilitating future maintenance and replacement, improving maintenance efficiency, and reducing manufacturing costs.

[0130] In this embodiment, the third cover 1114 and the second sub-cover 11125 are connected by a one-sided insertion limit and a other-sided locking limit, which can improve the positioning accuracy, make the operation more convenient, and reduce the number of third locking components 1170 used, thus reducing manufacturing costs.

[0131] In some embodiments, refer to Figures 12-14 As shown, the edge portion 11141 includes a first sub-edge portion 11142 and a second sub-edge portion 11143 disposed opposite to each other. The limiting portion 11121 includes a first limiting portion 11122 and a second limiting portion 11123 both connected to the second sub-cover 11125. The first limiting portion 11122 and the second limiting portion 11123 are disposed parallel to each other and are disposed on opposite sides of the opening 1118. The first sub-edge portion 11142 is inserted into the first limiting portion 11122, and the second sub-edge portion 11143 is inserted into the second limiting portion, so that the third cover 1114 can switch between the position of covering the opening 1118 and the position of opening the opening 1118.

[0132] Specifically, the edge portion 11141 of the third cover 1114 is divided into a first sub-edge portion 11142 and a second sub-edge portion 11143 arranged opposite to each other. The two are located at the edges of two parallel opposite sides of the third cover 1114 and extend along the length direction of the third cover 1114. The cross-sectional shape of the first sub-edge portion 11142 and the second sub-edge portion 11143 can both be rectangular, and the surface is polished to reduce sliding resistance.

[0133] The limiting portion 11121 includes a first limiting portion 11122 and a second limiting portion 11123, which are fixed or detachable or integrally formed on the second cover body 11125, are parallel to each other, and are respectively arranged on two opposite sides of the opening 1118. The lengths of the first limiting portion 11122 and the second limiting portion 11123 can be greater than the length of the third cover body 1114, so as to form a track for the third cover body 1114 to slide on the first limiting portion 11122 and the second limiting portion 11123. For example, a U-shaped groove structure can be arranged on the first limiting portion 11122 and the second limiting portion 11123, which extends along the length direction of the first limiting portion 11122 and the second limiting portion 11123. The groove depth direction (or opening direction) of the U-shaped groove is perpendicular to the opening direction of the opening 1118. The groove width of the U-shaped groove matches the thickness of the first sub-edge portion 11142 and the second sub-edge portion 11143, and the groove depth of the U-shaped groove is slightly greater than the width of the first sub-edge portion 11142 and the second sub-edge portion 11143. The first sub-edge portion 11142 is inserted into the U-shaped groove of the first limiting portion 11122, and the second sub-edge portion 11143 is inserted into the U-shaped groove of the second limiting portion 11123, so that the third cover body 1114 can slide along the length direction of the first limiting portion 11122 and the second limiting portion 11123, thereby switching the third cover body 1114 between the closed position of covering the opening 1118 and the open position of completely exposing the opening 1118.

[0134] To improve the sliding smoothness, lubricating grease can be applied to the inner wall of the U-shaped groove, and a buffer block is arranged at each end of the first limiting portion 11122 and the second limiting portion 11123, so as to reduce the risk of collision when the third cover body 1114 slides to the limit position. In addition, a push-pull handle can be arranged on the outer surface of the third cover body 1114, which is convenient for the operator to push the cover body to slide.

[0135] In this example, the design of the first limiting portion 11122 and the second limiting portion 11123 arranged in parallel on both sides makes the two sides of the opening 1118 of the second cover body 11125 form stable sliding tracks, so that the sliding process of the third cover body 1114 is more stable, which is beneficial to reduce the jamming problem caused by single-side sliding, and a single person can easily push it.

[0136] The plug-in cooperation of the two sub-edge portions 11141 and the limiting portion 11121 makes the third cover body 1114 always keep centered with the opening 1118 during the sliding process. After the third cover body 1114 closes the opening 1118, the fitting error of the sealing surface is smaller, and the sealing performance is excellent.

[0137] In addition, the sliding opening and closing manner does not need to disassemble the third cover body 1114 to expose the opening 1118, thereby reducing the storage and loss problems after disassembling the cover body, and is particularly suitable for installation scenes with small space. In addition, the structure design of the bilateral limiting part improves the impact resistance of the third cover body 1114. When subjected to an impact force perpendicular to the surface of the third cover body 1114, the first limiting part 11122 and the second limiting part 11123 on both sides can jointly bear the load, thereby reducing the risk of deformation and damage of the third cover body 1114. Furthermore, the two-sided plug-in limiting manner does not need to set a locking assembly, which is beneficial to reduce the component composition and reduce the production cost.

[0138] In the embodiment, the two-sided plug-in connection manner between the second sub-cover body 11125 and the third cover body 1114 makes the installation and disassembly between the two more convenient, and is beneficial to save the setting of the locking assembly, thereby reducing the number of components and reducing the manufacturing cost.

[0139] In some embodiments, as shown in Figure 9 and Figure 11 , the box body 1110 further comprises a constraint part 1180 connected to the second sub-cover body 11125. The constraint part 1180 is adjacent to the opening 1118 and located at the end of the plug-in path of the edge part 11141. The third cover body 1114 abuts against the constraint part 1180 to limit the movement of the third cover body 1114 towards the constraint part 1180.

[0140] Specifically, the constraint part 1180 is used to limit the third cover body 1114 after covering the opening 1118, and is used to limit the movement of the third cover body 1114 relative to the second sub-cover body 11125 in the plug-in direction. That is, when the third cover body 1114 moves along the plug-in path to cover the opening 1118, the constraint part 1180 can abut against the third cover body 1114 at the end of the plug-in path.

[0141] The constraint part 1180 can adopt a stop block structure which is detachably connected to the side of the second sub-cover body 11125 through a bolt and located at the end of the plug-in path of the edge part 11141. The height of the constraint part 1180 can be higher than the height of the limiting part 11121. The side surface of the constraint part 1180 close to the edge part 11141 is subjected to milling treatment to ensure flatness. The above-mentioned surface should be perpendicular to the plug-in direction of the edge part 11141.

[0142] When the third cover 1114 is inserted along the limiting part 11121 via the edge part 11141, the end of the edge part 11141 will gradually approach the restraint part 1180. When the third cover 1114 slides to the position that completely covers the opening 1118, the end of the edge part 11141 is in close contact with the surface of the restraint part 1180. At this time, the third cover 1114 cannot continue to move toward the restraint part 1180, thus limiting the insertion stroke.

[0143] The dimensions of the constraint portion 1180 and the edge portion 11141 can be matched to ensure that the contact between the edge portion 11141 and the constraint portion 1180 is a surface contact, thereby reducing stress concentration. To protect the edge portion 11141 and the constraint portion 1180, a cushioning rubber pad can be attached to the contact surface of the edge portion 11141 and the constraint portion 1180.

[0144] In this embodiment, the constraint part 1180 can position the third cover 1114, reduce the probability of misalignment between the third cover 1114 and the opening 1118, and ensure that the third cover 1114 can accurately stop at the preset position each time it is closed, thereby improving the accuracy of the third cover closure.

[0145] In some embodiments, refer to Figure 9 and Figure 11 As shown, the housing 1110 also includes a snap-fit ​​portion 1190 connected to the second sub-cover 11125. The snap-fit ​​portion 1190 is adjacent to the opening 1118 and located at the beginning of the insertion path of the edge portion 11141. The restraint portion 1180 is disposed opposite to the snap-fit ​​portion 1190. The snap-fit ​​portion 1190 is connected to the third cover 1114 to restrict the third cover 1114 from moving away from the restraint portion 1180.

[0146] Specifically, the locking part 1190 is used to limit the third cover 1114 in a direction opposite to the insertion direction after the third cover 1114 is closed on the opening 1118, so that the third cover 1114 cannot be detached from the opening 1118. It can be seen that the locking part 1190 and the restraining part 1180 are respectively disposed opposite to each other on both sides of the opening 1118. The locking part 1190 is located at the beginning of the insertion path of the edge part 11141. In the length direction of the third cover 1114 (or in the length direction of the edge body, or in the insertion direction), the third cover 1114 is limited between the locking part 1190 and the restraining part 1180.

[0147] For example, the latching part 1190 adopts an elastic snap-fit ​​structure, consisting of a fixing seat, a spring, and a latch. The fixing seat is welded and fixed to the side of the opening 1118 on the second sub-cover 11125, and is located at the beginning of the insertion path of the edge part 11141, opposite to the end constraint part 1180. The latch is connected to the fixing seat by the spring and can elastically extend and retract relative to the fixing seat. The front end of the latch has an inclined guide surface to facilitate the insertion of the edge part 11141. A latching groove is formed on the edge part 11141 of the third cover 1114 at a position corresponding to the latching part 1190, and the shape of the latching groove matches the shape of the front end of the latch. When the third cover 1114 slides along the insertion path, the front end of the edge portion 11141 contacts the guide surface of the claw, pushing the claw to compress the spring and retract backward. When the edge portion 11141 slides to its end and abuts against the constraint portion 1180, the locking groove is exactly aligned with the claw. The spring returns to its original position, pushing the claw into the locking groove, thus connecting the locking portion 1190 and the third cover 1114. Pressing the end of the claw compresses the spring, causing the claw to disengage from the locking groove and releasing the locking limit. To improve the reliability of the locking, the fit between the claw and the locking groove can be an interference fit, and anti-slip textures can be provided on the surface of the claw to increase the friction after locking.

[0148] In this embodiment, the snap-fit ​​portion 1190 and the constraint portion 1180 are disposed opposite to each other to form a bidirectional limiting of the third cover 1114. The constraint portion 1180 restricts the cover from moving toward the end of the insertion path, and the snap-fit ​​portion 1190 restricts the cover from moving toward the beginning of the insertion path, so that the third cover 1114 is locked in the closed position, thereby improving the reliability of the connection between the third cover 1114 and the second sub-cover 11125.

[0149] In some embodiments, refer to Figure 11 As shown, the latching part 1190 is an elastic telescopic structure. The latching part 1190 can switch between a latching position and an unlocking position. The latching position is configured to extend the elastic telescopic structure out of the surface of the second sub-cover 11125, and the unlocking position is configured to hide the elastic telescopic structure inside the second sub-cover 11125.

[0150] Specifically, the clamping portion 1190 adopts an elastic telescopic structure, and the clamping portion 1190 can be integrally arranged in the interior of the second sub-cover body 11125. For example, the clamping portion 1190 includes a fixed seat, a telescopic clamping jaw and a return spring. The fixed seat is a hollow cavity structure, and the fixed seat can be fixed in the interior of the second sub-cover body 11125 at a position corresponding to the first end of the insertion path of the open port 1118. An opening is formed in the side wall of the fixed seat for the clamping jaw to extend out. The telescopic clamping jaw is wedge-shaped, with one end extending out of the opening of the fixed seat and the other end connected to the inner wall of the fixed seat through the return spring. The top of the extending end of the telescopic clamping jaw is provided with an inclined guide surface, and the bottom is a horizontal clamping surface. The clamping portion 1190 has two working positions. When no external force is applied, the return spring is in a natural elongation state, pushing the telescopic clamping jaw to extend out of the surface of the second sub-cover body 11125, and the telescopic clamping jaw is connected to the edge portion 11141 of the third cover body 1114. At this time, it is in the clamping position. When the telescopic clamping jaw is pressed into the fixed seat, the return spring is compressed, and the telescopic clamping jaw is completely hidden in the interior of the second sub-cover body 11125. At this time, it is in the unlocking position. During the sliding of the third cover body 1114 along the insertion path to the closed position, the edge portion 11141 presses the inclined guide surface of the telescopic clamping jaw, so that the telescopic clamping jaw is retracted and the spring is compressed. When the edge portion 11141 passes the telescopic clamping jaw, the spring returns to push the telescopic clamping jaw to protrude on one side of the edge portion 11141 and abut against the side portion of the edge portion 11141, so as to realize clamping and fixing. When unlocking is needed, the telescopic clamping jaw is retracted to the unlocking position by pressing, so as to push the third cover body 1114 to slide and open.

[0151] In the embodiment, the elastic telescopic clamping structure realizes the operation mode of automatic locking after insertion and quick unlocking after pressing, and the locking and unlocking can be completed without additional tools, which is beneficial to improving the efficiency of installation and disassembly. The design that the clamping portion 1190 is hidden in the interior of the second sub-cover body 11125 reduces the risk of clamping failure caused by external collision, and at the same time, the surface of the second sub-cover body 11125 remains flat, improving the structural beauty.

[0152] In some embodiments, in the direction perpendicular to the opening direction of the open port 1118, the projection shape of the power distribution assembly 1130 is consistent with the shape of the open port 1118, and the projection area of the power distribution assembly 1130 is 1 / 10-1 / 2 of the projection area of the open port 1118.

[0153] Specifically, in the direction perpendicular to the opening direction of the opening 1118 (i.e., the thickness direction of the first cover 1112 or the second sub-cover 11125), the projection shape of the power distribution assembly 1130 is completely consistent with the shape of the opening 1118. If the power distribution assembly 1130 is a cuboid structure, the opening 1118 is set as a corresponding rectangle. If the power distribution assembly 1130 is a circular structure, the opening 1118 is set as a corresponding circle, so as to ensure that the maintenance operation area of the power distribution assembly 1130 can be fully covered through the opening 1118.

[0154] The projection area of the power distribution assembly 1130 can be controlled within the range of 1 / 10-1 / 2 of the projection area of the opening 1118, and is specifically selected according to the size of the power distribution assembly 1130 and the maintenance operation requirement. For a small power distribution assembly 1130 (such as only containing busbars and fuses), the projection area can be set as 1 / 10 of the opening 1118, and only wiring and detection operations need to be performed through the opening 1118. For a medium power distribution assembly 1130 (containing busbars, sensors, relays, etc.), the projection area is set as 1 / 2 of the opening 1118, which can meet the operation space requirement of element replacement and fault maintenance.

[0155] In the embodiment, as shown in Figure 15 , the projection shape of the power distribution assembly 1130 is consistent with the shape of the opening 1118, and the projection area of the power distribution assembly 1130 is controlled within the range of 1 / 10-1 / 2 of the projection area of the opening 1118, so as to control the gap L between the side wall of the power distribution assembly 1130 and the side wall of the opening 1118 within a reasonable range, reduce the problem of the area of the third cover 1114 increasing due to the gap being too large, and also reduce the problem of the maintenance operation space being affected due to the gap being too small, thereby improving the matching degree of the third cover 1114 and the power distribution assembly 1130, so as to achieve the effect of reasonably controlling the manufacturing cost.

[0156] In some embodiments, as shown in Figure 2 , the box body 1110 further includes a structural beam 1119 connected to the first cover 1112 (the first sub-cover 11124 or the second sub-cover 11125) or the second cover 1113 and accommodated in the accommodation space 1115, so as to divide the accommodation space 1115 into the battery compartment 1116 and the power distribution compartment 1117. The first sub-cover 11124, the frame body 1111, the second cover 1113 and the structural beam 1119 are connected and collectively surrounded to form the battery compartment 1116. The second sub-cover 11125, the frame body 1111, the second cover 1113 and the structural beam 1119 are connected and collectively surrounded to form the power distribution compartment 1117. The third cover 1114 is connected to the second sub-cover 11125, and the area of the third cover 1114 is smaller than the area of the second sub-cover 11125.

[0157] Specifically, the structural beam 1119 adopts a high-strength aluminum alloy profile, and the cross section of the structural beam 1119 can be a rectangular hollow structure, which not only ensures the structural strength but also reduces the weight. The structural beam 1119 can be detachably connected to the first cover body 1112 or the second cover body 1113 through a bolt assembly, and the two ends of the structural beam 1119 can also be tightly fitted and fixed to the inner wall of the frame body 1111, so that the structural beam 1119 forms a stable frame structure together with the frame body 1111, the first cover body 1112 and the second cover body 1113. The structural beam 1119 is arranged in the accommodation space 1115 and divides the accommodation space 1115 into the battery compartment 1116 and the power distribution compartment 1117 which are independent of each other.

[0158] The edges of the first sub-cover body 11124 and the second sub-cover body 11125 can be connected to the frame body 1111 and the structural beam 1119 through bolts. The first sub-cover body 11124, together with the frame body 1111 and the structural beam 1119, forms the battery compartment 1116, and the battery monomer assembly 1120 can be fixed in the battery compartment 1116 through a mounting bracket. The second sub-cover body 11125, together with the frame body 1111 and the structural beam 1119, forms the power distribution compartment 1117, and the power distribution assembly 1130 is fixed in the power distribution compartment 1117.

[0159] To realize complete isolation between the battery compartment 1116 and the power distribution compartment 1117, the height of the structural beam 1119 can be consistent with the depth of the accommodation space 1115, and a sealing rubber strip can also be arranged at the connection between the structural beam 1119 and the first cover body 1112 and the second cover body 1113, so as to ensure that there is no airflow communication between the two battery compartments 1116 and the power distribution compartment 1117, and reduce the risk of thermal interference and electromagnetic interference.

[0160] In the embodiment, the arrangement of the structural beam 1119 realizes the physical isolation and functional partitioning of the battery monomer assembly 1120 and the power distribution assembly 1130. The battery compartment 1116 is dedicated to electrical energy storage, and the power distribution compartment 1117 is dedicated to electrical energy distribution, which reduces the influence of heat generated by the battery monomer 1121 on the electrical performance of the power distribution assembly 1130, and also reduces the interference of electromagnetic radiation generated by the power distribution assembly 1130 on the battery management system, so that the working stability of the battery device 1100 is improved. The third cover body 1114 is arranged only on the second sub-cover body 11125 corresponding to the power distribution compartment 1117, and the first sub-cover body 11124 of the battery compartment 1116 does not need to be provided with an opening, so as to maintain the complete sealing of the battery compartment 1116 and further reduce the risk of sealing failure. In addition, the partition design enables the installation and debugging of the battery monomer assembly 1120 and the power distribution assembly 1130 to be performed independently, thereby improving the production efficiency. Furthermore, the independent sub-cover body design facilitates individual maintenance of different compartments. For example, when only the battery monomer 1121 needs to be replaced, the first sub-cover body 11124 can be disassembled without touching the power distribution compartment 1117 area.

[0161] In some embodiments, the third cover 1114 is made of transparent material.

[0162] Specifically, the third cover 1114 is made of high-strength transparent material, for example, polycarbonate (PC) or acrylic material, which has high light transmittance (≥90%), high impact strength (impact strength of more than 60 kJ / m2), and high and low temperature resistance (-40℃ to 120℃), and can adapt to harsh working environments.

[0163] The inner and outer surfaces of the third cover 1114 are polished to reduce light reflection. At the same time, an anti-fog film is attached to the inner surface of the third cover 1114 to prevent fogging caused by temperature difference and ensure clear vision during inspection.

[0164] The transparent third cover 1114 enables visual inspection of the power distribution assembly 1130. Without the need to disassemble the third cover 1114, the operator can directly observe the working state of the power distribution assembly 1130 through the transparent third cover 1114, such as whether the wire connection is loose, whether the element is ablated and discolored, whether the indicator light is normal, etc., reducing the risk of damage to the sealing performance caused by frequent opening of the traditional inspection.

[0165] The selection of high-strength transparent material ensures that the third cover 1114 has high protection performance, and the impact resistance and weather resistance can meet the needs of various harsh environments such as outdoor and vehicle-mounted. The design of the anti-fog film solves the problem of fogging of the third cover 1114 in low-temperature environments, ensuring the reliability of inspection in all scenarios. In addition, the transparent third cover 1114 can also be used with an internal lighting device, allowing clear observation of the state of the power distribution assembly 1130 in dim environments, further improving the convenience and accuracy of inspection.

[0166] In this embodiment, the third cover 1114 is made of transparent material, so that the operator can observe the working condition of the power distribution assembly 1130 without disassembling the third cover 1114, which is beneficial to reduce the risk of frequent disassembly of the third cover 1114 and to ensure the sealing between the third cover 1114 and the second sub-cover 11125.

[0167] In some embodiments, the box body 1110 further comprises a sealing ring, which is arranged around the outer periphery of the open port 1118 and connected between the third cover 1114 and the second sub-cover 11125.

[0168] Specifically, the sealing ring can be made of elastic sealing materials, such as silicone or EPDM rubber, giving it good aging resistance, oil resistance, and elastic recovery. The cross-sectional shape of the sealing ring can be circular, rectangular, or U-shaped, with the U-shaped cross-section providing better fit and sealing performance.

[0169] A sealing ring is positioned around the outer periphery of the open opening 1118. There are two installation methods: First, an annular groove is created on the second sub-cover 11125 corresponding to the outer periphery of the open opening 1118. The sealing ring is embedded in this groove, with a groove depth of 1 / 2 to 2 / 3 of the sealing ring's diameter. When the third cover 1114 is closed, the sealing ring is deformed by the edge 11141 of the third cover 1114, filling the gap between the third cover 1114 and the second sub-cover 11125. Second, the sealing ring is adhered to the inner side of the edge 11141 of the third cover 1114 using sealant. After the third cover 1114 is closed, the sealing ring fits tightly against the surface of the second sub-cover 11125. The inner diameter of the sealing ring is slightly smaller than the inner diameter of the open opening 1118, and the outer diameter is slightly larger than the outer diameter of the edge 11141, ensuring complete coverage of the sealing area.

[0170] In this embodiment, the sealing ring significantly improves the sealing level at the opening 1118. Through the compression deformation of the elastic material, it can effectively fill the gap between the third cover 1114 and the second sub-cover 11125, preventing dust, moisture, oil, and other impurities from entering the housing 1110, thus meeting the needs of use in harsh environments such as outdoor and water immersion. In addition, the sealing ring can also absorb some vibration energy, reducing vibration friction between the third cover 1114 and the second sub-cover 11125 and extending the service life of the cover.

[0171] In some embodiments, refer to Figure 4 and Figure 5 As shown, the battery device 1100 also includes a fourth locking assembly 1131, which is connected between the power distribution assembly 1130 and the housing 1110.

[0172] Specifically, the fourth locking assembly 1131 is used to reliably fix the power distribution assembly 1130 inside the enclosure 1110. The fourth locking assembly 1131 can be selected according to the structural form of the power distribution assembly 1130, such as bolt locking, snap locking or clamp locking. Among them, the bolt locking structure is suitable for large power distribution assemblies 1130, and the snap locking is suitable for small and lightweight assemblies.

[0173] For example, the fourth locking assembly 1131 can adopt a bolt locking structure, and the fourth locking assembly 1131 includes a mounting bracket and a fixing bolt. The mounting bracket can be an L-shaped steel plate, which is fixed around the shell of the power distribution assembly 1130 by welding, or the mounting bracket is integrally formed on the shell of the power distribution assembly 1130, and a long circular hole (for fine adjustment of the position) is formed on the mounting bracket. A nut seat is welded on the structural beam 1119 of the box body 1110 at a position corresponding to the mounting bracket, and the fixing bolt is threadedly connected with the nut seat through the long circular hole of the mounting bracket, and the fixing of the power distribution assembly 1130 is achieved by tightening the bolt.

[0174] In some examples, in order to improve the anti-vibration performance, a rubber damping pad can be arranged between the power distribution assembly 1130 and the mounting bracket, and the thickness of the damping pad is 3-5 mm, which can absorb vibration energy.

[0175] In the embodiment, the fourth locking assembly 1131 effectively solves the displacement problem of the power distribution assembly 1130 during transportation and use, the fourth locking assembly 1131 can improve the fixing strength of the power distribution assembly 1130, reduces the faults such as wire loosening and poor element contact caused by vibration, and improves the electrical connection reliability.

[0176] In a specific embodiment, referring to Figures 2-14As shown, the battery device 1100 comprises a battery cell assembly 1120, a power distribution assembly 1130 and a box body 1110; the power distribution assembly 1130 is electrically connected with the battery cell assembly 1120; the box body 1110 comprises a frame body 1111, a first cover body 1112, a second cover body 1113 and a third cover body 1114, the first cover body 1112 and the second cover body 1113 are oppositely arranged and both are connected with the frame body 1111 to jointly enclose a containing space 1115; the containing space 1115 comprises a battery compartment 1116 and a power distribution compartment 1117, the battery cell assembly 1120 is contained in the battery compartment 1116, and the power distribution assembly 1130 is contained in the power distribution compartment 1117; the first cover body 1112 comprises a first sub-cover body 11124 and a second sub-cover body 11125 connected with each other, the first sub-cover body 11124 is connected on the frame body 1111 and matches the battery compartment 1116, and the second sub-cover body 11125 is connected on the frame body 1111 and matches the power distribution compartment 1117; the second sub-cover body 11125 is provided with an open port 1118, the open port 1118 is oppositely arranged with the power distribution assembly 1130, and the third cover body 1114 is covered on the open port 1118 and movably or detachably connected with the second sub-cover body 11125; the power distribution assembly 1130 is provided with a plurality of power distribution assemblies, and the third cover body 1114 is provided with a plurality of third cover bodies to match the corresponding power distribution assemblies 1130, each third cover body 1114 is correspondingly arranged with each power distribution assembly 1130; the third cover body 1114 has a first sub-edge portion 11142 and a second sub-edge portion 11143, and the first sub-edge portion 11142 and the second sub-edge portion 11143 are oppositely arranged; the battery device 1100 further comprises an adapter assembly 1150 connected on the second sub-cover body 11125, the adapter assembly 1150 is rotatably connected with the first sub-edge portion 11142 of the third cover body 1114, so that the third cover body 1114 can be switched between a position covering the open port 1118 and a position opening the open port 1118; the box body 1110 further comprises a second locking assembly 1160 connected between the second sub-edge portion 11143 and the second sub-cover body 11125; or, the third cover body 1114 has an edge portion 11141, and the second sub-cover body 11125 has a limiting portion 11121 adjacent to the open port 1118, the edge portion 11141 is inserted into the limiting portion 11121 and covered on the open port 1118.The edge portion 11141 includes oppositely arranged first and second sub-edge portions 11142 and 11143, and the limiting portion 11121 includes first and second limiting portions 11122 and 11123 connected to the second sub-cover body 11125, the first and second limiting portions 11122 and 11123 are arranged in parallel and located at opposite sides of the opening 1118, the first sub-edge portion 11142 is inserted and matched with the first limiting portion 11122, and the second sub-edge portion 11143 is inserted and matched with the second limiting portion 11123, so that the third cover body 1114 can be switched between a position covering the opening 1118 and a position opening the opening 1118; the box body 1110 further includes a constraint portion 1180 connected to the second sub-cover body 11125, the constraint portion 1180 is arranged at a side of the opening 1118 and located at an end of the insertion path of the edge portion 11141, and the third cover body 1114 abuts against the constraint portion 1180, so as to limit the movement of the third cover body 1114 towards the constraint portion 1180; the box body 1110 further includes a clamping portion 1190 connected to the second sub-cover body 11125, the clamping portion 1190 is arranged at a side of the opening 1118 and located at a start of the insertion path of the edge portion 11141, the constraint portion 1180 and the clamping portion 1190 are oppositely arranged, and the clamping portion 1190 is connected to the third cover body 1114, so as to limit the movement of the third cover body 1114 away from the constraint portion 1180; the clamping portion 1190 is a flexible structure, and the clamping portion 1190 can be switched between a clamping position extending out of the surface of the second sub-cover body 11125 and an unlocking position hidden in the second sub-cover body 11125; the box body 1110 further includes a structural beam 1119 connected to the first or second cover body 1112 and accommodated in the accommodation space 1115, so that the accommodation space 1115 is divided into the battery compartment 1116 and the power distribution compartment 1117; the battery device 1100 further includes a fourth locking assembly 1131 connected between the power distribution assembly 1130 and the box body 1110.

[0177] According to some embodiments of the present application, referring to Figure 1 The present application also provides a power consumption device, which includes the battery device 1100 in the above embodiments, and the battery device 1100 is used for storing or providing electric energy.

[0178] The technical solutions described in the embodiments of the present application are applicable to various power consumption devices using battery monomers 1121, such as mobile phones, portable devices, notebook computers, electric vehicles, electric toys, electric tools, vehicles 1000, ships and spacecraft, etc., for example, the spacecraft includes airplanes, rockets, space shuttles and spacecraft, etc.

[0179] The example of the power consuming device in the present application is based on the example of the battery device 1100, and the example of the power consuming device includes all technical effects of the example of the battery device 1100, and details are not repeated.

[0180] According to some embodiments of the present application, the present application also provides an energy storage device, which includes the power conversion device and the battery device 1100 in the above embodiments, and the power conversion device is used to electrically connect the power generation device and the energy storage device.

[0181] Specifically, the energy storage device can include one or more battery clusters to improve the voltage and capacity of the energy storage device. The battery cluster can include a plurality of battery devices 1100, and the plurality of battery devices 1100 are connected in series through the busbar component to improve the voltage of the energy storage device. When the energy storage device includes a plurality of battery clusters, the plurality of battery clusters are connected in parallel to improve the capacity of the energy storage device.

[0182] The energy storage device can be used in energy storage power stations, wind power systems, solar power systems, mobile power systems, or temporary power supply systems, etc. The energy storage device can store electrical energy as needed and output electrical energy at an appropriate time. For example, the energy storage device can store electrical energy during the low valley of electricity consumption, and provide electrical energy for related users or electrical equipment during the peak of electricity consumption. The energy storage system provided by the embodiments of the present application can be any power system that needs to use the energy storage device.

[0183] In some embodiments, the energy storage device is an energy storage container or an energy storage cabinet.

[0184] In some embodiments, the energy storage device can include a cabinet body and one or more battery clusters, and the battery cluster is contained in the cabinet body.

[0185] In some embodiments, the energy storage device can include a thermal management module, a master control module, a general control module, a power distribution module, and a fire-fighting module, etc.

[0186] As an example, the thermal management module can include a liquid cooling unit, and the liquid cooling unit provides cooling liquid for adjusting the temperature of the battery monomer 1121 to each battery device 1100 through a pipeline.

[0187] As an example, the master control module can be used as a battery management unit of the battery cluster to monitor and manage the battery cluster. The master control module can monitor the current, voltage, power, or temperature, etc. of the battery cluster. For example, the charging and discharging current, voltage, etc. of the battery cluster can be controlled. The master control module includes a slave battery management unit SBMU (Slave Battery Management Unit, SBMU), a fusion switch, etc.

[0188] As an example, the master control module can be used as a battery management unit of the energy storage device, for monitoring and managing the energy storage device. The master control module can monitor information such as current, voltage, power, state of charge, or temperature of the energy storage device. For example, the charging and discharging current, voltage, etc. of the energy storage device can be controlled. As an example, the master control module includes an insulation monitoring module IMM (Insulation Monitoring Module, IMM), a master battery management unit MBMU (Master Battery Management Unit, MBMU), an Ethernet ETH (EtherNet, ETH), and an optical fiber conversion module.

[0189] As an example, the fire control module includes a control panel, a detector, an alarm device, etc., for detecting, alarming, or extinguishing the energy storage system.

[0190] As an example, the power distribution module can be used to distribute power to modules that need power in the energy storage device.

[0191] According to some embodiments of the present application, the present application also provides an energy storage system, which includes a power conversion device and the energy storage device in the above embodiments, and the power conversion device is used to electrically connect the power generation device and the energy storage device.

[0192] In some embodiments, the energy storage system can include one or more energy storage devices and a power conversion device (Power Converter System, PCS) connected between the power generation device and the energy storage device. The power generation device is used to generate electric energy, and the electric energy generated by the power generation device can be stored in the energy storage device through the power conversion device. As an example, the power generation device can be a solar panel, a hydroelectric power generation device, a thermal power generation device, a wind power generation device, etc. The specific type of power generation device is not limited in the present application.

[0193] According to some embodiments of the present application, the present application also provides a charging network, which includes a charging pile and the energy storage device in the above embodiments or the energy storage system in the above embodiments, and the energy storage device is used to provide electric energy for the charging pile.

[0194] For example, the charging network includes a charging pile and an energy storage device, and the charging pile is electrically connected to the energy storage device, and the energy storage device is used to provide electric energy for the charging pile. The charging pile is electrically connected to the battery device 1100 in the energy storage device through a cable, and the battery device 1100 can provide the electric energy stored by itself to the charging pile. The charging pile has one or more connectors for connecting with an electric device (such as a vehicle 1000), so as to charge the electric device.

[0195] The energy storage device can be located inside the charging pile (for example, a charging and storage integrated machine) or outside the charging pile.

[0196] The above is only a preferred embodiment of the present application, only the technical principle of the present application is specifically described, and these descriptions are only for explaining the principle of the present application, and cannot be explained as a limitation on the protection scope of the present application in any way. Based on the explanation here, any modification, equivalent replacement and improvement made in the spirit and principle of the present application, and other specific embodiments of the present application that can be conceived by those skilled in the art without creative labor, should be included in the protection scope of the present application.

Claims

1. A battery device, characterized by, The battery device comprises: a battery cell assembly; a power distribution assembly electrically connected to the battery cell assembly; a box comprising a frame, a first cover, a second cover and a third cover, the first cover and the second cover are oppositely arranged and both connected to the frame to jointly form a containing space; the containing space comprises a battery compartment and a power distribution compartment, the battery cell assembly is contained in the battery compartment, and the power distribution assembly is contained in the power distribution compartment; the first cover comprises a first sub-cover and a second sub-cover connected to each other, the first sub-cover is connected to the frame and matches the battery compartment, and the second sub-cover is connected to the frame and matches the power distribution compartment; an open port is arranged on the second sub-cover, the open port is oppositely arranged with the power distribution assembly, and the third cover is arranged on the open port and movably or detachably connected to the second sub-cover.

2. The battery device of claim 1, wherein The power distribution assembly is provided with a plurality of power distribution assemblies, and the third cover is provided with a plurality of third covers to match the corresponding power distribution assemblies, each third cover is arranged one-to-one with each power distribution assembly.

3. The battery device of claim 1, wherein The third cover has a rim portion, the rim portion is oppositely arranged with the second sub-cover, and the rim portion is arranged on the outer periphery of the open port; the box further comprises a first locking assembly connected between the rim portion and the second sub-cover.

4. The battery device of claim 1, wherein The third cover has a first rim portion and a second rim portion, the first rim portion and the second rim portion are oppositely arranged; the battery device further comprises an adapter assembly connected to the second sub-cover, the adapter assembly is rotatably connected to the first rim portion of the third cover, so that the third cover can be switched between a position covering the open port and a position opening the open port; the box further comprises a second locking assembly connected between the second rim portion and the second sub-cover.

5. The battery device of claim 4, wherein The box further comprises a positioning component connected between the third cover and the second sub-cover, so that the third cover can be rotated to a plurality of preset positions relative to the open port.

6. The battery device of claim 1, wherein The third cover has a rim portion, the second sub-cover has a limiting portion adjacent to the open port, and the rim portion is inserted into the limiting portion and arranged on the open port.

7. The battery device of claim 6, wherein The rim portion comprises a first rim portion and a second rim portion oppositely arranged, the limiting portion is arranged on one side of the open port, and the first rim portion is inserted into the limiting portion; the box further comprises a third locking assembly connected between the second rim portion and the second sub-cover.

8. The battery device of claim 6, wherein The edge portion comprises oppositely arranged first and second sub-edge portions, and the limiting portion comprises first and second limiting portions connected to the second sub-cover body, which are arranged in parallel and on opposite sides of the opening, the first sub-edge portion is inserted into the first limiting portion, and the second sub-edge portion is inserted into the second limiting portion, so that the third cover body can be switched between a position covering the opening and a position opening the opening.

9. The battery device of claim 6, wherein The box further comprises a constraint portion connected to the second sub-cover body, which is adjacent to the opening and located at the end of the insertion path of the edge portion, and the third cover body abuts against the constraint portion to limit the movement of the third cover body towards the constraint portion.

10. The battery device of claim 9, wherein, The box further comprises a clamping portion connected to the second sub-cover body, which is adjacent to the opening and located at the beginning of the insertion path of the edge portion, and the constraint portion is arranged opposite to the clamping portion, and the clamping portion is connected to the third cover body to limit the movement of the third cover body away from the constraint portion.

11. The battery device of claim 10, wherein, The clamping portion is a flexible structure, which can be switched between a clamping position and an unlocking position, the clamping position is configured as a position where the flexible structure protrudes out of the surface of the second sub-cover body, and the unlocking position is configured as a position where the flexible structure is hidden in the second sub-cover body.

12. The battery device of claim 1, wherein, In the direction perpendicular to the opening direction of the opening, the projection shape of the power distribution assembly is consistent with the shape of the opening, and the projection area of the power distribution assembly is 1 / 10-1 / 2 of the projection area of the opening.

13. The battery device of claim 1, wherein The box further comprises a structural beam connected to the first cover body or the second cover body and accommodated in the accommodation space, so that the accommodation space is divided into the battery compartment and the power distribution compartment.

14. The battery device of any one of claims 1-13, wherein, The third cover body is made of transparent material.

15. The battery device of any one of claims 1-13, wherein, The box further comprises a sealing ring surrounding the outer periphery of the opening and connected between the third cover body and the first cover body.

16. The battery device of any one of claims 1-13, wherein, The battery device further comprises a fourth locking assembly connected between the power distribution assembly and the box.

17. An electrical device, comprising: The battery device comprises the battery device according to any one of claims 1-16, and is used for storing or providing electric energy. The battery device comprises the battery device according to any one of claims 1-16, and is used for storing or providing electric energy.

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