Battery device and electric device

Abstract

The utility model provides a battery device and a power utilization device, and belongs to the technical field of batteries. The battery device comprises a battery monomer group, a wire harness isolation plate, an end plate and a limiting assembly, wherein the battery monomer group comprises a plurality of battery monomers arranged along a first direction; the wire harness isolation plate is located on one side of the battery monomer group in the second direction and extends in the first direction, the wire harness isolation plate is electrically connected with the plurality of battery monomers, the wire harness isolation plate comprises a plurality of sub-plates and a first limiting structure, and the first limiting structure is configured to connect two adjacent sub-plates in the first direction, the two adjacent sub-plates are limited to relatively move for a preset distance in the first direction and the third direction, and the first direction, the second direction and the third direction are perpendicular to each other; the end plates are arranged on two opposite sides of the battery monomer group in the first direction; the limiting assembly is configured to fix the end portion of the wire harness isolation plate in the first direction to the end plate. The battery device provided by the embodiment of the utility model has relatively high reliability.

Description

TECHNICAL FIELD

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

[0002] Energy conservation and emission reduction are the key to the sustainable development of society. Rechargeable batteries have the characteristics of storing or releasing energy as needed, and are widely used in various power utilization devices or energy storage systems. They are an important part of promoting energy transformation and sustainable development. For the new energy industry, battery technology is an important factor for its development.

[0003] The wire harness isolation plate of the battery device is a core component for ensuring the safe and stable operation of the battery system, and is used to manage the wire harness inside and outside the battery device. The wire harness isolation plate is usually located above the battery monomer and electrically connected to the battery monomer. If there is a gap between the wire harness isolation plate and the battery monomer, dust, water vapor, etc. can easily enter the gap, thereby affecting the performance of the battery device and reducing the reliability of the battery device. CONTENT OF THE UTILITY MODEL

[0004] The present application aims to at least solve one of the technical problems in the background art. To this end, one object of the present application is to provide a battery device and a power utilization device to improve the problems in the background art.

[0005] Embodiments of the first aspect of the present application provide a battery device, comprising: a battery monomer group, a wire harness isolation plate, an end plate, and a limiting component, the battery monomer group comprising a plurality of battery monomers arranged along a first direction; the wire harness isolation plate is located on one side of the battery monomer group along a second direction and extends along the first direction, the wire harness isolation plate is electrically connected to the plurality of battery monomers, the wire harness isolation plate comprises a plurality of sub-plates and a first limiting structure, wherein the first limiting structure is configured to connect two adjacent sub-plates along the first direction, and to limit the relative movement of the two adjacent sub-plates in the first direction and a third direction by a predetermined distance, the first direction, the second direction and the third direction are perpendicular to each other; the end plate is arranged on the opposite sides of the battery monomer group along the first direction; the limiting component is configured to fix the end of the wire harness isolation plate along the first direction to the end plate.

[0006] In the technical solution of the embodiment of the present application, the overall stress of the wire harness isolation plate is dispersed into multiple sub-plates, and the stress of each sub-plate is greatly reduced compared to the overall wire harness isolation plate, thereby reducing the deformation amount of the sub-plate. In this way, the probability of a gap being generated between the wire harness isolation plate and the battery monomer group due to local deformation and bulging of the wire harness isolation plate can be reduced. Moreover, the first limiting structure allows adjacent sub-plates to move relative to each other by a preset distance in the first direction and the third direction, thereby providing a movement space for the deformation of the sub-plates after being stressed, which is equivalent to providing a release channel for the deformation of the sub-plates, further limiting the deformation of the sub-plates, and further improving the problem of a gap being generated between the wire harness isolation plate and the battery monomer group due to the bulging of the wire harness isolation plate after being stressed. The limiting assembly fixes the two ends of the wire harness isolation plate in the first direction to the end plates. In the case of external impact force acting on the two ends of the wire harness isolation plate, the two ends cannot move because they are fixed to the end plates, and therefore, the problem of the two ends of the wire harness isolation plate being forced to retract towards the middle and causing the middle of the wire harness isolation plate to bulge does not occur, further improving the problem of a gap being generated between the wire harness isolation plate and the battery monomer group. In the embodiment of the present application, the wire harness isolation plate is divided into multiple sub-plates, the first limiting structure is arranged to connect adjacent sub-plates, and the two ends of the isolation plate are fixed to the end plates. This reduces the stress concentration that may be caused by the wire harness isolation plate being stressed at different positions, effectively reduces the problem of a gap being generated between the wire harness isolation plate and the battery monomer group due to the bulging of the wire harness isolation plate.

[0007] In some embodiments, the first limiting structure comprises: a first limiting portion and a second limiting portion connected to the end portions of the same sub-plate and arranged at intervals in the third direction, the side wall of the first limiting portion close to the second limiting portion having a first limiting groove; a third limiting portion connected to the end portion of another adjacent sub-plate, the side wall of the third limiting portion in the third direction having a first limiting protrusion; wherein at least one of the first limiting portion and the second limiting portion is elastic so that the third limiting portion where the first limiting protrusion is located is inserted between the first limiting portion and the second limiting portion under the action of elasticity, and after elastic reset, the first limiting protrusion is limited in the first limiting groove, and the first limiting protrusion in the first limiting groove is limited to move a maximum distance of the first distance in the third direction; the length dimension of the first limiting groove in the first direction is configured to allow the first limiting protrusion in the first limiting groove to move a maximum distance of the second distance in the first direction. In this way, the maximum distance of the relative movement of the two sub-plates in the first direction can be limited to the first distance, and the maximum distance of the relative movement of the two sub-plates in the third direction can be limited to the second distance.

[0008] In some embodiments, the first limiting portion has a first guide slope at the end away from the sub-board to which the first limiting portion is connected, the first limiting protrusion has a second guide slope at the side away from the sub-board in which the first limiting protrusion is located, and the first guide slope and the second guide slope are configured to abut against each other and slide relative to each other during insertion of the first limiting protrusion between the first limiting portion and the second limiting portion. The cooperation of the first guide slope and the second guide slope helps to accurately align the first limiting protrusion with the first limiting portion, so that the third limiting portion in which the first limiting protrusion is located is more smoothly inserted between the first limiting portion and the second limiting portion under the action of elasticity, reducing wear between the first limiting portion and the third limiting portion.

[0009] In some embodiments, the first limiting groove side wall has a third guide slope, the third guide slope is arranged opposite the second guide slope of the first limiting protrusion located in the first limiting groove, and the third guide slope and the second guide slope are configured to abut against each other during movement of the first limiting protrusion in the first direction. When the first limiting protrusion moves to a certain distance in the first limiting groove, the second guide slope of the first limiting protrusion can abut against the third guide slope, and the third guide slope can provide a certain buffering effect for the movement of the first limiting protrusion, reducing the probability of damage to the first limiting protrusion due to sudden movement of the first limiting protrusion under stress and impact on the side wall of the first limiting groove.

[0010] In some embodiments, the first limiting portion has a second limiting protrusion on the side wall facing the third limiting portion, the third limiting portion has a second limiting groove on the side wall facing the first limiting portion, the second limiting protrusion is configured to be clamped into the second limiting groove when the first limiting protrusion is clamped into the first limiting groove, and the length of the second limiting groove in the first direction is configured to allow the maximum movement distance of the second limiting protrusion in the second limiting groove in the first direction to be equal to the second distance. By clamping the first limiting protrusion of the third limiting portion into the first limiting groove of the first limiting portion, and clamping the second limiting protrusion of the first limiting portion into the second limiting groove of the third limiting portion, interlocking of the first limiting portion and the third limiting portion is achieved, the connection stability of the two connected sub-boards is improved, the probability of bulging at the connection of the two sub-boards is reduced, and the problem of bulging of the wire harness isolation plate and the existence of a gap between the battery monomer group is further improved.

[0011] In some embodiments, the second limiting protrusion is located on the side of the first limiting groove away from the sub-board in which the first limiting groove is located, and the second limiting protrusion is close to the side wall of the first limiting groove to form the side wall of the first limiting groove. The second limiting protrusion close to the side wall of the first limiting groove is the same structure as the side wall of the first limiting groove, so that the structure of the first limiting portion is more compact, and the relative position accuracy of the second limiting protrusion and the first limiting groove is improved, which is beneficial to improve the production consistency.

[0012] In some embodiments, the first limiting protrusion is located on a side of the second limiting groove away from the sub-board on which the second limiting groove is located, and the first limiting protrusion is adjacent to the side wall of the second limiting groove to form the side wall of the second limiting groove. The first limiting protrusion adjacent to the side wall of the second limiting groove is the same structure surface as the side wall of the second limiting groove, so that the structure of the third limiting part is more compact, and the relative position accuracy of the first limiting protrusion and the second limiting groove is improved, which is beneficial to improve the production consistency.

[0013] In some embodiments, the first limiting structure includes two first limiting parts and two third limiting parts corresponding to the first limiting parts, the two first limiting parts are respectively located on two sides of the second limiting part along the third direction, a middle line between the two first limiting parts is a first middle line, and the two first limiting parts are symmetrical about the first middle line. The two first limiting parts and the corresponding two third limiting parts can improve the connection stability of the two connected sub-boards, reduce the probability of bulging at the connection of the two sub-boards, and further improve the problem that the wiring harness isolation plate bulges and thus there is a gap between the battery monomer group. Moreover, the two first limiting parts are symmetrically arranged, so that the connection of the two sub-boards is uniformly stressed, avoiding structural deformation caused by excessive unilateral stress, thereby further improving the problem that the wiring harness isolation plate bulges and thus there is a gap between the battery monomer.

[0014] In some embodiments, the number of second limiting parts is two, the two second limiting parts are respectively arranged corresponding to the two first limiting parts, and the first limiting structure further includes: a fourth limiting part connected to the same sub-board as the third limiting part, the fourth limiting part is located between the two third limiting parts and is arranged spaced apart from the third limiting part along the third direction; and in the case that the first limiting protrusion is clamped into the first limiting groove, the two second limiting parts are respectively inserted into the gap formed by the fourth limiting part and the two third limiting parts. The third limiting part is inserted between the first limiting part and the second limiting part, and the second limiting part is clamped between the third limiting part and the fourth limiting part, forming an interlocking structure, which can further enhance the stability of the connection between the two sub-boards, reduce the probability of bulging at the connection of the two sub-boards, and further improve the problem that the wiring harness isolation plate bulges and thus there is a gap between the battery monomer group.

[0015] In some embodiments, the first limiting structure further comprises a fifth limiting part and a sixth limiting part connected to the same sub-board, the fifth limiting part and the sixth limiting part are respectively located on the side of the two first limiting parts away from each other; wherein the fifth limiting part and the first limiting part adjacent thereto form a first avoiding space, and the sixth limiting part and the first limiting part adjacent thereto form a second avoiding space. The fifth limiting part and the sixth limiting part are located on the outer side of the two first limiting parts, which can limit the first limiting part in the third direction, reduce the risk of excessive relative displacement of the adjacent two sub-boards in the third direction, and improve the connection stability of the adjacent two sub-boards. Moreover, the first avoiding space and the second avoiding space can prevent and buffer potential collision during the abutting process of the first limiting part, the second limiting part, the third limiting part and the fourth limiting part, and provide redundant space for safe operation of the connection of the adjacent two sub-boards.

[0016] In some embodiments, the wire harness isolation plate further comprises a second limiting structure configured to connect the adjacent two sub-boards in the first direction and limit the relative movement of the adjacent two sub-boards in the third direction by a preset distance; wherein the first limiting structure and the second limiting structure are connected to different positions of the adjacent two sub-boards, respectively. By providing the second limiting structure, the movement of the two sub-boards in the third direction is further limited, which further enhances the connection stability of the two sub-boards, thereby reducing the probability of bulging at the connection of the two sub-boards, and further improving the problem of bulging of the wire harness isolation plate and the existence of gap between the battery monomer group.

[0017] In some embodiments, the second limiting structure comprises a limiting plate located at the end of one of the adjacent two sub-boards, the limiting plate being provided with a limiting hole penetrating in the first direction; and a third limiting protrusion located at the end of the other of the adjacent two sub-boards, the third limiting protrusion extending in the first direction and extending into the limiting hole, the width dimension of the limiting hole in the third direction being configured to allow the third limiting protrusion to move in the third direction by a third distance at most. By providing the limiting hole on the limiting plate and the third limiting protrusion, the second limiting structure can limit the relative movement of the adjacent two sub-boards in the third direction by a preset distance, which is simple in structure and easy to mass-produce.

[0018] In some embodiments, the two sub-panels connected to each other are a first sub-panel and a second sub-panel, the first sub-panel includes a first region and a second region adjacent along a third direction, and the second sub-panel includes a third region and a fourth region adjacent along the third direction; wherein the first limiting structure connects the first region and the third region, the second limiting structure connects the second region and the fourth region, and the first limiting structure and the second limiting structure are staggered along the first direction. The first limiting structure and the second limiting structure connect different regions in different first sub-panels and second sub-panels, and are staggered, so that the wire harness isolation plate has strong anti-twist and anti-shake ability, effectively resisting twisting and shaking between the sub-panels along the first direction and the third direction, and improving the overall structural stability. Moreover, this design can also improve the assembly fault tolerance, ensure the sub-panel butt joint accuracy, and reduce the assembly difficulty.

[0019] In some embodiments, the limiting assembly includes: a limiting cavity, the limiting cavity is arranged on the end plate, and the limiting cavity has an opening on the top surface of the end plate; and a limiting column, the limiting column is connected to the opposite ends of the wire harness isolation plate along the first direction, and the limiting column is configured to be able to extend into the limiting cavity. The limiting column can fix the two ends of the wire harness isolation plate on the end plate along the first direction by extending into the limiting cavity of the end plate, facilitating the installation of the wire harness isolation plate and the end plate.

[0020] In some embodiments, the battery device further includes: a connector, the connector is fixed to the end of the wire harness isolation plate along the first direction, wherein the limiting column is fixed to the bottom surface of the connector, so that the limiting column is connected to the wire harness isolation plate through the connector. By arranging the limiting column on the bottom surface of the connector, the existing space can be fully utilized without increasing the overall volume of the battery device.

[0021] In some embodiments, the end plate includes: at least one first locking hole, the at least one first locking hole is arranged on the side surface of the end plate; and at least one second locking hole, the at least one second locking hole is arranged on the top surface of the end plate. Arranging the first locking hole and the second locking hole at different positions of the end plate can adapt to the installation requirements of different installation structures, and arranging the first locking hole and the second locking hole at different positions can avoid the problem of insufficient pre-tightening force of the battery monomer group due to insufficient locking force, thereby avoiding the problem of being unable to assemble due to insufficient pre-tightening force.

[0022] In some embodiments, the battery device further comprises a protective cover structure, the protective cover structure comprising: a base fixed on the top of the end plate; a protective cover connected to the base, the protective cover having a first cover structure and a second cover structure, the first cover structure and the second cover structure being configured to cover the base to form a containing cavity together with the base; a first rotating structure configured to rotate the first cover structure relative to the base in a first rotating direction to realize opening and closing between the first cover structure and the base; and a second rotating structure configured to rotate the second cover structure relative to the base in a second rotating direction to realize opening and closing between the second cover structure and the base, the first rotating direction being different from the second rotating direction. Thus, the protective cover can be covered relative to the base from different directions, thereby solving the problem that the protective cover cannot be opened due to interference after the battery device is installed in the power consumption device.

[0023] In some embodiments, the protective cover constitutes the first cover structure as a whole, the protective cover having a first wall portion and a second wall portion opposite in a third direction, the first rotating structure comprising: a rotating shaft extending in the first direction, the rotating shaft being rotatably connected to the base and connected to the first wall portion of the protective cover; a first clamping groove provided on the second wall portion of the protective cover; and an elastic buckle matched with the first clamping groove and provided on the base, the elastic buckle and the first clamping groove being configured to be clamped with each other when the protective cover covers the base. The opening and closing of the protective cover relative to the base is realized by the buckle structure, thereby simplifying the opening and closing structure.

[0024] In some embodiments, the protective cover further comprises a third wall portion, the first wall portion and the second wall portion being connected to opposite ends of the third wall portion in the third direction; the second cover structure being located between the first wall portion and the second wall portion and connected to the first wall portion, the second cover structure forming a top wall of the protective cover and a fourth wall portion opposite to the third wall portion; the second rotating structure comprising: a hinge connecting the third wall portion and the second cover structure; a buckle strip connected to a side of the second cover structure away from the third wall portion; and a second clamping groove matched with the buckle strip and provided on a side of the first wall portion and the second wall portion away from the third wall portion, the buckle strip and the second clamping groove being configured to be clamped with each other when the second cover structure covers the base. The second rotating structure, the second cover structure and the first rotating structure are matched with each other, thereby realizing the opening and closing of the protective cover relative to the base in two directions.

[0025] Embodiments of the second aspect of the present application provide a power consumption device comprising the battery device in the above embodiments, the battery device being used to provide electric energy.

[0026] The above description is only a summary of the technical solutions of the present application. In order to enable the technical means of the present application to be more clearly understood, the following specific embodiments of the present application are implemented in accordance with the content of the description, and in order to enable the above and other purposes, characteristics and advantages of the present application to be more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0027] In the drawings, like reference numerals refer to same or similar components throughout the several views. The drawings are not necessarily to scale. It should be understood that the drawings only depict some embodiments consistent with the disclosure and should not be considered to limit the scope of the disclosure.

[0028] Figure 1 A structural schematic diagram of a vehicle according to some embodiments of the present application;

[0029] Figure 2 An exploded structural schematic diagram of a battery device according to some embodiments of the present application;

[0030] Figure 3 An exploded structural schematic diagram of a battery cell according to some embodiments of the present application;

[0031] Figure 4 A perspective structural schematic diagram of a harness isolation plate and an end plate in combination with a battery cell according to some embodiments of the present application;

[0032] Figure 5 A structural schematic diagram of a harness isolation plate according to some embodiments of the present application;

[0033] Figure 6 A structural schematic diagram of one of two adjacent sub-plates according to some embodiments of the present application;

[0034] Figure 7 A structural schematic diagram of the other of two adjacent sub-plates according to some embodiments of the present application;

[0035] Figure 8 A perspective structural schematic diagram of an end plate according to some embodiments of the present application;

[0036] Figure 9 A structural schematic diagram of Figure 4 an enlarged view of the dashed box therein;

[0037] Figure 10 A structural schematic diagram of Figure 5 an enlarged view of the dashed box a therein;

[0038] Figure 11 A structural schematic diagram of Figure 5 an enlarged view of the dashed box b therein;

[0039] Figure 12 A perspective structural schematic diagram of a protective cover structure when closed according to some embodiments of the present application;

[0040] Figure 13 A perspective structural schematic diagram of a protective cover structure when open according to some embodiments of the present application.

[0041] Reference signs:

[0042] Vehicle 1000, first sub-plate 1011, second sub-plate 1012, first locking hole 1041, second locking hole 1042, base 1071, lifting hole 1043, protective cover 1072;

[0043] Battery device 100, wire harness isolation plate 101, first limiting structure 102, second limiting structure 103, end plate 104, limiting column 105, connector 106, protective cover structure 107, accommodating cavity 107a;

[0044] Controller 200;

[0045] Motor 300;

[0046] First limiting groove 411, second limiting protrusion 412, first limiting protrusion 431, second limiting groove 432;

[0047] First cover body 771, second cover body 772;

[0048] Box body 10, first part 11, second part 12;

[0049] Battery monomer 20, end cover 21, electrode terminal 21a, shell 22, electrode assembly 23, tab 23a;

[0050] Baffle 31;

[0051] First limiting part 41, second limiting part 42, third limiting part 43, fourth limiting part 44, fifth limiting part 45, first avoiding space 45a, sixth limiting part 46, second avoiding space 46a;

[0052] Limiting plate 51, limiting hole 51a, third limiting protrusion 52;

[0053] First area 61, second area 62, third area 63, fourth area 64;

[0054] First wall part 71, second wall part 72, rotating shaft 73, first clamping groove 74, elastic clamping buckle 75, third wall part 76, second cover closing structure 77, hinge 78, clamping buckle strip 79;

[0055] Second clamping groove 80;

[0056] First guide inclined surface 1, second guide inclined surface 2, third guide inclined surface 3;

[0057] First direction X, second direction Y, third direction W. DETAILED DESCRIPTION

[0058] The embodiments of the present application will be described in detail below with reference to the drawings. The following examples are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot be used to limit the protection scope of the present application.

[0059] 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 terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application; the terms "comprising," "comprises" and "including" as used herein are synonymous with and meant to have the same meaning as the term "including"; the term "coupled" as used herein means the joining of two members together with one or more intervening members.

[0060] 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 "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0061] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The occurrence of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to each other. The skilled person explicitly and implicitly understands that the embodiments described herein can be combined with other embodiments.

[0062] 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 " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.

[0063] In the description of the embodiments of the present application, the term "a plurality of" refers to two or more (including two), and similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of pieces" refers to two or more pieces (including two pieces).

[0064] In the description of the embodiments of the present application, the orientations or positional relationships indicated by 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 are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do 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 a limitation on the embodiments of the present application.

[0065] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, can be fixedly connected, can also be detachably connected, or integrated; can be mechanically connected, can also be electrically connected; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0066] At present, from the development of market situation, the application of rechargeable batteries is more and more widely. Rechargeable batteries are not only applied to energy storage power supply systems such as hydroelectric, thermal, wind and solar power stations, but also widely used in various electronic equipment, such as electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, military equipment and aerospace and many other fields. With the continuous expansion of the application field of rechargeable batteries, the market demand is also increasing.

[0067] Battery cells are connected in series or parallel through busbars. In order to collect the temperature and voltage of the battery module, a wire harness needs to be connected to the busbar. At the same time, the wire harnesses and the battery cell sampling structure need to be isolated from each other to avoid short circuit between each other. In the related art, a wire harness isolation plate is provided to isolate the battery cell sampling structure, the busbar and the wire harness connected thereto, so as to ensure the safety performance of the battery cell. The wire harness isolation plate is usually located at the top of the battery cell, and the wire harness isolation plate is usually welded with the electrode terminal of the battery cell to realize electrical connection with the battery cell. At present, the number of battery cells in the battery device is usually multiple, and the multiple battery cells are arranged in the same direction to form a battery cell group. The wire harness isolation plate is located above the battery cell group to be electrically connected with each battery cell in the battery cell group. If the number of battery cells in the battery cell group is large, the overall length of the battery cell group is long, and accordingly, the length of the wire harness isolation plate also needs to be longer. However, when the length of the wire harness isolation plate is too long, the middle part of the wire harness isolation plate is prone to deformation and bulging, which further causes a gap between the wire harness isolation plate and the battery cell group. In this way, dust, water vapor and the like are easy to enter the gap, affecting the performance of the battery cell and reducing the reliability of the battery cell. Moreover, the gap causes the distance between the wire harness isolation plate and the battery cell group to be too large, so that the wire harness isolation plate cannot be welded with the electrode terminal of the battery cell, affecting the transmission of the electrical signal of the battery cell and further affecting the reliability of the battery cell.

[0068] Based on the above considerations, a battery device is designed, which comprises a battery cell group, a wire harness isolation plate, an end plate and a limiting assembly. The battery cell group comprises a plurality of battery cells arranged in a first direction. The wire harness isolation plate is located on one side of the battery cell group in a second direction and extends in the first direction. The wire harness isolation plate is electrically connected with the plurality of battery cells. The wire harness isolation plate comprises a plurality of sub-plates and a first limiting structure. The first limiting structure is configured to connect two adjacent sub-plates in the first direction and limit the relative movement of the two adjacent sub-plates in the first direction and a third direction by a preset distance. The first direction, the second direction and the third direction are perpendicular to each other. The end plate is arranged on the opposite sides of the battery cell group in the first direction. The limiting assembly is configured to fix the end of the wire harness isolation plate in the first direction to the end plate.

[0069] The overall stress of the wire harness isolation plate is dispersed into multiple sub-plates, and the stress of each sub-plate is greatly reduced compared to the overall wire harness isolation plate, thereby reducing the deformation amount of the sub-plate, which can reduce the probability that the wire harness isolation plate is locally deformed and bulges to cause a gap between the wire harness isolation plate and the battery monomer group. In addition, the first limiting structure allows adjacent sub-plates to move in the first direction and the third direction by a preset distance, providing a movement space for the deformation of the sub-plates after being stressed, which is equivalent to providing a release channel for the deformation of the sub-plates, further limiting the deformation of the sub-plates, and further improving the problem that the wire harness isolation plate bulges after being stressed to cause a gap between the wire harness isolation plate and the battery monomer group. The limiting assembly fixes the two ends of the wire harness isolation plate in the first direction on the end plate, and in the case that the two ends of the wire harness isolation plate are subjected to external impact force, since the two ends are fixed on the end plate and cannot move, the problem that the two ends of the wire harness isolation plate are stressed and then retracted to the middle to cause the middle of the wire harness isolation plate to bulge does not occur, further improving the problem that a gap is caused between the wire harness isolation plate and the battery monomer group. In the embodiments of the present application, by dividing the wire harness isolation plate into multiple sub-plates and connecting adjacent sub-plates through the first limiting structure, and by fixing the two ends of the isolation plate on the end plate, the stress concentration caused by the stress of the wire harness isolation plate at different positions is reduced, and the problem that the wire harness isolation plate bulges to cause a gap between the wire harness isolation plate and the battery monomer group is effectively reduced.

[0070] The battery monomer disclosed in the embodiments of the present application can be used in, but is not limited to, an electric device or an energy storage device for a vehicle, a ship or an aircraft. The power supply system of the electric device or the energy storage device can be composed of the battery monomer and the battery disclosed in the present application.

[0071] The embodiments of the present application provide an electric device using a battery as a power supply. The electric device can be, but is not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, an electric vehicle, an electric car, 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, an electric plane toy, etc. The spacecraft can include an airplane, a rocket, a space shuttle, a spacecraft, etc.

[0072] The embodiments of the present application also provide an energy storage device using a battery as a power supply. The energy storage device can be, but is not limited to, an energy storage container, an energy storage cabinet, an energy storage power station, an energy storage battery pack or a portable energy storage system, etc.

[0073] The following embodiments take a vehicle 1000 as an example for convenience of description.

[0074] Please refer to Figure 1 , Figure 1A structural schematic diagram of a vehicle is provided for some embodiments of the present application. The vehicle 1000 can be a fuel vehicle, a gas vehicle, or a new energy vehicle, which can be a pure electric vehicle, a hybrid vehicle, or a range extended vehicle, etc. The vehicle 1000 is internally provided with a battery device 100, which can be arranged at the bottom, head or tail of the vehicle 1000. The battery device 100 can be used for power supply of the vehicle 1000, for example, the battery device 100 can be used as an operating power source of the vehicle 1000. The vehicle 1000 can further include a controller 200 and a motor 300, the controller 200 being used to control the battery device 100 to supply power to the motor 300, for example, for the working power demand of the vehicle 1000 during starting, navigation and driving.

[0075] In some embodiments of the present application, the battery device 100 can not only be used as an operating power source of the vehicle 1000, but also be used as a driving power source of the vehicle 1000, instead of or partially instead of fuel or natural gas to provide driving power for the vehicle 1000.

[0076] Please refer to Figure 2 , Figure 2 A disassembled structural schematic diagram of a battery device is provided for some embodiments of the present application. The battery device 100 includes a box body 10 and a battery cell 20, and the battery cell 20 is contained in the box body 10. Among them, the box body 10 is used to provide a containing space for the battery cell 20, and the box body 10 can adopt various structures. In some embodiments, the box body 10 can include a first part 11 and a second part 12, the first part 11 and the second part 12 are overlapped with each other, and the first part 11 and the second part 12 jointly define a containing space for containing the battery cell 20.

[0077] In the battery device 100, the battery cell 20 can be multiple, and the multiple battery cells 20 can be connected in series, in parallel or in a mixed manner. The mixed manner means that there are both series connection and parallel connection among the multiple battery cells 20. The multiple battery cells 20 can be directly connected in series, in parallel or in a mixed manner, and then the whole of the multiple battery cells 20 is contained in the box body 10; of course, the battery device 100 can also be that the multiple battery cells 20 are first connected in series, in parallel or in a mixed manner to form a battery module, and then multiple battery modules are connected in series, in parallel or in a mixed manner to form a whole, and are contained in the box body 10. The battery device 100 can also include other structures, for example, the battery device 100 can also include a current combing component for realizing electrical connection among the multiple battery cells 20.

[0078] Among them, each battery cell 20 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery or a magnesium-ion battery, but is not limited thereto. The battery cell 20 can be in the shape of a cylinder, a flat body, a cuboid or other shapes, etc.

[0079] Please refer toFigure 3 , Figure 3 This is an exploded structural diagram of a battery cell provided in some embodiments of this application. The battery cell 20 refers to the smallest unit that makes up the battery. For example... Figure 3 The battery cell 20 includes an end cap 21, a housing 22, an electrode assembly 23, and other functional components.

[0080] End cap 21 refers to a component that covers the opening of housing 22 to isolate the internal environment of battery cell 20 from the external environment. The shape of end cap 21 can be adapted to the shape of housing 22 to fit it. Optionally, end cap 21 can be made of a material with certain hardness and strength (such as aluminum alloy), so that end cap 21 is not easily deformed under pressure and impact, giving battery cell 20 higher structural strength and improved safety performance. Functional components such as electrode terminals 21a can be provided on end cap 21. Electrode terminals 21a can be used for electrical connection with electrode assembly 23 for outputting or inputting electrical energy into battery cell 20. In some embodiments, end cap 21 can also be provided with a pressure relief mechanism for releasing internal pressure when the internal pressure or temperature of battery cell 20 reaches a threshold. The material of end cap 21 can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. In some embodiments, an insulating element may be provided on the inner side of the end cap 21. The insulating element can be used to isolate the electrical connection components within the housing 22 from the end cap 21 to reduce the risk of short circuits. For example, the insulating element may be made of plastic, rubber, etc.

[0081] The housing 22 is an assembly used to cooperate with the end cap 21 to form the internal environment of the battery cell 20, wherein the formed internal environment can be used to accommodate the electrode assembly 23, electrolyte, and other components. The housing 22 and the end cap 21 can be separate components, and an opening can be provided on the housing 22, through which the end cap 21 closes the opening to form the internal environment of the battery cell 20.

[0082] Electrode assembly 23 is the component in the battery cell 20 where electrochemical reactions occur. The casing 22 may contain one or more electrode assemblies 23. The electrode assembly 23 is mainly formed by winding or stacking positive and negative electrode plates, and typically a separator is provided between the positive and negative electrode plates. The portions of the positive and negative electrode plates containing active material constitute the main body of the electrode assembly, while the portions of the positive and negative electrode plates without active material each constitute a tab 23a. The positive and negative tabs may be located together at one end of the main body or separately at both ends of the main body. During the charging and discharging process of the battery, the positive and negative active materials react with the electrolyte, and the tabs 23a connect to the electrode terminals to form a current loop.

[0083] The embodiment of the present application provides a battery device, which comprises a battery monomer group, a wire harness isolation plate, an end plate and a limiting assembly, the battery monomer group comprises a plurality of battery monomers arranged along a first direction; the wire harness isolation plate is located at one side of the battery monomer group along a second direction and extends along the first direction, the wire harness isolation plate is electrically connected with the plurality of battery monomers, the wire harness isolation plate comprises a plurality of sub-plates and a first limiting structure, wherein the first limiting structure is configured to connect two adjacent sub-plates along the first direction, and limit the relative movement of the two adjacent sub-plates by a preset distance in the first direction and a third direction, the first direction, the second direction and the third direction are perpendicular to each other; the end plate is arranged on the opposite sides of the battery monomer group along the first direction; and the limiting assembly is configured to fix the end of the wire harness isolation plate along the first direction to the end plate.

[0084] Reference Figure 4 The first direction X can be the thickness direction of the battery monomer 20. The second direction Y can be the height direction of the battery monomer 20. The wire harness isolation plate 101 extends along the first direction X, and thus can be located above each battery monomer 20 in the battery monomer group to be electrically connected with each battery monomer 20.

[0085] Reference Figure 5 The wire harness isolation plate 101 comprises a sampling assembly and an electrical connector. In some embodiments, the sampling assembly can comprise a temperature sampling module and a voltage sampling module. The voltage sampling module collects voltage information of the battery monomer 20, and each voltage sampling module can be connected with one battery monomer 20 to collect the voltage information of the battery monomer 20. The voltage sampling module can be a nickel sheet, which can be integrated on the substrate of the wire harness isolation plate 101, for example, the nickel sheet can be integrated on the substrate of the wire harness isolation plate 101 by welding or pressure bonding. The nickel sheet is connected with the positive and negative electrodes of the battery monomer 20 to detect the voltage of the battery monomer 20.

[0086] The plurality of temperature sampling modules respectively collect temperature information of the battery monomer 20. The temperature sampling module can be a temperature sensor, which can be an NTC (Negative Temperature Coefficient). The resistance value of the NTC changes with the change of temperature, and thus the temperature change of the battery monomer 20 can be calculated through the change of the resistance value of the NTC. The two pins of the NTC can be connected to the substrate of the wire harness isolation plate 101 by a wire, and the NTC is attached to the surface of the battery monomer 20 to achieve good heat conduction. The voltage sampling module and the temperature sampling module can be multiple, and can be flexibly arranged according to the position of the battery monomer 20.

[0087] In some embodiments, the electrical connection can be a tab 31, which can be electrically connected with the electrode terminal of the battery cell 20. Exemplarily, the tab 31 is provided with a plurality of through holes, and the electrode terminal of the battery cell 20 passes through the through holes of the tab 31 and is welded with the tab 31. The electrode terminal can be a pole of the battery cell 20. A nickel sheet can be welded with the tab 31 to connect the positive and negative electrodes of the battery cell 20 through the tab 31.

[0088] Figure 6 One of the two adjacent sub-panels connected is shown, Figure 7 The other of the two adjacent sub-panels connected is shown. The number of sub-panels can include but is not limited to two. The first limiting structure 102 limits the distance range of the relative movement of the adjacent two sub-panels, allowing the adjacent two sub-panels to move at most a preset distance in the first direction X and the third direction W, and cannot exceed this range. The preset distance refers to a distance set in advance, wherein the preset distance of the relative movement of the adjacent two sub-panels in the first direction X and the third direction W limited by the first limiting structure 102 can be the same or different.

[0089] The first limiting structure 102 includes but is not limited to a buckle structure. In some embodiments, the first limiting structure 102 can be integrally formed with the sub-panels to which it is connected, or can be connected to the sub-panels by welding, bonding, etc.

[0090] Since the overall stress of the wire harness isolation plate 101 is dispersed into multiple sub-panels, the stress amount of each sub-panel is greatly reduced compared to the whole wire harness isolation plate 101, thereby reducing the deformation amount of the sub-panels, which can reduce the probability that the wire harness isolation plate 101 locally deforms and rises to cause a gap between the wire harness isolation plate 101 and the battery cell group. Moreover, the first limiting structure 102 allows the adjacent sub-panels to move a preset distance in the first direction X and the third direction W, providing a movement space for the deformation of the sub-panels after being stressed, which is equivalent to providing a release channel for the deformation of the sub-panels, further limiting the deformation of the sub-panels, and further improving the problem that the wire harness isolation plate 101 rises after being stressed to cause a gap between the wire harness isolation plate 101 and the battery cell group.

[0091] Moreover, since the first limiting structure 102 allows the adjacent sub-panels to move a preset distance in the first direction X and the third direction W, the relative positions of the adjacent sub-panels in the first direction X and the third direction W can be flexibly adjusted when the wire harness isolation plate 101 is installed, adapting to the accumulation of tolerances in the first direction X and the third direction W, so that the wire harness isolation plate 101 can be correspondingly electrically connected with the electrode terminal of the battery cell 20.

[0092] In some embodiments, the limiting assembly can include, but is not limited to, a threaded connection structure, a pin positioning structure, a buckle structure, a clamping structure, a welding structure, an adhesive structure, a riveting structure, etc. Illustratively, the limiting assembly can be a threaded connection structure, which includes a fastener and a mounting hole, the fastener is arranged in one of the end plate and the wire harness isolation plate, the mounting hole is arranged in the other one of the end plate and the wire harness isolation plate, the fastener is inserted into the mounting hole to realize the connection of the end plate and the wire harness isolation plate. The fastener can include, but is not limited to, a bolt, a screw, etc. Illustratively, the limiting assembly can also be a pin positioning structure, which can include a latch and a positioning hole, the latch is arranged in one of the end plate and the wire harness isolation plate, the positioning hole is arranged in the other one of the end plate and the wire harness isolation plate, the latch is inserted into the positioning hole to realize the connection of the end plate and the wire harness isolation plate. The pin can include, but is not limited to, a cylindrical pin, a conical pin, or an elastic pin, etc.

[0093] The limiting assembly fixes the two ends of the wire harness isolation plate 101 in the first direction X on the end plate 104, in the case that the two ends of the wire harness isolation plate 101 are subjected to external impact force, since the two ends are fixed on the end plate 104 and cannot move, the problem that the two ends of the wire harness isolation plate 101 are forced to retract to the middle and cause the middle of the wire harness isolation plate 101 to bulge is avoided, further improving the problem that a gap is generated between the wire harness isolation plate 101 and the battery monomer group.

[0094] In the embodiments of the present application, by dividing the wire harness isolation plate into multiple sub-plates as a whole and arranging the first limiting structure to connect adjacent sub-plates, and fixing the two ends of the isolation plate on the end plate, the stress concentration caused by the force on the wire harness isolation plate at different positions is reduced, effectively reducing the bulging of the wire harness isolation plate and the problem that a gap is generated between the wire harness isolation plate and the battery monomer group.

[0095] According to some embodiments of the present application, the first limiting structure includes: a first limiting part and a second limiting part connected to the end of the same sub-plate and arranged at intervals along the third direction, the side wall of the first limiting part close to the second limiting part has a first limiting groove; a third limiting part connected to the end of the other adjacent sub-plate, the third limiting part has a first limiting protrusion on one side wall along the third direction; wherein at least one of the first limiting part and the second limiting part is elastic to allow the third limiting part where the first limiting protrusion is located to be inserted between the first limiting part and the second limiting part under the action of elasticity, after elastic reset, the first limiting protrusion is limited in the first limiting groove, and the first limiting protrusion in the first limiting groove is limited to move a first distance at most along the third direction; the length dimension of the first limiting groove along the first direction is configured to allow the first limiting protrusion in the first limiting groove to move a second distance at most along the first direction.

[0096] Reference Figure 10Since the first limiting portion 41 and the second limiting portion 42 are arranged at intervals along the third direction W, the side wall of the first limiting portion 41 close to the second limiting portion 42 is the side wall of the first limiting portion 41 along the third direction W. The first limiting groove 411 is located on the side wall of the first limiting portion 41 along the third direction W and is arranged towards the second limiting portion 42. One of the side walls of the third limiting portion 43 along the third direction W has the first limiting protrusion 431, so that after the third limiting portion 43 is inserted between the first limiting portion 41 and the second limiting portion 42, the first limiting protrusion 431 can correspond to the first limiting groove 411.

[0097] At least one of the first limiting portion 41 and the second limiting portion 42 is elastic, and further enables the gap between the first limiting portion 41 and the second limiting portion 42 to be enlarged under the action of elasticity, so that the third limiting portion 43 where the first limiting protrusion 431 is located can be inserted between the first limiting portion 41 and the second limiting portion 42, thereby enabling the first limiting protrusion 431 to be clamped into the first limiting groove 411. The action of elasticity refers to the deformation of the first limiting portion 41 and / or the second limiting portion 42 with elasticity under the action of external force. Elastic recovery refers to the recovery of the first limiting portion 41 and / or the second limiting portion 42 with elasticity to the original shape and size after deformation under the action of external force. After elastic recovery, the gap between the first limiting portion 41 and the second limiting portion 42 is reduced to the initial state, and further limits the third limiting portion 43 where the first limiting protrusion 431 is located between the first limiting portion 41 and the second limiting portion 42, avoiding the first limiting protrusion 431 from being removed from the first limiting groove 411. It is worth noting that after elastic recovery, the maximum distance between the inner wall of the first limiting groove 411 and the second limiting portion 42 in the third direction W needs to be greater than the maximum size of the third limiting portion 43 where the first limiting protrusion 431 is located in the third direction W, and the difference between the maximum distance between the inner wall of the first limiting groove 411 and the second limiting portion 42 in the third direction W and the maximum size of the third limiting portion 43 where the first limiting protrusion 431 is located in the third direction W is the first distance, which allows the first limiting protrusion 431 in the first limiting groove 411 to move a maximum distance of the first distance in the third direction W after the first limiting portion 41 and / or the second limiting portion 42 is elastically recovered. In other words, the maximum distance between the deepest part of the recess of the first limiting groove 411 and the second limiting portion 42 in the third direction W is greater than the maximum size of the third limiting portion 43 where the first limiting protrusion 431 is located in the third direction W, and the difference between the maximum distance between the deepest part of the recess of the first limiting groove 411 and the second limiting portion 42 in the third direction W and the maximum size of the third limiting portion 43 where the first limiting protrusion 431 is located in the third direction W is the first distance. Among the side walls where the first limiting groove 411 is located, the gap between the region outside the first limiting groove 411 and the second limiting portion 42 is smaller than the maximum size of the third limiting portion 43 where the first limiting protrusion 431 is located in the third direction W, thereby avoiding the first limiting protrusion 431 from being removed from between the first limiting portion 41 and the second limiting portion 42.

[0098] Exemplarily, the first limiting portion 41 and the second limiting portion 42 can both have elasticity. The materials of the first limiting portion 41 and the second limiting portion 42 include but are not limited to elastic materials such as plastic, rubber, etc.

[0099] The length dimension of the first limiting groove 411 along the first direction X is configured to allow the first limiting protrusion 431 inside the first limiting groove 411 to move a second distance along the first direction X at most. The first limiting groove 411 has two side walls opposite along the first direction X, and in the case that the first limiting protrusion 431 is located inside the first limiting groove 411, the distance between the two side walls of the first limiting groove 411 opposite along the first direction X along a path parallel to the first direction X is greater than the dimension of the first limiting protrusion 431 along the first direction X, and the difference between the distance between the two side walls of the first limiting groove 411 opposite along the first direction X and the dimension of the first limiting protrusion 431 along the first direction X is the second distance, so that the first limiting protrusion 431 can move a second distance along the first direction X inside the first limiting groove 411.

[0100] In the above technical solution, by clamping the first limiting protrusion 431 into the first limiting groove 411, the sub-board where the first limiting protrusion 431 is located can be connected with the sub-board where the first limiting groove 411 is located, the length dimension of the first limiting groove 411 along the first direction X can be controlled, and the first limiting protrusion 431 has a certain moving space inside the first limiting groove 411, but is limited to move a first distance at most, thereby limiting the maximum distance of relative movement of the two sub-boards along the first direction X to the first distance. By arranging the second limiting part 42 and the first limiting part 41 to be spaced apart along the third direction W, the third limiting part 43 located between the first limiting part 41 and the second limiting part 42 can be limited in the third direction W, so that the first limiting protrusion 431 has a certain moving space in the third direction W, but is limited to move a second distance at most, thereby limiting the maximum distance of relative movement of the two sub-boards along the third direction W to the second distance.

[0101] According to some embodiments of the present application, the end of the first limiting part away from the sub-board connected by the first limiting part has a first guide inclined surface, and the side of the first limiting protrusion away from the sub-board where the first limiting protrusion is located has a second guide inclined surface matched with the first guide inclined surface, and the first guide inclined surface and the second guide inclined surface are configured to abut against and slide relative to each other during the process of inserting the first limiting protrusion between the first limiting part and the second limiting part.

[0102] Continuing to refer to Figure 10 , the first guide inclined surface 1 and the second guide inclined surface 2 are inclined relative to the first direction X and the third direction W, and the first guide inclined surface 1 and the second guide inclined surface 2 can be parallel, and during the process of inserting the third limiting part 43 where the first limiting protrusion 431 is located between the first limiting part 41 and the second limiting part 42, the first guide inclined surface 1 slides along the second guide inclined surface 2, which helps the first limiting protrusion 431 to be clamped into the first limiting groove 411.

[0103] In the above technical solution, the first guide slope 1 and the second guide slope 2 are matched, which helps the first limiting protrusion 431 and the first limiting portion 41 to be accurately aligned, so that the third limiting portion 43 where the first limiting protrusion 431 is located is more smoothly inserted between the first limiting portion 41 and the second limiting portion 42 under the elastic action, and the wear between the first limiting portion 41 and the third limiting portion 43 is reduced.

[0104] According to some embodiments of the present application, the first limiting groove sidewall has a third guide slope, the third guide slope is oppositely arranged with the second guide slope of the first limiting protrusion located in the first limiting groove, and the third guide slope and the second guide slope are configured to abut against each other during movement of the first limiting protrusion in the first direction.

[0105] With reference to Figure 10 , the first limiting groove 411 has two sidewalls opposite in the first direction X, and the third guide slope 3 is arranged on one of the two sidewalls of the first limiting groove 411 closer to the sub-board where the first limiting portion 41 is located. The third guide slope 3 can be parallel to the second guide slope 2, and when the first limiting protrusion 431 moves in the first direction X to a certain distance away from the sub-board where it is located, the second guide slope 2 will abut against the third guide slope 3. Due to the arrangement of the second guide slope 2, the size of the first limiting protrusion 431 where the second guide slope 2 is located gradually decreases in the first direction X from the sub-board where the first limiting protrusion 431 is located to the sub-board where the first limiting groove 411 is located. Therefore, when the second guide slope 2 just abuts against the third guide slope 3, the part with smaller size of the first limiting protrusion 431 where the second guide slope 2 is located just enters the smaller gap between the first limiting portion 41 and the second limiting portion 42, and the part with smaller size of the first limiting protrusion 431 may not be able to be clamped in the smaller gap between the first limiting portion 41 and the second limiting portion 42, so that the first limiting protrusion 431 continues to move a distance towards the sub-board where the first limiting groove 411 is located, while the second guide slope 2 continues to move a distance along the third guide slope 3. Until the part with larger size of the first limiting protrusion 431 reaches the smaller gap between the first limiting portion 41 and the second limiting portion 42, the first limiting protrusion 431 cannot move further due to its larger size, thereby limiting the movement of the first limiting protrusion 431 in the first direction X. The smaller gap between the first limiting portion 41 and the second limiting portion 42 is the gap between the region of the sidewall of the first limiting groove 411 other than the first limiting groove 411 and located between the first limiting groove 411 and the sub-board where the first limiting portion 41 is connected and the second limiting portion 42.

[0106] In the above technical solution, when the first limiting protrusion 431 moves to a certain distance in the first limiting groove 411, the second guide inclined surface 2 of the first limiting protrusion 431 can abut against the third guide inclined surface 3, and the third guide inclined surface 3 can provide a certain buffering effect for the movement of the first limiting protrusion 431, thereby reducing the probability of damaging the first limiting protrusion 431 due to the sudden movement of the first limiting protrusion 431 under stress and the impact of the side wall of the first limiting groove 411.

[0107] According to some embodiments of the present application, the side wall of the first limiting portion towards the third limiting portion has a second limiting protrusion, the side wall of the third limiting portion towards the first limiting portion has a second limiting groove, the second limiting protrusion is configured to be clamped into the second limiting groove in the case that the first limiting protrusion is clamped into the first limiting groove, and the length dimension of the second limiting groove in the first direction is configured to allow the maximum movement distance of the second limiting protrusion in the first direction in the second limiting groove to be equal to the second distance.

[0108] With reference to the foregoing Figure 10 In other words, the first limiting portion 41 is provided with the first limiting groove 411 and the second limiting protrusion 412, and the third limiting portion 43 is provided with the first limiting protrusion 431 and the second limiting groove 432, and by clamping the first limiting protrusion 431 into the first limiting groove 411 and clamping the second limiting protrusion 412 into the second limiting groove 432, the interlocking of the first limiting portion 41 and the third limiting portion 43 can be achieved, and the connection strength of the two sub-panels connected by the first limiting structure 102 is improved.

[0109] In some embodiments, the first limiting groove 411 can be arranged closer to the sub-panel connected by the first limiting portion 41 than the second limiting protrusion 412, and the second limiting groove 432 can be arranged closer to the sub-panel connected by the third limiting portion 43 than the first limiting protrusion 431.

[0110] In other embodiments, the second limiting protrusion 412 can be arranged closer to the sub-panel connected by the first limiting portion 41 than the first limiting groove 411, and the first limiting protrusion 431 can be arranged closer to the sub-panel connected by the third limiting portion 43 than the second limiting groove 432.

[0111] The second limiting groove 432 has two side walls opposite along the first direction X, and in the case where the second limiting protrusion 412 is located in the second limiting groove 432, the distance between the two side walls of the second limiting groove 432 opposite along the first direction X is greater than the size of the second limiting protrusion 412 along the first direction X along a path parallel to the first direction X, and the difference between the distance between the two side walls of the second limiting groove 432 opposite along the first direction X and the size of the second limiting protrusion 412 along the first direction X is greater than or equal to the second distance, so that the moving distance of the second limiting protrusion 412 along the first direction X in the second limiting groove 432 is equal to the second distance.

[0112] In the case where the maximum moving distance of the second limiting protrusion 412 in the second limiting groove 432 along the first direction X is equal to the second distance, when the first limiting protrusion 431 moves in the first limiting groove 411 along the first direction X by the second distance, the maximum moving limit is reached, and at the same time, the second limiting protrusion 412 also reaches the maximum moving limit in the second limiting groove 432 along the first direction X.

[0113] In the case where the maximum moving distance of the second limiting protrusion 412 in the second limiting groove 432 along the first direction X is greater than the second distance, when the first limiting protrusion 431 moves in the first limiting groove 411 along the first direction X by the second distance, the maximum moving limit is reached, at this time, there is still a gap between the second limiting protrusion 412 and the inner wall of the second limiting groove 432 along the first direction X, but since the first limiting groove 411 limits the movement of the first limiting protrusion 431, the first limiting portion 41 and the second limiting portion 42 as a whole cannot continue to move, so the maximum moving distance of the second limiting protrusion 412 in the second limiting groove 432 along the first direction X is also the second distance.

[0114] In the above technical solution, the first limiting protrusion 431 of the third limiting portion 43 is clamped into the first limiting groove 411 of the first limiting portion 41, and the second limiting protrusion 412 of the first limiting portion 41 is clamped into the second limiting groove 432 of the third limiting portion 43, thereby achieving interlocking of the first limiting portion 41 and the third limiting portion 43, improving the connection stability of the two sub-panels connected, reducing the probability of bulging at the connection between the two sub-panels, and further improving the problem that the wiring harness isolation plate 101 bulges and thus there is a gap between the battery monomer group.

[0115] According to some embodiments of the present application, the second limiting protrusion is located on the side of the first limiting groove away from the sub-panel where the first limiting groove is located, and the second limiting protrusion constitutes a side wall of the first limiting groove close to the side wall of the first limiting groove.

[0116] Continuing to refer to Figure 10The second limiting protrusion 412 can be arranged at one end of the first limiting portion 41 away from the sub-board connected thereto, and the first guide inclined surface 1 can be arranged at the second limiting protrusion 412.

[0117] In the technical solution, the side wall of the second limiting protrusion 412 close to the first limiting recess 411 is the same structure surface as the side wall of the first limiting recess 411, so that the structure of the first limiting portion 41 is more compact, and the relative position accuracy of the second limiting protrusion 412 and the first limiting recess 411 is improved, which is beneficial to improve the production consistency.

[0118] According to some embodiments of the present application, the first limiting protrusion is located at one side of the second limiting recess away from the sub-board where the second limiting recess is located, and the side wall of the first limiting protrusion close to the side wall of the second limiting recess constitutes the side wall of the second limiting recess.

[0119] Continuing to refer to Figure 10 The first limiting protrusion 431 can be arranged at one end of the third limiting portion 43 away from the sub-board connected thereto.

[0120] In the technical solution, the side wall of the first limiting protrusion 431 close to the second limiting recess 432 is the same structure surface as the side wall of the second limiting recess 432, so that the structure of the third limiting portion 43 is more compact, and the relative position accuracy of the first limiting protrusion 431 and the second limiting recess 432 is improved, which is beneficial to improve the production consistency.

[0121] According to some embodiments of the present application, the first limiting structure includes two first limiting portions and two third limiting portions corresponding to the first limiting portions, the two first limiting portions are respectively located on both sides of the second limiting portion along the third direction, the middle line between the two first limiting portions is the first middle line, and the two first limiting portions are symmetrical about the first middle line.

[0122] In some embodiments, the second limiting portion can be only one, and the second limiting portion is located between the two first limiting portions and has a gap with the two first limiting portions respectively, and the two third limiting portions are respectively inserted into the gaps formed between the second limiting portion and the first limiting portions.

[0123] Referring to Figure 10 In other embodiments, the second limiting portion 42 can also be two, and the two second limiting portions 42 are arranged along the third direction W and located between the two first limiting portions 41, and the two second limiting portions 42 have a gap with the first limiting portion 41 adjacent thereto respectively, and the two third limiting portions 43 are respectively inserted into the gaps formed between the second limiting portion 42 and the corresponding first limiting portion 41.

[0124] The structures of the first limiting portion 41, the second limiting portion 42 and the third limiting portion 43 can refer to the related descriptions of the above embodiments, which will not be repeated here.

[0125] In the above embodiment, two first limiting portions 41 and corresponding two third limiting portions 43 are arranged, which can improve the connection stability of the two connected sub-panels, reduce the probability of bulging at the connection of the two sub-panels, and further improve the problem of bulging of the wire harness isolation plate 101 and the gap between the battery monomer group. In addition, the two first limiting portions 41 are symmetrically arranged, so that the connection of the two sub-panels is uniformly stressed, avoiding structural deformation caused by excessive unilateral stress, thereby further improving the problem of bulging of the wire harness isolation plate 101 and the gap between the battery monomer 20.

[0126] According to some embodiments of the present application, the number of second limiting portions is two, and the two second limiting portions are respectively arranged corresponding to the two first limiting portions. The first limiting structure further comprises: a fourth limiting portion connected to the same sub-panel as the third limiting portion, the fourth limiting portion is located between the two third limiting portions and is arranged in the third direction with the third limiting portion; wherein, in the case that the first limiting protrusion is inserted into the first limiting groove, the two second limiting portions are respectively inserted into the gap formed by the fourth limiting portion and the two third limiting portions.

[0127] Continuing to refer to Figure 10 , the second limiting portion 42 and the third limiting portion 43 can not be provided with a limiting protrusion and a limiting recess. In the third direction W, the size of the second limiting portion 42 can be less than or equal to the gap size between the third limiting portion 43 and the fourth limiting portion 44, so that the second limiting portion 42 can be smoothly inserted between the third limiting portion 43 and the fourth limiting portion 44.

[0128] It can be understood that among the two adjacent sub-panels, one of the sub-panels is connected with two first limiting portions 41 and two second limiting portions 42, and the other sub-panel is connected with two third limiting portions 43 and one fourth limiting portion 44. Therefore, in the case that the size of the two adjacent sub-panels in the third direction W is the same or similar, in the third direction W, the size of the second limiting portion 42 can be less than the size of the fourth limiting portion 44, so that the first limiting portion 41, the second limiting portion 42, the third limiting portion 43 and the fourth limiting portion 44 can be smoothly formed into an interlocking structure.

[0129] In some embodiments, the end of the second limiting part 42 away from the sub-board to which it is connected can have two oppositely arranged fourth guide slopes, the end of the third limiting part 43 away from the sub-board to which it is connected can also have a fifth guide slope matched with one of the fourth guide slopes of the second limiting part 42, and the end of the fourth limiting part 44 away from the sub-board to which it is connected can have two sixth guide slopes respectively matched with the other fourth guide slopes of the two second limiting parts 42. In this way, during the insertion of the second limiting part 42 between the third limiting part 43 and the fourth limiting part 44, the fourth guide slope of the second limiting part 42 and the fifth guide slope of the third limiting part 43 abut against and slide against each other, and the other fourth guide slope of the second limiting part 42 and the sixth guide slope of the fourth limiting part 44 abut against and slide against each other.

[0130] In the above technical solution, the third limiting part 43 is inserted between the first limiting part 41 and the second limiting part 42, and the second limiting part 42 is clamped between the third limiting part 43 and the fourth limiting part 44, forming an interlocking structure, which can further enhance the stability of the connection between the two sub-boards, reduce the probability of bulging at the connection between the two sub-boards, and further improve the problem of bulging of the wire harness isolation plate 101 and the existence of a gap between the battery monomer group.

[0131] According to some embodiments of the present application, the first limiting structure further comprises a fifth limiting part and a sixth limiting part connected to the same sub-board, the fifth limiting part and the sixth limiting part being located on the side away from each other of the two first limiting parts respectively; wherein a first avoiding space is formed between the fifth limiting part and the first limiting part adjacent thereto, and a second avoiding space is formed between the sixth limiting part and the first limiting part adjacent thereto.

[0132] Continuing to refer to Figure 10 , the fifth limiting part 45 and the sixth limiting part 46 can be connected to the same sub-board as the first limiting part 41, or can be connected to the same sub-board as the third limiting part 43.

[0133] In some embodiments, the fifth limiting part 45 can be in the shape of "L", and the long side of the "L" shape has a gap with the first limiting part 41, which serves as the first avoiding space 45a, and the short side of the "L" shape can be in contact with the first limiting part 41. The sixth limiting part 46 can be in the shape of "L", and the long side of the "L" shape has a gap with the first limiting part 41, which serves as the second avoiding space 46a, and the short side of the "L" shape can be in contact with the first limiting part 41.

[0134] In the technical solution, the fifth limiting part 45 and the sixth limiting part 46 are located outside the two first limiting parts 41, capable of limiting the first limiting part 41 in the third direction W, reducing the risk of excessive relative displacement of the two adjacent sub-panels in the third direction W, and improving the connection stability of the two adjacent sub-panels. In addition, the first avoiding space 45a and the second avoiding space 46a can prevent and buffer potential collisions during the butt joint of the first limiting part 41, the second limiting part 42, the third limiting part 43 and the fourth limiting part 44, and provide a redundant space for safe operation for the connection of the two adjacent sub-panels.

[0135] Reference Figure 5 According to some embodiments of the present application, the wire harness isolation plate further comprises a second limiting structure 103, which is configured to connect two adjacent sub-panels in the first direction X and limit the relative movement of the two adjacent sub-panels in the third direction W by a preset distance; wherein the first limiting structure 102 and the second limiting structure 103 are connected to different positions of the two adjacent sub-panels respectively.

[0136] The second limiting structure 103 limits the range of relative movement of the two adjacent sub-panels in the third direction W, allowing the two adjacent sub-panels to move at most by a preset distance in the third direction W, and cannot exceed this range. The preset distance of the relative movement of the two adjacent sub-panels in the third direction W limited by the second limiting structure 103 and the preset distance of the relative movement of the two adjacent sub-panels in the third direction W limited by the first limiting structure 102 can be the same or different.

[0137] The second limiting structure 103 includes but is not limited to a buckle structure.

[0138] The first limiting structure 102 and the second limiting structure 103 jointly connect the two adjacent sub-panels, wherein the first limiting structure 102 and the second limiting structure 103 can be arranged in direct opposition in the third direction W or can be staggered.

[0139] In the technical solution, the second limiting structure 103 is provided, and the second limiting structure 103 further limits the movement of the two sub-panels in the third direction W, further enhances the connection stability of the two sub-panels, thereby reducing the probability of bulging at the connection of the two sub-panels, and further improving the problem that the wire harness isolation plate 101 bulges and thus has a gap with the battery monomer group.

[0140] Reference Figure 11According to some embodiments of the present application, the second limiting structure 103 comprises a limiting plate 51 and a third limiting protrusion 52. The limiting plate 51 is located at the end of one of the two adjacent sub-plates, and is provided with a limiting hole 51a penetrating in the first direction X. The third limiting protrusion 52 is located at the end of the other of the two adjacent sub-plates, and extends in the first direction X and into the limiting hole 51a. The width dimension of the limiting hole 51a in the third direction W is configured to allow the third limiting protrusion 52 to move a third distance in the third direction W at most.

[0141] Since the limiting hole 51a penetrates in the first direction X, the limiting plate 51 does not limit the displacement of the third limiting protrusion 52 in the first direction X. The two opposite inner walls of the limiting hole 51a in the third direction W can abut against the third limiting protrusion 52. Therefore, when the third limiting protrusion 52 moves a certain distance in the third direction W, the two opposite inner walls of the limiting hole 51a in the third direction W will block the third limiting protrusion 52, thereby limiting the displacement of the third limiting protrusion 52 in the third direction W. The minimum width dimension of the limiting hole 51a in the third direction W is greater than the maximum dimension of the third limiting protrusion 52 in the third direction W, and the difference between the minimum width dimension of the limiting hole 51a in the third direction W and the maximum dimension of the third limiting protrusion 52 in the third direction W is the third distance.

[0142] It can be understood that, since the first limiting structure 102 limits the displacement between the two adjacent sub-plates in the first direction X, even if the limiting plate 51 does not limit the displacement of the third limiting protrusion 52 in the first direction X, the third limiting protrusion 52 will not come out of the limiting hole 51a under the action of the first limiting structure 102.

[0143] In the above technical solution, by means of the limiting hole 51a on the limiting plate 51 and the third limiting protrusion 52, the second limiting structure 103 can limit the relative movement of the two adjacent sub-plates in the third direction W by a predetermined distance, and the structure is simple and easy to mass-produce.

[0144] Reference Figures 5 to 7 According to some embodiments of the present application, the two sub-plates connected to each other are a first sub-plate 1011 and a second sub-plate 1012. The first sub-plate 1011 comprises a first region 61 and a second region 62 adjacent in the third direction W, and the second sub-plate 1012 comprises a third region 63 and a fourth region 64 adjacent in the third direction W. The first limiting structure 102 connects the first region 61 and the third region 63, and the second limiting structure 103 connects the second region 62 and the fourth region 64. The first limiting structure 102 and the second limiting structure 103 are staggered in the first direction X.

[0145] Exemplarily, the first region 61 and the second region 62 can be provided with a plurality of the gaskets 31, for example, the first region 61 and the second region 62 can be provided with three gaskets 31 respectively, and the third region 63 and the fourth region 64 can also be provided with a plurality of the gaskets 31, for example, the third region 63 and the fourth region 64 can be provided with three gaskets 31 respectively.

[0146] According to the embodiments of the present application, the first region 61 and the second region 62 can be an integrally formed structure, and the third region 63 and the fourth region 64 can also be an integrally formed structure.

[0147] The first region 61 and the third region 63 are arranged along the first direction X, and the second region 62 and the fourth region 64 are arranged along the first direction X. In the first sub-plate 1011, the second region 62 is protruded relative to the first region 61 close to the end of the second sub-plate 1012, and in the second sub-plate 1012, the third region 63 is protruded relative to the fourth region 64 close to the end of the first sub-plate 1011, so that the first limiting structure 102 connecting the first region 61 and the third region 63 and the second limiting structure 103 connecting the second region 62 and the fourth region 64 are staggered arranged along the first direction X.

[0148] In the above technical solution, the first limiting structure 102 and the second limiting structure 103 connect different regions in different first sub-plates 1011 and second sub-plates 1012, and are staggered arranged, so that the wire harness isolation plate 101 has strong anti-torsion and anti-shaking ability, effectively resisting the torsion and shaking between the sub-plates along the first direction X and the third direction W, and improving the overall structural stability. Moreover, this design can also improve the assembly fault tolerance, ensure the sub-plate butt joint precision, and reduce the assembly difficulty.

[0149] According to some embodiments of the present application, the limiting assembly includes a limiting cavity and a limiting column 105, the limiting cavity is arranged on the end plate, and the limiting cavity has an opening on the top surface of the end plate; the limiting column is connected to the opposite ends of the wire harness isolation plate 101 along the first direction X, and the limiting column is configured to be able to extend into the limiting cavity.

[0150] Reference Figures 9 to 11 The top surface of the end plate 104 is the top surface of the end plate 104 along the second direction Y. The end plates 104 arranged on both sides of the battery monomer group clamp a plurality of battery monomers 20 in the battery monomer group. The two end plates 104 and the battery monomer group can be bundled together by a fixing belt.

[0151] The limiting cavity is a cavity provided in the end plate 104, and extends along the second direction Y. The limiting cavity can extend through the end plate 104 along the second direction Y, or can only occupy a part of the height of the end plate 104. The opening of the limiting cavity is located on the top surface of the end plate 104, that is, the top surface of the end plate 104 exposes the opening of the limiting cavity. It can be understood that the wire harness isolation plate 101 is located on the top of the battery monomer group and extends along the first direction X, and the end plate 104 is located on both sides of the battery monomer group along the first direction X. Therefore, the opposite ends of the wire harness isolation plate 101 along the first direction X correspond to the positions of the two end plates 104. The two limiting cavities on the opposite ends of the wire harness isolation plate 101 along the first direction X correspond to the two end plates 104, respectively.

[0152] The limiting column 105 can extend along the second direction Y and extend into the limiting cavity.

[0153] The limiting column 105 can extend into the limiting cavity of the end plate, so as to fix the two ends of the wire harness isolation plate along the first direction on the end plate, and facilitate the installation of the wire harness isolation plate and the end plate.

[0154] According to some embodiments of the present application, the battery device further comprises a connector fixed to the end of the wire harness isolation plate along the first direction, wherein the limiting column is fixed to the bottom surface of the connector, so that the limiting column is connected to the wire harness isolation plate through the connector.

[0155] Referring to Figure 4 and Figure 9 , the connector 106 is used to realize reliable electrical connection between the battery monomer group and the external wire harness. The bottom surface of the connector 106 is the bottom surface of the connector 106 along the second direction Y. The connector 106 can be welded to the wire harness isolation plate 101, and the limiting column 105 can be welded to the bottom surface of the connector 106.

[0156] By providing the limiting column 105 on the bottom surface of the connector 106, the existing space can be fully utilized without increasing the overall volume of the battery device.

[0157] According to some embodiments of the present application, the end plate comprises at least one first locking hole and at least one second locking hole, the first locking hole is provided on the side surface of the end plate, and the second locking hole is provided on the top surface of the end plate.

[0158] Referring to Figure 8 , the side surface of the end plate 104 is a large surface of the end plate 104. The inner walls of the first locking hole 1041 and the second locking hole 1042 are provided with threads, and the end plate 104 can be connected to other structures by bolts.

[0159] In some embodiments, the number of first locking holes 1041 can be multiple, for example, two. The number of second locking holes 1042 can be multiple, for example, two.

[0160] In some embodiments, the first locking hole 1041 can serve as a main locking hole for connection with other structures, and the second locking hole 1042 can serve as a backup locking hole.

[0161] In some embodiments, the side of the first locking hole 1041 can further be provided with at least one lifting hole 1043, which penetrates the end plate 104 along the thickness direction of the end plate 104. The shape of the lifting hole 1043 can include, but is not limited to, a square, a circle, etc. For example, the shape of the lifting hole 1043 is square, and the ratio of the width of the lifting hole 1043 to the width of the end plate 104 along the third direction W is 1 / 4~1 / 3. In the case where the number of lifting holes 1043 is two, and the two lifting holes 1043 are arranged at intervals along the third direction W, the center distance of the two lifting holes 1043 along the third direction W is not less than 1 / 2 of the width of the end plate 104.

[0162] In the above technical solution, the first locking hole 1041 and the second locking hole 1042 are arranged at different positions of the end plate 104, which can adapt to the installation requirements of different installation structures. In addition, the arrangement of the first locking hole 1041 and the second locking hole 1042 at different positions can avoid the problem of insufficient pre-tightening force of the battery monomer group due to insufficient locking force, thereby avoiding the problem of unable to assemble due to insufficient pre-tightening force.

[0163] According to some embodiments of the present application, the battery device further comprises a protective cover structure, which comprises: a base, a protective cover, a first rotating structure and a second rotating structure; the base is fixed on the top of the end plate; the protective cover is connected to the base, and the protective cover has a first cover structure and a second cover structure, which are configured to cover the base to form a containing cavity with the base; the first rotating structure is configured to rotate the first cover structure relative to the base along a first rotating direction to realize the opening and closing between the first cover structure and the base; the second rotating structure is configured to rotate the second cover structure relative to the base along a second rotating direction to realize the opening and closing between the second cover structure and the base, and the first rotating direction is different from the second rotating direction.

[0164] The battery device has an output pole, which is welded to the wire harness isolation plate 101, for realizing the external output function of the battery monomer group.

[0165] Reference Figure 4 , Figure 9 and Figure 11The base 1071 of the protective cover structure 107 is mounted on the end plate 104 to provide a support platform for mounting of the output terminal of the battery device, and the base 1071 can be connected to the end plate 104 by bolts. The protective cover 1072 and the base 1071 can be made of insulating material, and the protective cover 1072 is configured to cooperate with the base 1071 to form a relatively insulated accommodating cavity 107a, in which the connecting end of the output terminal is accommodated to insulate and protect the connecting end of the output terminal.

[0166] The first cover structure and the second cover structure are structures for covering the protective cover 1072, wherein the first cover structure and the second cover structure can be the entire protective cover structure 107 or part of the protective cover 1072, and the positions of the first cover structure and the second cover structure in the protective cover 1072 can not be completely the same.

[0167] The first rotating structure and the second rotating structure refer to mechanical structures that can realize relative rotation between different components around a fixed axis. The first rotating structure and the second rotating structure can include, but are not limited to, rotating shafts, hinges, and the like.

[0168] In the above technical solution, the first cover structure, the second cover structure, the first rotating structure, and the second rotating structure are provided to enable the protective cover 1072 to be covered with the base 1071 from different directions, thereby solving the problem that the protective cover 1072 can not be opened due to interference after the battery device is mounted on the power consumption device.

[0169] Reference Figure 12 and Figure 13 According to some embodiments of the present application, the protective cover 1072 as a whole constitutes the first cover structure, the protective cover 1072 has a first wall portion 71 and a second wall portion 72 opposite in the third direction W, the first rotating structure includes a rotating shaft 73, a first clamping groove 74, and an elastic buckle 75 cooperating with the first clamping groove 74, the rotating shaft 73 extends in the first direction X, the rotating shaft 73 is rotatably connected to the base 1071 and connected to the first wall portion 71 of the protective cover 1072, the first clamping groove 74 is arranged on the second wall portion 72 of the protective cover 1072, and the elastic buckle 75 is arranged on the base 1071, and the elastic buckle 75 and the first clamping groove 74 are configured to be clamped with each other when the protective cover 1072 covers the base 1071.

[0170] That is, the protective cover 1072 as a whole can rotate relative to the base 1071 in a first rotation direction to achieve opening and closing with the base 1071. The base 1071 can be provided with a shaft sleeve for mounting the rotating shaft 73, and the rotating shaft 73 is inserted into the shaft sleeve so that the rotating shaft 73 is rotatably connected to the base 1071, and the rotating direction of the rotating shaft 73 is the first rotation direction. The first clamping groove 74 matches the elastic buckle 75, and when the protective cover 1072 is closed on the base 1071 in the first rotation direction, the bottom of the second wall part 72 of the protective cover 1072 is pressed downward towards the elastic buckle 75, an external force is applied to the elastic buckle 75, and the elastic buckle 75 deforms under the action of the external force, so that the second wall part 72 of the protective cover 1072 can be smoothly pressed down. When the first clamping groove 74 passes through the elastic buckle 75, the external force applied to the elastic buckle 75 disappears, as shown in Figure 12 , the elastic buckle 75 restores its shape and is clamped into the first clamping groove 74, thereby keeping the protective cover 1072 and the base 1071 fixedly connected. As shown in Figure 13 , when the protective cover 1072 is opened, the side wall of the first clamping groove 74 applies a squeezing force to the elastic buckle 75, and the elastic buckle 75 deforms under the squeezing action and comes out of the first clamping groove 74.

[0171] Exemplarily, the elastic buckle 75 can be provided with a protrusion, and the clamping groove is provided with a groove at a corresponding position, and the protrusion can be clamped into the groove.

[0172] In the above technical solution, the opening and closing of the protective cover 1072 as a whole and the base 1071 is realized by the buckle structure, and the opening and closing structure is simplified.

[0173] Referring to Figure 12 and Figure 13 , according to some embodiments of the present application, the protective cover 1072 further comprises a third wall part 76, the first wall part 71 and the second wall part 72 are connected to opposite ends of the third wall part 76 in a third direction W; a second closing structure 77 is located between the first wall part 71 and the second wall part 72 and connected with the first wall part 71, and the second closing structure 77 forms a top wall of the protective cover 1072 and a fourth wall part opposite to the third wall part 76; the second rotating structure comprises: a hinge 78, a buckle strip 79, and a second clamping groove 80 matched with the buckle strip 79, the hinge 78 connects the third wall part 76 and the second closing structure 77; the buckle strip 79 is connected to a side of the second closing structure 77 away from the third wall part 76; the second clamping groove 80 is provided on a side of the first wall part 71 and the second wall part 72 away from the third wall part 76, and the buckle strip 79 and the second clamping groove 80 are configured to be clamped with each other when the second closing structure 77 closes the base 1071.

[0174] The second cover combination structure 77 is part of the protective cover 1072. The second cover combination structure 77 can include a first cover body 771 and a second cover body 772. When the second cover combination structure 77 covers the base 1071, the first cover body 771 is located at the top of the accommodating cavity 107a to form a top wall of the protective cover 1072, and the second cover body 772 is located at the side of the accommodating cavity 107a and is arranged opposite to the first wall portion 71 to form a fourth wall portion of the protective cover 1072. It is worth noting that the opening and closing of the second cover combination structure 77 is realized by the buckle strip 79 located on the second cover combination structure 77 and the second clamping groove 80 located on the first wall portion 71 and the second wall portion 72, that is, there is no connection between the second cover combination structure 77 and the base 1071. Therefore, when the second cover combination structure 77 needs to be used to open and close the base 1071, the elastic buckle 75 of the first rotating structure can be clamped into the first clamping groove 74, so that the first wall portion 71 and the second wall portion 72 are fixed to the base 1071, and then the protective cover 1072 is fixed to the base 1071 as a whole.

[0175] The second clamping groove 80 can be arranged on the first wall portion 71 and the second wall portion 72 and located at the bottom of the first wall portion 71 and the second wall portion 72 away from the first wall portion 71, and the buckle strip 79 can be arranged on the bottom of the second cover body 772. The second cover combination structure 77 rotates relative to the third wall portion 76, so that the second cover body 772 drives the buckle strip 79 to press down to the second clamping groove 80 and clamps into the second clamping groove 80, thereby covering the base 1071. When it is needed to open the second cover combination structure 77, the second cover combination structure 77 is opened upward, and the buckle strip 79 is pulled out of the second clamping groove 80, thereby exposing the accommodating cavity 107a.

[0176] In the above technical solution, the second rotating structure and the second cover combination structure 77 cooperate with the first rotating structure, and the protective cover 1072 can be opened and closed relative to the base 1071 in two directions.

[0177] The embodiment of the present application provides a power utilization device, which includes the battery device in the above embodiment and is used to provide electric energy.

[0178] The structure of the battery device and the power utilization device can refer to the related description in the above embodiment, which will not be described here again.

[0179] Reference Figures 4 to 13The embodiment of the application provides a battery device, which comprises a battery monomer group, a wire harness isolation plate 101, an end plate 104 and a limiting assembly, the battery monomer group comprises a plurality of battery monomers 20 arranged along a first direction X; the wire harness isolation plate 101 is located on one side of the battery monomer group along a second direction Y and extends along the first direction X, the wire harness isolation plate 101 is electrically connected with the plurality of battery monomers 20, the wire harness isolation plate 101 comprises a plurality of sub-plates and a first limiting structure 102, wherein the first limiting structure 102 is configured to connect two adjacent sub-plates along the first direction X and limit the relative movement of the two adjacent sub-plates by a preset distance along a third direction W, the first direction X, the second direction Y and the third direction W are perpendicular to each other; the end plate is arranged on the opposite sides of the battery monomer group along the first direction; and the limiting assembly is configured to fix the end of the wire harness isolation plate along the first direction to the end plate.

[0180] The first limiting structure 102 comprises: a first limiting part 41 and a second limiting part 42 connected to the end of the same sub-plate and arranged at intervals along the third direction W, a side wall of the first limiting part 41 close to the second limiting part 42 has a first limiting groove 411; a third limiting part 43 connected to the end of the other adjacent sub-plate, a side wall of the third limiting part 43 along the third direction W has a first limiting protrusion 431; wherein at least one of the first limiting part 41 and the second limiting part 42 has elasticity to enable the third limiting part 43 where the first limiting protrusion 431 is located to be inserted between the first limiting part 41 and the second limiting part 42 under the action of elasticity, after elastic recovery, the first limiting protrusion 431 is limited in the first limiting groove 411, and the first limiting protrusion 431 in the first limiting groove 411 is limited to move a maximum distance along the third direction W; the length dimension of the first limiting groove 411 along the first direction X is configured to allow the first limiting protrusion 431 in the first limiting groove 411 to move a maximum distance along the first direction X.

[0181] The end of the first limiting part 41 away from the sub-plate connected thereto has a first guide inclined surface 1, and the side of the first limiting protrusion 431 away from the sub-plate where the first limiting protrusion 431 is located has a second guide inclined surface 2 matched with the first guide inclined surface 1, and the first guide inclined surface 1 and the second guide inclined surface 2 are configured to be able to abut against and slide relative to each other in the process of inserting the first limiting protrusion 431 between the first limiting part 41 and the second limiting part 42.

[0182] The side wall of the first limiting groove 411 has a third guide inclined surface 3, and the third guide inclined surface 3 is arranged opposite to the second guide inclined surface 2 of the first limiting protrusion 431 located in the first limiting groove 411, and the third guide inclined surface 3 and the second guide inclined surface 2 are configured to be able to abut against each other in the process of moving the first limiting protrusion 431 along the first direction X.

[0183] The side wall of the first limiting part 41 towards the third limiting part 43 has a second limiting protrusion 412, the side wall of the third limiting part 43 towards the first limiting part 41 has a second limiting recess 432, the second limiting protrusion 412 is configured to be clamped into the second limiting recess 432 in the case that the first limiting protrusion 431 is clamped into the first limiting recess 411, and the length dimension of the second limiting recess 432 along the first direction X is configured to allow the maximum movement distance of the second limiting protrusion 412 in the first direction X in the second limiting recess 432 to be equal to the second distance.

[0184] The second limiting protrusion 412 is located on the side of the first limiting recess 411 away from the sub-board where the first limiting recess 411 is located, and the second limiting protrusion 412 is close to the side wall of the first limiting recess 411 to form the side wall of the first limiting recess 411. The first limiting protrusion 431 is located on the side of the second limiting recess 432 away from the sub-board where the second limiting recess 432 is located, and the first limiting protrusion 431 is close to the side wall of the second limiting recess 432 to form the side wall of the second limiting recess 432.

[0185] The first limiting structure 102 includes two first limiting parts 41 and two third limiting parts 43 corresponding to the first limiting parts 41, the two first limiting parts 41 are respectively located on both sides of the second limiting part 42 along the third direction W, the middle line between the two first limiting parts 41 is the first middle line, and the two first limiting parts 41 are symmetrical about the first middle line.

[0186] The number of the second limiting parts 42 is two, the two second limiting parts 42 are respectively arranged corresponding to the two first limiting parts 41, and the first limiting structure 102 further includes a fourth limiting part 44 connected to the same sub-board as the third limiting part 43, the fourth limiting part 44 is located between the two third limiting parts 43 and is arranged spaced apart from the third limiting part 43 along the third direction W; wherein in the case that the first limiting protrusion 431 is clamped into the first limiting recess 411, the two second limiting parts 42 are respectively inserted into the gap formed by the fourth limiting part 44 and the two third limiting parts 43.

[0187] The first limiting structure 102 further includes a fifth limiting part 45 and a sixth limiting part 46 connected to the same sub-board, the fifth limiting part 45 and the sixth limiting part 46 are respectively located on the side away from each other of the two first limiting parts 41; wherein the first limiting part 41 adjacent to the fifth limiting part 45 forms a first avoiding space 45a therebetween, and the first limiting part 41 adjacent to the sixth limiting part 46 forms a second avoiding space 46a therebetween.

[0188] The battery device further comprises a second limiting structure 103 configured to connect two adjacent sub-plates in the first direction X and limit the relative movement of the two adjacent sub-plates in the third direction W by a preset distance; wherein the first limiting structure 102 and the second limiting structure 103 are connected to different positions of the two adjacent sub-plates respectively. The second limiting structure 103 comprises a limiting plate 51 and a third limiting protrusion 52. The limiting plate 51 is located at the end of one of the two adjacent sub-plates, and the limiting plate 51 is provided with a limiting hole 51a penetrating in the first direction X. The third limiting protrusion 52 is located at the end of the other of the two adjacent sub-plates, and the third limiting protrusion 52 extends in the first direction X and extends into the limiting hole 51a. The width dimension of the limiting hole 51a in the third direction W is configured to allow the third limiting protrusion 52 to move in the third direction W by a third distance at most.

[0189] The limiting assembly comprises a limiting cavity and a limiting column 105. The limiting cavity is provided in the end plate 104 and extends in the second direction Y, and the limiting cavity has an opening on the top surface of the end plate 104. The limiting column 105 is connected to the opposite ends of the wire harness isolation plate 101 in the first direction X, extends in the second direction Y, and is configured to extend into the limiting cavity. The end plate 104 comprises at least one first locking hole 1041 provided on the side surface of the end plate 104 and at least one second locking hole 1042 provided on the top surface of the end plate 104. The battery device further comprises a connector 106 fixed to the end of the wire harness isolation plate 101 in the first direction X, wherein the limiting column 105 is fixed to the bottom surface of the connector 106 so that the limiting column 105 is connected to the wire harness isolation plate 101 through the connector 106.

[0190] The battery device further comprises a protective cover structure 107 comprising a base 1071, a protective cover 1072, a first rotating structure and a second rotating structure. The base 1071 is fixed to the top of the end plate 104. The protective cover 1072 is connected to the base 1071 and has a first cover structure and a second cover structure 77 configured to cover the base 1071 to form a containing cavity 107a with the base 1071. The first rotating structure is configured to rotate the first cover structure relative to the base 1071 in a first rotating direction to realize the opening and closing between the first cover structure and the base 1071. The second rotating structure is configured to rotate the second cover structure 77 relative to the base 1071 in a second rotating direction to realize the opening and closing between the second cover structure 77 and the base 1071. The first rotating direction is different from the second rotating direction.

[0191] The protective cover 1072 as a whole constitutes a first cover combination structure, and the protective cover 1072 has a first wall portion 71 and a second wall portion 72 opposite in the third direction W, the first rotating structure comprising a rotating shaft 73, a first clamping groove 74, and an elastic buckle 75 matched with the first clamping groove 74, the rotating shaft 73 extending in the first direction X, the rotating shaft 73 being rotatably connected to the base 1071 and connecting the first wall portion 71 of the protective cover 1072, the first clamping groove 74 being arranged on the second wall portion 72 of the protective cover 1072, and the elastic buckle 75 being arranged on the base 1071, the elastic buckle 75 and the first clamping groove 74 being configured to be clamped with each other when the protective cover 1072 covers the base 1071.

[0192] The protective cover 1072 further comprises a third wall portion 76, the first wall portion 71 and the second wall portion 72 being connected to opposite ends of the third wall portion 76 in the third direction W, and a second cover combination structure 77 being located between the first wall portion 71 and the second wall portion 72 and connected with the first wall portion 71, the second cover combination structure 77 forming a top wall of the protective cover 1072 and a fourth wall portion opposite to the third wall portion 76, the second rotating structure comprising a hinge 78, a buckle strip 79, and a second clamping groove 80 matched with the buckle strip 79, the hinge 78 connecting the third wall portion 76 and the second cover combination structure 77, the buckle strip 79 being connected to a side of the second cover combination structure 77 away from the third wall portion 76, and the second clamping groove 80 being arranged on a side of the first wall portion 71 and the second wall portion 72 away from the third wall portion 76, the buckle strip 79 and the second clamping groove 80 being configured to be clamped with each other when the second cover combination structure 77 covers the base 1071.

[0193] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application. In particular, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized by, The application relates to a battery pack, comprising: a battery cell group comprising a plurality of battery cells arranged along a first direction; a harness isolation plate located on one side of the battery cell group along a second direction and extending along the first direction, the harness isolation plate being electrically connected to the plurality of battery cells, the harness isolation plate comprising a plurality of sub-plates and a first limiting structure, wherein the first limiting structure is configured to connect two adjacent sub-plates along the first direction and limit the relative movement of the two adjacent sub-plates in the first direction and a third direction by a preset distance, the first direction, the second direction and the third direction being perpendicular to each other; end plates arranged on opposite sides of the battery cell group along the first direction; a limiting assembly configured to fix the end of the harness isolation plate along the first direction to the end plate.

2. The battery device according to claim 1, characterized by The first limiting structure comprises: a first limiting part and a second limiting part connected to the end of the same sub-plate and arranged along the third direction, the side wall of the first limiting part close to the second limiting part having a first limiting groove; a third limiting part connected to the end of another adjacent sub-plate, the side wall of the third limiting part along the third direction having a first limiting protrusion; wherein at least one of the first limiting part and the second limiting part is elastic so that the third limiting part where the first limiting protrusion is located is inserted between the first limiting part and the second limiting part under the action of elasticity, the first limiting protrusion is limited in the first limiting groove after elastic recovery, and the first limiting protrusion in the first limiting groove is limited to move a maximum distance in the third direction; the length of the first limiting groove along the first direction is configured to allow the first limiting protrusion in the first limiting groove to move a maximum distance in the first direction.

3. The battery device of claim 2, wherein the end of the first limiting part away from the sub-plate has a first guide inclined surface, the side of the first limiting protrusion away from the sub-plate has a second guide inclined surface matched with the first guide inclined surface, and the first guide inclined surface and the second guide inclined surface are configured to abut against each other and slide relative to each other during the insertion of the first limiting protrusion between the first limiting part and the second limiting part.

4. The battery device of claim 3, wherein the side wall of the first limiting groove has a third guide inclined surface, the third guide inclined surface is arranged opposite to the second guide inclined surface of the first limiting protrusion in the first limiting groove, and the third guide inclined surface and the second guide inclined surface are configured to abut against each other during the movement of the first limiting protrusion in the first direction.

5. The battery device of claim 2, wherein The side wall of the first limiting part towards the third limiting part has a second limiting protrusion, the side wall of the third limiting part towards the first limiting part has a second limiting groove, the second limiting protrusion is configured to be clamped into the second limiting groove in the case that the first limiting protrusion is clamped into the first limiting groove, and the length dimension of the second limiting groove in the first direction is configured to allow the maximum moving distance of the second limiting protrusion in the first direction to be equal to the second distance.

6. The battery device of claim 5, wherein The second limiting protrusion is located on the side of the first limiting groove away from the sub-board where the first limiting groove is located, and the second limiting protrusion is close to the side wall of the first limiting groove to form the side wall of the first limiting groove.

7. The battery device of claim 5, wherein The first limiting protrusion is located on the side of the second limiting groove away from the sub-board where the second limiting groove is located, and the first limiting protrusion is close to the side wall of the second limiting groove to form the side wall of the second limiting groove.

8. The battery device according to any one of claims 2 to 7, characterized by, The first limiting structure includes two first limiting parts and two third limiting parts corresponding to the first limiting parts, the two first limiting parts are respectively located on both sides of the second limiting part along the third direction, and the middle line between the two first limiting parts is a first middle line.

9. The battery device of claim 8, wherein, The number of the second limiting parts is two, and the two second limiting parts are respectively arranged corresponding to the two first limiting parts. The first limiting structure further includes: A fourth limiting part connected to the same sub-board as the third limiting part, the fourth limiting part is located between the two third limiting parts and is arranged spaced apart from the third limiting parts along the third direction.

10. The battery device of claim 8, wherein, In the case that the first limiting protrusion is clamped into the first limiting groove, the two second limiting parts are respectively inserted into the gap formed by the fourth limiting part and the two third limiting parts. The first limiting structure further includes a fifth limiting part and a sixth limiting part connected to the same sub-board, and the fifth limiting part and the sixth limiting part are respectively located on the side away from each other of the two first limiting parts.

11. The battery device of any one of claims 1-7, wherein, A first avoiding space is formed between the fifth limiting part and the first limiting part adjacent to the fifth limiting part, and a second avoiding space is formed between the sixth limiting part and the first limiting part adjacent to the sixth limiting part. The wire harness isolation plate further includes:

12. The battery device of claim 11, wherein, A second limiting structure configured to connect two adjacent sub-boards along the first direction and limit the relative movement of the two adjacent sub-boards in the third direction by a preset distance; wherein the first limiting structure and the second limiting structure are connected to different positions of the two adjacent sub-boards respectively. The second limiting structure includes: A limiting plate located at the end of one of the two adjacent sub-boards, the limiting plate is provided with a limiting hole penetrating along the first direction. A third limiting protrusion is located at the end of the other of the two adjacent sub-panels, extends along the first direction and extends into the limiting hole, and the limiting hole is configured to allow the third limiting protrusion to move a third distance along the third direction.

13. The battery device of claim 11, wherein, The two sub-panels connected to each other are a first sub-panel and a second sub-panel, the first sub-panel comprises a first region and a second region adjacent along the third direction, and the second sub-panel comprises a third region and a fourth region adjacent along the third direction. The first limiting structure connects the first region and the third region, the second limiting structure connects the second region and the fourth region, and the first limiting structure and the second limiting structure are staggered along the first direction.

14. The battery device of any one of claims 1-7, wherein, The limiting assembly comprises: A limiting cavity is provided on the end plate, and the limiting cavity has an opening on the top surface of the end plate; A limiting column is connected to the opposite ends of the wire harness isolation plate along the first direction, and the limiting column is configured to extend into the limiting cavity.

15. The battery device of claim 14, wherein, The battery device further comprises: A connector is fixed to the end of the wire harness isolation plate along the first direction, wherein The limiting column is fixed to the bottom surface of the connector, so that the limiting column is connected to the wire harness isolation plate through the connector.

16. The battery device of claim 1, wherein, The end plate comprises: At least one first locking hole is provided on the side surface of the end plate; At least one second locking hole is provided on the top surface of the end plate.

17. The battery device of any one of claims 1-7, wherein, The battery device further comprises a protective cover structure, and the protective cover structure comprises: A base is fixed to the top of the end plate; A protective cover is connected to the base, and the protective cover has a first cover structure and a second cover structure, which are configured to cover the base to form a containing cavity with the base; A first rotating structure is configured to rotate the first cover structure relative to the base along a first rotating direction to realize opening and closing between the first cover structure and the base; A second rotating structure is configured to rotate the second cover structure relative to the base along a second rotating direction to realize opening and closing between the second cover structure and the base, and the first rotating direction is different from the second rotating direction.

18. The battery device of claim 17, wherein, The protective cover constitutes the first cover structure as a whole, and the protective cover has a first wall portion and a second wall portion opposite along the third direction, and the first rotating structure comprises: A rotating shaft extends along the first direction, is rotatably connected to the base, and connects the first wall portion of the protective cover; A first clamping groove is provided on the second wall portion of the protective cover; An elastic buckle matched with the first clamping groove is provided on the base, and the elastic buckle and the first clamping groove are configured to be clamped with each other when the protective cover covers the base.

19. The battery device of claim 18, wherein, The protective cover further comprises a third wall portion, the first wall portion and the second wall portion being connected to opposite ends of the third wall portion along the third direction; the second cover structure is located between the first wall portion and the second wall portion and connected to the first wall portion, the second cover structure forming a top wall of the protective cover and a fourth wall portion opposite to the third wall portion; The second rotating structure comprises: a hinge connecting the third wall portion and the second cover structure; a buckle strip connected to a side of the second cover structure away from the third wall portion; a second clamping groove matched with the buckle strip, the second clamping groove being arranged on a side of the first wall portion and the second wall portion away from the third wall portion, the buckle strip and the second clamping groove being configured to be clamped with each other when the second cover structure covers the base.

20. An electrical device, comprising: The power consumption device comprises the battery device according to any one of claims 1-19, the battery device being used to provide electric energy.

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