Battery device and electric equipment

Abstract

The utility model discloses a battery device and electric equipment, relates to the technical field of batteries, and can enable a separation structure to be kept at a separation position for a long time so as to meet the interval distribution design of battery monomers. The battery device comprises a frame body, at least two battery monomers and a separator, wherein the frame body comprises at least two opposite side plates; the at least two battery monomers are positioned in the frame body and are arranged along a first direction; the separator is arranged between two adjacent battery monomers in the first direction, the separator comprises a frame part and a supporting part, the frame part is arranged corresponding to the battery monomers, and the supporting part is connected outside the frame part and is connected with at least one side plate.

Description

TECHNICAL FIELD

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

[0002] In the production process of lithium battery, a plurality of battery monomers need to be stacked together, and a separation structure needs to be arranged between adjacent battery monomers.

[0003] In the related art, the separation structure is pasted on the battery monomer, and the separation structure can be clamped between two battery monomers by stacking the plurality of battery monomers in sequence.

[0004] However, in the use process, the separation structure pasted on the battery monomer is easy to fall off, and therefore how to ensure that the separation structure can be kept in the separation position for a long time to meet the interval distribution design of the battery monomer is a problem to be solved at present. CONTENT OF THE UTILITY MODEL

[0005] To solve the above technical problems, the present application provides a battery device and an electric equipment, so that the separation structure can be kept in the separation position for a long time to meet the interval distribution design of the battery monomer.

[0006] The present application is implemented through the following technical solutions.

[0007] The first aspect of the present application provides a battery device, which comprises a frame, at least two battery monomers and a separation piece. The frame comprises at least two opposite side plates. The at least two battery monomers are located in the frame and arranged along a first direction. The separation piece is arranged between two adjacent battery monomers in the first direction. The separation piece comprises a frame part and a support part. The frame part is arranged corresponding to the battery monomer. The support part is connected to the outside of the frame part and connected with at least one side plate.

[0008] In the technical solution of the embodiment of the present application, the support part can provide support for the frame part, so that the frame part can be positioned in the central position relative to the battery monomer, that is, the support part can prevent the frame part from being misaligned. The presence of the support part can stabilize the separation piece in the effective separation position. Specifically, the two sides of the frame part are provided with the support part, and the ends of the two support parts away from the frame part are respectively connected with the two side plates. Under the support of the two side support parts, the frame part cannot be misaligned in the width direction of the battery device. Moreover, because the two support parts are connected with the side plates, the side plates can also provide positioning for the support part in the height direction of the battery device, so that the support part can provide support for the frame part in the height direction of the battery device, avoiding the misalignment of the frame part in the width direction of the battery device, and further stabilizing the separation piece in the effective separation position to prevent the contact of the two adjacent battery monomers due to the misalignment of the separation piece.

[0009] Therefore, the partition piece provided in the application can be reliably positioned through the support part, so that the partition piece can be stably positioned at the effective partition position without the aid of the connection relationship with the battery monomer, thereby avoiding dislocation or even disengagement of the partition piece during long-term use of the battery device, solving the technical problems of poor partition reliability of the partition structure and inability of the partition structure to be long-term maintained at the effective partition position in the related art, and further achieving the technical effect of ensuring that the partition structure can be long-term maintained at the effective partition position and meeting the design requirement of interval distribution of the battery monomers.

[0010] In some embodiments of the application, one of the side plates and the support part is provided with a groove, and the other is provided with a matching protrusion, and the support part is detachably connected with the corresponding side plate.

[0011] Here, by providing the matching protrusion and the groove, the technical effect of enabling the partition piece to be maintained at the effective partition position and meeting the design requirement of interval distribution of the battery monomers is achieved. The detachable connection of the partition piece and the side plate achieves the technical effects of reducing the maintenance difficulty of the battery device and improving the assembly flexibility of the battery device.

[0012] In some embodiments of the application, at least one of the side plates is provided with a groove, and the groove penetrates the side plate along the first direction, and the end of the support part forms a matching protrusion, and the matching protrusion is slidably connected to the groove.

[0013] Here, the technical effects of improving the assembly flexibility of the battery device and reducing the assembly difficulty of the battery device are achieved. Moreover, the structure of the slide formed by the groove has low complexity, which can improve the stability during long-term use.

[0014] In some embodiments of the application, in the first direction, the groove includes a guide segment and a sliding segment that are in communication with each other, the guide segment is arranged at at least one outer edge of the side plate, the width of the sliding segment is adapted to the width of the matching protrusion, and the width of the guide segment is larger toward the outside of the side plate.

[0015] Here, by providing the guide segment, the technical effects of providing convenient conditions for assembly of the partition piece, reducing the assembly difficulty of the partition piece, and improving the assembly efficiency of the partition piece are achieved.

[0016] In some embodiments of the application, the side surface of the guide segment is an outwardly convex arc surface structure.

[0017] Here, by setting the side surface of the guide segment as an arc surface, the difficulty of assembling the matching protrusion can be reduced. Moreover, the introduction stroke of the guide segment is shortened, thereby reducing the length occupied by the guide segment on the side plate. The technical effects of reducing the assembly difficulty of the matching protrusion and improving the utilization rate of the groove in the first direction are achieved.

[0018] In some embodiments of the present application, the cross section of the recess is rectangular, and the cross section of the matching protrusion is rectangular or circular.

[0019] Here, in the case that the cross section of the matching protrusion is rectangular, the positioning accuracy of the matching protrusion by the recess, the positioning accuracy of the lifting partition, the possibility of mispositioning of the partition, and the possibility of loosening and abnormal sound of the partition are reduced.

[0020] In the case that the cross section of the matching protrusion is circular, on the one hand, the difficulty of the matching protrusion being loaded into the sliding section can be further reduced, and on the other hand, the sliding resistance of the matching protrusion in the recess can be reduced, so that the partition can smoothly slide in the first direction, thereby reducing the disassembly difficulty of the partition and improving the error compensation accuracy of the partition in the first direction.

[0021] In some embodiments of the present application, the two side plates are each provided with a recess, the support part is at least two and is located at both sides of the frame part, and the at least two support parts are respectively matched with the recesses of the two side plates.

[0022] Here, the double-side support of the frame part can be achieved, thereby improving the positioning reliability of the frame part, reducing the probability of mispositioning of the frame part, enabling the frame part to be centered relative to the battery monomer, and thereby achieving the technical effect of keeping the partition in the effective partition position for a long time and meeting the battery monomer partition setting requirement.

[0023] In some embodiments of the present application, along the height direction of each side plate, the recess on each side plate is at least two, and the number and position of the support part correspond to the recess one by one.

[0024] Here, the side plate can provide accurate positioning for the partition, avoid the partition from being turned over, on the one hand, improve the partitioning reliability of the partition to the battery monomer, and on the other hand, reduce the probability of jamming of the partition in the first direction, and improve the thickness error compensation accuracy of the partition to the battery monomer. Moreover, by arranging multiple support parts on each side of the frame part, the weight of the partition can be distributed to multiple recesses, thereby reducing the wear of a single recess and prolonging the service life of the battery device.

[0025] In some embodiments of the present application, a row of battery monomers is arranged in the frame along the first direction, and the frame part is a square structure, and along the first direction, the projection of the frame part falls into the side wall of the battery monomer.

[0026] Here, the coverage range of the edge of the frame part on the side wall can be expanded, thereby improving the partitioning effect of the frame part on the two adjacent battery monomers, avoiding the battery monomers from being skewed and contacting, and thereby achieving the technical effects of improving the partitioning reliability of the partition to the battery monomer and reducing the failure rate of the battery device.

[0027] On this basis, by limiting the projection of the frame part to fall within the side wall, the frame part can be arranged centrally relative to the battery monomer, thereby improving the support reliability of the frame part to the battery monomer in the first direction, reducing the probability of the battery monomer being skewed and contacting, and also achieving the technical effects of improving the separation reliability of the separator to the battery monomer and reducing the failure rate of the battery device.

[0028] In some embodiments of the present application, the battery monomers arranged in the first direction in the frame body form a battery monomer row, at least two battery monomer rows are arranged in the second direction in the frame body, and the frame part comprises at least two square units connected in the second direction, and the square units are arranged one-to-one corresponding to the battery monomer rows.

[0029] Here, by arranging multiple battery monomer rows, the space in the frame body can be fully utilized, thereby increasing the number of battery monomers arranged inside without changing the size of the frame body, and further achieving the technical effect of improving the energy density of the battery device.

[0030] On this basis, by arranging square units on the separator corresponding to the number of battery monomer rows, the separator can be stably arranged at the effective separation position, thereby achieving the technical effect of meeting the spacing arrangement requirements of the battery monomers.

[0031] In some embodiments of the present application, the frame body comprises at least two opposite end plates and two side plates, the two side plates and the two end plates are connected in sequence, and the inner wall of at least one end plate is provided with a profiled recess corresponding to the battery monomer and adapted to the expanded form of the battery monomer in the first direction.

[0032] Here, by arranging two end plates in cooperation with the side plates, the battery monomers can be protected in all directions in the circumferential direction of the battery monomers, thereby reducing the probability of damage to the battery monomers by external impact, and further achieving the technical effects of improving the safety and reliability of the battery device.

[0033] On this basis, by arranging a profiled recess on the end plate, additional expansion space can be provided for the battery monomer in the first direction, thereby reducing the overall expansion force in the first direction and reducing the possibility of the weld of the end plate being disconnected under the expansion force, thereby achieving the technical effects of improving the structural stability of the battery device and reducing the failure rate of the battery device.

[0034] In some embodiments of the present application, the bottom surface of the profiled recess is a stepped surface, and the height of the stepped surface decreases step by step in the direction from the edge of the bottom surface to the middle of the bottom surface.

[0035] Here, by setting the stepped surface, the recessed shape of the profiling recess can be adapted to the outer convex shape of the battery monomer, so as to provide sufficient expansion space for the battery monomer, reduce the expansion force of the battery monomer on the end plate, reduce the possibility of cracking of the end plate weld, and thus realize the technical effects of improving the structural stability of the battery device and reducing the failure rate of the battery device.

[0036] In some embodiments of the present application, the bottom surface of the profiling recess is a curved surface.

[0037] Here, by setting the curved surface, the recessed shape of the profiling recess can be adapted to the outer convex shape of the battery monomer, so as to provide sufficient expansion space for the battery monomer, reduce the expansion force of the battery monomer on the end plate, reduce the possibility of cracking of the end plate weld, and thus realize the technical effects of improving the structural stability of the battery device and reducing the failure rate of the battery device.

[0038] In some embodiments of the present application, the materials of the frame part and the support part are different, and the rigidity of the support part is greater than that of the frame part.

[0039] Here, by setting the support part with high rigidity, the support effect of the support part on the frame part can be improved by reducing the deformation amplitude of the support part, so as to improve the positioning accuracy of the frame part, and the frame part can be centrally arranged relative to the battery monomer, and thus the technical effects of enabling the partition to be stably arranged at the effective partition position for a long time and meeting the interval arrangement requirement of the battery monomers can be realized.

[0040] The second aspect of the present application provides a power utilization equipment comprising the battery device provided in any of the above embodiments.

[0041] In the technical scheme of the embodiments of the present application, since the battery device in any of the above embodiments is included, the same beneficial effects can be achieved. That is, the battery monomers can be kept at the partition position for a long time, and the interval distribution design of the battery monomers can be met. BRIEF DESCRIPTION OF DRAWINGS

[0042] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not intended to limit the scope of the present application. Moreover, the same reference numerals are used throughout the various drawings to represent similar components. In the drawings:

[0043] Figure 1 A structural schematic diagram of the power utilization equipment provided in the embodiments of the present application is shown in FIG. 1.

[0044] Figure 2 An exploded schematic diagram of the battery device provided in the embodiments of the present application is shown in FIG. 2.

[0045] Figure 3 A structural schematic diagram of the battery device provided in the embodiments of the present application is shown in FIG. 3.

[0046] Figure 4 for Figure 3 a perspective view;

[0047] Figure 5 a structural schematic view of a battery device provided by an embodiment of the present application;

[0048] Figure 6 a structural schematic view of a battery device provided by an embodiment of the present application;

[0049] Figure 7 a structural schematic view of a battery device provided by an embodiment of the present application;

[0050] Figure 8 a structural schematic view of a separator of a battery device provided by an embodiment of the present application;

[0051] Figure 9 a structural schematic view of a battery device provided by an embodiment of the present application;

[0052] Figure 10 a structural schematic view of a battery device provided by an embodiment of the present application;

[0053] Figure 11 a structural schematic view of a separator of a battery device provided by an embodiment of the present application;

[0054] Figure 12 a structural schematic view of a separator of a battery device provided by an embodiment of the present application;

[0055] Figure 13 a structural schematic view of a separator of a battery device provided by an embodiment of the present application;

[0056] Figure 14 a structural schematic view of a battery device provided by an embodiment of the present application;

[0057] Figure 15 a structural schematic view of a separator of a battery device provided by an embodiment of the present application;

[0058] Figure 16 a structural schematic view of an end plate of a battery device provided by an embodiment of the present application;

[0059] Figure 17 a structural schematic view of an end plate of a battery device provided by an embodiment of the present application.

[0060] BRIEF DESCRIPTION OF THE DRAWINGS

[0061] 1000 - electrical equipment; 100 - battery device; 110 - case; a - cavity; 111 - first case portion; 112 - second case portion; 113 - frame; 114 - side plate; 115 - groove; 1151 - guide section; 1152 - sliding section; 116 - end plate; 1161 - profiling recess; 1162 - step surface; 1163 - curved surface; 120 - battery cell; 122 - battery cell row; 130 - partition; 131 - frame portion; 1311 - square unit; 132 - support portion; 1321 - fitting protrusion; 200 - controller; 300 - motor; X - first direction; Y - height direction; Z - second direction. DETAILED DESCRIPTION

[0062] The embodiments of the technical solutions of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0063] 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 "include" and "have" and any variations thereof used in the specification and the claims and the above description of drawings are intended to cover the inclusion not the exclusion of one or more elements.

[0064] In the description of the embodiments of the present application, the technical terms "first", "second", "third" and the like are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly and specifically limited.

[0065] 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 present application. The appearance 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 other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0066] 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 the "or" relationship between the front and rear associated objects.

[0067] In the description of the embodiments of the present application, the orientations or positional relationships indicated by the technical terms "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "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, operated or used in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0068] 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, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can 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.

[0069] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical term "contacting" should be understood broadly, which can be direct contact or contact through an intermediate medium layer, and can be contact between two objects in contact without interaction force, or can be contact between two objects in contact with interaction force.

[0070] Next, the present application will be described in detail.

[0071] New energy batteries are increasingly widely used in life and industry. For example, new energy vehicles equipped with batteries have been widely used, and batteries are also increasingly used in energy storage fields and the like.

[0072] In the related art, a battery device includes a frame, a battery cell, and a separation structure. The battery cell is arranged inside the frame, and the frame can provide shielding and protection for the battery cell. In order to improve the energy density, a plurality of battery cells need to be arranged in the frame, and the plurality of battery cells are arranged in a stacked manner along a first direction.

[0073] For a plurality of stacked battery monomers, two adjacent battery monomers in the first direction need to be spaced apart, in order to meet this spacing requirement, a separation structure needs to be clamped between the two adjacent battery monomers. Among them, the separation structure arranged centrally relative to the battery body can effectively separate the battery body on both sides, avoiding contact between the two battery bodies, and the central position is the effective separation position. In order to ensure that the separation structure can be positioned at the separation position, the separation structure is selected to be centrally bonded on the battery body, and the battery body and the separation structure bonded thereon form a stacked unit during assembly. Stacking a plurality of stacked units along the first direction can separate any two adjacent battery units by the separation structure.

[0074] However, the separation structure will be heated by the high-temperature battery monomer and pressed by the expanded battery monomer during the operation of the battery device. In this high-temperature and high-pressure environment, the separation structure is easy to fall off, which leads to the separation structure deviating from the above effective separation position, damaging the separation effect of the battery monomer, and increasing the failure rate of the battery device. To this end, the separation structure needs to be improved so that the separation structure can be long-term stable in the effective separation position and ensure the long-term effectiveness of the separation function of the separation structure.

[0075] Based on such a design concept, the application provides a battery device and an electric equipment, so that the separation structure can be long-term maintained in the separation position, and the interval distribution design of the battery monomer is met.

[0076] The application provides a battery device 100, which comprises a frame 113, at least two battery monomers 120 and a separation piece 130. The frame 113 comprises at least two opposite side plates 114. The at least two battery monomers 120 are located in the frame 113 and arranged along a first direction X. The separation piece 130 is arranged between two adjacent battery monomers 120 in the first direction X. The separation piece 130 comprises a frame part 131 and a support part 132. The frame part 131 is arranged corresponding to the battery monomer 120. The support part 132 is connected to the outside of the frame part 131 and connected with at least one side plate 114.

[0077] In the technical solutions of the embodiments of the present application, the support part 132 can provide support for the frame part 131, so that the frame part 131 can be positioned at a position that is centered relative to the battery monomer 120, that is, the support part 132 can prevent the frame part 131 from being mispositioned, and the presence of the support part 132 can enable the partition 130 to be stabilized at the effective partition position. Specifically, the frame part 131 is provided with the support part 132 on both sides, and the ends of the two support parts 132 away from the frame part 131 are connected with the two side plates 114 respectively. Under the support of the support parts 132 on both sides, the frame part 131 cannot be mispositioned in the width direction of the battery device 100. Moreover, because the two support parts 132 are connected with the side plates 114, the side plates 114 can also provide positioning for the support parts 132 in the height direction Y of the battery device 100, so that the support parts 132 can provide support for the frame part 131 in the height direction Y of the battery device 100, to prevent the frame part 131 from being mispositioned in the width direction of the battery device 100, and thus enable the partition 130 to be stabilized at the effective partition position and prevent the adjacent two battery monomers 120 from being in contact due to mispositioning of the partition 130.

[0078] Therefore, the partition 130 proposed in the present application can be reliably positioned through the support part 132, so that the partition 130 can be stabilized at the effective partition position without the aid of the connection relationship between the partition 130 and the battery monomer 120, and mispositioning or even falling out of the partition 130 during long-term use of the battery device 100 is avoided, thereby solving the technical problems of poor partitioning reliability of the partition structure and the inability of the partition structure to be kept at the effective partition position for a long time in the related art, and further achieving the technical effect of keeping the partition structure at the effective partition position for a long time, to meet the design requirement of the interval distribution of the battery monomers 120.

[0079] The embodiments of the present application also provide a power utilization device, which comprises the battery device for providing electric energy described above. The power utilization device can be, but is not limited to, a mobile phone, a tablet computer, a notebook computer, an electric toy, an electric tool, an electric vehicle, an electric automobile, a ship, a spacecraft, etc. The electric toy can include a fixed or mobile electric toy, such as a game console, an electric automobile toy, an electric ship toy, an electric aircraft toy, etc. The spacecraft can include an airplane, a rocket, a space shuttle, a spacecraft, etc.

[0080] In the following embodiments, for the convenience of description, the power utilization device of an embodiment of the present application is taken as a vehicle for example.

[0081] Figure 1 A structural schematic diagram of a power utilization device 1000 is provided for some embodiments of the present application. The power utilization device 1000 can be a fuel automobile, a gas automobile or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid electric automobile or a range extended automobile, etc. As shown in FIG. 1, the power utilization device 1000 comprises a battery device 100 and a vehicle body 1000a. The battery device 100 is arranged in the vehicle body 1000a. Figure 1As shown, the battery apparatus 100 is internally arranged in the electrical equipment 1000, and can be arranged at the bottom, head or tail of the electrical equipment 1000. The battery apparatus 100 can be used for power supply of the electrical equipment 1000, for example, the battery apparatus 100 can be used as the operating power supply of the electrical equipment 1000. The electrical equipment 1000 can further include a controller 200 and a motor 300, and the controller 200 is used to control the battery apparatus 100 to supply power to the motor 300, for example, for the working power demand of the electrical equipment 1000 during starting, navigation and driving.

[0082] In some embodiments of the present application, the battery apparatus 100 can not only be used as the operating power supply of the electrical equipment 1000, but also be used as the driving power supply of the electrical equipment 1000, instead of or partially instead of fuel or natural gas to provide driving power for the electrical equipment 1000.

[0083] Figure 2 An explosion schematic diagram of the battery apparatus 100 provided in some embodiments of the present application is shown; the battery apparatus 100 (Battery Apparatus) mentioned in the embodiments of the present application can further include one or more battery cell assemblies (not shown in the figure, please refer to the combination of the plurality of battery cells 120) for providing voltage and capacity. The battery cell assembly (Battery Cell Assembly) can include a plurality of battery cells 120, and the plurality of battery cells 120 are connected in series, parallel or mixed connection through the busbar component.

[0084] In some embodiments, the battery cell assembly (Battery Cell Assembly) is usually formed by a plurality of battery cell rows 122; as an example, the battery cell assembly can be a battery module (Battery Module), and the battery module is formed by a plurality of battery cell rows 122 and fixed to form an independent module. As an example, the battery module can be formed by bundling a plurality of battery cells 120 by a cable tie.

[0085] In some embodiments, as shown, Figure 2 The battery apparatus 100 can be a battery pack (battery Pack), and the battery pack includes a box body 110 and one or more battery cell assemblies, and the battery cell assemblies are accommodated in the cavity a.

[0086] As an example, the battery cell assembly can be a battery module, and the battery cell assembly can be accommodated in the cavity a by fixing the battery module in the cavity a.

[0087] As an example, the battery cell assembly can also be accommodated in the cavity a by directly fixing a plurality of battery cells 120 in the cavity a.

[0088] As an example, as shown, Figure 2As shown, the housing 110 may include a first housing portion 111 and a second housing portion 112. The first housing portion 111 and the second housing portion 112 are fastened together, forming a closed space, or cavity a, inside the housing 110 to house the battery cell assembly. Here, "closed" refers to covering or closing, which can be either sealed or unsealed. The first housing portion 111 may be a top cover or a bottom plate.

[0089] In this embodiment of the application, the battery cell 120 can be a secondary battery, which refers to a battery cell that can be used again after being discharged by recharging to activate the active materials.

[0090] The battery cell 120 can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments of this application are not limited to this.

[0091] Additionally, by way of example, the battery cell 120 can be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or a battery cell of other shapes. Prismatic battery cells include prismatic battery cells, blade-shaped battery cells, and multi-prismatic battery cells, such as hexagonal prismatic battery cells. There are no particular limitations in the embodiments of this application.

[0092] Below, refer to Figures 3 to 17 Some embodiments of this application will be described in detail.

[0093] In some embodiments of this application, reference is made to Figure 3 , Figure 4 and Figure 5 , Figure 3 This is a schematic diagram of the structure of the battery device 100 provided in the embodiments of this application; Figure 4 for Figure 3 Perspective view; Figure 5 A schematic diagram of the structure of the battery device 100 provided in the embodiments of this application:

[0094] This application provides a battery device 100, which includes: a frame 113, at least two battery cells 120, and a separator 130. The frame 113 includes at least two opposing side plates 114. The at least two battery cells 120 are located inside the frame 113 and are arranged along a first direction X. The separator 130 is disposed between two adjacent battery cells 120 in the first direction X. The separator 130 includes a frame portion 131 and a support portion 132. The frame portion 131 is disposed corresponding to the battery cell 120, and the support portion 132 is connected to the outside of the frame portion 131 and is connected to at least one side plate 114.

[0095] The battery cell 120 is an energy storage unit in the battery device 100. The battery cell 120 can be a secondary battery, which refers to a battery cell 120 that can be activated by charging after discharging.

[0096] The battery cell 120 can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel-hydrogen battery, a nickel-cadmium battery, a lead-acid battery, etc. The present application is not limited thereto.

[0097] To improve the energy storage capacity, the battery device 100 includes a plurality of battery cells 120. At least part of the plurality of battery cells 120 is distributed along the first direction X to form a battery cell row 122. The first direction X is the arrangement direction of the plurality of battery cells 120 in the battery cell row 122. In the embodiments of the present application, the first direction X corresponds to the length direction of the battery device 100.

[0098] The frame 113 is at least part of the lower box 110 in the battery device 100. The plurality of battery cells 120 is arranged in the frame 113. The frame 113 can provide shielding protection outside the battery cell 120. On the one hand, the shielding protection can avoid direct impact of external force on the battery cell 120. On the other hand, the shielding protection can form an insulating protection layer outside the battery cell 120.

[0099] The frame 113 includes at least two side plates 114. The two side plates 114 are oppositely arranged with a space in between. The plurality of battery cells 120 is arranged in the space between the two side plates 114, i.e. the side plates 114 can provide protection on both sides of the battery cell 120. In the embodiments of the present application, the two side plates 114 are arranged with a space in the width direction of the battery device 100, i.e. the distribution direction of the two side plates 114 is perpendicular to the distribution direction of the plurality of battery cells 120 in a battery cell row 122. To ensure that the side plates 114 can effectively protect the battery cell 120, the height of the side plates 114 should be greater than or equal to the height of the battery cell 120, and the length of the side plates 114 should be greater than or equal to the length of any battery cell row 122.

[0100] The separator 130 is a separation structure in the battery cell row 122. The separator 130 is arranged between two adjacent battery cells 120 along the first direction X. In the battery cell row 122, a separator 130 is arranged between any two adjacent battery cells 120 to prevent the two adjacent battery cells 120 from contacting each other, thereby meeting the requirement of spacing arrangement of the battery cell 120 and providing a guarantee for the safety of the battery device 100.

[0101] The separator 130 has certain strength and rigidity. The battery cells 120 will swell during operation. The two swollen battery cells 120 will press the separator 130 therebetween. The separator 130 with sufficient strength can reversibly deform under the pressing of the two battery cells 120, but the deformation amount needs to be controlled within a range that will not cause the two battery cells 120 to contact each other.

[0102] The separator 130 includes a frame portion 131 and a support portion 132. The frame portion 131 is centrally arranged on the side of the battery cells 120. The two adjacent battery cells 120 can be separated by the frame portion 131. The position at which the frame portion 131 is centered is the effective separation position. The frame portion 131 is centrally arranged to balance the stress of the battery cells 120 and avoid the battery cells 120 from being skewed.

[0103] Specifically, when the frame portion 131 is not centered, the separator 130 will fail. For example, when the frame portion 131 is skewed to one side and adheres to one side plate 114, the area of the battery cell 120 close to the other side plate 114 cannot be supported by the frame portion 131. At this time, the side edges of the two battery cells 120 will be skewed inward, causing the side edges of the two battery cells 120 to contact each other, and the separator 130 will fail. Alternatively, when the frame portion 131 is skewed downward, the upper halves of the two adjacent battery cells 120 cannot be supported by the frame portion 131. At this time, the top edges of the two battery cells 120 will be skewed inward, causing the top edges of the two battery cells 120 to contact each other, and the separator 130 will fail.

[0104] The support portion 132 is arranged outside the frame portion 131. One end of the support portion 132 is connected to the frame portion 131. One side of the support portion 132 is connected to the frame portion 131. The other side of the support portion 132 is connected to at least one side plate 114. For example, the support portion 132 can be in the shape of a straight rod. The straight rod-shaped support portion 132 connects the frame portion 131 and one side plate 114. Alternatively, the support portion 132 is in the shape of a half ring. The inner ring surface of the half ring-shaped support portion 132 is connected to the frame portion 131. The two ends are respectively connected to the two side plates 114. In this regard, the shape of the support portion 132 is not rigidly limited in the present application, as long as it can meet the connection requirements of the frame portion 131 and the side plate 114.

[0105] In the technical scheme of the embodiments of the present application, the support portion 132 can provide support to the frame portion 131, so that the frame portion 131 can be positioned at a centered position relative to the battery cells 120. That is, the support portion 132 can prevent the frame portion 131 from being misaligned. The presence of the support portion 132 can stabilize the separator 130 at the effective separation position. Specifically, referring to Figure 3 and Figure 4The two sides of the frame part 131 are provided with support parts 132, and the ends of the two support parts 132 away from the frame part 131 are connected with the two side plates 114 respectively. Under the support of the two support parts 132 on the two sides, the frame part 131 cannot be dislocated in the width direction of the battery device 100. Moreover, because the two support parts 132 are connected with the side plates 114, the side plates 114 can also provide positioning for the support parts 132 in the height direction Y of the battery device 100, so that the support parts 132 can provide support for the frame part 131 in the height direction Y of the battery device 100, avoiding dislocation of the frame part 131 in the width direction of the battery device 100, and thus enabling the separator 130 to be stably positioned at the effective separation position, preventing the adjacent two battery monomers 120 from contacting due to dislocation of the separator 130.

[0106] Therefore, the separator 130 provided in the application can be reliably positioned through the support part 132, so that the separator 130 can be stably positioned at the effective separation position without the aid of the connection relationship with the battery monomer 120, avoiding dislocation or even falling out of the separator 130 during long-term use of the battery device 100, thereby solving the technical problems of poor separation reliability of the separation structure and the separation structure failing to be kept at the effective separation position for a long time in the related art, and further achieving the technical effect of keeping the separation structure at the effective separation position for a long time, meeting the design requirement of interval distribution of the battery monomers 120.

[0107] Reference Figure 6 , Figure 7 and Figure 8 , Figure 6 a structural schematic view of the battery device 100 provided in an embodiment of the application; Figure 7 a structural schematic view of the battery device 100 provided in an embodiment of the application; Figure 8 a structural schematic view of the separator 130 of the battery device 100 provided in an embodiment of the application;

[0108] In some embodiments of the application, one of the side plate 114 and the support part 132 is provided with a groove 115, and the other is provided with a matching protrusion 1321. The support part 132 is detachably connected with the corresponding side plate 114.

[0109] In this embodiment, the side plate 114 and the support part 132 are detachably connected through the groove 115 and the matching protrusion 1321. Reference Figure 7 and Figure 8The one side of the support part 132 facing the side plate 114 is provided with a groove 115, and the one side of the side plate 114 facing the battery monomer 120 is provided with a strip-shaped matching protrusion 1321. In the assembly process, the support part 132 needs to be sleeved on the matching protrusion 1321 through the groove 115.

[0110] Therefore, by arranging the matching protrusion 1321 and the groove 115, the support part 132 can provide positioning support for the frame part 131, so that the frame part 131 can be arranged centrally relative to the battery monomer 120, thereby realizing that the partition piece 130 can be kept in the effective partition position, and meeting the technical effect of meeting the design requirement of the interval distribution of the battery monomer 120.

[0111] Correspondingly, the disassembly of the partition piece 130 can be completed by withdrawing the matching protrusion 1321 from the groove 115, realizing the detachable connection of the partition piece 130 and the side plate 114, so that the user can replace a new partition piece 130 when the partition piece 130 fails, or replace a partition piece 130 with other thickness when the thickness of the partition piece 130 cannot meet the assembly requirement of the battery monomer 120, thereby realizing the technical effect of reducing the maintenance difficulty of the battery device 100 and improving the assembly flexibility of the battery device 100 by flexibly compensating the error caused by the thickness of the battery cell through different models of the partition piece 130.

[0112] In an alternative embodiment, the one side of the support part 132 facing the side plate 114 is provided with a groove 115, and the one side of the side plate 114 facing the battery monomer 120 is provided with a strip-shaped matching protrusion 1321. In the assembly process, the support part 132 needs to be sleeved on the matching protrusion 1321 through the groove 115.

[0113] Reference Figure 6 , Figure 7 and Figure 8 In some embodiments of the present application, at least one side plate 114 is provided with a groove 115, and the groove 115 penetrates the side plate 114 along the first direction X. The end of the support part 132 forms a matching protrusion 1321, and the matching protrusion 1321 is slidably connected to the groove 115.

[0114] The groove 115 is formed on the side of the side plate 114 facing the battery monomer 120, and the supporting part 132 is formed with a matching protrusion 1321 matching the groove 115 at one end away from the frame part 131.

[0115] The groove 115 extends along the first direction X on the side plate 114, that is, the groove 115 extends in the length direction of the battery device 100 and the side plate 114. Moreover, the groove 115 penetrates the side plate 114, and the groove 115 forms an opening at both edges of the side plate 114.

[0116] Specifically, the matching protrusion 1321 can be inserted into the groove 115 through the opening at both ends of the groove 115 to complete the assembly of the partition 130. Correspondingly, when the partition 130 needs to be disassembled, the matching protrusion 1321 is withdrawn from the opening of the groove 115.

[0117] Therefore, the groove 115 penetrating the side plate 114 along the first direction X can meet the disassembly requirement of the partition 130, and the disassembly method under this structure is relatively simple, the structural complexity is low, and it is beneficial to reduce the disassembly difficulty of the partition 130 and the processing difficulty of the partition 130 and the side plate 114.

[0118] On this basis, the matching protrusion 1321 can slide along the groove 115, that is, the position of the partition 130 in the first direction X can be adjusted by the sliding action.

[0119] In the related art, there is a technical solution that a fixed partition structure is arranged to divide multiple unadjustable mounting positions, and each mounting position is used to accommodate a battery monomer. However, the thickness error of the battery monomer is inevitable, which will affect the assembly of the battery monomer, resulting in the technical problems that the battery monomer cannot effectively fill the mounting position, wasting the mounting space, or the battery monomer cannot be installed in the mounting position, and the mounting position is invalid.

[0120] To this end, the partition 130 in the present application can slide in the first direction X by the matching protrusion 1321 and the groove 115, and the first direction X corresponds to the thickness direction of the battery monomer 120, so that the partition 130 can compensate for the thickness error of the battery monomer 120 by sliding, ensuring that each battery monomer 120 can be configured with a mounting space corresponding to its thickness, thereby solving the above technical problems of wasting mounting space and the battery monomer 120 cannot be installed, and further achieving the technical effects of improving the assembly flexibility of the battery device 100 and reducing the assembly difficulty of the battery device 100. Moreover, the structure of the sliding groove formed by the groove 115 has low structural complexity, which can improve the stability during long-term use.

[0121] To improve the assembly precision of the battery cell, a sliding structure between the separator 130 and the side plate 114 is designed. The core function of the sliding structure is to enable the separator 130 to slide along the groove 115, dynamically compensating for the size deviation of the shell of the battery monomer 120 due to processing tolerance, material characteristics or environmental factors: whether the shell is slightly expanded or the assembly alignment error, the sliding allowance of the separator 130 can adjust the fit clearance in real time to avoid positioning deviation. This not only reduces the requirement for the processing precision of the shell of the battery monomer 120, but also maintains stable fit in batch assembly, ensuring the consistency and reliability of assembly, laying a foundation for subsequent processes.

[0122] In an alternative embodiment, the width of the groove 115 ranges from greater than or equal to 5 mm to less than or equal to 10 mm.

[0123] In the width direction of the groove 115, the fit error between the fit protrusion 1321 and the groove 115 ranges from greater than or equal to 1 mm to less than or equal to 2 mm.

[0124] Reference Figure 6 、 Figure 7 、 Figure 9 and Figure 10 , Figure 9 The structure schematic diagram of the battery device 100 provided by the embodiments of the present application is shown in FIG. 1. Figure 10 The structure schematic diagram of the battery device 100 provided by the embodiments of the present application is shown in FIG. 1. In some embodiments of the present application, in the first direction X, the groove 115 includes a guide segment 1151 and a sliding segment 1152 that are in communication with each other, the guide segment 1151 is arranged at at least one outer edge of the side plate 114, the width of the sliding segment 1152 is adapted to the width of the fit protrusion 1321, and the width of the guide segment 1151 is larger as it is farther away from the side plate 114.

[0125] In the first direction X, the groove 115 includes a sliding segment 1152 and at least one guide segment 1151 that are in communication with each other. The width of the sliding segment 1152 is adapted to the width of the fit protrusion 1321, and the fit protrusion 1321 is transitionally fitted with the groove 115 or the fit protrusion 1321 is gap-fitted with the groove 115, so that the sliding segment 1152 can guide the separator 130 to slide in the first direction X.

[0126] The inner end of the guide segment 1151 is in communication with the sliding segment 1152, and the outer end of the guide segment 1151 is located at the edge of the side plate 114 and forms the aforementioned opening at the edge of the side plate 114. During assembly, the fit protrusion 1321 is first assembled into the guide segment 1151, and then slides into the sliding segment 1152.

[0127] The width of the guide section 1151 is larger closer to the outer side of the side plate 114, that is, the width of the guide section 1151 gradually increases in the direction from the sliding section 1152 to the opening, forming an outwardly expanding flared structure. Specifically, the width of the inner end of the guide section 1151 is the same as the width of the sliding section 1152, and the width of the outer end at the edge is larger than the width of the sliding section 1152.

[0128] By providing the guide section 1151, convenient conditions can be provided for the assembly of the partition 130. Specifically, the fitting protrusion 1321 can be first loaded into the guide section 1151, and the guide section 1151 with a larger width can preliminarily position the fitting protrusion 1321, reducing the difficulty of loading the fitting protrusion 1321. Then, the guide section 1151 with the width gradually decreasing from the outside to the inside can guide the fitting protrusion 1321 into the sliding section 1152, avoiding the fitting protrusion 1321 from being stuck on the outside of the sliding section 1152. Further, the technical effects of reducing the assembly difficulty of the partition 130 and improving the assembly efficiency of the partition 130 are achieved.

[0129] Specifically, in an alternative embodiment, the guide section 1151 is provided only at one edge of the side plate 114, and in this case, the partition 130 is disassembled and assembled from a single side of the frame 113.

[0130] In an alternative embodiment, the guide section 1151 is provided at both front and rear edges of the side plate 114, that is, both ends of the sliding section 1152 are connected with the guide section 1151, and in this case, the partition 130 can be disassembled and assembled from both front and rear sides of the frame 113, thereby improving the disassembly and assembly degree of freedom of the partition 130 and reducing the disassembly and assembly difficulty of the partition 130.

[0131] Specifically, the side surface of the guide section 1151 includes a single inclined plane, or multiple planes with different inclination angles, or a single arc surface, or multiple arc surfaces with different curvatures, or a combination of planes and curved surfaces 1163. In this regard, the shape of the guide section 1151 is not rigidly limited in the embodiments of the present application, and only the requirement that the width of the guide section 1151 gradually increases from the inside to the outside needs to be met.

[0132] Specifically, the guide section 1151 is designed as a flared mouth, which can improve the jamming problem of the partition 130 during assembly. The guide section 1151 can reduce rigid collision and reduce the demand for thrust, so that the partition 130 can be smoothly embedded into the sliding section 1152 without deliberate alignment, thereby improving efficiency, reducing loss, and ensuring stable assembly quality.

[0133] Reference Figure 6 and Figure 7 In some embodiments of the present application, the side surface of the guide section 1151 is an outwardly convex arc surface structure.

[0134] The side surface of the guide section 1151 is outwardly convex arc surface. By setting the side surface of the guide section 1151 as arc surface, the outward expansion degree of the guide section 1151 can be increased, so as to obtain a larger opening at the edge of the side plate 114, thereby further reducing the difficulty of assembling the fitting protrusion 1321. Moreover, compared with the scheme of selecting plane as the side surface of the guide section 1151, the width of the guide section 1151 is inwardly contracted at a larger degree, so as to shorten the introduction stroke of the guide section 1151 on the basis of meeting the introduction requirement of the fitting protrusion 1321, thereby reducing the length of the guide section 1151 occupied on the side plate 114. Further, the technical effects of reducing the assembly difficulty of the fitting protrusion 1321 and improving the utilization rate of the groove 115 in the first direction X are realized.

[0135] Reference Figure 9 and Figure 10 , Figure 9 a structural schematic diagram of a battery device 100 provided by an embodiment of the present application; Figure 10 a structural schematic diagram of a battery device 100 provided by an embodiment of the present application. In some embodiments of the present application, the cross section of the groove 115 is rectangular, and the cross section of the fitting protrusion 1321 is rectangular or circular which is adapted to the groove 115.

[0136] The groove 115 includes two side surfaces and a bottom surface, and the two side surfaces and the bottom surface are sequentially connected. The side surfaces and the bottom surface are all planes, and the side surfaces are perpendicular to the bottom surface. Correspondingly, by taking the side plate 114 in a plane perpendicular to the first direction X, the groove 115 in the cross section is rectangular.

[0137] On this basis, by taking the fitting protrusion 1321 in a plane perpendicular to the width direction of the battery device 100, the cross section of the fitting protrusion 1321 can be obtained. The cross section of the fitting protrusion 1321 is rectangular or the cross section of the fitting protrusion 1321 is circular.

[0138] In the case that the cross section of the fitting protrusion 1321 is rectangular, the outer surface of the fitting protrusion 1321 inserted into the groove 115 can be closely fitted with the two side surfaces and the bottom surface of the groove 115, thereby improving the positioning accuracy of the groove 115 to the fitting protrusion 1321, correspondingly improving the positioning accuracy of the partition piece 130, reducing the possibility of mispositioning of the partition piece 130, and reducing the possibility of loosening and producing abnormal sound of the partition piece 130.

[0139] In the case that the cross section of the matching protrusion 1321 is circular, the peripheral side surface of the matching protrusion 1321 is a circular arc surface, which can adapt to the arc surface of the guide segment 1151 on the one hand, can further reduce the difficulty of the matching protrusion 1321 into the sliding segment 1152, and on the other hand, the contact area of the circular arc surface with the side wall of the groove 115 is small, which can reduce the sliding resistance of the matching protrusion 1321 in the groove 115, so that the separator 130 can smoothly slide in the first direction X, thereby reducing the disassembly difficulty of the separator 130 and improving the error compensation accuracy of the separator 130 in the first direction X.

[0140] Reference Figure 6 , Figure 7 and Figure 8 In some embodiments of the present application, the two side plates 114 are each provided with a groove 115, the support portion 132 is at least two and is respectively located on both sides of the frame portion 131, and the at least two support portions 132 are respectively matched with the grooves 115 of the two side plates 114.

[0141] The inner side of the two side plates 114 is provided with a groove 115, and the two sides of the frame portion 131 are correspondingly provided with a support portion 132, and specifically at least one support portion 132 is provided on each side. Wherein, each support portion 132 is matched with one groove 115 on the corresponding side, that is, the plurality of support portions 132 and the plurality of grooves 115 are one-to-one corresponding.

[0142] By providing the grooves 115 on the two side plates 114 and the support portions 132 on both sides of the frame portion 131, the double-side support of the frame portion 131 can be realized, thereby improving the positioning reliability of the frame portion 131, reducing the probability of mispositioning of the frame portion 131, enabling the frame portion 131 to be centered relative to the battery monomer 120, and further enabling the separator 130 to be kept in the effective separation position for a long time, thereby achieving the technical effect of meeting the separation arrangement requirement of the battery monomer 120.

[0143] In addition, by providing the grooves 115 on the two side plates 114 and the support portions 132 on both sides of the frame portion 131, the sliding stability of the separator 130 can be improved, and the probability of jamming of the separator 130 can be reduced, thereby achieving the technical effect of improving the error compensation accuracy of the separator 130 in the first direction X.

[0144] Reference Figure 11 , Figure 11 The second structure schematic diagram of the separator 130 of the battery device 100 provided by the embodiments of the present application, in an alternative embodiment, the separator 130 includes two support portions 132, and the two support portions 132 are respectively arranged on both sides of the frame portion 131. Correspondingly, each side plate 114 is provided with a groove 115, and the left and right two support portions 132 are respectively inserted into the two grooves 115 to complete the assembly.

[0145] In this structure, the number of support portions 132 is small, and the structural complexity of the partition 130 can be reduced on the basis of meeting the needs of bilateral support and bilateral sliding, thereby achieving the technical effects of reducing the cost of the partition 130 and providing convenient conditions for lightweight design of the partition 130.

[0146] Reference Figure 12 , Figure 12 FIG. 3 is a structural schematic diagram of a partition 130 of a battery device 100 provided by an embodiment of the present application. In an embodiment, the partition 130 includes three support portions 132, two of which are arranged on a first side of the frame portion 131, and the remaining one is arranged on a second side of the frame portion 131. Correspondingly, one of the side plates 114 is provided with two grooves 115, and the other side plate 114 is provided with one groove 115. The three support portions 132 are inserted into the three grooves 115, respectively, to complete the assembly.

[0147] In this structure, one side of the frame portion 131 is provided with two support portions 132, which can prevent the partition 130 from overturning by being inserted into two grooves 115, respectively, thereby improving the sliding stability of the partition 130 and avoiding the influence of the overturned partition 130 on the disassembly of the battery monomer 120, thereby achieving the technical effect of reducing the difficulty of disassembling the partition 130 and the battery monomer 120.

[0148] On this basis, by retaining a single support portion 132 on the other side of the frame portion 131, the technical effects of reducing the cost of the partition 130 and providing convenient conditions for lightweight design of the partition 130 can also be achieved.

[0149] Reference Figure 7 , Figure 8 and Figure 13 , Figure 13 FIG. 4 is a structural schematic diagram of a partition 130 of a battery device 100 provided by an embodiment of the present application. In some embodiments of the present application, along the height direction Y of each side plate 114, the grooves 115 on each side plate 114 are at least two, and the number and position of the support portions 132 correspond to the grooves 115.

[0150] For the two sides of the frame portion 131 facing the side plates 114, each side is provided with a plurality of support portions 132, and correspondingly, the side plate 114 on this side is provided with a plurality of grooves 115 with the same number. The plurality of grooves 115 and the plurality of support portions 132 correspond to each other, and the plurality of grooves 115 are arranged at intervals in the height direction Y of the battery device 100, corresponding to the arrangement of the plurality of support portions 132 in the height direction Y of the battery device 100.

[0151] For example, Figure 8In some embodiments, the partition 130 includes four support portions 132, two support portions 132 are arranged on each side of the frame portion 131, and correspondingly Figure 7 In some embodiments, two grooves 115 are arranged on each side plate 114, and the two grooves 115 correspond to the two support portions 132 respectively.

[0152] Alternatively, Figure 13 In some embodiments, the partition 130 includes six support portions 132, three support portions 132 are arranged on each side of the frame portion 131, and correspondingly three grooves 115 are arranged on each side plate 114, and the three grooves 115 correspond to the three support portions 132 respectively.

[0153] By arranging multiple support portions 132 on each side of the support portion 132 and arranging multiple grooves 115 on the corresponding side plate 114, the side plate 114 can provide accurate positioning for the partition 130, avoiding the partition 130 from turning over, on the one hand, improving the partitioning reliability of the partition 130 to the battery monomer 120, on the other hand, reducing the probability of the partition 130 being stuck in the first direction X, and improving the thickness error compensation accuracy of the partition 130 to the battery monomer 120. And arranging multiple support portions 132 on each side of the frame portion 131 can distribute the weight of the partition 130 to multiple grooves 115, thereby reducing the wear of a single groove 115 and prolonging the service life of the battery device 100.

[0154] Reference Figure 3 , Figure 4 and Figure 5 In some embodiments of the present application, a row of battery monomers 120 are arranged in the frame 113 along the first direction X, and the frame portion 131 is a square structure, and the projection of the frame portion 131 falls into the side wall of the battery monomer 120 along the first direction X.

[0155] The frame 113 includes at least one row of battery monomers 120 arranged along the first direction X, and the partition 130 is arranged between two adjacent battery monomers 120 along the first direction X.

[0156] In some embodiments, the frame portion 131 is a square structure, and the projection of the frame portion 131 along the first direction X on the side wall of the battery monomer 120 facing the partition 130 falls into the side wall, that is, the edge of the projection of the frame portion 131 is spaced apart from the edge of the side wall.

[0157] By setting the frame portion 131 as a square structure, the coverage range of the edge of the frame portion 131 on the side wall can be expanded, thereby improving the partitioning effect of the frame portion 131 on the two adjacent battery monomers 120, avoiding the battery monomers 120 from being skewed and contacting, and thereby achieving the technical effects of improving the partitioning reliability of the partition 130 to the battery monomer 120 and reducing the failure rate of the battery device 100.

[0158] On this basis, by limiting the projection of the frame portion 131 to fall within the side wall, the frame portion 131 can be arranged centrally relative to the battery monomer 120, thereby improving the support reliability of the frame portion 131 on the battery monomer 120 in the first direction X, reducing the probability of the battery monomer 120 being skewed and contacting, and also achieving the technical effects of improving the separation reliability of the separator 130 on the battery monomer 120 and reducing the failure rate of the battery device 100.

[0159] In an alternative embodiment, the separator 130 comprises: two cross beams arranged side by side; at least two longitudinal beams arranged at intervals between the two cross beams; wherein a part of the cross beam forms the frame portion 131 with the longitudinal beam, and another part of the cross beam protrudes relative to the frame to form the support portion 132, and the cross beam and the two adjacent longitudinal beams enclose a square structure.

[0160] The separator 130 under this structure has flexibility and simplicity, and the operation convenience is particularly outstanding: the structure is simple and intuitive, and no complex process is required during assembly. Only the support portion 132 needs to be aligned with the opening of the groove 115 of the side plate 114, and then it can be easily installed by sliding in, and the whole process is smooth and efficient.

[0161] Figure 7 And Figure 8 The H-shaped separator 130 and the groove 115 are slidably connected, which can always maintain a stable connection state during long-term cyclic use. Even if it is repeatedly assembled or subjected to stress changes, it is not easy to loosen or deform, and the structural reliability is strong.

[0162] Reference Figure 14 , Figure 15 , Figure 14 is a structural schematic diagram of the battery device 100 provided by the embodiments of the present application; Figure 15 is a structural schematic diagram of the separator 130 of the battery device 100 provided by the embodiments of the present application. In some embodiments of the present application, the battery monomers 120 arranged along the first direction X in the frame 113 form a battery monomer row 122, and the frame 113 is provided with at least two battery monomer rows 122 along the second direction Z. The frame portion 131 comprises at least two square units 1311 connected along the second direction Z, and the square units 1311 are arranged one by one corresponding to the battery monomer rows 122.

[0163] A plurality of battery monomers 120 arranged along the first direction X form a battery monomer row 122. Among them, a plurality of battery monomer rows 122 are arranged in the frame 113, and the plurality of battery monomer rows 122 are distributed in the second direction Z, which corresponds to the width direction of the aforementioned battery device 100.

[0164] For example, Figure 14In the specific embodiment shown in FIG. 16, two battery cell rows 122 are arranged in the frame 113. In the specific embodiment shown in FIG. 16, the frame portion 131 includes two side-by-side square units 1311.

[0165] By arranging multiple battery cell rows 122, the space in the frame 113 can be fully utilized, thereby increasing the number of battery cells 120 arranged inside the frame 113 without changing the size of the frame 113, and further achieving the technical effect of improving the energy density of the battery device 100.

[0166] On this basis, the frame portion 131 of each partition 130 includes at least two square units 1311 distributed along the second direction Z, and the at least two square units 1311 are connected end to end. Among them, the number of square units 1311 is the same as the number of battery cell rows 122, and the square units 1311 and the battery cell rows 122 correspond one-to-one, and the projection of each square unit along the first direction X falls on one of the battery cells 120 in the corresponding battery cell row 122.

[0167] By arranging square units 1311 on the partition 130, the number of which corresponds to the number of battery cell rows 122, the single partition 130 can simultaneously separate adjacent battery cells 120 in multiple battery cell rows 122, thereby supporting multiple square units 1311 in the second direction Z by means of the two side plates 114 and the support portion 132, and ensuring that the frame portion 131 can be centrally arranged with respect to the battery cells 120 in the scenario of multiple battery cell rows 122, thereby achieving the technical effect of enabling the partition 130 to be stably arranged in the effective separation position and meeting the spacing arrangement requirements of the battery cells 120.

[0168] Reference Figure 4 In some embodiments of the present application, the frame 113 includes at least two opposite end plates 116, and the two side plates 114 and the two end plates 116 are sequentially connected. The inner wall of at least one end plate 116 is provided with a profiled recess 1161 corresponding to the battery cell 120 and adapted to the expanded form of the battery cell 120 along the first direction X.

[0169] The end plate 116 is part of the frame 113, and the number of end plates 116 is two. The two end plates 116 and the two side plates 114 are sequentially connected to form a shielding structure surrounding the battery cell 120. Specifically, in the first direction X, the battery cell 120 is located between the two end plates 116.

[0170] By arranging two end plates 116 in cooperation with the side plates 114, the battery cell 120 can be protected in all directions in the circumferential direction of the battery cell 120, thereby reducing the probability of damage to the battery cell 120 by external impact, and further achieving the technical effect of improving the safety and reliability of the battery device 100.

[0171] On this basis, the battery monomer 120 will produce expansion in the working process, and the expanded battery monomer 120 will extrude the end plate 116 contacted by it. Among them, the side of the end plate 116 facing the battery monomer 120 is provided with a profiled recess, and the inner recess shape of the profiled recess is the same as or similar to the outer convex shape of the battery monomer 120. In the case of similarity, the inner recess size of the square recess should be greater than or equal to the outer convex size of the battery monomer 120.

[0172] By setting the profiled recess on the end plate 116, additional expansion space can be provided for the battery monomer 120 in the first direction X, thereby reducing the overall expansion force in the first direction X, reducing the possibility of the end plate 116 weld cracking under the expansion force, and thereby achieving the technical effects of improving the structural stability of the battery device 100 and reducing the failure rate of the battery device 100.

[0173] In addition, during the expansion of the battery monomer 120, the battery monomers 120 will extrude each other. In this case, the separator 130 which can slide along the groove 115 can adjust the position of the battery monomer 120 by sliding, thereby unloading part of the load generated by the expansion, so that the position distribution of the separator 130 and the battery monomer 120 can be adjusted in view of the expansion, thereby achieving the technical effects of reducing the damage of the battery monomer 120 and the separator 130 caused by the collision, reducing the failure rate of the battery device 100, and prolonging the service life of the battery device 100.

[0174] Reference Figure 16 , Figure 16 The structure schematic diagram of the end plate 116 of the battery device 100 provided by the embodiments of the present application is provided. In some embodiments of the present application, the bottom surface of the profiled recess 1161 is a stepped surface 1162, and the height of the stepped surface 1162 decreases step by step in the direction from the edge of the bottom surface to the middle of the bottom surface.

[0175] The bottom surface of the profiled recess 1161 is a stepped surface 1162, and the profiled recess 1161 realizes the inner recess through the stepped surface 1162 with the height decreasing step by step. The stepped surface 1162 is annular, and the multiple stepped surfaces 1162 are combined into a terrace-shaped groove 115.

[0176] Among them, when the battery monomer 120 produces expansion, the outer convex amplitude of the central region is larger on the side wall of the battery monomer 120 facing the end plate 116, and the outer convex amplitude of the peripheral region is smaller. By setting the stepped surface 1162, the recessed shape of the profiled recess can be adapted to the outer convex shape of the battery monomer 120, thereby providing sufficient expansion space for the battery monomer 120, reducing the expansion force of the battery monomer 120 on the end plate 116, and reducing the possibility of the end plate 116 weld cracking, thereby achieving the technical effects of improving the structural stability of the battery device 100 and reducing the failure rate of the battery device 100.

[0177] In addition, the specially designed terrace type groove 115 structure disperses the axial expansion force layer by layer through the stepped buffer path, which can significantly weaken the impact of stress on the weld, effectively delay the fatigue loss of the weld, greatly improve the service life, and further ensure the durability of the overall structure.

[0178] Reference Figure 17 , Figure 17 The second structure schematic diagram of the end plate 116 of the battery device 100 provided by the embodiment of the application, in some embodiments of the application, the bottom surface of the profiled recess 1161 is a curved surface 1163.

[0179] The bottom surface of the profiled recess 1161 is a curved surface 1163, and the profiled recess 1161 realizes the concave through the curved surface 1163 with low middle and high edges, for example Figure 17 The curved surface 1163 in the above is an arc surface, and the arc surface forms a U-shaped groove.

[0180] Wherein, when the battery monomer 120 expands, the outer convex amplitude of the central region is larger on the side wall of the battery monomer 120 towards the end plate 116, and the outer convex amplitude of the peripheral region is smaller, and by setting the curved surface 1163, the concave shape of the profiled recess can be adapted to the outer convex shape of the battery monomer 120, thereby providing sufficient expansion space for the battery monomer 120, reducing the expansion force of the battery monomer 120 on the end plate 116, reducing the possibility of cracking of the weld of the end plate 116, and further realizing the technical effects of improving the structural stability of the battery device 100 and reducing the failure rate of the battery device 100.

[0181] In some embodiments of the application, the materials of the frame part 131 and the support part 132 are different, and the rigidity of the support part 132 is greater than that of the frame part 131.

[0182] On the partition 130, the frame part 131 and the support part 132 are respectively formed by different materials, and can be integrally formed by a split injection molding method.

[0183] Wherein, the elasticity of the frame part 131 is greater than that of the support part 132, and materials such as rubber, polyurethane, and memory alloy can be selected. By setting the frame part 131 with strong elasticity, the frame part 131 can be unloaded by deformation when being pressed by the adjacent two battery monomers 120, thereby reducing the probability of damage of the frame part 131 on one hand, and reducing the damage of the frame part 131 to the battery monomer 120 on the other hand, and further realizing the technical effect of improving the structural stability of the battery device 100.

[0184] On this basis, the rigidity of the support portion 132 is greater than the rigidity of the frame portion 131, and materials such as aluminum alloy, polycarbonate, nylon, etc. can be selected. By arranging the support portion 132 with strong rigidity, the support effect of the support portion 132 on the frame portion 131 can be improved by reducing the deformation amplitude of the support portion 132, thereby improving the positioning accuracy of the frame portion 131, enabling the frame portion 131 to be arranged centrally with respect to the battery monomer 120, and thereby enabling the partition 130 to be stably arranged at the effective partition position for a long time, thereby achieving the technical effect of meeting the spacing arrangement requirement of the battery monomers 120.

[0185] The application also provides a power utilization device comprising the battery device 100 for providing electric energy according to any one of the above embodiments.

[0186] Since the power utilization device comprises the battery device 100 in any one of the above embodiments, the space utilization rate can also be improved, and the energy density can be increased.

[0187] The above is only a preferred embodiment of the application, and does not limit the patent scope of the application. Any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection scope of the application.

Claims

1. A battery device, characterized by, The battery device comprises: a frame body comprising at least two opposite side plates; at least two battery cells arranged in the frame body along a first direction; a partition arranged between two adjacent battery cells along the first direction, the partition comprising a frame portion and a support portion, the frame portion corresponding to the battery cells, and the support portion being connected to the frame portion and to at least one of the side plates; a groove is arranged on one of the side plates and the support portion, and a matching protrusion is arranged on the other one of the side plates and the support portion; both of the side plates are provided with the groove, and the support portion is provided with at least two support portions arranged on both sides of the frame portion, and the at least two support portions are matched with the grooves of the two side plates respectively.

2. The battery device of claim 1, wherein The support portion and the corresponding side plate are detachably connected.

3. The battery device of claim 2, wherein At least one of the side plates is provided with the groove, and the groove penetrates the side plate along the first direction, and the end of the support portion forms the matching protrusion, and the matching protrusion is slidably connected to the groove.

4. The battery device of claim 3, wherein In the first direction, the groove comprises a guide segment and a sliding segment which are connected to each other, the guide segment is arranged at at least one outer edge of the side plate, the width of the sliding segment is matched with the width of the matching protrusion, and the width of the guide segment is larger at the outer edge of the side plate.

5. The battery device of claim 4, wherein The side surface of the guide segment is an outward convex arc surface structure.

6. The battery device of claim 3, wherein The cross section of the groove is a rectangle, and the cross section of the matching protrusion is a rectangle or a circle matched with the groove.

7. The battery device of claim 1, wherein Along the height direction of each side plate, the groove on each side plate is at least two, and the number and position of the support portion are matched with the groove one by one.

8. The battery device of claim 1, wherein, The frame body is provided with a row of battery cells arranged along the first direction, and the frame portion is a square structure, and the projection of the frame portion falls on the side wall of the battery cell along the first direction.

9. The battery device of claim 1, wherein The frame body is provided with at least two rows of battery cells arranged along the second direction, and the frame portion comprises at least two square units connected along the second direction, and the square units are arranged one by one corresponding to the row of battery cells.

10. The battery device according to any one of claims 1 to 9, wherein The frame body comprises at least two opposite end plates, and the two side plates and the two end plates are connected in sequence, and at least one of the inner walls of the end plates is provided with a profiled recess corresponding to the battery cell and matched with the expansion mode of the battery cell along the first direction.

11. The battery device of claim 10, wherein, The bottom surface of the profiled recess is a stepped surface, and the height of the stepped surface decreases step by step from the edge of the bottom surface to the middle part of the bottom surface.

12. The battery device of claim 10, wherein, The bottom surface of the profiled recess is a curved surface.

13. The battery device according to any one of claims 1 to 7, wherein the materials of the frame portion and the support portion are different, and the rigidity of the support portion is greater than that of the frame portion.

14. An electrical device, characterized by The battery device comprises: The battery device according to any one of claims 1 to 13.

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