Battery device and electric device

Abstract

The application belongs to the technical field of batteries, and provides a battery device and a power utilization device. The battery device comprises a box body, a battery monomer, a pressing strip assembly and a locking component. The box body comprises two structural beams, and a spacing space is formed between the two structural beams. The battery monomer is located in the spacing space. The pressing strip assembly comprises a first pressing strip and a second pressing strip extending along a first direction. In a second direction, the first pressing strip is stacked on a side of the second pressing strip opposite to the battery monomer. The first pressing strip protrudes from the second pressing strip at two extension ends along the first direction and forms a connecting part. In a third direction, a part of the second pressing strip forms a blocking part on at least one side of the connecting part. The blocking part protrudes from the connecting part along the first direction and the second direction. The first direction, the second direction and the third direction are perpendicular to each other in pairs. The blocking part is made of an insulating material. The locking component connects the structural beam and the connecting part. The blocking part is arranged on the side of the locking component. The application aims to improve the insulation reliability of the connection between the pressing strip and the box body.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery device and an electrical device. Background Technology

[0002] With the rapid development of new energy technologies, battery devices are widely used in various electric equipment. Battery devices typically include pressure bars to fix and limit individual battery cells or modules, ensuring the structural stability of the battery device under conditions such as expansion forces, vibration, and impact.

[0003] In related technologies, the connection between the pressure strip and the housing has insufficient insulation and protection reliability, which in turn affects the overall reliability and service life of the battery device. Utility Model Content

[0004] The purpose of this application is to provide a battery device and an electrical device, which aims to solve the technical problem of poor insulation reliability at the connection position between the pressure strip and the housing.

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

[0006] The box-shaped structure includes two spaced and oppositely arranged structural beams, with a spaced interval between the two structural beams.

[0007] The battery cells are housed within the space between them;

[0008] The pressure strip assembly includes a first pressure strip and a second pressure strip, both extending along a first direction. In a second direction, the first pressure strip is stacked on the side of the second pressure strip opposite to the battery cell. Both ends of the first pressure strip protrude from the second pressure strip along the first direction to form a connecting portion, which is disposed opposite to a structural beam. Along a third direction, a portion of the second pressure strip forms a retaining portion on at least one side of the connecting portion. The retaining portion protrudes from the connecting portion along both the first and second directions, and the first, second, and third directions are mutually perpendicular. The connecting portion is made of metal, and the retaining portion is made of insulating material.

[0009] The locking component connects the connecting part and the structural beam, and the retaining part surrounds the locking component.

[0010] In this embodiment, the combined design of the first and second pressure strips increases the rigidity and strength of the pressure strip assembly, improves the overall deformation resistance of the pressure strip assembly, and the connection part is made of metal and is connected to the structural beam through a locking component, which can improve the reliability of the connection. By setting a stop part on the second pressure strip, it can play a blocking role on the side of the connection part and the locking component, thereby increasing the electrical clearance and creepage distance between the connection part and the electrical components, as well as between the locking component and the electrical components, thereby improving the insulation protection effect and improving the overall reliability and service life of the battery device.

[0011] In one embodiment, the second pressure strip has a receiving groove, at least a portion of the first pressure strip is received in the receiving groove, and the connecting portion protrudes from the bottom surface of the receiving groove along a first direction.

[0012] In this embodiment, the receiving groove on the second pressure strip plays a role in accurately positioning and wrapping the first pressure strip, effectively limiting the relative displacement between the first and second pressure strips along the third direction, reducing the loosening or misalignment of the two when subjected to force, thereby improving the overall structural rigidity and stability of the pressure strip assembly, and ensuring that the pressure strip assembly can continuously and reliably press and limit the battery cells.

[0013] In one embodiment, the second pressure strip includes a bottom wall body and two side walls extending along a first direction. In a third direction, the two side walls are arranged opposite to each other and are connected to both sides of the bottom wall body to form a receiving groove together with the bottom wall body. At least a portion of the first pressure strip is received in the receiving groove to be stacked and connected to the bottom wall body. The blocking portion is connected to the extension end of the side wall body. Along the first direction, the connecting portion protrudes from the bottom wall body.

[0014] In this embodiment, the structure in which the bottom wall and the two side walls are connected can improve the structural rigidity and stability of the pressure strip assembly, enhance the positioning effect of the receiving groove on the first pressure strip, and improve the structural reliability and insulation effect of the blocking joint.

[0015] In one embodiment, the stop portion is integrally formed on the side wall.

[0016] In this embodiment, the sidewall and the retaining part are integrally formed, which can reduce splicing gaps and weak connection points, improve structural stability, and further improve insulation reliability.

[0017] In one embodiment, two blocking portions are provided, and along a third direction, the two blocking portions are disposed opposite to each other on both sides of the connecting portion.

[0018] In this embodiment, two blocking portions are arranged opposite each other on both sides of the connecting portion along the third direction, which can form a double-sided blocking structure on both sides of the connecting portion and the locking component in the third direction, so as to fully cover the side of the locking component, block the contact path between the locking component and the surrounding high-voltage electrical components, and improve the comprehensiveness of insulation protection.

[0019] In one embodiment, the pressure strip assembly further includes an insulating film that adheres to a side of the first pressure strip away from the second pressure strip and extends to the side of the two sidewalls facing the receiving groove, and to the surface of the two sidewalls away from the bottom wall; the insulating film avoids the connection portion.

[0020] In this embodiment, the insulating film is attached to the side of the first pressure strip away from the second pressure strip, which can form a complete insulating cover on this side of the first pressure strip, reducing its contact with other electrical components inside the battery device; at the same time, the insulating film extends from the side of the two side walls toward the receiving groove to the surface of the two side walls away from the bottom wall, so as to cover the top surface of the side walls, further expanding the insulation protection range, reducing the risk of direct contact between the top of the side walls and surrounding electrical components, thereby reducing the risk of short circuit, reducing insulation blind spots, and significantly improving the insulation reliability of the pressure strip assembly.

[0021] In one embodiment, the pressure strip assembly further includes a cushioning pad, which is attached to the side of the first pressure strip away from the bottom surface of the receiving groove and protrudes from the opening of the receiving groove.

[0022] In this embodiment, the buffer pad is made of elastic insulating material and is attached to the side of the first pressure strip away from the bottom of the receiving groove and protrudes from the groove opening. When the battery device is subjected to vibration and impact, or when the battery cell expands and deforms during charging and discharging, the buffer pad can absorb the impact force through its own elastic deformation, reducing the risk of hard collision between the first pressure strip and other components inside the battery device, effectively reducing abnormal noise caused by collision, and improving the reliability of the battery device.

[0023] In one embodiment, the pressure strip assembly further includes a pad connected to the side of the connector facing the structural beam, the pad abutting against the structural beam, and a locking member configured to connect the connector, the pad, and the structural beam.

[0024] In this embodiment, the pad abuts against the connecting part and the structural beam, playing a supporting role to improve connection stability. In addition, the pad also increases the contact friction between the connecting part and the structural beam. Combined with the locking force of the locking component, it can effectively reduce the risk of relative slippage between the connecting part and the structural beam, reduce the probability of the locking component loosening due to slippage, ensure the connection stability between the pressure strip assembly and the housing, and thus ensure the pressure strip assembly's pressing and limiting effect on the battery cells.

[0025] In one embodiment, the pad is made of a metallic material.

[0026] In this embodiment, the metal pad has greater rigidity and strength, which can enhance the support effect and improve the reliability of the connection between the connecting part, the pad and the structural beam.

[0027] In one embodiment, the battery device further includes a busbar component electrically connected to the battery cell; the side of the second pressure bar facing the battery cell has a relief groove, the relief groove being recessed inward along a second direction toward the direction away from the battery cell, the relief groove being at least used to avoid the busbar component.

[0028] In this embodiment, by opening a clearance groove, the clearance groove can accommodate the top structure of the battery cell and avoid the busbar components used for electrically connecting the battery cell, thereby enabling the second pressure bar to be closer to the battery cell in the second direction, which helps to save space in the battery device in the second direction and improve the space utilization of the battery device.

[0029] In one embodiment, the first pressure strip and the second pressure strip are bonded and fixed together.

[0030] In this embodiment, bonding and fixing facilitate the formation of a seamless integrated structure between the first and second pressure strips. After the adhesive on the bonding surface is cured, it has strong bonding force, which can effectively limit the relative slippage between the two in the first and third directions, as well as the separation tendency in the second direction. It can effectively resist the force brought by the vibration and impact of the battery device and the expansion force of the battery cell, ensuring the overall structural integrity of the pressure strip assembly and ensuring the pressing and limiting effect on the battery cell.

[0031] In one embodiment, the surface of the first pressure strip is disposed opposite to the bottom surface of the receiving groove, and a connecting groove is provided on the bottom surface of the groove; the pressure strip assembly also includes an adhesive, which is contained in the connecting groove and is connected to the first pressure strip and the second pressure strip.

[0032] In this embodiment, the connecting groove provides space for the adhesive. The "interlocking" bonding structure formed after the adhesive cures can more effectively resist vibration and impact, shear force and separation force caused by battery expansion force, further strengthen the bonding and fixing strength between the first pressure strip and the second pressure strip, and improve the overall structural stability of the pressure strip assembly.

[0033] In one embodiment, the second pressure strip includes a bottom wall extending along a first direction, the bottom wall having an insertion groove along the first direction, the first pressure strip being inserted into the insertion groove and protruding at both ends from the insertion groove to form a connecting portion; the blocking portion is connected to the bottom wall.

[0034] In this embodiment, the insertion groove in the bottom wall body can realize the quick insertion and positioning of the first pressure strip without complicated alignment adjustment, which greatly improves the assembly efficiency of the pressure strip assembly, and the insertion fit is precise, ensuring the relative position accuracy of the first pressure strip and the second pressure strip.

[0035] Secondly, this application provides an electrical device, which includes a battery device as described in any of the above claims, the battery device being used to store or provide electrical energy.

[0036] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0037] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This application provides structural schematic diagrams of vehicles for some embodiments;

[0039] Figure 2 This is an exploded view of the battery device provided in some embodiments of this application;

[0040] Figure 3 Schematic diagram of the internal structure of the battery device provided in some embodiments of this application Figure 1 ;

[0041] Figure 4 This is a schematic diagram of the structure of a battery device provided in some embodiments of this application;

[0042] Figure 5 This is a three-dimensional structural schematic diagram of a battery device provided in some embodiments of this application;

[0043] Figure 6 This is a schematic diagram of the structure of the pressure bar assembly in the battery device provided in some embodiments of this application;

[0044] Figure 7 for Figure 6 AA section view;

[0045] Figure 8 for Figure 6 BB sectional view Figure 1 ;

[0046] Figure 9 for Figure 6 BB sectional view Figure 2 ;

[0047] Figure 10 for Figure 6 BB sectional view Figure 3 ;

[0048] Figure 11 Schematic diagram of the three-dimensional structure of the pressure strip assembly in the battery device provided in some embodiments of this application Figure 1 ;

[0049] Figure 12 for Figure 11 A magnified view of a portion of position E in the middle;

[0050] Figure 13 for Figure 11 A schematic diagram of the decomposed structure;

[0051] Figure 14 for Figure 13 A magnified view of the area at position C in the middle;

[0052] Figure 15 Schematic diagram of the three-dimensional structure of the pressure strip assembly in the battery device provided in some embodiments of this application Figure 2 ;

[0053] Figure 16 for Figure 15 A schematic diagram of a local configuration at position D;

[0054] Figure 17 This is a schematic diagram showing the connection between the structural beams, pressure strip assemblies, and locking components in a battery device provided in some embodiments of this application.

[0055] Explanation of reference numerals in the attached figures:

[0056] 1000, Vehicle; 1100, Battery assembly; 1110, Housing; 1111, First part; 1112, Second part; 1113, Spacer; 1114, Structural beam; 1120, Battery cell; 1130, Pressure strip assembly; 1131, First pressure strip; 1132, Second pressure strip; 11321, Bottom wall; 11322, Side wall; 11323, Top surface; 1133, Connecting part; 1134, Stopping part; 1135, Insulating film; 1136, Buffer pad; 1137, Pad; 1138, Clearance groove; 1139, Adhesive; 11391, Connecting groove; 11392, Insertion groove; 11393, Receiving groove; 1140, Locking component; 1200, Controller; 1300, Motor; X, First direction; Y, Third direction; Z, Second direction. Detailed Implementation

[0057] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application, and are therefore merely examples and should not be used to limit the scope of protection of this application.

[0058] 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 pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0059] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0060] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0061] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0062] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0063] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0064] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0065] With the rapid development of new energy technologies, battery devices are widely used in various electric equipment. Battery devices typically include pressure bars to fix and limit individual battery cells or modules, ensuring structural stability under conditions such as expansion forces, vibration, and impact. These pressure bars are usually connected to the housing, and to enhance connection strength, the connection point is typically made of metal. However, electrical components are usually located near the connection between the pressure bars and the housing, making the connection point of the pressure bars highly susceptible to arcing and short circuits.

[0066] In related technologies, the connection position between the pressure strip and the housing does not fully consider insulation requirements, making it difficult to ensure the electrical clearance and creepage distance between the pressure strip and surrounding electrical components. This results in insufficient reliability of insulation protection, which in turn affects the overall reliability and service life of the battery device.

[0067] Therefore, this application provides a battery device that forms a pressure strip assembly by setting a first pressure strip and a second pressure strip connected together to enhance the overall strength and rigidity of the pressure strip. Furthermore, by setting an insulating blocking part on the second pressure strip, the connection part of the first pressure strip connected to the housing is blocked, thereby isolating the connection part from the adjacent electrical components. This increases the electrical clearance and creepage distance between the connection part and the electrical components, thereby improving the insulation protection effect and enhancing the overall reliability and service life of the battery device.

[0068] To better understand the positional relationships between the components, the first direction and the third direction in the following example can be understood as two mutually perpendicular directions in the horizontal plane, and the second direction can be understood as a direction in the vertical plane that is perpendicular to the first direction and the third direction.

[0069] Specifically, refer to Figures 2-7As shown, this application provides a battery device 1100, which includes a housing 1110, a battery cell 1120, a pressure strip assembly 1130, and a locking component 1140. The housing 1110 includes two spaced and oppositely arranged structural beams 1114, forming a space 1113 between the two beams. The battery cell 1120 is disposed within the space 1113. The pressure strip assembly 1130 includes a first pressure strip 1131 and a second pressure strip 1132 extending along a first direction X. The second pressure strip 1132 is opposite to or abuts against the battery cell 1120. In the second direction Z, the first pressure strip 1131 overlaps the back of the second pressure strip 1132. On one side of the battery cell 1120, the first pressure strip 1131 protrudes from the second pressure strip 1132 at both ends along the first direction X to form a connecting portion 1133, which is disposed opposite to the structural beam 1114; along the third direction Y, a portion of the second pressure strip 1132 forms a retaining portion 1134 on at least one side of the connecting portion 1133, which protrudes from the connecting portion 1133 along both the first direction X and the second direction Z, and the first direction X, the second direction Z and the third direction Y are perpendicular to each other; the connecting portion 1133 is made of metal, and the retaining portion 1134 is made of insulating material; a locking member 1140 is connected between the connecting portion 1133 and the structural beam 1114, and the retaining portion 1134 surrounds the locking member 1140.

[0070] In this embodiment, the battery apparatus 1100 may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include multiple battery cells 1120, which are connected in series, parallel, or mixed connections via a busbar. The battery apparatus 1100 may be a battery pack, which generally includes a housing 1110 and one or more battery cell assemblies. The housing 1110 has spacers 1113 in which the battery cell assemblies are housed.

[0071] The battery cell 1120 can be a secondary battery. A secondary battery is a battery cell 1120 that can be recharged to activate the active materials and continue to be used after it has been discharged.

[0072] The battery cell 1120 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.

[0073] For housing 1110, refer to Figure 3As shown, the housing 1110 serves as the supporting foundation for the battery device 1100, accommodating and protecting internal components such as the battery cells 1120 and the pressure strip assembly 1130. The housing 1110 can be made of high-strength metal materials (such as steel or aluminum alloy), possessing sufficient structural strength and impact resistance to effectively resist the effects of external vibrations and impacts on the internal components. The housing 1110 includes two spaced and oppositely arranged structural beams 1114, which extend in a direction perpendicular to the first direction X (i.e., the third direction Y), forming a space 1113 between them. The size of this space 1113 is adapted to the overall size of the battery cell 1120 assembly (including a module of multiple battery cells 1120), accommodating the battery cells 1120.

[0074] The two structural beams 1114 can also be considered as part of the housing 1110. For example, the housing 1110 may also include a bottom plate connected between the two structural beams 1114. The bottom plate may be located at the bottom to support the battery cells 1120 (or be positioned opposite to the battery cells 1120). The structural beams 1114 are located at both ends of the battery cell 1120 assembly to limit the position of the battery cells 1120 assembly. The arrangement of the structural beams 1114 can further improve the structural rigidity of the housing 1110, reduce the deformation of the housing 1110 under stress, and ensure the overall structural stability of the battery device 1100.

[0075] Of course, combined Figure 4 and Figure 5 The structural beam 1114 can also be considered as an expansion beam set inside the housing 1110. For example, the housing 1110 includes a bottom plate and an annular frame. The frame and the bottom plate are connected and together form a receiving cavity. Two structural beams 1114 are respectively set in the receiving cavity and separate the receiving cavity, thereby dividing the receiving cavity into an interval space 1113. The battery cell 1120 is housed in the interval space 1113.

[0076] For the pressure strip assembly 1130, refer to Figures 5-7 As shown, the pressure strip assembly 1130 is disposed above the battery cell 1120 to press and limit the battery cell 1120, reduce the displacement of the battery cell 1120 along the second direction Z caused by expansion during charging and discharging, and ensure the structural stability of the battery device 1100; in addition, the pressure strip assembly 1130 is connected between the two structural beams 1114, which plays a role in connection and fastening, which helps to improve the rigidity and strength of the housing 1110 and reduce the risk of deformation.

[0077] The pressure strip assembly 1130 includes at least two parts, namely a first pressure strip 1131 and a second pressure strip 1132, both of which extend along the first direction X. It is understood that the first pressure strip 1131 and the second pressure strip 1132 will form extension ends (or extension ends) at both ends of the first direction X, which are the connecting parts 1133 described below. In the second direction Z, the second pressure strip 1132 is disposed opposite to or abuts against the battery cell 1120. The first pressure strip 1131 is stacked on the side of the second pressure strip 1132 facing away from or opposite to the battery cell 1120. This is understood as the first pressure strip 1131 and the second pressure strip 1132 being stacked on each other in the second direction Z and both being disposed opposite to the battery cell 1120. The first pressure strip 1131 is located on the side of the second pressure strip 1132 away from the battery cell 1120. That is, the first pressure strip 1131 and the second pressure strip 1132 are stacked one on top of the other, with the first pressure strip 1131 stacked on top of the second pressure strip 1132.

[0078] In the first pressure strip 1131, at least the connecting part 1133 is made of metal. When the first pressure strip 1131 is an integrally formed structure, the entire first pressure strip 1131 can be a metal pressure strip, in which case the connecting part 1133 is also made of metal. The first pressure strip 1131 can be made of high-strength metal materials (such as steel), possessing excellent structural strength and compressive strength, effectively resisting the expansion force of the battery cell 1120, and reducing the risk of overall deformation of the pressure strip assembly 1130. Alternatively, the connecting part 1133 and the main body of the first pressure strip 1131 are separate structures. The connecting part 1133 can be made of metal, and the main body of the first pressure strip 1131 can be made of metal or non-metal. The connecting part 1133 and the main body of the first pressure strip 1131 can be fixed by welding, bonding, bolting, snap-fitting, or other methods. The length of the first pressure strip 1131 should be greater than the length of the second pressure strip 1132, so that the two extended ends of the first pressure strip 1131 protrude from the second pressure strip 1132 along the first direction X to form a connecting part 1133. In each first pressure strip 1131, there are two connecting parts 1133, which are located at both ends of the first pressure strip 1131 respectively. The two connecting parts 1133 are correspondingly arranged with the two structural beams 1114 of the box body 1110. The connecting part 1133 may be provided with a through hole for cooperating with the locking component 1140 to realize the fixed connection between the pressure strip assembly 1130 and the box body 1110.

[0079] In the second pressure strip 1132, at least the blocking portion 1134 is made of insulating material. When the second pressure strip 1132 is an integrally formed structure, the second pressure strip 1132 as a whole can be a non-metallic pressure strip (i.e., an insulating pressure strip). In this case, the blocking portion 1134 is made of insulating material. The second pressure strip 1132 can be made of insulating material, preferably a high-strength plastic part (such as pultruded fiber reinforced composite material). The second pressure strip 1132 has sufficient structural strength and can assist the first pressure strip 1131 in pressing and limiting the battery cell 1120. It also has excellent insulation performance (when the whole is made of insulating material), and can achieve electrical isolation.

[0080] Combination Figure 13 and Figure 14 As shown, the structure of the second pressure strip 1132 is adapted to the first pressure strip 1131. Along the third direction Y, a blocking part 1134 is formed on at least one side (one side or both sides) of each connecting part 1133. It can be understood that the blocking part 1134 is used to block and lock the connecting parts. The blocking can be understood as blocking one or more sides of the connecting part 1133, or surrounding the circumference of the connecting part 1133, thereby forming a barrier and protection for the connecting part 1133. Understandably, in the first direction X, the extension length of the blocking portion 1134 should be greater than or equal to the extension depth of the connecting portion 1133, so that the blocking portion 1134 protrudes from the connecting portion 1133 in the first direction X, thereby serving to block, increase electrical clearance and creepage distance; in the second direction Z, the height of the blocking portion 1134 is higher than the height of the connecting portion 1133, and both the upper and lower extension end faces of the blocking portion 1134 should protrude from the upper and lower end faces of the connecting portion 1133, so that the blocking portion 1134 can form portions protruding from the upper and lower end faces of the connecting portion 1133 in the second direction Z, thereby serving to block, increase electrical clearance and creepage distance.

[0081] Since the retaining portion 1134 is used to isolate (or separate) the connecting portion 1133 from the electrical components on the side, when an electrical component is provided on one side of the connecting portion 1133, the retaining portion 1134 is provided on that side and positioned between the connecting portion 1133 and the electrical component; when electrical components are provided on both sides of the connecting portion 1133 along the third direction Y, two retaining portions 1134 are provided, with each retaining portion 1134 positioned between the connecting portion 1133 and the electrical component on one side. Therefore, it can be seen that there can be one or two retaining portions 1134, and the retaining portion 1134 can be provided on one or both sides of the connecting portion 1133.

[0082] The connection between the stop part 1134 and the second pressure strip 1132 is as follows: in one case, the stop part 1134 and the second pressure strip 1132 are integrally formed; in another case, the stop part 1134 and the second pressure strip 1132 can be connected by a fixed or detachable method, such as bonding, threaded connection, snap-fit ​​connection, etc.

[0083] Combination Figure 17 As shown, the locking component 1140 is used to fix the pressure strip assembly 1130 to the housing 1110. The locking component 1140 is connected to the connecting part 1133 and the structural beam 1114 respectively. The locking component 1140 can be a bolt, rivet or other connector. When using bolt connectors, it has the advantages of reliable connection and convenient disassembly. For example, the connecting part 1133 is provided with a first connecting hole and the structural beam 1114 is provided with a second connecting hole. The locking component 1140 uses a bolt assembly, which includes a stud and a nut. The stud passes through the corresponding first connecting hole and second connecting hole, and the protruding end is threadedly connected to the nut, thereby firmly fixing the connecting part 1133 (i.e., the pressure strip assembly 1130) to the structural beam 1114 (i.e., the housing 1110), ensuring the pressure strip assembly 1130 has a pressing and limiting effect on the battery cell 1120.

[0084] Typically, the locking component 1140 is made of metal. Therefore, the stop portion 1134 should also serve to stop the locking component 1140. Thus, the stop portion 1134 should be positioned on the side of the locking component 1140. This side should be understood as one side or opposite sides of the locking component 1140 in the third direction Y. For example, if the locking component 1140 is a bolt assembly with the nut of the stud protruding from the surface of the connecting portion 1133, then the height of the stop portion 1134 (the protrusion height in the second direction Z) should be greater than the height of the nut. This allows the stop portion 1134 to also stop the nut, increasing the electrical clearance and creepage distance between the connecting portion 1133 and the electrical components.

[0085] In this embodiment, the combined design of the first pressure strip 1131 and the second pressure strip 1132 can increase the rigidity and strength of the pressure strip assembly 1130 and improve the overall deformation resistance of the pressure strip assembly 1130. The connecting part 1133 is made of metal and is connected to the structural beam 1114 through the locking component 1140, which can improve the reliability of the connection. By providing a blocking part 1134 on the second pressure strip 1132, it can play a blocking role on the side of the connecting part 1133 and the locking component 1140, thereby increasing the electrical clearance and creepage distance between the connecting part 1133 and the electrical components and between the locking component 1140 and the electrical components, thereby improving the insulation protection effect and improving the overall reliability and service life of the battery device 1100.

[0086] In some embodiments, refer to Figures 7-9 and Figure 14As shown, the second pressure strip 1132 has a receiving groove 11393. At least a portion of the first pressure strip 1131 is received in the receiving groove 11393 and is attached to and connected to the bottom surface of the receiving groove 11393. Along the first direction X, the connecting portion 1133 protrudes from the bottom surface of the receiving groove 11393.

[0087] Specifically, the second direction Z can be understood as the height direction of the battery device 1100. Therefore, the first pressure strip 1131 and the second pressure strip 1132 are stacked in the height direction. By opening a receiving groove 11393 on the side of the second pressure strip 1132 facing the first pressure strip 1131, the receiving groove 11393 extends through the first direction X. The groove shape and size of the receiving groove 11393 are adapted to the cross-sectional structure and size of the first pressure strip 1131, so that the first pressure strip 1131 is at least partially received in the receiving groove 11393. The bottom surface of the first pressure strip 1131 and the bottom surface of the receiving groove 11393 can be in close contact or there can be a certain gap. The structure in which the first pressure strip 1131 is received in the receiving groove 11393 can improve the structural compactness of the pressure strip assembly 1130 and help save space in the height direction.

[0088] The first pressure strip 1131 and the second pressure strip 1132 can be sheet-like structures. In the second direction Z, the first pressure strip 1131 has a first height, and the receiving groove 11393 has a first depth. The first depth can be greater than or equal to the first height, so that the first pressure strip 1131 can be received within the receiving groove 11393 in the second direction Z. In this case, the first pressure strip 1131 can be made entirely of metal, and the second pressure strip 1132 can be made of insulating material, thereby allowing the second pressure strip 1132 to support the first pressure strip 1131. A larger area is wrapped to achieve a more reliable insulation effect; or, the first depth is less than the first height so that the first pressure strip 1131 can protrude outside the receiving groove 11393 in the second direction Z. In this case, the first pressure strip 1131 can be made of composite material, the main body of the first pressure strip 1131 can be made of insulating material, and the connecting part 1133 can be made of metal. This design can reduce the thickness of the second pressure strip 1132, thereby saving materials and reducing the overall weight of the pressure strip assembly 1130.

[0089] The first pressure strip 1131 and the second pressure strip 1132 can be connected by a fixed or detachable method, such as bonding, bolting, riveting, or snap-fit ​​connection.

[0090] Along the first direction X, the two extended ends of the first pressure strip 1131 form connecting portions 1133 (the connecting portions 1133 are used to connect with the structural beam 1114 of the housing 1110), and the connecting portions 1133 protrude from the bottom surface of the receiving groove 11393. The connecting portions 1133 can be sheet-like structures, with the top of the structural beam 1114 being the beam top surface, which can be flat. The connecting portions 1133 can overlap the top of the structural beam 1114 and fit against the beam top surface. A connecting hole can be correspondingly opened at the overlapping position of the connecting portions 1133 and the structural beam 1114, and a locking component 1140 (e.g., a stud) can be inserted into the connecting hole. It should be understood that since the connecting portions 1133 are located on the top of the structural beam 1114, the retaining portion 1134 should also be located on the top of the structural beam 1114.

[0091] In this embodiment, the receiving groove 11393 on the second pressure strip 1132 plays a role in accurately positioning and wrapping the first pressure strip 1131, effectively limiting the relative displacement between the first pressure strip 1131 and the second pressure strip 1132 along the third direction Y, reducing the loosening or misalignment of the two when subjected to force (such as the expansion force of the battery cell 1120, vibration impact force), thereby improving the overall structural rigidity and stability of the pressure strip assembly 1130, and ensuring that the pressure strip assembly 1130 can continuously and reliably press and limit the battery cell 1120.

[0092] In some embodiments, refer to Figures 11-14 As shown, the second pressure strip 1132 includes a bottom wall body 11321 and two side walls 11322 extending along the first direction X. In the third direction Y, the two side walls 11322 are arranged opposite to each other and are connected to both sides of the bottom wall body 11321 to form a receiving groove 11393 together with the bottom wall body 11321. At least a portion of the first pressure strip 1131 is received in the receiving groove 11393 and is stacked and connected to the bottom wall body 11321. The blocking portion 1134 is connected to the extension end of the side wall body 11322. Along the first direction X, the connecting portion 1133 protrudes out of the bottom wall body 11321.

[0093] Specifically, the second pressure strip 1132 includes a bottom wall 11321 and two side walls 11322. The bottom wall 11321 and the side walls 11322 can both be sheet-like or plate-like structures. The bottom wall 11321 and the two side walls 11322 all extend along the first direction X. The three can be integrally formed, with strong structural integrity, which can effectively improve the structural rigidity of the second pressure strip 1132 and reduce the risk of deformation under stress. Of course, it can also be connected by a fixed or detachable method.

[0094] In the third direction Y, two sidewall bodies 11322 are arranged in parallel relative to each other, and the bottom ends of the two sidewall bodies 11322 are vertically connected to the two sides of the bottom wall body 11321. The three together form a receiving groove 11393. The structure of the receiving groove 11393 is adapted to the cross-section of the first pressure strip 1131 and is used to receive at least part of the first pressure strip 1131.

[0095] The first pressure strip 1131 is at least partially accommodated within the receiving groove 11393. The first pressure strip 1131 and the bottom wall 11321 (which can be considered as the bottom wall of the receiving groove 11393) can be connected by a fixed or detachable method, such as bonding, bolting, riveting, or snap-fitting. The first depth of the receiving groove 11393 can be considered as being in the second direction Z. The side wall 11322 protrudes beyond the height of the bottom wall 11321. In the second direction Z, the first pressure strip 1131 has a first height. The relationship between the first height and the first depth can be referred to the example above, and will not be repeated here.

[0096] Along the first direction X, the two extended ends of the first pressure strip 1131 form a connecting portion 1133 (the connecting portion 1133 is used to connect with the structural beam 1114 of the box body 1110). The connecting portion 1133 protrudes from the bottom wall body 11321, which can be considered as the connecting portion 1133 protruding from the bottom surface of the receiving groove 11393, so that the connecting portion 1133 can overlap with the structural beam 1114, and there will be no interference between the bottom wall body 11321 and the structural beam 1114.

[0097] The blocking part 1134 is connected to the extension end of the side wall body 11322. That is, both ends of the two side wall bodies 11322 extend outward along the first direction X to form extension ends. The blocking part 1134 can be integrally formed with the extension end or connected to the extension end in a fixed or detachable manner. It protrudes from the connecting part 1133 along the first direction X and the second direction Z. When the retaining part 1134 and the extended end of the side wall 11322 are integrally formed, compared with setting the retaining part 1134 separately, this connection method has no splicing gap, strong structural integrity, and can reduce the risk of the retaining part 1134 falling off or loosening under force, ensuring that the retaining part 1134 can be continuously and stably blocked on the side of the locking component 1140. In addition, the integral forming of the side wall 11322 and the retaining part 1134 can reduce the number of parts, simplify the assembly process, and make the connection between the retaining part 1134 and the side wall 11322 more secure, reducing the risk of loosening between the two and ensuring that the retaining part 1134 can stably perform the insulating blocking function.

[0098] When the bottom wall 11321 of the second pressure strip 1132 and the two side walls 11322 are integrally formed, a "U"-shaped groove structure is formed, which significantly improves the bending and deformation resistance of the structure. It can effectively resist the expansion force and vibration impact force of the battery cell 1120, reduce the risk of plastic deformation of the second pressure strip 1132, and thus ensure the structural integrity of the receiving groove 11393, and ensure the positioning and wrapping effect of the first pressure strip 1131. In addition, the two sidewalls 11322 are arranged opposite to each other and surround the bottom wall 11321 to form a receiving groove 11393. The sidewalls 11322 can limit the two sides of the first pressure strip 1131. Combined with the bottom wall 11321 and the first pressure strip 1131 being attached and fixed, the first pressure strip 1131 is positioned in all directions from the second direction Z and the third direction Y, further limiting the relative displacement between the first pressure strip 1131 and the second pressure strip 1132, improving the overall stability of the pressure strip assembly 1130, and ensuring the pressing and limiting effect.

[0099] Of course, the baffle 1134 can also be connected to the bottom wall 11321. The baffle 1134 and the bottom wall 11321 can also be connected by fixing or detaching, or they can be manufactured by integral molding.

[0100] In this embodiment, the structure in which the bottom wall 11321 and the two side walls 11322 are connected can improve the structural rigidity and stability of the pressure strip assembly 1130, enhance the positioning effect of the receiving groove 11393 on the first pressure strip 1131, and improve the structural reliability and insulation effect of the blocking part 1134.

[0101] In some embodiments, refer to Figure 13 and Figure 14 As shown, the retaining part 1134 is integrally formed on the side wall body 11322.

[0102] Specifically, since the sidewall 11322 extends along the first direction X, the stop portion 1134 can be directly formed at the extended end of the sidewall 11322, so that the extended end of the sidewall 11322 extends to the outside of the bottom wall 11321 and protrudes at the end of the bottom wall 11321, thereby forming an outwardly protruding stop portion 1134, and thus the stop portion 1134 is correspondingly disposed on one side of the outwardly protruding connecting portion 1133.

[0103] The retaining part 1134 is integrally formed on the side wall 11322. Compared with splicing, bonding, and bolting connections, this integral structure reduces splicing gaps and weak points, resulting in a stronger overall structure. On the one hand, it effectively reduces the risk of the retaining part 1134 falling off, loosening, or breaking due to stress (such as vibration, impact, or battery expansion force transmission), ensuring that the retaining part 1134 can be stably and continuously positioned on the side of the locking component 1140 and the connecting part 1133, continuously providing insulation and isolation. On the other hand, the integral structure reduces the insulation risks caused by gaps at the splicing points, while simplifying the production process of the second pressure strip 1132. It eliminates the need to separately process the retaining part 1134 before assembly, thus reducing production errors and ensuring the positional accuracy of the retaining part 1134 and the side wall 11322. This further improves the reliability of insulation isolation between the locking component 1140 and surrounding electrical components, reducing the risk of insulation failure.

[0104] For example, the baffle 1134, the side wall 11322 and the bottom wall 11321 can be manufactured by integral molding to reduce the connection gap, make installation more convenient, and improve the overall deformation resistance of the second pressure strip 1132.

[0105] In this embodiment, the side wall 11322 and the retaining part 1134 are integrally formed, which can reduce splicing gaps and weak connection points, improve structural stability, and further improve insulation reliability.

[0106] In some embodiments, refer to Figures 7-9 , Figure 13 and Figure 14 As shown, there are two blocking parts 1134, which are arranged opposite to each other on both sides of the connecting part 1133 along the third direction Y.

[0107] Specifically, considering that electrical components are provided on both sides of the connecting portion 1133 in the third direction Y, in this example, two blocking portions 1134 are provided, and the two blocking portions 1134 are arranged opposite to each other on both sides of the connecting portion 1133 along the third direction Y. For example, both ends of the two sidewall bodies 11322 extend outward to form extension ends, and each extension end corresponds to an integrally formed blocking portion 1134. The two blocking portions 1134 are symmetrically distributed about the center line of the connecting portion 1133 (extending along the first direction X), that is, along the third direction Y, the two blocking portions 1134 are located on both sides of the connecting portion 1133, and the structure and size of the two blocking portions 1134 are completely identical.

[0108] Both blocking portions 1134 protrude along the second direction Z from the connecting portion 1133 and the locking component 1140 of the first pressure strip 1131, ensuring that the two blocking portions 1134 can block the connecting portion 1133 and the locking component 1140 on the third direction Y sides, realizing full blocking of the sides of the connecting portion 1133 and the locking component 1140, and playing the role of blocking, increasing electrical clearance and creepage distance.

[0109] In this embodiment, two blocking portions 1134 are disposed opposite each other on both sides of the connecting portion 1133 along the third direction Y, so that the connecting portion 1133 and the locking member 1140 form a double-sided blocking structure on both sides of the third direction Y, so as to fully cover the side of the locking member 1140, block the contact path between the locking member 1140 and the surrounding high-voltage electrical components, and improve the comprehensiveness of insulation protection.

[0110] In some implementations, refer to Figures 8-10 , Figure 13 and Figure 14 As shown, the pressure strip assembly 1130 also includes an insulating film 1135, which is attached to the side of the first pressure strip 1131 away from the second pressure strip 1132 and extends to the groove wall of the receiving groove 11393; the insulating film 1135 is provided to avoid the connecting portion 1133.

[0111] Specifically, the insulating film 1135 is made of a flexible insulating material with excellent insulation properties, such as polyimide (PI) film, polyvinylidene fluoride (PVDF) film, or polytetrafluoroethylene (PTFE) film. The insulating film 1135 is adhered to the side of the first pressure strip 1131 away from the second pressure strip 1132, that is, the insulating film 1135 is adhered to the side of the first pressure strip 1131 opposite to the bottom surface of the receiving groove 11393. The adherence of the insulating film 1135 to this side ensures complete coverage of this side of the first pressure strip 1131. Therefore, the insulating film 1135 can form an insulating cover on this side of the first pressure strip 1131, reducing the risk of contact between the first pressure strip 1131 (metallic material) and other electrical components inside the battery device 1100. The insulating film 1135 and the side of the first pressure strip 1131 can be fixed together by adhesive bonding.

[0112] Furthermore, the insulating film 1135 extends from the side of the first pressure strip 1131 away from the second pressure strip 1132 towards the groove wall of the receiving groove 11393. The insulating film 1135, extending to the groove wall, adheres to the groove wall, thus covering the gap between the side of the first pressure strip 1131 and the groove wall of the receiving groove 11393. This helps reduce the risk of insulation blind spots at the gap and further improves the insulation reliability of the pressure strip assembly 1130. The insulating film 1135 can be fixed to the groove wall by adhesive bonding.

[0113] The insulating film 1135 is designed to avoid the connecting part 1133, that is, the insulating film 1135 does not cover the connecting part 1133 of the first pressure strip 1131. An avoidance notch is formed near the connecting part 1133. The size of the avoidance notch is adapted to the size of the connecting part 1133, ensuring that the connecting part 1133 is not obstructed and that the connection between the connecting part 1133 and the structural beam 1114 of the box body 1110 and the assembly of the locking component 1140 are not affected. This achieves both insulation protection and reduces the interference of the insulating film 1135 on the original connection structure, taking into account both insulation performance and connection reliability.

[0114] In this embodiment, by providing an insulating film 1135, the risk of the first pressure strip 1131 coming into contact with other electrical components can be reduced, thereby improving the insulation protection effect.

[0115] In some implementations, refer to Figure 8 , Figure 9 , Figure 13 and Figure 14 As shown, the pressure strip assembly 1130 also includes an insulating film 1135, which is attached to the side of the first pressure strip 1131 away from the second pressure strip 1132 and extends to the surface of the two side walls 11322 away from the bottom wall 11321; the insulating film 1135 is provided to avoid the connecting portion 1133.

[0116] Specifically, the way the insulating film 1135 adheres to the side of the first pressure strip 1131 and the way it avoids the connecting portion 1133 can be found in the above example, and will not be repeated here. In this embodiment, the insulating film 1135 extends to the side of each side wall 11322 facing the receiving groove 11393 and the side of the side wall 11322 away from the bottom wall 11321 (or the top surface 11323).

[0117] In this example, taking the second direction Z as the vertical direction as an example, the side of the sidewall 11322 facing the receiving groove 11393 can be understood as the side of the sidewall 11322, which is the groove wall of the receiving groove 11393. The surface of the sidewall 11322 away from the bottom wall 11321 can be understood as the top surface 11323 of the sidewall 11322. When the box body 1110 includes a box cover, the box cover is connected to the structural beam 1114 and covers the opening at the top of the partition space 1113. The top surface 11323 of the sidewall 11322 is the surface opposite to the box cover. The insulating film 1135 can be fixed to the top surface 11323 by adhesive.

[0118] In this embodiment, the insulating film 1135 is attached to the side of the first pressure strip 1131 away from the second pressure strip 1132, forming a complete insulating cover on that side of the first pressure strip 1131, reducing its contact with other electrical components inside the battery device 1100; at the same time, the insulating film 1135 extends from the side of the two side walls 11322 facing the receiving groove 11393 (i.e., the groove wall of the receiving groove 11393) to the surface of the two side walls 11322 away from the bottom wall 11321, so as to cover the top surface (i.e., the top surface 11323) of the side walls 11322, further expanding the insulation protection range, reducing the risk of direct contact between the top surface 11323 of the side walls 11322 and surrounding electrical components, thereby reducing the risk of short circuit, reducing insulation blind spots, and significantly improving the insulation reliability of the pressure strip assembly 1130.

[0119] In some implementations, refer to Figures 7-9 , Figures 11-14 As shown, the pressure strip assembly 1130 also includes a buffer pad 1136, which is attached to the side of the first pressure strip 1131 away from the bottom surface of the receiving groove 11393 and protrudes from the opening of the receiving groove 11393.

[0120] Specifically, the cushioning pad 1136 is made of an insulating material with elastic cushioning properties. For example, the cushioning pad 1136 can be made of silicone, EPDM rubber, foamed polyurethane, neoprene rubber, etc. The buffer pad 1136 is attached to the side of the first pressure strip 1131 away from the bottom surface of the receiving groove 11393. That is, the first pressure strip 1131 has a side facing away from the bottom surface of the receiving groove 11393, and the buffer pad 1136 is attached to this side. For example, the first pressure strip 1131 has a first side and a second side opposite to each other. The first side abuts against the bottom surface of the receiving groove 11393, and the second side is attached to the buffer pad 1136. Alternatively, if an insulating film 1135 is provided, the insulating film 1135 is attached to the second side, and the buffer pad 1136 is attached to the insulating film 1135 on the second side, ensuring the stability of the attachment with the first pressure strip 1131. The attachment range of the buffer pad 1136 is adapted to the main body of the first pressure strip 1131 located in the receiving groove 11393, and does not cover (or avoid) the connecting part 1133 of the first pressure strip 1131.

[0121] After the buffer pad 1136 is attached, it protrudes out of the groove of the receiving groove 11393 along the second direction Z. That is, the height of the top of the buffer pad 1136 is higher than the height of the groove of the receiving groove 11393. The height of the protrusion can be between 1mm and 5mm. The outline of the protrusion can be matched with the outline of the groove of the receiving groove 11393.

[0122] The buffer pad 1136 is used to cushion the pressure strip assembly 1130. For example, if the housing 1110 includes a lid that covers the opening of the receiving groove 11393, then by providing the outwardly protruding buffer pad 1136, the risk of the lid coming into contact with the upper surface of the second pressure strip 1132 can be reduced, thus protecting both the lid and the second pressure strip 1132. For example, when the battery device 1100 is subjected to vibration and impact, and the expansion force of the battery cell 1120 is transmitted to the pressure strip assembly 1130, the buffer pad 1136 can provide cushioning and protection.

[0123] In this embodiment, the buffer pad 1136 is made of elastic insulating material and is attached to the side of the first pressure strip 1131 away from the bottom surface of the receiving groove 11393 and protrudes from the groove opening. When the battery device 1100 is subjected to vibration and impact, or when the battery cell 1120 expands and deforms during charging and discharging, the buffer pad 1136 can absorb the impact force through its own elastic deformation, reducing the risk of hard collision between the first pressure strip 1131 and other components inside and above the battery device 1100, effectively reducing abnormal noise generated by the collision, and improving the reliability of the battery device 1100.

[0124] In addition, the buffer pad 1136 also has insulating properties. It is attached to the outer surface of the first pressure strip 1131 and can form an insulating buffer layer between the first pressure strip 1131 and the surrounding components, further isolating the contact path between the first pressure strip 1131 (metal material) and other electrical components. It works in conjunction with the insulating structure of the receiving groove 11393 to jointly improve the overall insulation protection reliability of the pressure strip assembly 1130.

[0125] In some implementations, refer to Figure 15 and Figure 16 As shown, the pressure strip assembly 1130 also includes a pad 1137, which is connected to the side of the connecting portion 1133 facing the structural beam 1114. The pad 1137 abuts against the structural beam 1114, and the locking member 1140 is configured to connect the connecting portion 1133, the pad 1137 and the structural beam 1114.

[0126] Specifically, the pad 1137 serves to support the connection between the connecting part 1133 and the structural beam 1114. Considering that the connecting part 1133 may be suspended after extending or protruding from the second pressure strip 1132, when a gap is formed between the connecting part 1133 and the structural beam 1114, the pad 1137 is provided between the connecting part 1133 and the structural beam 1114. The pad 1137 can be connected to the side of the connecting part 1133 facing the gap, thereby supporting the connecting part 1133 and ensuring the stability of the connection between the connecting part 1133 and the structural beam 1114.

[0127] The pad 1137 may be annular to avoid the connection holes on the connecting part 1133 and the structural beam 1114, or the pad 1137 may be sheet-like with through holes at the positions corresponding to the connection holes for inserting locking components (e.g., studs).

[0128] In this embodiment, the pad 1137 abuts against the connecting part 1133 and the structural beam 1114, serving as a support to improve connection stability. In addition, the pad 1137 also increases the contact friction between the connecting part 1133 and the structural beam 1114. Combined with the locking force of the locking component 1140, it can effectively reduce the risk of relative slippage between the connecting part 1133 and the structural beam 1114, reduce the probability of the locking component 1140 loosening due to slippage, ensure the connection stability between the pressure strip assembly 1130 and the housing 1110, and thus ensure the pressing and limiting effect of the pressure strip assembly 1130 on the battery cell 1120.

[0129] In some embodiments, the pad 1137 is made of a metallic material.

[0130] Specifically, the pad 1137 serves as a support between the connection part 1133 and the structural beam 1114. In addition, when the locking component 1140 uses a bolt assembly, the stud also needs to pass through the pad 1137. Therefore, the metal pad 1137 has greater structural strength and rigidity, stronger support reliability, and can reduce the risk of deformation of the connection part 1133 during connection, which is conducive to improving the connection reliability between the connection part 1133, the pad 1137 and the structural beam 1114.

[0131] In a plane perpendicular to the second direction Z, the outer dimensions of the pad 1137 can be smaller than the outer dimensions of the connecting part 1133. That is, the projected area of ​​the pad 1137 in the projection plane perpendicular to the second direction Z is smaller than the projected area of ​​the connecting part, thereby further reducing the volume of the pad 1137 and thus reducing the weight.

[0132] In this embodiment, the metal pad 1137 has greater rigidity and strength, which can enhance the support effect and improve the connection reliability between the connecting part 1133, the pad 1137 and the structural beam 1114.

[0133] In some embodiments, considering that both the connecting part 1133 and the structural beam 1114 are made of metal, the pad 1137 may also be made of an insulating material, such as silicone, EPDM rubber, foamed polyurethane, chloroprene rubber, etc.

[0134] The pad 1137 serves as a support between the connection 1133 and the structural beam 1114, while also providing insulation. This reduces the risk of direct contact between the connection 1133 and the structural beam 1114, prevents them from forming a conductive path, further strengthens the insulation protection system of the battery device 1100, and reduces the risk of insulation failure.

[0135] The insulating stop portion 1134 on the second pressure strip 1132 isolates the locking component 1140 from the surrounding electrical components, and the insulating pad 1137 isolates the connection portion 1133 from the structural beam 1114. The insulating pad 1137 and the stop portion 1134 form a double insulation protection system, which fully covers the connection portion 1133 between the pressure strip assembly 1130 and the housing 1110, significantly improving the insulation reliability of the battery device 1100.

[0136] In some embodiments, the pad 1137 is a pad made of an elastic material.

[0137] Specifically, considering the impact of vibration and shock on the battery device 1100 and the expansion force transmission of the battery cell 1120 on the pressure strip assembly 1130, the pad 1137 is made of an elastic material, giving it a certain degree of elasticity. The pad 1137 is positioned between the connecting part 1133 and the structural beam 1114. For example, when the battery device 1100 is subjected to vibration and shock, the pad 1137 can absorb vibration energy through its own elastic deformation, mitigating the hard collision between the connecting part 1133 and the structural beam 1114, reducing the risk of wear caused by long-term vibration friction between the metal connecting part 1133 and the structural beam 1114, and effectively reducing abnormal noise caused by collision, thereby improving the reliability of the battery device 1100 and the service life of its components.

[0138] In this embodiment, the pad 1137 is made of insulating or elastic material, which can play a more positive role in buffering vibration and improving the insulation protection effect of the connection 1133.

[0139] In some implementations, refer to Figure 15 and Figure 16 As shown, the battery device 1100 also includes a busbar component electrically connected to the battery cell 1120; the side of the second pressure bar 1132 facing the battery cell 1120 has a relief groove 1138, the relief groove 1138 is recessed inward along the second direction Z toward the direction away from the battery cell 1120, and the relief groove 1138 is at least used to avoid the busbar component.

[0140] Specifically, after the pressure strip assembly 1130 is assembled, the second pressure strip 1132 is positioned opposite the top of the battery cell 1120 to the side facing the battery cell 1120. The top of the battery cell 1120 has a protruding part (such as a terminal post). The electrical connection between the battery cells 1120 requires a busbar, wire, or other connecting component (transfer component). The clearance groove 1138 is provided to allow the second pressure strip 1132 to avoid the above-mentioned busbar components. The protruding part of the battery cell 1120 and the connecting component are all accommodated in the clearance groove 1138, which can reduce the risk of hard contact between the second pressure strip 1132 and the protruding part and connecting component of the battery cell 1120.

[0141] Along the first direction X, the opening length of the clearance groove 1138 should be less than the extension length of the second pressure strip 1132. Typically, the opening length of the clearance groove 1138 is equal to 0.5 to 5 times the thickness of the battery cell 1120 (taking the square battery cell 1120 as an example, the distance between two opposite sides in the first direction X is the thickness). Generally, the opening length of the clearance groove 1138 is not greater than half the extension length of the second pressure strip 1132, so as not to affect the structural rigidity and strength of the second pressure strip 1132.

[0142] In this embodiment, by providing a clearance groove 1138, the clearance groove 1138 can accommodate the top structure of the battery cell 1120 and allow passage of the busbar (and electrical components) used for electrically connecting the battery cell 1120, thereby enabling the second pressure bar 1132 to be closer to the battery cell 1120 in the second direction Z, which helps to save space in the battery device 1100 in the second direction Z and improve the space utilization of the battery device 1100.

[0143] In some embodiments, refer to Figures 7-9 , Figure 13 and Figure 14 As shown, the first pressure strip 1131 and the second pressure strip 1132 are bonded and fixed together.

[0144] Specifically, the first pressure strip 1131 and the second pressure strip 1132 can be fixed together by an adhesive 1139. The adhesive 1139 has the characteristics of high temperature resistance, vibration resistance and high bonding strength, and does not affect the insulation performance of the second pressure strip 1132. The adhesive 1139 is evenly coated between the mating surfaces of the first pressure strip 1131 and the second pressure strip 1132 to reduce defects such as excess glue or coating blind spots, and ensure the firmness of the bond.

[0145] In this embodiment, bonding and fixing facilitate the formation of a seamless integrated structure between the first pressure strip 1131 and the second pressure strip 1132. The adhesive 1139 on the mating surface has strong adhesion after curing, which can effectively limit the relative slippage between the two along the first direction X and the third direction Y, as well as the separation tendency along the second direction Z. It can effectively resist the vibration and impact of the battery device 1100 and the force transmitted by the expansion force of the battery cell 1120, ensuring the overall structural integrity of the pressure strip assembly 1130 and ensuring the pressing and limiting effect on the battery cell 1120.

[0146] In addition, the bonding and fixing method eliminates the need for auxiliary fixing structures such as locking holes and snap-fit ​​grooves on the first pressure strip 1131 and the second pressure strip 1132, reducing the impact of additional structures on the rigidity of the pressure strip assembly 1130 and simplifying the processing technology of the pressure strip assembly 1130. During assembly, only the adhesive on the bonding surface, precise alignment, and bonding and curing are required, without the need for additional locking or snap-fit ​​operations, which greatly simplifies the assembly process, shortens the assembly time, and improves the overall assembly efficiency of the pressure strip assembly 1130.

[0147] In some embodiments, refer to Figure 9 As shown, the surface of the first pressure strip 1131 is disposed opposite to the bottom surface of the receiving groove 11393, and the bottom surface of the groove is provided with a connecting groove 11391; the pressure strip assembly 1130 also includes an adhesive 1139, which is housed in the connecting groove 11391 and is connected to the first pressure strip 1131 and the second pressure strip 1132.

[0148] Specifically, the connecting groove 11391 is formed on the bottom surface of the receiving groove 11393. The connecting groove 11391 extends along the first direction X and can be continuous or segmented. In the first direction X, the length of the connecting groove 11391 should be less than the length of the bottom surface of the receiving groove 11393. The length of the continuous connecting groove 11391 should be less than or equal to half the length of the bottom surface of the receiving groove 11393 to ensure the structural strength and rigidity of the second pressure strip 1132. In the third direction Y, the width of the connecting groove 11391 is typically less than or equal to three-quarters of the width of the bottom surface of the receiving groove 11393.

[0149] The connecting groove 11391 is used to fill the adhesive 1139. The amount of adhesive 1139 is matched with the volume of the connecting groove 11391 to ensure that the adhesive 1139 is completely contained in the groove and does not overflow to the bottom surface of the groove outside the connecting groove 11391 before curing. After curing, it forms a strong bond with the groove wall of the connecting groove 11391.

[0150] The adhesive 1139 can be selected from those that are suitable for the internal working conditions of the battery device 1100, and have high temperature resistance, vibration resistance, and high bonding strength, and also have insulating properties. The adhesive 1139 is housed in the connecting groove 11391. After curing, the adhesive 1139 is tightly bonded to the groove wall of the connecting groove 11391 and the opposite surface of the first pressure strip 1131, thereby achieving a fixed connection between the first pressure strip 1131 and the second pressure strip 1132.

[0151] In this embodiment, the connecting groove 11391 provides a space for the adhesive 1139. The "interlocking" bonding structure formed after the adhesive 1139 is cured can more effectively resist vibration impact, shear force and separation force caused by battery expansion force, further strengthen the bonding and fixing strength between the first pressure strip 1131 and the second pressure strip 1132, and improve the overall structural stability of the pressure strip assembly 1130.

[0152] Furthermore, after the adhesive 1139 is housed within the connecting groove 11391, the thickness of the adhesive 1139 can be precisely controlled, ensuring a uniform and consistent gap between the first pressure strip 1131 and the bottom surface of the groove. This also ensures the assembly accuracy of the first pressure strip 1131 within the receiving groove 11393, thereby ensuring a uniform distribution of the clamping and limiting force of the pressure strip assembly 1130 on the battery cell 1120. Moreover, since the adhesive 1139 is housed within the connecting groove 11391, the gap between the first pressure strip 1131 and the second pressure strip 1132 in the second direction Z can be reduced, which helps to improve the space utilization rate of the pressure strip assembly 1130 in the second direction Z.

[0153] In some embodiments, refer to Figure 10 As shown, the second pressure strip 1132 includes a bottom wall body 11321 extending along the first direction X. Along the first direction X, the bottom wall body 11321 has an insertion groove 11392. The first pressure strip 1131 is inserted into the insertion groove 11392 and protrudes from the insertion groove 11392 at both ends to form a connecting portion 1133. The blocking portion 1134 is connected to the bottom wall body 11321.

[0154] Specifically, the bottom wall 11321 can be a plate-like structure, made of insulating material, and is elongated in shape. The length of the bottom wall 11321 is adapted to the length of the first pressure strip 1131, and the bottom wall 11321 is used to support and position the first pressure strip 1131. Along the first direction X, the bottom wall 11321 has an insertion groove 11392, which is a through groove 11392 opened through the bottom wall 11321 along the first direction X. The shape of the groove opening is adapted to the cross-sectional contour of the first pressure strip 1131, ensuring that the first pressure strip 1131 can be smoothly inserted into the groove without loosening. Along the second direction Z, the insertion groove 11392 is located inside the bottom wall 11321, and along the first direction X, the two ends of the insertion groove 11392 form grooves. The width of the insertion slot 11392 (along the third direction Y) is adapted to the width of the first pressure strip 1131, thereby limiting the first pressure strip 1131 in the third direction Y.

[0155] The first pressure strip 1131 is inserted into the insertion groove 11392. After insertion, the first pressure strip 1131 and the groove wall of the insertion groove 11392 can be closely fitted or have a small gap, so as to achieve precise positioning of the first pressure strip 1131 in the second direction Z and the third direction Y. Along the first direction X, the length of the first pressure strip 1131 is greater than the length of the insertion groove 11392. Therefore, both ends of the first pressure strip 1131 protrude out of the insertion groove 11392. The protruding part is the connecting part 1133. The length of the connecting part 1133 is based on not interfering with the connection with the structural beam 1114 of the box body 1110. The protruding lengths of both ends can be the same to ensure the symmetrical fit of the connecting part 1133 and the structural beam 1114.

[0156] The blocking part 1134 is connected to the bottom wall body 11321. The blocking part 1134 is made of insulating material and can be integrally formed with the bottom wall body 11321. The position of the blocking part 1134 corresponds to the connecting part 1133. Specifically, along the first direction X, the two ends of the bottom wall body 11321 are provided with blocking parts 1134 at the positions corresponding to the connecting parts 1133 (two can be provided opposite each other along the third direction Y). The blocking part 1134 protrudes upward from the surface of the bottom wall body 11321 along the second direction Z and is blocked on the side of the locking member 1140. The blocking part 1134 can also protrude downward from the surface of the bottom wall body 11321 along the second direction Z and be blocked on the side of the locking member 1140.

[0157] In this embodiment, the insertion groove 11392 in the bottom wall 11321 can realize the quick insertion and positioning of the first pressure strip 1131 without complicated alignment adjustment, which greatly improves the assembly efficiency of the pressure strip assembly 1130, and the insertion fit is accurate, ensuring the relative position accuracy of the first pressure strip 1131 and the second pressure strip 1132.

[0158] In addition, the first pressure strip 1131 is inserted into the insertion groove 11392 of the bottom wall 11321. The groove wall of the insertion groove 11392 can limit the first pressure strip 1131 in all directions from the second direction Z and the third direction Y, effectively restricting the separation tendency of the first pressure strip 1131 along the second direction Z and the sliding along the third direction Y, and significantly improving the positioning stability. At the same time, the two ends of the first pressure strip 1131 protrude from the insertion groove 11392 to form the connecting part 1133. The insertion structure can effectively disperse the stress when the connecting part 1133 is under force, reduce the risk of breakage at the connection between the connecting part 1133 and the second pressure strip 1132, and improve the structural reliability of the connecting part 1133.

[0159] In one specific embodiment, refer to Figures 2-17As shown, the battery device 1100 includes a housing 1110, a battery cell 1120, a pressure strip assembly 1130, and a locking component 1140. The housing 1110 includes two spaced and oppositely arranged structural beams 1114, forming a space 1113 between the two structural beams 1114. The battery cell 1120 is disposed within the space 1113. The pressure strip assembly 1130 includes a first pressure strip 1131 and a second pressure strip 1132, both extending along a first direction X. In the second direction Z, the first pressure strip 1131 overlaps the side of the second pressure strip 1132 facing away from the battery cell 1120. The two ends of the first pressure strip 1131 protrude from the second pressure strip 1132 along the first direction X, forming a connecting portion 1133. 33 is disposed opposite to the structural beam 1114; along the third direction Y, a portion of the second pressure strip 1132 forms a retaining portion 1134 on at least one side of the connecting portion 1133, the retaining portion 1134 protrudes from the connecting portion 1133 along both the first direction X and the second direction Z, the first direction X, the second direction Z and the third direction Y are mutually perpendicular; the connecting portion 1133 is made of metal, and the retaining portion 1134 is made of insulating material; the locking member 1140 is connected between the connecting portion 1133 and the structural beam 1114, and the retaining portion 1134 is abutted on the side of the locking member 1140; the second pressure strip 1132 has a receiving groove 11393, and the first pressure strip 1131 is at least partially received in the receiving groove 11393 along the first direction X The connecting portion 1133 protrudes from the bottom surface of the groove; the second pressure strip 1132 includes a bottom wall body 11321 extending along the first direction X and two side wall bodies 11322. In the third direction Y, the two side wall bodies 11322 are arranged opposite to each other and are connected to both sides of the bottom wall body 11321 to form a receiving groove 11393 together with the bottom wall body 11321. The first pressure strip 1131 is at least partially received in the receiving groove 11393 and is stacked and connected to the bottom wall body 11321. The blocking portion 1134 is connected to the extended end of the side wall body 11322; along the first direction X, the connecting portion 1133 protrudes from the bottom wall body 11321; the blocking portion 1134 is integrally formed on the side wall body 11322; the blocking portion 1134 is provided with Two, along a third direction Y, two blocking portions 1134 are disposed opposite to each other on both sides of the connecting portion 1133; the pressure strip assembly 1130 also includes an insulating film 1135, which is attached to the side of the first pressure strip 1131 away from the second pressure strip 1132, and extends to the side of the two side walls 11322 facing the receiving groove 11393, and extends to the surface of the two side walls 11322 away from the bottom wall 11321; the insulating film 1135 is disposed to avoid the connecting portion 1133; the pressure strip assembly 1130 also includes a buffer pad 1136, which is attached to the side of the first pressure strip 1131 away from the bottom surface of the receiving groove 11393, and protrudes from the opening of the receiving groove 11393;The pressure strip assembly 1130 also includes a pad 1137, which is connected to the side of the connecting portion 1133 facing the structural beam 1114. The pad 1137 abuts against the structural beam 1114. The locking member 1140 is configured to connect the connecting portion 1133, the pad 1137, and the structural beam 1114. The pad 1137 is made of metal. The battery device 1100 also includes a busbar that is electrically connected to the battery cell 1120. The side of the second pressure strip 1132 facing the battery cell 1120 has a relief groove 1138 for relief. The groove 1138 is recessed inward along the second direction Z towards the direction away from the battery cell 1120, and the clearance groove 1138 is at least used to avoid the busbar component; the first pressure strip 1131 and the second pressure strip 1132 are bonded and fixed together; the surface of the first pressure strip 1131 is disposed opposite to the bottom surface of the receiving groove 11393, and the bottom surface of the groove is provided with a connecting groove 11391; the pressure strip assembly 1130 also includes an adhesive 1139, which is housed in the connecting groove 11391 and connected to the first pressure strip 1131 and the second pressure strip 1132.

[0160] Structural beam 1114 may be a part of the second part 1112 described above. For example, the second part 1112 includes a base plate and a frame, which together enclose an accommodating space with an open opening. The first part 1111 is a cover, which is opposite to the base plate and covers the open opening of the frame to close the accommodating space. The two structural beams 1114 are located within the accommodating space and separate it. For example, they can separate the accommodating space into a battery compartment and a power distribution compartment. The battery compartment can be understood as a partition space 1113, in which battery cells 1120 are housed. The power distribution compartment can house high-voltage distribution components such as high-voltage boxes. For details, please refer to the description of the above embodiments; further details will not be repeated here.

[0161] According to some embodiments of this application, refer to Figure 1 As shown, this application also provides an electrical device, which includes the battery device 1100 in the above embodiments. The battery device 1100 is used to store or provide electrical energy.

[0162] The technical solutions described in the embodiments of this application are applicable to various electrical devices that use battery cells 1120, such as mobile phones, portable devices, laptops, electric vehicles, electric toys, power tools, vehicles 1000, ships and spacecraft, etc. For example, spacecraft include airplanes, rockets, space shuttles and spacecraft.

[0163] Please refer to Figure 1 , Figure 1This is a schematic diagram of the structure of a vehicle 1000 provided in some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 1100 is provided inside the vehicle 1000, and the battery device 1100 can be located at the bottom, front, or rear of the vehicle 1000. The battery device 1100 can be used to power the vehicle 1000; for example, the battery device 1100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 1200 and a motor 1300. The controller 1200 is used to control the battery device 1100 to supply power to the motor 1300, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.

[0164] The examples of electrical devices in this application are based on the examples of the battery device 1100 described above. The examples of electrical devices include all the technical effects of the examples of the battery device 1100 described above, and will not be repeated here.

[0165] The above are merely preferred embodiments of this application, and only specifically describe the technical principles of this application. These descriptions are only for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application, as well as other specific embodiments of this application that can be conceived by those skilled in the art without creative effort, should be included within the scope of protection of this application.

Claims

1. A battery device, characterized by, include: The box body includes two spaced and oppositely arranged structural beams, with a spaced interval between the two structural beams; A single battery cell is disposed within the spaced space; The pressure strip assembly includes a first pressure strip and a second pressure strip, both extending along a first direction. In a second direction, the first pressure strip is stacked on the side of the second pressure strip opposite to the battery cell. Both ends of the first pressure strip protrude from the second pressure strip along the first direction to form connecting portions, which are disposed opposite to the structural beam. Along a third direction, a portion of the second pressure strip forms a retaining portion on at least one side of the connecting portion. The retaining portion protrudes from the connecting portion along both the first and second directions, and the first, second, and third directions are mutually perpendicular. The connecting portion is made of metal, and the retaining portion is made of insulating material. A locking component is connected between the connecting part and the structural beam, and the blocking part surrounds the locking component.

2. The battery device as claimed in claim 1, characterized in that, The second pressure strip has a receiving groove, at least a portion of the first pressure strip is received in the receiving groove, and the connecting portion protrudes from the bottom surface of the receiving groove along the first direction.

3. The battery device as claimed in claim 2, characterized in that, The second pressure strip includes a bottom wall body and two side walls extending along the first direction. In the third direction, the two side walls are arranged opposite to each other and are connected to both sides of the bottom wall body to form the receiving groove together with the bottom wall body. At least a portion of the first pressure strip is received in the receiving groove to be stacked and connected to the bottom wall body. The blocking portion is connected to the extension end of the side wall body. Along the first direction, the connecting portion protrudes from the bottom wall body.

4. The battery device as claimed in claim 3, characterized in that, The retaining part is integrally formed on the side wall.

5. The battery device according to any one of claims 1-4, characterized in that, The connecting portion is provided in two parts, and along the third direction, the two connecting portions are arranged opposite to each other on both sides of the connecting portion.

6. The battery device as claimed in claim 3, characterized in that, The pressure strip assembly further includes an insulating film, which is attached to the side of the first pressure strip away from the second pressure strip and extends to the side of the two side walls facing the receiving groove, and extends to the surface of the two side walls away from the bottom wall; the insulating film is disposed to avoid the connecting portion.

7. The battery device as claimed in claim 2 or 3, characterized in that, The pressure strip assembly also includes a cushioning pad, which is attached to the side of the first pressure strip away from the bottom surface of the receiving groove and protrudes from the opening of the receiving groove.

8. The battery device according to any one of claims 1-4, characterized in that, The pressure strip assembly also includes a pad body connected to the side of the connecting portion facing the structural beam, the pad body abutting against the structural beam, and the locking member configured to connect the connecting portion, the pad body, and the structural beam.

9. The battery device as claimed in claim 8, characterized in that, The pad is made of metal.

10. The battery device according to any one of claims 1-4, characterized in that, The battery device further includes a busbar component electrically connected to the battery cell; the side of the second pressure bar facing the battery cell has a relief groove, the relief groove being recessed inward along the second direction toward the direction away from the battery cell, the relief groove being at least used to avoid the busbar component.

11. The battery device according to any one of claims 1-4, characterized in that, The first pressure strip and the second pressure strip are bonded and fixed together.

12. The battery device as claimed in claim 2 or 3, characterized in that, The surface of the first pressure strip is disposed opposite to the bottom surface of the receiving groove, and a connecting groove is provided on the bottom surface of the groove; the pressure strip assembly also includes an adhesive, which is contained in the connecting groove and is connected to the first pressure strip and the second pressure strip.

13. The battery device according to any one of claims 1-4, characterized in that, The second pressure strip includes a bottom wall extending along the first direction. Along the first direction, the bottom wall has an insertion groove. The first pressure strip is inserted into the insertion groove and protrudes from both ends of the insertion groove to form the connecting portion. The blocking portion is connected to the bottom wall.

14. An electrical appliance, characterized in that, The electrical device includes a battery device as described in any one of claims 1-13, the battery device being used to store or provide electrical energy.

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