Chip assembly, battery pack and electric equipment

Abstract

The utility model relates to a chip assembly, a battery pack and electric equipment, and relates to the technical field of power batteries. The chip assembly comprises a chip body, an insulating layer and a heat-conducting glue layer, and a cold plate is arranged on one side of the chip body and used for dissipating heat of the chip body. The insulating layer is arranged between the chip body and the cold plate. The heat-conducting glue layer is arranged between the chip body and the insulating layer. Burrs can be formed in the chip body in the assembling process, part of the burrs are located on the side, close to the heat-conducting glue layer, of the chip body, and the burrs are completely covered with the heat-conducting glue layer. The chip assembly can solve the problem that after the chip countersunk head area position is welded, burrs are likely to be formed, an insulating layer between the chip and the cold plate is damaged, and short circuit is caused.

Description

Technical Field

[0001] The present application relates to the field of power battery technology, and in particular, to a battery cell assembly, a battery pack, and an electrical device. Background Art

[0002] During assembly and use, a cold plate is installed at the output terminal of the battery cell to dissipate heat. A harmonica tube structure is installed on the cold plate at the corresponding position of the plate to provide cooling. To ensure effective insulation, an insulating layer is also installed between the plate and the harmonica tube structure.

[0003] However, when the bar is connected to the output end of the battery cell, when the thickness of the bar is relatively thick, it is usually necessary to perform a sinking treatment on the welding surface of the bar and the battery cell to ensure the thickness of the welding area. At this time, there are often burrs formed by welding in the sinking area. The above burrs can easily pierce the insulation layer when the cold plate is set, thereby causing the risk of short circuit between the bar and the cold plate. Utility Model Content

[0004] The purpose of this application is to provide a bar assembly, a battery pack and an electrical device, which can solve the problem that burrs are easily formed in the countersunk area of ​​the bar after welding, damaging the insulation layer between the bar and the cold plate and causing a short circuit.

[0005] To achieve the above objectives, according to the first aspect of the present application, an embodiment of the present application provides a flap assembly, comprising a flap body, an insulating layer, and a thermally conductive adhesive layer. A cold plate is disposed on one side of the flap body to dissipate heat from the flap body. The insulating layer is disposed between the flap body and the cold plate. The thermally conductive adhesive layer is disposed between the flap body and the insulating layer. Burrs may form on the flap body during assembly, with some burrs located on the side of the flap body closest to the thermally conductive adhesive layer, which is completely covered by the thermally conductive adhesive layer.

[0006] Based on the above-mentioned embodiments of the present application, by providing a thermally conductive adhesive layer between the blade body and the insulating layer, on the one hand, the thermally conductive adhesive layer can be used to isolate the blade body from the insulating layer, thereby preventing burrs on the blade body from damaging the insulating layer. On the other hand, the provision of the thermally conductive adhesive layer can also fill and conduct heat to the upper surface of the blade body, ensuring that there is sufficient heat dissipation area between the blade body and the cold plate. Furthermore, the provision of the thermally conductive adhesive layer can also reduce the height difference problem caused by the blade body and structures such as the battery cell module during the manufacturing and assembly process, thereby ensuring the consistency of the heat dissipation contact surface between the blade body and the cold plate and ensuring the heat dissipation effect.

[0007] In some embodiments, a sink groove is provided on the side of the tab body facing the cold plate, and the thermal conductive adhesive layer covers the sink groove.

[0008] Based on the above-mentioned embodiments of this application, the provision of the sink groove ensures the thickness of the welding area when welding the battery cell to the main body, thereby ensuring the stability of the connection and conduction between the two. Covering the sink groove with a layer of thermally conductive adhesive can not only prevent burrs formed at the sink groove location from damaging the insulation layer, but also fill the sink groove to ensure sufficient heat dissipation area between the main body of the battery cell and the cold plate.

[0009] In some embodiments, a rubber blocking structure is provided on the side of the tab body, and the rubber blocking structure is configured as one of insulating foam, a rubber blocking plate, and a rubber blocking ridge.

[0010] Based on the above-mentioned embodiments of the present application, by providing a glue blocking structure on the side of the tab body, it is possible to prevent the thermal conductive glue layer from flowing to both sides in a molten state and affecting the connection, conduction and use of other components.

[0011] In some embodiments, the tab assembly further includes a connecting bracket, which is mounted on a mounting beam on the side of the cell module. The connecting bracket includes a frame and a glue overflow plate. The frame includes a bottom plate and at least two side plates. The side plates and the bottom plate together define a connecting cavity with at least one side opening. The tab body extends from the cell module into the connecting cavity. A glue overflow plate is provided on one side of the frame. The glue overflow plate is connected to the frame and extends toward the cell module. The glue overflow plate is located between the cell module and the tab body.

[0012] Based on the above-mentioned embodiments of the present application, by providing a connecting bracket, the tab body and other connecting and conducting structures are connected and conducted within the connecting cavity of the bracket body. In this case, the bracket body primarily serves as an insulation protection. Furthermore, by providing a glue overflow plate, the extending structure of the tab body from the cell module to the bracket body can be insulated and protected, thereby isolating the tab body from the mounting beam, further enhancing the insulation protection of the tab assembly.

[0013] In some embodiments, glue-blocking wing walls are provided on both sides of the glue-overflow plate, and the glue-overflow plate and the glue-blocking wing walls together form a glue-overflow groove, and the tab body is at least partially located in the glue-overflow groove.

[0014] Based on the above-mentioned embodiments of the present application, a glue overflow groove is formed by the glue-blocking wing wall and the glue overflow plate. The cross-section of the glue overflow groove can be set to a U-shaped structure. The setting of the glue-blocking wing wall can not only further extend the creepage distance from the bar body to the mounting beam, but also prevent the thermal conductive glue layer on the bar body from overflowing to both sides when it melts.

[0015] In some embodiments, the overflow plate is connected to one of the side plates, and the overflow plate and the side plate are arranged at an angle.

[0016] Based on the above-mentioned embodiments of the present application, the overflow plate is connected to the side plate so that the overflow plate and the frame are connected as a whole, thereby further improving the overall insulation protection effect of the bar body from the battery module to the frame. At the same time, the overflow plate and the side plate can be set as one piece, and can be integrally processed and formed by injection molding or other methods during the processing process, thereby improving processing efficiency. Furthermore, since the bar body needs to be fixed by bolts and other structures when connected and conducted, in order to avoid the connection end of the bar body from being too protruding, the connection end of the bar body is usually set as a downwardly bent structure, and by setting the overflow plate and the side plate at an angle, the connection bracket formed by the overflow plate and the frame can better adapt to and fit the bar body, thereby further improving the insulation protection effect.

[0017] In some embodiments, the junction between the overflow plate and the side plate is configured as a curved surface structure.

[0018] Based on the above-mentioned embodiments of the present application, by setting the intersection of the overflow plate and the side panel to a curved surface structure, the possibility of damage to the structure such as the bar body and the battery module can be reduced.

[0019] In some embodiments, the connecting bracket is configured as an insulating bracket.

[0020] Based on the above-mentioned embodiments of the present application, the insulation protection effect of the bar body is improved by setting the entire connecting bracket to an insulating material.

[0021] According to a second aspect of the present application, a battery pack is provided, which includes a battery cell module and the above-mentioned tab assembly, wherein the tab assembly is connected to the end of the battery cell module.

[0022] Based on the above-mentioned embodiments of the present application, the battery pack includes the above-mentioned bar assembly. Through the setting of the above-mentioned bar assembly, the structure between the bar body from the battery cell module to the connecting bracket can be insulated and protected, the creepage distance can be extended, the safety of the bar assembly can be improved, and the safety of the battery pack can be improved.

[0023] According to a third aspect of the present application, an electrical device is provided, which includes a housing and the above-mentioned battery pack, wherein the battery pack is disposed in the housing.

[0024] Based on the above embodiments of the present application, the electrical equipment provided in the present application includes the above battery pack, and therefore also has the above beneficial effects. In order to avoid repetition, they will not be described here.

[0025] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the following detailed description, they are used to explain the present application but do not constitute a limitation of the present application. In the accompanying drawings:

[0027] Figure 1 It is a schematic diagram of the structure of the battery pack provided in an embodiment of the present application.

[0028] Figure 2 yes Figure 1 Enlarged schematic diagram of part A.

[0029] Figure 3 It is a plan view of the battery pack provided in an embodiment of the present application.

[0030] Figure 4 yes Figure 3 Schematic diagram of the enlarged portion B.

[0031] Figure 5 This is another structural schematic diagram of the battery pack provided in an embodiment of the present application.

[0032] Figure 6 yes Figure 5 Enlarged schematic diagram of part C.

[0033] Figure 7 It is a structural schematic diagram of the bar body and the connecting bracket in the bar assembly provided in an embodiment of the present application.

[0034] Figure 8 It is a structural schematic diagram of the connecting bracket in the bar assembly provided in an embodiment of the present application.

[0035] Figure 9 It is a structural schematic diagram of the bar body and the thermal conductive adhesive layer in the bar assembly provided in an embodiment of the present application.

[0036] Figure 10 yes Figure 9 Enlarged schematic diagram of part D.

[0037] Description of Reference Numerals

[0038] 1. Bar body; 11. Sink groove; 2. Cold plate; 3. Insulation layer; 4. Thermal adhesive layer; 5. Glue blocking structure; 6. Connecting bracket; 61. Frame; 611. Bottom plate; 612. Side plate; 613. Connecting cavity; 62. Glue overflow plate; 63. Glue blocking wing wall; 64. Glue overflow groove; 65. Protective cover; 7. Mounting beam; 8. Battery cell module; 9. Plastic bottom plate. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0041] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without making any creative efforts shall fall within the scope of protection of the present application.

[0042] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0043] In the description of this application, it should be noted that, unless otherwise stated, the terms "inner" and "outer" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended solely to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" and the like are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0044] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0045] In the prior art, power battery packs require cooling plates to dissipate heat from the cell structure. The output terminals of the cell structures are connected to output tabs. During use, the output tabs require significant heat dissipation during continuous operation. Therefore, a harmonica tube structure is typically installed on the cooling plate at the corresponding position of the output tab to enhance heat dissipation. In actual use, the harmonica tube structure requires protective paint spraying, and an insulating structure, such as an insulating protective film, is also installed between the cooling plate and the output tab to ensure effective insulation between them.

[0046] However, to ensure strength and conductivity, some output bars are usually thicker. In this case, it is generally necessary to perform a sinking process on the welding surface between the output bar and the battery cell structure to ensure the thickness of the welding area. However, burrs are easily formed at the weld seam formed by the sinking area, and due to the structural reasons of the sinking area, the burrs are often difficult to grind off or cannot be completely ground off. When the cooling plate is docked and assembled, the burrs can easily pierce the insulating protective film, resulting in the risk of short circuit between the cooling plate and the output bar.

[0047] In order to solve the above technical problems, refer to Figures 1 to 6 As shown in the , an embodiment of the application provides a flap assembly comprising a flap body 1, an insulating layer 3, and a thermally conductive adhesive layer 4. A cold plate 2 is disposed on one side of the flap body 1 to dissipate heat from the flap body 1. The insulating layer 3 is disposed between the flap body 1 and the cold plate 2. The thermally conductive adhesive layer 4 is disposed between the flap body 1 and the insulating layer 3. Burrs may form on the flap body 1 during assembly. Some of these burrs are located on the side of the flap body 1 near the thermally conductive adhesive layer 4, which is completely covered by the thermally conductive adhesive layer 4.

[0048] Based on the above-mentioned embodiments of the present application, by providing a thermally conductive adhesive layer 4 between the blade body 1 and the insulating layer 3, the thermally conductive adhesive layer 4 can, on the one hand, isolate the blade body 1 from the insulating layer 3, preventing burrs formed on the blade body 1 after welding from damaging the insulating layer 3. On the other hand, the provision of the thermally conductive adhesive layer 4 can also fill the upper surface of the blade body 1 and conduct heat, ensuring sufficient heat dissipation area between the blade body 1 and the cold plate 2.

[0049] Furthermore, the provision of the thermal conductive adhesive layer 4 can also reduce the height difference problem caused by the structures such as the chip body 1 and the battery module 8 during the manufacturing and assembly process, ensure the consistency of the heat dissipation contact surface between the chip body 1 and the cold plate 2, and ensure the heat dissipation effect.

[0050] Specifically, in the present application, after the thermally conductive adhesive layer 4 is provided on the tab body 1 , the insulating layer 3 can be directly adhered to the thermally conductive adhesive layer 4 , thereby ensuring the insulation effect and facilitating the fixing of the insulating layer 3 .

[0051] In addition, it should be noted that the thermal conductive adhesive layer 4 referred to in this application completely covers the burrs, which not only means that the thermal conductive adhesive layer 4 completely covers the burrs in the horizontal projection direction, but also means that the thermal conductive adhesive layer 4 completely covers the burrs in the height direction to prevent the burrs from extending and piercing the insulating layer 3.

[0052] refer to Figure 7 and Figure 8 As shown in FIG, in some embodiments of the present application, a sink groove 11 is provided on the side of the bar body 1 facing the cold plate 2 , and the thermal conductive adhesive layer 4 covers the sink groove 11 .

[0053] Based on the above-mentioned embodiments of the present application, the provision of the sink groove 11 can ensure the thickness of the welding area when the battery body 1 is welded to the battery cell, thereby ensuring the stability of the connection and conduction between the two. Covering the sink groove 11 with the thermally conductive adhesive layer 4 can not only prevent burrs formed at the location of the sink groove 11 from damaging the insulating layer 3, but also fill the sink groove 11 to ensure sufficient heat dissipation area between the battery body 1 and the cold plate 2.

[0054] Specifically, when the tab body 1 is connected to the battery cell, the pole of the cell module 8 protrudes and is welded to the tab body 1. By setting the sinking groove 11, when the pole is welded to the tab body 1, the welded structure formed by welding is located in the sinking groove 11, thereby ensuring that the welded structure has sufficient thickness and the stability of the connection between the tab body 1 and the pole, and preventing the welded structure from protruding from the tab body 1 and affecting the assembly of structures such as the cold plate 2.

[0055] In addition, it should be noted that in the embodiments of the present application, reference is made to Figure 9 and Figure 10 As shown in the figure, a plastic base plate 9 can be provided between the tab body 1 and the battery cell. The plastic base plate 9 is provided with through holes for connection between the tab body 1 and the battery cell. At the same time, the plastic base plate 9 can also prevent the thermal conductive glue under the tab body 1 from flowing out and affecting the connection and conduction between other components.

[0056] Alternatively, in this application, the plastic base plate 9 can be configured as part of an integrated busbar (Cells Contact System, CCS), which contains a wiring harness and is wrapped with plastic or other insulating material. The integrated busbar is connected to the battery module 8 to achieve battery monitoring and control.

[0057] Further, refer to Figure 5 and Figure 6As shown in FIG, in some embodiments provided in the present application, a glue blocking structure 5 is provided on the side of the tab body 1. By providing the glue blocking structure 5 on both sides of the tab body 1, and the glue blocking structure 5 is provided on the plastic bottom plate 9, the thermal conductive glue under the tab body 1 can be prevented from flowing out to both sides.

[0058] Specifically, in the present application, the adhesive blocking structure 5 can be configured in any suitable manner. In an exemplary embodiment provided herein, the adhesive blocking structure 5 is configured as an insulating foam. The insulating foam is disposed on the side of the tab body 1 with a certain gap between the tab body 1 and the insulating foam. This allows for a certain amount of space for the thermal conductive adhesive to flow, thereby preventing excessive adhesive injection in certain areas from affecting the assembly height of the tab body 1, while also preventing the thermal conductive adhesive from flowing further outward.

[0059] At the same time, the insulating foam can be provided on both sides of the tab body 1 to prevent the thermal adhesive from flowing to both sides of the tab body 1. Alternatively, when the tab body 1 is provided close to the edge of the side of the plastic base plate 9, since the plastic base plate 9 itself has a glue blocking effect at the edge, the tab body 1 can be provided with insulating foam only on the side away from the side edge of the plastic base plate 9. The specific setting can be based on the actual position of the tab body 1 on the plastic base plate 9.

[0060] In addition, in some other embodiments of the present application, the glue blocking structure 5 can also be set as a glue blocking plate, which is set on the side of the tab body 1 to block the thermal conductive glue from flowing to the side.

[0061] Alternatively, in some other embodiments of the present application, the glue-blocking structure 5 can also be set as a glue-blocking ridge, etc., and a suitable setting method can be selected according to the processing technology, etc., and the present application does not impose any specific restrictions on this.

[0062] refer to Figure 7 and Figure 8 As shown in , in some embodiments of the present application, the tab assembly further includes a connecting bracket 6, which is disposed on the mounting beam 7 on the side of the battery module 8. The connecting bracket 6 includes a frame body 61 and a glue overflow plate 62, wherein the frame body 61 includes a bottom plate 611 and at least two side plates 612. The side plates 612 and the bottom plate 611 together form a connecting cavity 613 with at least one side opening. The tab body 1 extends from the battery module 8 into the connecting cavity 613. A glue overflow plate 62 is provided on one side of the frame body 61. The glue overflow plate 62 is connected to the frame body 61 and extends toward the battery module 8. The glue overflow plate 62 is located between the battery module 8 and the tab body 1.

[0063] Based on the above-mentioned embodiment of the present application, by providing a connecting bracket 6, wherein the connecting cavity 613 enclosed in the frame 61 serves as the connecting position of the tab body 1, the tab body 1 extends into the connecting cavity 613 for connection and conduction. By providing a glue overflow plate 62, the glue overflow plate 62 is located between the tab body 1 and the battery module 8, and is formed on the path from the battery module 8 to the frame 61, so that the entire path of the tab body 1 from the connection end with the battery module 8 to the connecting cavity 613 is protected by the frame 61 and the glue overflow plate 62. On the one hand, the tab body 1 is insulated and protected, and on the other hand, the thermal conductive glue provided at the tab body 1 is prevented from overflowing and flowing, affecting the connection and conduction between other structures.

[0064] Specifically, in the prior art, a high-voltage bracket is provided between the cell modules 8 or at one end of the cell module 8 in the battery pack. The high-voltage bracket is mounted on a crossbeam or a longitudinal beam. When adjacent cell modules 8 are connected or the cell module 8 is connected outward, the tabs at the output end of the cell module 8 extend into the high-voltage bracket for connection. However, due to the certain distance between the output end of the cell module 8 and the high-voltage bracket, the bottom plate of the integrated busbar (Cells Contact System, CCS) assembly cannot be fully covered, which may cause the thermal conductive adhesive coated on the tab area to flow into the bottom cell module 8, and the insulation effect around the tab cannot be guaranteed.

[0065] Through the setting of the above-mentioned embodiments of the present application, the frame 61 set in the present application can achieve the same or similar technical effects as the high-voltage bracket in the prior art, and through the setting of the overflow plate 62, the overflow plate 62 protects the extension path of the bar body 1 between the output end of the battery cell module 8 and the frame 61, expands the insulation protection area, and blocks the overflow of glue while achieving insulation protection.

[0066] Furthermore, in the present application, the structure of the frame 61 can be configured in any suitable manner. Figure 8 As shown in , in an exemplary embodiment provided in the present application, the frame 61 may include a bottom plate 611 and three side plates 612. The three side plates 612 are respectively connected to the three sides of the bottom plate 611 and are perpendicular to the bottom plate 611. The three side plates 612 and the bottom plate 611 together form a connecting cavity 613 with side openings and top openings. At this time, the bottom plate 611 and the three side plates 612 together form a chair-like structure, and the bar body 1 and other connecting structures extend from the opening into the connecting cavity 613 for connection and conduction.

[0067] Alternatively, in some other embodiments of the present application, the frame 61 may also include a bottom plate 611 and four side plates 612. In this case, the side plates 612 and the bottom plate 611 together form a connecting cavity 613 with a top opening for accommodating the connecting end of the bar body 1.

[0068] In addition, reference Figure 7 As shown in , in some embodiments provided in the present application, a protective cover 65 may be further provided on the frame 61. The protective cover 65 may be connected to the frame 61 by various connection methods including buckling. At the same time, the protective cover 65 is buckled into the opening of the frame 61, and a gap is provided between the protective cover 65 and the frame 61 to allow the tab body 1 to extend into the connecting cavity 613.

[0069] Furthermore, it should be noted that, in the present application, the tab body 1 is primarily connected to structures such as a connecting bar within the frame 61. The connecting bar is disposed between two groups of battery modules 8 for connection and conduction, i.e., both ends of the connecting bar are connected to the tab body 1 extending from the two groups of battery modules 8. In other embodiments, the tab body 1 may also be connected to other structures, in which case the structure of the connecting bracket 6 can be adaptively adjusted to meet the insulation protection requirements of different structures.

[0070] refer to Figure 7 and Figure 8 As shown in , in an embodiment provided in the present application, glue-blocking wing walls 63 are provided on both sides of the glue-overflow plate 62 , and the glue-overflow plate 62 and the glue-blocking wing walls 63 together form a glue-overflow groove 64 , and the tab body 1 is at least partially located in the glue-overflow groove 64 .

[0071] Based on the above-mentioned embodiments of the present application, the glue overflow groove 64 is formed by the glue blocking wing wall 63 and the glue overflow plate 62. The cross-section of the glue overflow groove 64 can be set to a U-shaped structure. The setting of the glue blocking wing wall 63 can not only further extend the creepage distance from the bar body 1 to the mounting beam 7, but also prevent the thermal conductive glue layer 4 on the bar body 1 from overflowing to both sides when it melts.

[0072] Specifically, during the processing and assembly process, the shape of the rubber retaining wing wall 63 can be adapted to the extension direction of the flap body 1. For example, Figure 8 As shown in , in an exemplary embodiment provided in the present application, a partial bending structure can be provided in the middle of the flap body 1. At this time, the glue overflow plate 62 and the glue blocking wing wall 63 are correspondingly set as bending structures to achieve insulation protection for the flap body 1 and prevent glue overflow.

[0073] Furthermore, in the present application, a gap may be provided between the adhesive retaining wing 63 and the edge of the tab body 1, which can provide a certain amount of accommodation space when the thermal adhesive flows out. The specific width of the gap can be set according to the thickness of the thermal adhesive layer 4, etc.

[0074] At the same time, in the present application, the height of the adhesive retaining wing wall 63 and other data can also be appropriately set according to the thickness of the thermal conductive adhesive layer 4 and the thickness of the blade body 1 itself.

[0075] Further, refer to Figure 8 In some embodiments provided in the present application, the glue overflow plate 62 is connected to one of the side plates 612 , and the glue overflow plate 62 and the side plate 612 are arranged at an angle.

[0076] Based on the above-mentioned embodiments of the present application, the overflow plate 62 is connected to the side plate 612 so that the overflow plate 62 and the frame 61 are connected as a whole, thereby further improving the overall insulation protection effect of the bar body 1 from the battery module 8 to the frame 61.

[0077] Furthermore, since the tab body 1 needs to be fixed by bolts or other structures when connected, in order to avoid the connection end of the tab body 1 from protruding too much, the connection end of the tab body 1 is usually set to a downward-bent structure. By setting the overflow plate 62 and the side plate 612 at an angle, the connecting bracket 6 formed by the overflow plate 62 and the frame 61 can better adapt to and fit the tab body 1, so as to further improve the insulation protection effect.

[0078] At the same time, at the end position of the battery cell module 8, the distance between the connection position between the tab body 1 and the battery cell module 8 and the frame 61 is long. At this time, the tab body 1 also needs to be bent downward to extend to the frame 61. In this case, setting the overflow plate 62 and the side panel 612 at an angle can also enable the connecting bracket 6 and the tab body 1 to fit better, thereby better insulating and protecting the tab body 1.

[0079] In the present application, any suitable connection method can be selected between the overflow plate 62 and the side plate 612. For example, the overflow plate 62 and the side plate 612 can be integrated. In specific production, a variety of processing methods including injection molding can be used to achieve integrated processing and molding of the two. Through the integrated processing method, the intersection of the overflow plate 62 and the side plate 612 is stronger and the overall insulation performance is better. Alternatively, the overflow plate 62 and the side plate 612 can be processed and molded separately and then fixed by gluing or other methods.

[0080] Furthermore, in some embodiments provided herein, a curved surface structure is provided at the junction of the overflow plate 62 and the side plate 612. This curved surface structure facilitates the fixation of the tab body 1 and the connecting bracket 6 at the connection location of the overflow plate 62 and the bracket 61, while also preventing damage to the tab body 1.

[0081] In addition, it should be noted that in this application, the material of the connecting bracket 6 can be any suitable material as long as it meets the insulation requirements. When the frame 61 and the overflow plate 62 are integrated, they are configured to be made of the same material, such as resin or plastic. However, when the frame 61 and the overflow plate 62 are processed separately and fixedly connected, they can be made of different insulating materials.

[0082] On the basis of the above technical solution, according to the second aspect of the present application, a battery pack is also provided, which includes a battery cell module 8 and the above-mentioned tab assembly, and the tab assembly is connected to the end of the battery cell module 8.

[0083] Based on the above-mentioned embodiments of the present application, the battery pack provided by the present application includes the above-mentioned tab assembly. Through the setting of the above-mentioned tab assembly, the structure between the tab body 1 from the battery cell module 8 to the connecting bracket 6 can be insulated and protected, the creepage distance can be extended, and the effect of preventing glue overflow can be achieved at the same time, thereby making the overall insulation performance and stability of the battery pack better.

[0084] In addition, it should be noted that the battery pack in this application may also include other components, such as a frame and a bottom guard plate, etc., and any appropriate setting method can be selected according to the actual application conditions of the battery pack, and this application does not impose specific restrictions on this.

[0085] On the basis of the above technical solution, according to the third aspect of the present application, an electrical device is further provided, which includes a housing and the above-mentioned battery pack, and the battery pack is arranged in the housing.

[0086] Based on the above embodiments of the present application, the electrical equipment provided by the present application also has the above technical effects. In order to avoid repetition, they will not be described here.

[0087] It should be noted that the electrical devices in this application may include, but are not limited to, mobile phones, tablets, laptop computers, electric toys, electric tools, battery-powered vehicles, electric cars, ships, spacecraft, etc. Among them, electric toys may include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft may include airplanes, rockets, space shuttles, and spacecraft, etc.

[0088] The preferred embodiments of the present application are described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, various simple modifications can be made to the technical solution of the present application, and these simple modifications all fall within the scope of protection of the present application.

[0089] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner unless there is any contradiction. In order to avoid unnecessary repetition, this application will not further describe various possible combinations.

[0090] In addition, the various implementation methods of the present application may be arbitrarily combined, and as long as they do not violate the concept of the present application, they should also be regarded as the contents disclosed in the present application.

Claims

1. A bar assembly, characterized in that: The bar assembly includes: A blade body, with a cold plate provided on one side of the blade body for dissipating heat from the blade body; an insulating layer, the insulating layer being disposed between the bar body and the cold plate; A thermally conductive adhesive layer, disposed between the tab body and the insulating layer; Burrs may be formed on the tab body during the assembly process, and part of the burrs are located on a side of the tab body close to the thermal conductive adhesive layer, while the thermal conductive adhesive layer completely covers the burrs.

2. The bar assembly according to claim 1, characterized in that: A sinking groove is provided on one side of the bar body facing the cold plate, and the thermal conductive adhesive layer covers the sinking groove.

3. The bar assembly according to claim 1, characterized in that: Glue-blocking structures are provided on both sides of the bar body, and the glue-blocking structures are configured as one of insulating foam, glue-blocking plates, and glue-blocking ridges.

4. The bar assembly according to claim 1, characterized in that: The bar assembly further includes a connecting bracket, which is arranged on a mounting beam on the side of the battery cell module, and includes: A frame, the frame comprising a bottom plate and at least two side plates, the side plates and the bottom plate together forming a connection cavity with at least one side open, the tab body extending from the battery cell module into the connection cavity; A glue overflow plate is provided on one side of the frame, the glue overflow plate is connected to the frame and extends toward the direction of the battery module, and the glue overflow plate is located between the battery module and the bar body.

5. The bar assembly according to claim 4, characterized in that: Glue-blocking wing walls are provided on both sides of the glue-overflow plate, and the glue-overflow plate and the glue-blocking wing walls together form a glue-overflow groove, and the flap body is at least partially located in the glue-overflow groove.

6. The bar assembly according to claim 4, characterized in that: The overflow glue plate is connected to one of the side plates, and the overflow glue plate and the side plate are arranged at an angle.

7. The bar assembly according to claim 6, characterized in that: The intersection of the overflow plate and the side plate is set as a curved surface structure.

8. The bar assembly according to claim 4, characterized in that: The connecting bracket is configured as an insulating bracket.

9. A battery pack, characterized in that: The battery pack includes: Battery cell modules; and The bar assembly as described in any one of claims 1-8, wherein the bar assembly is arranged at the end of the battery cell module.

10. An electrical device, characterized in that: The electrical equipment includes: a housing; and The battery pack according to claim 9, wherein the battery pack is disposed within the housing.

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