Partition plate assembly, battery module, battery pack, electrical device

Abstract

The partition plate assembly, battery module, battery pack, and electrical device include: a partition plate (31) provided with a plurality of bus bar mounting positions; bus bars (32) mounted at the bus bar mounting positions; an output electrode (33) including a first fixing portion (331) and a second fixing portion (332), with the first fixing portion (331) electrically connected to at least one of the bus bars (32); and an insulating plate (34) including a first connecting portion (34a) connected to the partition plate (31) and a second connecting portion (34b) connected to the second fixing portion (332). Figure 4

Description

Technical Field

[0001] Cross - reference to Related Applications This application claims priority to Chinese Patent Application No. 202222868612.5, filed on October 31, 2022, with the title of the invention "Partition Plate Assembly, Battery Module, Battery Pack, Electrical Device", and all the contents of this application are incorporated herein by reference.

[0002] Technical Field This application relates to the technical field of batteries, specifically to partition plate assemblies, battery modules, battery packs, and electrical devices.

Background Art

[0003] The output poles of a battery module or a battery pack do not have a constant distance from the cell assembly. When the distance becomes longer, the output poles become excessively long and are likely to break and become invalid during transportation and locking.

Summary of the Invention

[0004] In view of the above problems, this application provides a partition plate assembly, a battery module, a battery pack, and an electrical device that can more stably connect the output poles and prevent the occurrence of problems such as the output poles breaking and becoming invalid.

[0005] In a first aspect, this application provides a partition plate provided with a plurality of busbar mounting positions, busbars mounted at each busbar mounting position, an output pole including a first fixing part and a second fixing part, wherein the first fixing part is electrically connected to at least one busbar, an insulating plate including a first connecting part connected to the partition plate and a second connecting part connected to the second fixing part, and provides a partition plate assembly comprising the above.

[0006] In the technical solution of the embodiment of this application, the insulating plate is connected to the output electrode, the partition plate is connected to the insulating plate, and the output electrode is electrically connected to the busbar, thereby reinforcing the fixing of the output electrode and effectively preventing the problem of the output electrode breaking and becoming inoperable during transport and locking.

[0007] In some embodiments, the second connecting portion is bonded to the second fixing portion, and an adhesive layer is provided between them.

[0008] This allows for a more robust connection of the output electrode to the insulating plate, preventing the problem of the output electrode cracking and becoming inoperable due to high torque generated during transport and locking.

[0009] In some embodiments, the partition plate is First insulating plate body, The device comprises a first insulating plate and a second insulating plate laminated thereon, with a busbar provided between the first insulating plate and the second insulating plate, and a first connection portion located between the first insulating plate and the second insulating plate.

[0010] This allows the first insulating plate and the second insulating plate to sandwich the first connecting portion between them, thereby achieving a stronger connection.

[0011] In some embodiments, the first connection is connected to a first insulating plate and / or the first connection is connected to a second insulating plate.

[0012] This further improves the reliability of the connection between the insulating plate and the partition plate.

[0013] In some embodiments, at least one of the multiple busbars presses the first connection portion against the first insulating plate or the second insulating plate.

[0014] This allows the insulating plate to be fixed more securely.

[0015] In some embodiments, the second fixing portion has a plate-like structure, and the second fixing portion is provided above the second connecting portion in the lateral direction.

[0016] This reduces the volume along the thickness direction of the output terminal partition plate, making the battery module or battery pack more compact.

[0017] In some embodiments, an adhesive storage tank is provided on the upper surface of the partition plate, the adhesive storage tank is located at the bottom of the output electrode, and the adhesive storage tank is arranged to bond the bottom of the output electrode to the insulating plate by storing adhesive.

[0018] By injecting adhesive into the adhesive storage tank, once it is filled with adhesive, it becomes possible to bond and fix the second fixing part and the second connection part of the output electrode, resulting in a more secure fixation of the second fixing part of the output electrode.

[0019] In some embodiments, the insulating plate is provided with through-holes for injecting adhesive in the thickness direction of the partition plate, and the adhesive injection holes are arranged to deliver adhesive to the top of the battery cell, thereby bonding and fixing the bottom of the insulating plate to the top of the battery cell.

[0020] Since the adhesive injection hole penetrates the insulating plate, adhesive can be injected into the injection hole from the top of the insulating plate, enabling adhesive injection after the partition plate assembly is installed and facilitating installation.

[0021] In some embodiments, an adhesive injection tank is provided on the upper surface of the insulating plate, and in the thickness direction of the partition plate, the bottom of the adhesive injection tank is shallower than the bottom of the adhesive storage tank, and an adhesive discharge port is provided in the adhesive injection tank, which communicates with the adhesive storage tank and is used to discharge the adhesive into the adhesive storage tank.

[0022] Since the bottom of the adhesive injection groove is shallower than the bottom of the adhesive storage groove, when injecting the adhesive into the adhesive injection groove, the adhesive flows into the adhesive storage groove under the action of its own gravity, enabling an insulating adhesive fixation between the bottom of the output pole and the insulating plate. By providing the adhesive injection groove, the injection of the adhesive becomes easier, eliminating the need to apply the adhesive to the partition plate and the insulating plate and attach them integrally, thus simplifying the assembly process.

[0023] In some embodiments, the adhesive injection hole is located within the adhesive injection groove.

[0024] By injecting the adhesive into the adhesive injection hole or the adhesive injection groove, or injecting the adhesive into both the adhesive injection hole and the adhesive injection groove, the adhesive fixation between the insulating plate and the battery cell and between the insulating plate and the output pole can be achieved, making the operation simpler and more convenient.

[0025] In some embodiments, a reinforcing rib is provided in the adhesive injection hole.

[0026] This enables the connection between the adhesive and the insulating plate and enhances the strength of the insulating plate.

[0027] In some embodiments, an adhesive injection observation window is provided on the insulating plate, and the adhesive injection observation window penetrates the insulating plate in the thickness direction of the insulating plate.

[0028] This allows the adhesive injection observation window to determine whether the amount of adhesive flowing from the adhesive injection hole to the battery cell is excessive.

[0029] In a second aspect, the present application provides at least one battery cell, and a partition plate assembly described in the first aspect located at the top of the battery cell, and provides a battery module in which the battery cell is connected to an insulating plate.

[0030] The battery module of the present application includes the technical features of the partition plate assembly described in the first aspect, and its effects are the same as those described above, and will not be repeated here.

[0031] In some embodiments, the top of the battery cell is glued and fixed to the bottom of the insulating plate.

[0032] This makes the insulating plate more robust, further secures the second fixing part of the output electrode more reliably, and prevents the problem of the output electrode cracking and becoming inoperable during transport and locking.

[0033] In a third embodiment, the present application provides a battery pack comprising the above-mentioned battery module.

[0034] The battery pack of this application includes the technical features of the partition plate assembly described in the first embodiment, and its effects are the same as those described above, and will not be repeated here.

[0035] In a fourth aspect, the present application provides an electrical device comprising a battery module as described in the second aspect, wherein the battery module is used to provide electrical energy, or comprising a battery pack as described in the third aspect, wherein the battery pack is used to provide electrical energy.

[0036] In the technical solution of the embodiment of this application, the electrical device includes the technical features of a partition plate assembly, and its technical effects are the same as those described above, and will not be described again here.

[0037] The above description is merely a general overview of the technical solution of this application. In order to more clearly understand the technical means of this application and to implement them based on the contents of the specification, and to make the above and other objectives, features, and benefits of this application easier to understand, specific embodiments of this application are given below. [Brief explanation of the drawing]

[0038] By reviewing the detailed description of the preferred embodiments below, various other merits and benefits will become obvious to those skilled in the art. The drawings are for illustrative purposes only and should not be construed as limiting this application. Throughout the drawings, the same reference numerals indicate the same components. The description of the drawings is as follows.

[0039] [Figure 1] This is a schematic diagram of the structure of an electrical device in a vehicle according to some embodiments of this application. [Figure 2] This is a schematic diagram of the exploded structure of a battery pack according to some embodiments of this application. [Figure 3] This is a schematic diagram of the exploded structure of a battery cell according to some embodiments of this application. [Figure 4] This is a schematic diagram of a partially disassembled structure of a battery pack according to some embodiments of this application, in which the first insulating plate is omitted in the figure. [Figure 5] This is a partially schematic diagram of a battery pack according to some embodiments of this application. [Figure 6] This is an axial projection view of the insulating plate of a partition plate assembly according to some embodiments of this application. [Figure 7] This is a partial cross-sectional view of the insulating plate of a partition plate assembly according to some embodiments of this application. [Modes for carrying out the invention]

[0040] The following describes in detail embodiments of the technical proposal of this application with reference to the drawings. The following embodiments are merely examples, intended to clarify the technical proposal of this application, and should not limit the scope of protection of this application.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which this application pertains. The terms used herein are solely for the purpose of describing specific embodiments and are not intended to limit this application. Terms such as “includes” and “composes,” and any variations thereof, in the description, claims, and brief description of the drawings above, are intended to cover non-exclusive inclusion.

[0042] In the descriptions of the embodiments of this application, technical terms such as "first," "second," etc., are merely used to distinguish different subjects and should not be understood as indicating or implying relative importance, or implicitly indicating the number of technical features shown, a specific order, or a primary-secondary relationship. In the descriptions of the embodiments of this application, unless otherwise clearly and specifically limited, "multiple" means two or more.

[0043] Where the “Examples” are described herein, it means that certain features, structures, or properties described in association with the Examples may be included in at least one Example of this Application. The wording appearing elsewhere in the Specification does not necessarily refer to the same Example, nor does it mean that an Example is exclusively independent or alternative to another. It will be explicitly or implicitly understood by those skilled in the art that the Examples described herein may be combined with other Examples.

[0044] In the description of the embodiments of this application, the term "and / or" is merely used to describe the relationship between related objects, and means that there may be three types of relationships. For example, A and / or B can mean that A exists alone, that A and B exist simultaneously, or that B exists alone. In addition, the symbol " / " in this specification generally means that the preceding and following related objects are in an "or" relationship.

[0045] 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 sets (including two sets), and "multiple sheets" refers to two or more sheets (including two sheets).

[0046] In the description of the embodiments of this application, the directions or positional relationships indicated by technical terms such as "center," "vertical direction," "horizontal direction," "length," "width," "thickness," "top," "bottom," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," "clockwise," "counterclockwise," "axial direction," "radial direction," and "circumferential direction" are directions or positional relationships shown based on the drawings, and are merely for the purpose of simplifying the description and making it easier to explain the embodiments of this application. They do not explicitly or implicitly suggest that the indicated device or element necessarily has a specific direction, or is composed and operated in a specific direction, and should not be understood as limiting the embodiments of this application.

[0047] In the descriptions of the embodiments of this application, unless otherwise explicitly specified or limited, technical terms such as "attach," "connect," "join," and "fix" should be understood in a broad sense. For example, they may refer to fixed connections, removable connections, or integrated connections. They may also refer to mechanical or electrical connections. Furthermore, they may refer to direct connections, indirect connections via an intermediate mediator, internal communication between two elements, or interaction relationships between two elements. Those skilled in the art will be able to understand the specific meaning of the above terms in the embodiments of this application depending on the specific circumstances.

[0048] The applicant noticed that after the output terminals of a battery module or battery pack are electrically connected to the output busbar, a portion of them protrudes to form a cantilever structure. During transport and locking, the cantilever is far from the connection point between the output terminals and the output busbar and is subjected to large forces, making the output terminals prone to cracking and becoming inoperable during transport and locking.

[0049] To solve the above problem, the applicant conducted research and found that an insulating plate could be provided between the second fixing part 332 of the output electrode and the partition plate 31, and that by fixing the second fixing part 332 of the output electrode and the partition plate 31 to the insulating plate, the output electrode could be strengthened, thus avoiding the problem of the output electrode being prone to cracking and becoming inoperable during transport and locking.

[0050] Embodiments of this application provide an electrical device comprising a battery cell, a battery module, or a battery pack, the battery module, battery cell, or battery pack providing electrical energy to the electrical device. The electrical device may be, but is not limited to, a mobile phone, tablet, laptop computer, electric toy, power tool, battery car, electric vehicle, ship, aircraft, etc. Here, electric toys may include stationary or mobile electric toys, such as game consoles, electric vehicle toys, electric boat toys, and electric airplane toys, and aircraft may include airplanes, rockets, space shuttles, and spacecraft, etc.

[0051] In the following embodiments, for the sake of clarity, the electrical device of some embodiments of this application will be described as a vehicle 1000.

[0052] Refer to Figure 1, a schematic diagram of the structure of a vehicle 1000 provided in some embodiments of this application. The vehicle 1000 may be a fuel cell vehicle, a natural gas vehicle, or a new energy vehicle. The new energy vehicle may be a pure electric vehicle, a hybrid vehicle, or a range extender vehicle, etc. A battery pack 100 is provided inside the vehicle 1000, and the battery pack 100 can be installed at the bottom, front, or rear of the vehicle 1000. The battery pack 100 can be used to supply power to the vehicle 1000, for example, the battery pack 100 can be the operating power source for the vehicle 1000. The vehicle 1000 may further include a controller 200 and a motor 300, the controller 200 for controlling the battery pack 100 to supply power to the motor 300, for example, to meet the operating power requirements for starting, navigation, and driving the vehicle 1000.

[0053] In some embodiments of this application, the battery pack 100 can not only serve as the operating power source for the vehicle 1000, but can also serve as the driving power source for the vehicle 1000, providing driving power to the vehicle 1000 by substituting or partially substituting fuel oil or natural gas.

[0054] Refer to Figure 2, a schematic diagram of the exploded structure of a battery pack 100 provided in some embodiments of this application. The battery pack 100 comprises a battery pack housing 10 and at least one battery cell 20 housed in the battery pack housing 10. Here, the battery pack housing 10 is for providing a housing space for the battery cell 20 and can employ various structures. In some embodiments, the battery pack housing 10 may comprise a box 11 and a top lid 12 that, when stacked, together define a housing space for housing the battery cell 20. The top lid 12 may have a hollow structure with an inlet at one end, and the box 11 may have a plate-like structure, with the box 11 stacked on the inlet side of the top lid 12 to define the housing space. Alternatively, the box 11 and the top lid 12 may both have hollow structures with an inlet at one end, with the inlet side of the box 11 stacked on the inlet side of the top lid 12. Of course, the battery pack housing 10, formed by the box 11 and the top cover 12, may have various shapes, such as a T-shape or a rectangular parallelepiped.

[0055] In the battery pack 100, there may be multiple battery cells 20, and the multiple battery cells 20 may be connected in series, in parallel, or in a mixed connection. A mixed connection means that among the multiple battery cells 20, there are both those connected in series and those connected in parallel. The multiple battery cells 20 may be directly connected in series, in parallel, or in a mixed connection, and then the integrated multiple battery cells 20 may be housed in the box 11. Of course, the battery pack 100 may also be formed by first connecting multiple battery cells 20 in series, in parallel, or in a mixed connection to form a battery module, and then further integrating the multiple battery modules by connecting them in series, in parallel, or in a mixed connection and housing them in the box 11. The battery pack 100 may further have other structures; for example, the battery pack 100 may further include a current collector for realizing electrical connections between the multiple battery cells 20.

[0056] Here, each battery cell 20 may be a secondary battery or a primary battery, and may be, but is not limited to, a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery. The battery cell 20 may be cylindrical, flattened, rectangular, or have other shapes.

[0057] Refer to Figure 3, which is a schematic diagram of the exploded structure of a battery cell 20 provided in some embodiments of this application. A battery cell 20 refers to the smallest constituent unit of a battery pack. The battery cell 20 comprises a top cover assembly 21, a housing 22, an electrode assembly 23, and other functional members.

[0058] The top cover assembly 21 refers to a component that is placed over the inlet of the housing 22 and isolates the internal environment of the battery cell 20 from the external environment. The shape of the top cover assembly 21 may be, but is not limited to, a shape that matches the shape of the housing 22. Selectively, the top cover assembly 21 may be made of a material (e.g., aluminum alloy) that has a certain degree of hardness and strength so as not to deform when pressed or impacted. This allows the battery cell 20 to have higher structural strength and can improve safety performance to some extent. Functional components such as electrode terminals 21a may be provided on the top cover assembly 21. The electrode terminals 21a can be electrically connected to the electrode assembly 23 to output or input electrical energy from the battery cell 20. In some embodiments, the top cover assembly 21 may further be provided with a pressure release mechanism to release internal pressure when the internal pressure or temperature of the battery cell 20 reaches a threshold. The top cover assembly 21 may be made of various materials such as copper, iron, aluminum, stainless steel, aluminum alloy, or plastic, but the embodiments of this application are not particularly limited thereto. In some embodiments, an insulating member may be further provided inside the top cover assembly 21 to isolate the top cover assembly 21 from the electrical connection members in the housing 22 and reduce the risk of short circuits. For example, the insulating member may be made of plastic, rubber, or the like.

[0059] The housing 22, together with the top cover assembly 21, is a component for forming the internal environment of the battery cell 20, and the internal environment formed by them can accommodate the electrode assembly 23, electrolyte, and other components. The housing 22 and the top cover assembly 21 may be independent components, and the housing 22 may be provided with an inlet, and the internal environment of the battery cell 20 may be formed by overlapping the top cover assembly 21 onto the inlet. Alternatively, the top cover assembly 21 and the housing 22 may be integrated, but are not limited to this. Specifically, a common connection surface may be formed between the top cover assembly 21 and the housing 22 before sealing other components, and the top cover assembly 21 may be overlapped onto the housing 22 if it is necessary to seal the inside of the housing 22. The housing 22 may be of various shapes and sizes, such as a rectangular parallelepiped, cylindrical shape, or hexagonal prism shape. Specifically, the shape of the housing 22 may be determined according to the specific shape and size of the electrode assembly 23. The housing 22 may be made of various materials such as copper, iron, aluminum, stainless steel, aluminum alloy, or plastic, but the embodiments of this application are not particularly limited thereto.

[0060] The electrode assembly 23 is a component that undergoes an electrochemical reaction in the battery cell 20. The housing 22 may contain one or more electrode assemblies 23. The electrode assembly 23 is mainly formed by winding or laminating a positive electrode sheet and a negative electrode sheet, and generally a separator is provided between the positive electrode sheet and the negative electrode sheet. The portions of the positive electrode sheet and the negative electrode sheet that have active material constitute the main body of the electrode assembly, and the portions of the positive electrode sheet and the negative electrode sheet that do not have active material each constitute a tab. The positive electrode tab 23a and the negative electrode tab 23b may be located at the same end of the main body, or they may be located at opposite ends of the main body. During the charging and discharging process of the battery, the positive electrode active material and the negative electrode active material react with the electrolyte, and the tabs are connected to the electrode terminals to form an electric current circuit.

[0061] In the following embodiments, for the sake of clarity, a partition plate assembly of some embodiments of this application will be described as an example.

[0062] Referring to Figures 4 to 6, the partition plate assembly comprises a partition plate 31, bus bars 32, output poles 33, and an insulating plate 34. Here, the partition plate 31 is provided with multiple bus bar mounting positions. Bus bars 32 are mounted at the bus bar mounting positions. The output pole 33 comprises a first fixing part 331 and a second fixing part 332, with the first fixing part 331 being electrically connected to at least one bus bar 32. The insulating plate 34 includes a first connecting part 34a connected to the partition plate 31 and a second connecting part 34b connected to the second fixing part 332.

[0063] The partition plate 31 may be a plate made of an insulating material, and more specifically, it may be an insulating plastic plate.

[0064] The first fixing part 331 and the second fixing part 332 refer to different mounting positions for the output pole 33.

[0065] The first connection portion 34a and the second connection portion 34b of the insulating plate 34 refer to different locations on the insulating plate 34.

[0066] The insulating plate 34 is connected to the output pole 33, the partition plate 31 is connected to the insulating plate 34, and the output pole 33 is electrically connected to the busbar 32. This reinforces the fixing of the output pole 33 and effectively prevents the problem of the output pole 33 breaking and becoming inoperable during transport and locking.

[0067] In some embodiments, referring to Figures 5 and 6, the second connecting portion 34b is bonded to the second fixing portion 332, and an adhesive layer is provided between them.

[0068] This allows the second fixing portion 332 of the output pole 33 to be more firmly connected to the insulating plate 34, thereby preventing the problem of the output pole 33 cracking and becoming inoperable due to the generation of large torque during transport and locking.

[0069] In some embodiments, referring to Figures 4 and 6, a stylus structure is used because the first insulating plate 311 in Figure 5 is thin, and the external shape of the stylus structure is similar to or the same as the busbar 32. The partition plate 31 comprises a first insulating plate 311 and a second insulating plate 312. The second insulating plate 312 is laminated with the first insulating plate 311, the busbar 32 is provided between the first insulating plate 311 and the second insulating plate 312, and the first connection portion 34a is located between the first insulating plate 311 and the second insulating plate 312.

[0070] The lamination of the second insulating plate 312 and the first insulating plate 311 may be welded together as a single unit by hot melt adhesive, or fixed together as a single unit by means of screws, rivets, etc., and is not specifically limited thereto.

[0071] As a result, the first insulating plate 311 and the second insulating plate 312 can sandwich the first connecting portion 34a between them, thereby achieving a stronger connection.

[0072] In some embodiments, the first connection portion 34a is connected to the first insulating plate 311 and / or the first connection portion 34a is connected to the second insulating plate 312.

[0073] The statement that the first connecting portion 34a is connected to the first insulating plate 311 means that the first connecting portion 34a is immovable relative to the first insulating plate 311. The fixing connection means may be screw connection, riveting, hot melt welding, integral injection molding, etc., but is not limited to these. That is, the first connecting portion 34a and the first insulating plate 311 may be connected in a removable manner or in a non-removable manner.

[0074] The statement that the first connecting portion 34a is connected to the second insulating plate 312 means that the first connecting portion 34a is immovable relative to the second insulating plate 312. The fixing connection means may be screw connection, riveting, hot melt welding, integral injection molding, etc., but is not limited to these. That is, the first connecting portion 34a and the second insulating plate 312 may be connected in a removable manner or in a non-removable manner.

[0075] This further improves the reliability of the connection between the insulating plate 34 and the partition plate 31.

[0076] In some embodiments, referring to Figure 4, at least one of the multiple busbars 32 presses the first connection portion 34a against the first insulating plate 311 or the second insulating plate 312.

[0077] The first connection portion 34a is pressed against the first insulating plate 311 or the second insulating plate 312, and the busbar 32 may be one, two, or more.

[0078] This allows the insulating plate 34 to be fixed more securely.

[0079] In some embodiments, the second fixing portion 332 has a plate-like structure, and the second fixing portion 332 is provided laterally above the second connecting portion 34b.

[0080] The lateral direction may be any direction perpendicular to the thickness direction of the partition plate 31, or it may form an angle of approximately 90° with respect to the thickness direction of the partition plate 31. For example, the lateral direction may form an angle of any value within the range of 75°-90° with respect to the thickness direction of the partition plate 31, and this is not specifically limited here.

[0081] The second fixing portion 332 is provided above the second connecting portion 34b in the lateral direction, that is, they are stacked on top of each other, which reduces the space occupied by the output pole 33 in the thickness direction A of the partition plate 31, making the battery module or battery pack more compact.

[0082] In some embodiments, referring to Figures 4 and 6, an adhesive storage tank 343 is provided on the upper surface of the second connecting portion 34b, the adhesive storage tank 343 is located at the bottom of the second fixing portion 332, and the adhesive storage tank 343 is arranged so that the bottom of the second fixing portion 332 is bonded to the second connecting portion 34b by storing adhesive.

[0083] The shape of the adhesive storage tank 343 may be any shape and is not specifically limited here.

[0084] The upper surface of the second connection portion 34b refers to the surface of the output pole 33 facing the second fixing portion 332.

[0085] By injecting adhesive into the adhesive storage tank 343, once it is filled with adhesive, the second fixing portion 332 and the second connecting portion 34b of the output pole 33 can be bonded and fixed together, thereby ensuring that the output pole 33 is more securely fixed.

[0086] In some embodiments, referring to Figures 4, 6, and 7, the insulating plate 34 is provided with through-holes 341 in the thickness direction A of the partition plate 31, and the adhesive injection holes 341 are arranged so as to deliver adhesive to the top of the battery cell 20, thereby bonding and fixing the bottom of the insulating plate 34 to the top of the battery cell 20.

[0087] The shape of the adhesive injection hole 341 may be a square hole, a circular hole, or the like, but is not limited to these.

[0088] Since the adhesive injection hole 341 penetrates the insulating plate 34, adhesive can be injected into the adhesive injection hole 341 from the top of the insulating plate 34, enabling adhesive injection after the partition plate assembly is installed and facilitating installation.

[0089] In some embodiments, referring to Figure 6, an adhesive injection tank 342 is provided on the upper surface of the insulating plate 34, and in the thickness direction A of the partition plate 31, the bottom of the adhesive injection tank 342 is shallower than the bottom of the adhesive storage tank 343, and an adhesive discharge port is provided in the adhesive injection tank 342, which communicates with the adhesive storage tank 343 and is used to discharge the adhesive into the adhesive storage tank 343.

[0090] Specifically, an enclosure 344 with an opening can be provided on the upper surface of the insulating plate 34, the internal space of the enclosure 344 can be used as an adhesive injection tank 342, and the opening of the enclosure 344 can be used as an adhesive discharge port. Alternatively, the enclosure 344 may be omitted, and a groove may be created on the upper surface of the insulating plate 34 to serve as the adhesive injection tank 342.

[0091] The bottom of the adhesive injection tank 342 is shallower than the bottom of the adhesive storage tank 343, and their bottom surfaces form a step. When adhesive is injected into the adhesive injection tank 342, the adhesive can flow from the higher point to the lower point in the adhesive storage tank 343, enabling bonding between the output electrode 33 and the insulating plate 34. By providing the adhesive injection tank 342, bonding between the insulating plate 34 and the output electrode 33 becomes easier, and it is no longer necessary to apply adhesive to the partition plate 31 and the insulating plate 34 and attach them as a single unit, making the operation easier.

[0092] In some embodiments, referring to Figure 6, the adhesive injection hole 341 is located in the adhesive injection tank 342.

[0093] The height of the top of the adhesive injection hole 341 may be greater than, equal to, or less than the height of the top edge of the adhesive injection tank 342.

[0094] For example, the height of the top of the adhesive injection hole 341 may be greater than the height of the top edge of the adhesive injection tank 342. First, adhesive can be injected into the adhesive injection hole 341, and once the adhesive injection hole 341 is filled with adhesive, the adhesive will overflow from the adhesive injection hole 341 into the adhesive injection tank 342, and then flow from the adhesive injection tank 342 into the adhesive storage tank 343. Adhesive can also be injected into the adhesive injection hole 341 and the adhesive injection tank 342 separately.

[0095] For example, the height of the top of the adhesive injection hole 341 may be equal to the height of the top edge of the adhesive injection tank 342. First, adhesive can be injected into the adhesive injection hole 341, and once the adhesive injection hole 341 is filled with adhesive, the adhesive will overflow from the adhesive injection hole 341 into the adhesive injection tank 342, and then flow from the adhesive injection tank 342 into the adhesive storage tank 343. Adhesive can also be injected into the adhesive injection hole 341 and the adhesive injection tank 342 separately.

[0096] For example, the height of the top of the adhesive injection hole 341 is less than the height of the top edge of the adhesive injection tank 342. First, the adhesive can be injected into the adhesive injection tank 342, and the adhesive flows into both the adhesive injection hole 341 and the adhesive storage tank 343.

[0097] By injecting adhesive into the adhesive injection hole 341 or the adhesive injection tank 342, or by injecting adhesive into both the adhesive injection hole 341 and the adhesive injection tank 342, adhesive fixing between the insulating plate 34 and the battery cell 20 and between the insulating plate 34 and the output electrode 33 can be achieved, making the operation simpler and more convenient.

[0098] In some embodiments, as shown in Figure 6, reinforcing ribs are provided in the adhesive injection holes 341.

[0099] The reinforcing ribs may be cross-shaped, but are not limited to that; they may also be X-shaped, etc.

[0100] This enables bonding between the adhesive and the insulating plate 34, thereby increasing the strength of the insulating plate 34.

[0101] In some embodiments, referring to Figure 6, an adhesive injection observation window 345 is provided in the insulating plate 34, and the adhesive injection observation window 345 penetrates the insulating plate 34 in the thickness direction of the insulating plate 34.

[0102] The adhesive injection observation window 345 may be provided on one side of the adhesive injection hole 341. When adhesive is injected into the battery cell 20 from the adhesive injection hole 341, the adhesive flows laterally. When the adhesive flows to the adhesive injection observation window 345, it can be determined that there is too much adhesive, and the adhesive injection can be stopped.

[0103] This allows the adhesive injection observation window 345 to determine whether or not there is too much adhesive flowing from the adhesive injection hole 341 to the battery cell 20.

[0104] In the following embodiments, for the sake of clarity, a battery module from one of the embodiments of this application will be described as an example.

[0105] The battery module of this application comprises the partition plate assembly and at least one battery cell 20. Here, the partition plate assembly is located on top of the battery cell 20, and the battery cell 20 is connected to the insulating plate 34.

[0106] The fact that the battery cell 20 is connected to the insulating plate 34 means that the battery cell 20 is fixed to the insulating plate 34 and cannot be moved.

[0107] The battery module of this application includes the technical features of the partition plate assembly described above, and its effects are the same as those described above, and will not be repeated here.

[0108] In some embodiments, the top of the battery cell 20 is fixed to the bottom of the insulating plate 34 by adhesive bonding.

[0109] Specifically, by injecting adhesive into the adhesive injection holes 341 of the insulating plate 34, adhesive fixing of the battery cell 20 and the insulating plate 34 can be achieved.

[0110] This makes the insulating plate 34 more robust, further secures the second fixing part 332 of the output pole 33 more reliably, and prevents the problem of the second fixing part 332 of the output pole 33 breaking and becoming inoperable during transport and locking.

[0111] In the following embodiments, for the sake of clarity, a battery pack from one of the embodiments of this application will be described as an example.

[0112] The battery pack of this application comprises a battery module.

[0113] Specifically, the battery module is located in the battery pack's box.

[0114] The battery module includes the technical features of the partition plate assembly described above, and its effect is the same as described above; therefore, it will not be explained again here.

[0115] In the following embodiments, for the sake of clarity, a partition plate assembly of some embodiments of this application will be described as an example.

[0116] Referring to Figures 4 to 7, the partition plate assembly comprises a partition plate 31, bus bars 32, output poles 33, and an insulating plate 34. Here, the partition plate 31 is provided with multiple bus bar mounting positions. Bus bars 32 are insulatedly mounted at each bus bar mounting position. The output pole 33 comprises a first fixing part 331 and a second fixing part 332, the first fixing part 331 being electrically connected to one of the multiple bus bars 32, and the second fixing part 332 being located further away from the bus bar 32 than the first fixing part 331. The insulating plate 34 includes a first connecting part 34a connected to the partition plate 31 and a second connecting part 34b insulatedly connected to the second fixing part 332.

[0117] The second connecting portion 34b is attached to the second fixing portion 332 by adhesion, and an adhesive layer is provided between them.

[0118] The partition plate 31 comprises a first insulating plate 311 and a second insulating plate 312. The second insulating plate 312 is laminated with the first insulating plate 311, and the first connecting portion 34a is located between the first insulating plate 311 and the second insulating plate 312.

[0119] At least one of the multiple busbars 32 presses the first connection portion 34a against the first insulating plate 311 or the second insulating plate 312.

[0120] The first connection portion 34a is connected to the first insulating plate 311, and / or the first connection portion 34a is connected to the second insulating plate 312.

[0121] The second fixing portion 332 has a plate-like structure, and the second fixing portion 332 is provided above the second connecting portion 34b in the lateral direction.

[0122] An adhesive storage tank 343 is provided on the upper surface of the second connecting portion 34b, and the adhesive storage tank 343 is located at the bottom of the second fixing portion 332. The adhesive storage tank 343 is positioned so that it stores adhesive, thereby bonding the bottom of the second fixing portion 332 to the second connecting portion 34b.

[0123] The insulating plate 34 has through-holes 341 in the thickness direction A of the partition plate 31, and the adhesive injection holes 341 are arranged so as to deliver adhesive to the top of the battery cell 20, thereby bonding and fixing the bottom of the insulating plate 34 to the top of the battery cell 20.

[0124] An adhesive injection tank 342 is provided on the upper surface of the insulating plate 34. In the thickness direction A of the partition plate 31, the bottom of the adhesive injection tank 342 is shallower than the bottom of the adhesive storage tank 343. The adhesive injection tank 342 is provided with an adhesive discharge port, which communicates with the adhesive storage tank 343 and is used to discharge the adhesive into the adhesive storage tank 343.

[0125] The adhesive injection hole 341 is located in the adhesive injection tank 342.

[0126] Reinforcement ribs are optionally provided in the adhesive injection holes 341.

[0127] Optionally, an adhesive injection observation window 345 is provided in the insulating plate 34, and the adhesive injection observation window 345 penetrates the insulating plate 34 in the thickness direction of the insulating plate 34.

[0128] Finally, it should be noted that the above embodiments are merely illustrative of the technical proposals of this application and do not limit them. While this application has been described in detail with reference to the embodiments described above, those skilled in the art should understand that they may modify the technical proposals described in the embodiments described above, or make equivalent substitutions to some or all of their technical features, and that such modifications or substitutions will not cause the essence of the corresponding technical proposals to deviate from the scope of the technical proposals of the embodiments of this application, and will all be included within the scope of the claims and specification of this application. In particular, any technical feature described in each embodiment can be combined in any way, provided there is no structural inconsistency. This application is not limited to the specific embodiments disclosed herein, but includes all technical proposals included in the claims. [Explanation of Symbols]

[0129] 1000 vehicles 100 Battery Pack 10 Battery pack housing 11 boxes 12 Top lid 20 battery cells 21 Top cover assembly 21a Electrode terminal 22 Housing 23 Electrode assembly 23a Positive Tab 23b Negative tab 31 Partition Plate 311 First insulating plate 312 Second insulating plate 32 Bus Bar 33 Output poles 331 1st fixed part 332 Second fixed part 34 Insulating board 34a First connection section 34b Second connection section 341 Adhesive injection hole 342 Adhesive injection tank 343 Adhesive storage tank 344 Enclosure 345 Adhesive injection observation window A. Thickness direction of partition plate 31 200 controllers 300 motor

Claims

1. A partition plate with multiple busbar mounting positions, A busbar is attached to the aforementioned busbar mounting position, The first fixed portion includes a first fixed portion and a second fixed portion, the first fixed portion being an output pole electrically connected to at least one of the busbars, An insulating plate including a first connecting portion connected to the partition plate and a second connecting portion connected to the second fixing portion, Equipped with, The aforementioned partition plate is, First insulating plate body, A partition plate assembly comprising a first insulating plate and a second insulating plate laminated thereon, wherein the busbar is provided between the first insulating plate and the second insulating plate, and the first connecting portion is located between the first insulating plate and the second insulating plate.

2. The partition plate assembly according to claim 1, characterized in that the second connecting portion is bonded to the second fixing portion.

3. The partition plate assembly according to claim 1, characterized in that the first connecting portion is connected to the first insulating plate body and / or the first connecting portion is connected to the second insulating plate body.

4. The partition plate assembly according to claim 1, characterized in that at least one of the plurality of busbars presses the first connection portion against the first insulating plate or the second insulating plate.

5. The partition plate assembly according to claim 1, characterized in that the second fixing portion has a plate-like structure, and the second fixing portion is provided laterally above the second connecting portion.

6. The partition plate assembly according to claim 5, characterized in that an adhesive storage tank is provided on the upper surface of the second connecting portion, the adhesive storage tank is located at the bottom of the second fixing portion, and the adhesive storage tank is arranged to store adhesive.

7. The partition plate assembly according to claim 6, characterized in that the insulating plate has through-holes for injecting adhesive in the thickness direction of the partition plate, and the adhesive injection holes are arranged to transport adhesive to the top of the battery cell.

8. The partition plate assembly according to claim 7, characterized in that an adhesive injection tank is provided on the upper surface of the insulating plate, the bottom of the adhesive injection tank is shallower than the bottom of the adhesive storage tank in the thickness direction of the partition plate, an adhesive discharge port is provided in the adhesive injection tank, and the adhesive discharge port communicates with the adhesive storage tank and is used to discharge adhesive into the adhesive storage tank.

9. The partition plate assembly according to claim 8, characterized in that the adhesive injection hole is located within the adhesive injection tank.

10. The partition plate assembly according to claim 9, characterized in that reinforcing ribs are provided in the adhesive injection hole.

11. The partition plate assembly according to claim 8, characterized in that the insulating plate is provided with an adhesive injection observation window, and the adhesive injection observation window penetrates the insulating plate in the thickness direction of the insulating plate.

12. At least one battery cell, A battery module comprising a partition plate assembly according to any one of claims 1 to 11 located at the top of the battery cell, wherein the battery cell is connected to the insulating plate.

13. The battery module according to claim 12, characterized in that the top of the battery cell is bonded and fixed to the bottom of the insulating plate.

14. A battery pack characterized by comprising the battery module described in claim 12.

15. An electrical device comprising a battery module as described in claim 12, wherein the battery module is used to provide electrical energy.

16. An electrical device comprising the battery pack described in Claim 14, wherein the battery pack is used to provide electrical energy.

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