Battery and electric equipment

Abstract

The embodiment of the utility model provides a battery and electric equipment, the battery comprises a battery monomer, a first confluence piece and a wire harness isolation plate, the battery monomer comprises a shell and a first electrode terminal, the shell is provided with a first wall, and the first electrode terminal is arranged on the first wall; the first confluence piece is arranged on the outer side of the first wall, and the first confluence piece is electrically connected with the first electrode terminal; in the thickness direction of the first wall, at least one part of the wire harness isolation plate is arranged between the first convergence piece and the first wall; wherein the outer surface of the first wall is an exposed surface.

Description

Technical Field

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

[0002] Energy conservation and emission reduction are the key to the sustainable development of the automobile industry. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their advantages of energy conservation and environmental protection. For electric vehicles, battery technology is an important factor related to their development.

[0003] Batteries are widely used in portable electronic devices, electric vehicles, electric tools, drones, energy storage devices, etc. How to reduce the cost of batteries is a technical problem that needs to be solved urgently in battery technology. Utility Model Content

[0004] The present application provides a battery and an electrical device, which can reduce the cost of the battery.

[0005] This application is achieved through the following technical solutions:

[0006] In a first aspect, an embodiment of the present application provides a battery, comprising a battery cell, a first busbar and a wiring harness isolation plate, the battery cell comprising an outer shell and a first electrode terminal, the outer shell having a first wall, the first electrode terminal being arranged on the first wall; a first busbar is arranged on the outer side of the first wall, the first busbar is electrically connected to the first electrode terminal; along the thickness direction of the first wall, at least a portion of the wiring harness isolation plate is arranged between the first busbar and the first wall; wherein the outer surface of the first wall is an exposed surface.

[0007] According to the battery of the embodiment of the present application, the outer surface of the first wall is an exposed surface, the insulating patch on the outer surface of the first wall is cancelled, and at least a portion of the wiring harness isolation plate is arranged between the first busbar and the first wall; therefore, on the one hand, the material cost of the battery is reduced and the production efficiency of the battery is improved; on the other hand, the wiring harness isolation plate can insulate the outer surface of the first wall, thereby reducing the probability of contact between the first busbar and the first wall.

[0008] According to some embodiments of the present application, the harness isolation plate is provided with a first through hole, and the first bus bar is exposed from the first through hole to be connected with the first electrode terminal.

[0009] In the above solution, the first busbar can pass through the first through hole to contact the first electrode terminal, thereby achieving electrical connection between the two; or the first electrode terminal can pass through the first through hole to contact the first busbar, thereby achieving electrical connection between the two. Thus, the first electrode terminal and the first busbar can be easily contacted.

[0010] According to some embodiments of the present application, the battery cell also includes a first insulating member, the first electrode terminal is insulated and installed on the first wall through the first insulating member, and at least a portion of the first insulating member is exposed on the outer surface of the first wall; along the thickness direction of the first wall, the projection of the wiring harness isolation plate and the projection of the first insulating member have an overlapping area.

[0011] In the above solution, the first bus bar contacts the first insulating member at most and does not contact the outer surface of the first wall, thereby greatly reducing the probability of the first bus bar contacting the first wall through the first through hole and reducing the probability of the first wall being charged.

[0012] According to some embodiments of the present application, the first insulating member is disposed around the first electrode terminal, and a diameter of the first through hole is smaller than an outer diameter of the first insulating member.

[0013] In the above solution, the first current collector contacts the first insulating member at most through the first through hole, and the first current collector will not contact the first wall through the first through hole, thereby reducing the probability of the first wall being charged.

[0014] According to some embodiments of the present application, the overlapping area is an annular area surrounding the first electrode terminal.

[0015] In the above solution, the first busbar can only contact the first electrode terminal and at most the first insulating member, which further reduces the probability of the first busbar contacting the first wall and reduces the probability of the first wall being charged.

[0016] According to some embodiments of the present application, along the radial direction of the first electrode terminal, the width of the annular area is A, satisfying: 0.3 mm ≤ A ≤ 10 mm.

[0017] In the above scheme, on the one hand, it is ensured that the first insulating member and the wiring harness isolation plate have a sufficiently large overlapping area in the thickness direction of the first wall, and on the other hand, part of the wiring harness isolation plate will not extend between the first busbar and the first electrode terminal, thereby reducing the influence of the wiring harness isolation plate on the connection effect between the first busbar and the first electrode terminal.

[0018] According to some embodiments of the present application, along a thickness direction of the first wall, the first insulating member is in contact with the wire harness isolation plate.

[0019] In the above solution, along the thickness direction of the first wall, the harness isolation plates can be overlapped by the first insulating member. The first current collector will not pass through the first through hole to contact the first wall, thereby reducing the probability of the first wall being charged.

[0020] According to some embodiments of the present application, along a thickness direction of the first wall, the first insulating member and the wire harness isolation plate are interference fit.

[0021] In the above scheme, after the wire harness isolating plate is sandwiched between the first busbar and the first insulating member, the wire harness isolating plate is compressed, and the elastic force of the wire harness isolating plate can react on the first busbar and the first insulating member. Thus, the gap between the wire harness isolating plate and the first busbar and between the wire harness isolating plate and the first insulating member is reduced, and the wire harness isolating plate can be more firmly installed between the first busbar and the first insulating member.

[0022] According to some embodiments of the present application, the battery cell further comprises a first connector, the first connector being fixed to the first wall, and the first connector fixing the first electrode terminal to the first wall via the first insulating member. In the above solution, the first electrode terminal can be more firmly mounted to the first wall.

[0023] According to some embodiments of the present application, the wire harness isolation plate is fixedly connected to the first busbar, and the wire harness isolation plate is spaced apart from an outer surface of the first wall.

[0024] In the above scheme, when the battery cell expands and moves, the wiring harness isolation plate will not rub against the first wall due to contact with the first wall, thereby improving the service life of the wiring harness isolation plate, making the wiring harness isolation plate less prone to wear and more durable.

[0025] According to some embodiments of the present application, there are a plurality of battery cells, there are a plurality of wiring harness isolation plates, and each of the wiring harness isolation plates is disposed on the outer side of the first wall of the corresponding battery cell.

[0026] In the above solution, the arrangement of the wiring harness isolation plate is more flexible, and when the wiring harness isolation plate on the outer side of the first wall of a battery cell is damaged, only the damaged wiring harness isolation plate needs to be replaced, which greatly reduces the maintenance cost of the battery.

[0027] According to some embodiments of the present application, there are a plurality of battery cells, there is at least one wiring harness isolation plate, and each of the wiring harness isolation plates is disposed on the outside of the first walls of the plurality of battery cells.

[0028] In the above solution, one wiring harness isolation plate corresponds to the first walls of multiple battery cells, thereby greatly improving the production efficiency of the battery during the battery production process.

[0029] In a second aspect, an embodiment of the present application provides an electrical device, comprising the battery of the above embodiment.

[0030] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 A schematic diagram of a vehicle provided in an embodiment of the present application;

[0033] Figure 2 An exploded view of a battery provided in an embodiment of the present application;

[0034] Figure 3 An exploded view of a battery cell provided in an embodiment of the present application;

[0035] Figure 4 An exploded view of a battery provided in accordance with another embodiment of the present application;

[0036] Figure 5 A schematic diagram of the wiring harness isolation plate provided in an embodiment of the present application cooperating with the first wall;

[0037] Figure 6 A top view of a battery provided in accordance with another embodiment of the present application;

[0038] Figure 7 for Figure 6 Cross-sectional view along AA direction;

[0039] Figure 8 for Figure 7 The enlarged view of the part B is circled.

[0040] Icon: vehicle 1000, battery 100, controller 200, motor 300, case 10, battery cell 20, first sub-case 11, second sub-case 12, outer shell 21, electrode assembly 22, shell 211, first wall 212, first electrode terminal 25, first insulating member 26, first connecting member 27, first bus 30, wiring harness isolation plate 40, first through hole 101, overlapping area 102. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0042] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0043] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0044] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0046] The term "multiple" as used in this application refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple sheets" refers to more than two sheets (including two sheets).

[0047] In some embodiments, the battery may be a battery module. When there are multiple battery cells, the multiple battery cells are arranged and fixed to form a battery module.

[0048] In some embodiments, the battery may be a battery pack, which includes a case and battery cells, wherein the battery cells or battery modules are accommodated in the case.

[0049] In some embodiments, the box body can be used as a part of the chassis structure of the vehicle. For example, part of the box body can become at least a part of the floor of the vehicle, or part of the box body can become at least a part of the cross beam and longitudinal beam of the vehicle.

[0050] In some embodiments, the battery may be an energy storage device, which includes an energy storage container, an energy storage cabinet, and the like.

[0051] In the embodiment of the present application, the battery cell may be a secondary battery. A secondary battery refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0052] The battery cells may be, but are not limited to, lithium ion batteries, sodium ion batteries, sodium lithium ion batteries, lithium metal batteries, sodium metal batteries, lithium sulfur batteries, magnesium ion batteries, nickel hydrogen batteries, nickel cadmium batteries, lead storage batteries, etc.

[0053] In some embodiments, the battery cell may include a housing. The housing is used to encapsulate components such as the electrode assembly and the electrolyte. The housing may be a steel housing, an aluminum housing, a plastic housing (such as polypropylene), a composite metal housing (such as a copper-aluminum composite housing), or an aluminum-plastic film.

[0054] In some embodiments, the housing includes an end cap and a shell, the shell is provided with an opening, and the end cap closes the opening to form a closed space for accommodating substances such as the electrode assembly and the electrolyte. The shell may be provided with one or more openings. One or more end caps may also be provided.

[0055] In some embodiments, at least one electrode terminal is disposed on the housing, and the electrode terminal is electrically connected to the electrode tab of the electrode assembly. The electrode terminal may be directly connected to the electrode tab, or may be indirectly connected to the electrode tab through an adapter. The electrode terminal may be disposed on the end cap, or may be disposed on the housing.

[0056] In some embodiments, an explosion-proof valve is provided on the housing, and the explosion-proof valve is used to release the internal pressure of the battery cell.

[0057] As an example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, a soft-pack battery cell or a battery cell of other shapes. The prismatic battery cell includes a square shell battery cell, a blade-shaped battery cell, a polygonal prismatic battery, such as a hexagonal prismatic battery, etc. There is no particular limitation in the embodiments of the present application.

[0058] The battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity.

[0059] In some embodiments, the battery may be a battery module. When there are multiple battery cells, the multiple battery cells are arranged and fixed to form a battery module.

[0060] In some embodiments, the battery may be a battery pack, which includes a case and battery cells, wherein the battery cells or battery modules are accommodated in the case.

[0061] In some embodiments, the box body can be used as a part of the chassis structure of the vehicle. For example, part of the box body can become at least a part of the floor of the vehicle, or part of the box body can become at least a part of the cross beam and longitudinal beam of the vehicle.

[0062] In some embodiments, the battery may be an energy storage device, which includes an energy storage container, an energy storage cabinet, and the like.

[0063] Batteries have outstanding advantages such as high energy density, low environmental pollution, high power density, long service life, wide adaptability, and small self-discharge coefficient. They are an important part of the development of new energy today.

[0064] The development of battery technology must take into account multiple design factors at the same time, such as performance parameters such as energy density, discharge capacity, charge and discharge rate, and also the assembly efficiency of the battery.

[0065] The battery cells disclosed in the embodiments of the present application can be used, but not limited to, in electrical equipment such as vehicles, ships or aircraft. The power supply system of the electrical equipment can be composed of the battery cells and batteries disclosed in the present application.

[0066] The embodiment of the present application provides an electric device using a battery cell as a power source, and the electric device may be, but is not limited to, a mobile phone, a tablet computer, a laptop computer, an electric toy, an electric tool, an electric bicycle, an electric motorcycle, an electric car, a ship, a spacecraft, etc. Among them, the electric toy may include a fixed or mobile electric toy, for example, a game console, an electric car toy, an electric ship toy, an electric airplane toy, etc., and the spacecraft may include an airplane, a rocket, a space shuttle, a spacecraft, etc.

[0067] For the convenience of description, the following embodiments are described by taking a vehicle 1000 as an example of an electrical device in an embodiment of the present application.

[0068] Please refer to Figure 1 , Figure 1Schematic diagram of a vehicle provided for the first embodiment of the present application. Vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 100 is provided inside the vehicle 1000, and the battery 100 may be provided at the bottom, head or tail of the vehicle 1000. The battery 100 may be used to power the vehicle 1000, for example, the battery 100 may be used as an operating power source for the vehicle 1000, for the circuit system of the vehicle 1000, for example, for the working power requirements during the startup, navigation and operation of the vehicle 1000.

[0069] The vehicle 1000 may further include a controller 200 and a motor 300 , wherein the controller 200 is used to control the battery 100 to supply power to the motor 300 , for example, to meet the power requirements of starting, navigating, and driving the vehicle 1000 .

[0070] In some embodiments of the present application, the battery 100 can not only serve as an operating power source for the vehicle 1000, but also serve as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0071] Please refer to Figure 2 , Figure 2 An exploded diagram of a battery provided in the first embodiment of the present application. The battery 100 includes a case 10 and a battery cell 20, and the battery cell 20 is contained in the case 10. Among them, the case 10 is used to provide a storage space for the battery cell 20, and the case 10 can adopt a variety of structures. In some embodiments, the case 10 may include a first sub-case 11 and a second sub-case 12, and the first sub-case 11 and the second sub-case 12 cover each other, and the first sub-case 11 and the second sub-case 12 jointly define a storage space for accommodating the battery cell 20. The second sub-case 12 may be a hollow structure with one end open, and the first sub-case 11 may be a plate-like structure, and the first sub-case 11 covers the open side of the second sub-case 12, so that the first sub-case 11 and the second sub-case 12 jointly define a storage space; the first sub-case 11 and the second sub-case 12 may also be hollow structures with one side open, and the open side of the first sub-case 11 covers the open side of the second sub-case 12.

[0072] In the battery 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 the multiple battery cells 20 are both connected in series and in parallel. The multiple battery cells 20 may be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple battery cells 20 is accommodated in the box 10; of course, the battery 100 may also be a battery module formed by connecting multiple battery cells 20 in series, in parallel, or in a mixed connection, and then the multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole, and accommodated in the box 10. The battery 100 may also include other structures, for example, the battery 100 may also include a busbar component for realizing electrical connection between the multiple battery cells 20.

[0073] The battery cell 20 may be a secondary battery or a primary battery; the battery cell 20 may also be a lithium-sulfur battery, a sodium-ion battery or a magnesium-ion battery, but is not limited thereto.

[0074] Please refer to Figure 3 , Figure 3 An exploded view of a battery cell provided in some embodiments of the present application. Figure 3 As shown, the battery cell 20 includes a housing 21, an electrode assembly 22 and an electrode terminal (e.g., a first electrode terminal 25). The housing 21 includes a shell 211 and an end cap (a first wall 212), the shell 211 has an opening, and the end cap closes the opening to isolate the internal environment of the battery cell 20 from the external environment.

[0075] The shell 211 is a component used to cooperate with the end cap to form the internal environment of the battery cell 20, wherein the formed internal environment can be used to accommodate the electrode assembly 22, the electrolyte and other components. The shell 211 and the end cap can be independent components. The shell 211 can be of various shapes and sizes. Specifically, the shape of the shell 211 can be determined according to the specific shape and size of the electrode assembly 22. The material of the shell 211 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0076] The end cap refers to a component that covers the opening of the shell 211 to isolate the internal environment of the battery cell 20 from the external environment. Without limitation, the shape of the end cap can be adapted to the shape of the shell 211 to match the shell 211. Optionally, the end cap can be made of a material with a certain hardness and strength (such as aluminum alloy), so that the end cap is not easily deformed when squeezed and collided, so that the battery cell 20 can have a higher structural strength and reliability can also be improved. Functional components such as electrode terminals can be provided on the end cap. The electrode terminal can be used to electrically connect to the electrode assembly 22 for outputting or inputting electrical energy of the battery cell 20. The material of the end cap can also be a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiments of the present application are not particularly limited to this. In some embodiments, an insulating structure can also be provided on the inner side of the end cap, and the insulating structure can be used to isolate the electrical connection components in the shell 211 from the end cap to reduce the risk of short circuit. Exemplarily, the insulating structure can be plastic, rubber, etc.

[0077] The electrode assembly 22 is a component in the battery cell 20 where electrochemical reactions occur. One or more electrode assemblies 22 may be included in the housing 211. The electrode assembly 22 is mainly formed by winding or stacking the positive electrode sheet and the negative electrode sheet, and a separator is usually provided between the positive electrode sheet and the negative electrode sheet, and the separator is used to separate the positive electrode sheet and the negative electrode sheet to avoid short circuits between the positive electrode sheet and the negative electrode sheet. The parts of the positive electrode sheet and the negative electrode sheet with active materials constitute the main body of the electrode assembly, and the parts of the positive electrode sheet and the negative electrode sheet without active materials each constitute a pole ear. The positive pole ear and the negative pole ear may be located together at one end of the main body or respectively at both ends of the main body. During the charge and discharge process of the battery, the positive active material and the negative active material react with the electrolyte, and the pole ears connect the electrode terminals to form a current loop.

[0078] In the related art, a top patch is generally provided on the outer surface of the end cover of the battery cell to insulate the end cover; at the same time, the battery also includes a wiring harness isolation plate, which can be provided at the outer end of the top patch. The wiring harness isolation plate is generally also an insulating part and can be used to install the bar and allow the sampling harness to pass through.

[0079] Therefore, two layers of insulation structures are set on the outside of the end cap of the battery cell, one is the top patch and the other is the wiring harness isolation plate. The insulation of the outer surface of the end cap is completed by two plates - the top patch and the wiring harness isolation plate, so the material cost of the battery is high, and the attachment of the top patch and the installation of the wiring harness isolation plate require their own processes to complete, so the production efficiency is low.

[0080] To this end, the present application proposes a battery whose production cost can be reduced.

[0081] The battery 100 according to the embodiment of the present application may include a battery cell 20 , a first busbar 30 , and a harness isolation plate 40 .

[0082] like Figure 3-Figure 5 As shown, the battery cell 20 includes a housing 21 , and the housing 21 may define a containing space, and the electrode assembly 22 and the electrolyte, etc. may be packaged in the containing space defined by the housing 21 .

[0083] The housing 21 may be a metal housing, a plastic housing, or a composite metal housing.

[0084] In the present application, the housing 21 includes a first wall 212, and the first electrode terminal 25 is disposed on the first wall 212. The first wall 212 may be provided with an opening, and the first electrode terminal 25 may pass through the opening to be electrically connected to the electrode assembly 22. For example, the first electrode terminal 25 may be electrically connected to the tab of the electrode assembly 22 through a transition piece.

[0085] The first electrode terminal 25 and the first wall 212 may be insulated and isolated by an insulating member.

[0086] The housing 21 may include an end cap and a shell 211. The shell 211 is provided with an opening, and the end cap is fixedly connected to the shell 211 and used to close the opening. Thus, the end cap and the shell 211 form a closed space for accommodating the electrode assembly 22 and substances such as electrolyte.

[0087] The housing 211 may be provided with one or more openings, and correspondingly, the number of end caps may also be one or more.

[0088] The first wall 212 in the embodiment of the present application may be the end cap mentioned above. Of course, the first wall 212 may also be a wall portion of the housing 211, for example, may be a wall portion of the housing 211 opposite to the end cap.

[0089] The battery further includes a first busbar 30 , which can realize electrical connection of a plurality of battery cells 20 . In the present application, the first busbar 30 is disposed on the outer side of the first wall 212 .

[0090] It should be noted that the outer side of the first wall 212 refers to the side of the first wall 212 facing away from the inner space of the battery cell 20 .

[0091] The first current bus 30 is electrically connected to the first electrode terminal 25 , so that current can flow through the electrode assembly 22 and the first electrode terminal 25 to reach the first current bus 30 .

[0092] The wire harness isolation plate 40 can be used for installing and fixing the sampling wire harness, and of course can also be used for installing and positioning the first busbar 30 .

[0093] In some embodiments, the wire harness isolation plate 40 also has the functions of air guiding and exhausting.

[0094] At least a portion of the harness isolating plate 40 is disposed between the first busbar 30 and the first wall 212 along the thickness direction of the first wall 212. Thus, the harness isolating plate 40 separates the first busbar 30 from the first wall 212, thereby reducing the probability of the first busbar 30 contacting the first wall 212, and reducing the probability of the first wall 212 being charged due to the contact between the first busbar 30 and the first wall 212.

[0095] In the battery of the embodiment of the present application, the outer surface of the first wall 212 is an exposed surface. In other words, the outer surface of the first wall 212 is no longer blocked by the insulating patch, and the outer surface of the first wall 212 is directly exposed.

[0096] At least a portion of the harness isolating plate 40 is disposed between the first busbar 30 and the first wall 212 along the thickness direction of the first wall 212. Therefore, the first wall 212 can be insulated and isolated from the first busbar 30 or other devices by the harness isolating plate 40.

[0097] According to the battery of the embodiment of the present application, the outer surface of the first wall 212 is an exposed surface, the insulating patch on the outer surface of the first wall 212 is cancelled, and at least a portion of the wiring harness isolation plate 40 is arranged between the first bus 30 and the first wall 212; therefore, on the one hand, the material cost of the battery 100 is reduced and the production efficiency of the battery 100 is improved; on the other hand, the wiring harness isolation plate 40 can insulate the outer surface of the first wall 212, thereby reducing the probability of contact between the first bus 30 and the first wall 212.

[0098] In some embodiments of the present application, Figure 4 As shown, the harness isolating plate 40 is provided with a first through hole 101 , and the first bus 30 is exposed through the first through hole 101 to be connected with the first electrode terminal 25 .

[0099] The first bus bar 30 may pass through the first through hole 101 to contact the first electrode terminal 25 to achieve electrical connection therebetween; or the first electrode terminal 25 may pass through the first through hole 101 to contact the first bus bar 30 to achieve electrical connection therebetween.

[0100] It is understood that the shape of the first through hole 101 can be the same or similar to the cross-sectional shape of the first electrode terminal 25, and the cross-sectional area of ​​the first through hole 101 is greater than or equal to the cross-sectional size of the first electrode terminal 25. Thus, the first electrode terminal 25 and the first busbar 30 are in contact with each other.

[0101] According to some embodiments of the present application, Figure 5 and Figure 8As shown, the battery cell 20 further includes a first insulating member 26 , and the first electrode terminal 25 is insulated and mounted on the first wall 212 via the first insulating member 26 .

[0102] The first electrode terminal 25 and the first wall 212 may be insulated and isolated by the first insulating member 26 , and no electrical connection can be achieved between the first electrode terminal 25 and the first wall 212 .

[0103] At least a portion of the first insulating member 26 is exposed on the outer surface of the first wall 212 . Along the thickness direction of the first wall 212 , the projection of the harness isolation plate 40 and the projection of the first insulating member 26 have an overlapping area 102 .

[0104] Therefore, the first bus 30 contacts the first insulating member 26 at most, but not the outer surface of the first wall 212 , thereby greatly reducing the probability of the first bus 30 contacting the first wall 212 through the first through hole 101 and reducing the probability of the first wall 212 being charged.

[0105] It should be noted that, along the thickness direction of the first wall 212, the projection of the harness isolation plate 40 and the projection of the outermost portion of the first insulating member 26 have an overlapping area 102. In other words, along the thickness direction of the first wall 212, the projection of the harness isolation plate 40 and the projection of the portion of the first insulating member 26 located outside the first wall 212 have an overlapping area 102.

[0106] In some embodiments of the present application, the first insulating member 26 is disposed around the first electrode terminal 25 , and the diameter of the first through hole 101 is smaller than the outer diameter of the first insulating member 26 .

[0107] Therefore, the first busbar 30 at most contacts the first insulating member 26 through the first through hole 101 , and the first busbar 30 will not contact the first wall 212 through the first through hole 101 , thereby reducing the probability of the first wall 212 being charged.

[0108] It is understandable that the diameter of the first through hole 101 is greater than the outer diameter of the portion where the first electrode terminal 25 contacts the first busbar 30. Thus, the wiring harness isolation plate 40 does not extend to the connection surface between the first electrode terminal 25 and the first busbar 30, and does not affect the connection strength and connection effect between the first electrode terminal 25 and the first busbar 30.

[0109] According to some embodiments of the present application, Figure 5 As shown, along the thickness direction of the first wall 212 , the projection of the harness isolating plate 40 and the projection of the first insulating member 26 have an overlapping area 102 , and the overlapping area 102 is an annular area surrounding the first electrode terminal 25 .

[0110] Therefore, the first busbar 30 can only contact the first electrode terminal 25 and at most the first insulating member 26, which further reduces the probability of the first busbar 30 contacting the first wall 212 and the probability of the first wall 212 being charged.

[0111] According to some embodiments of the present application, Figure 8 As shown, along the radial direction of the first electrode terminal 25, the width of the annular area is A, which satisfies: 0.3 mm ≤ A ≤ 10 mm.

[0112] For example, the width of the annular region may be 0.3 mm, 1 mm, 1.7 mm, 2.5 mm, 3.2 mm, 4 mm, 4.7 mm, 5.4 mm, 6.1 mm, 6.8 mm, 7.5 mm, 8.2 mm, 9.9 mm or 10 mm.

[0113] It should be noted that the width values ​​of the above-mentioned annular regions are only some specific examples of the present application, and any width of the annular region falling within the above-mentioned range is within the protection scope of the present application.

[0114] Since the width of the annular area satisfies the above range, on the one hand, it is ensured that the first insulating member 26 and the wiring harness isolation plate 40 have a sufficiently large overlapping area 102 in the thickness direction of the first wall 212. On the other hand, part of the wiring harness isolation plate 40 will not extend between the first bus 30 and the first electrode terminal 25, thereby reducing the influence of the wiring harness isolation plate 40 on the connection effect between the first bus 30 and the first electrode terminal 25.

[0115] In some embodiments of the present application, along the thickness direction of the first wall 212 , the first insulating member 26 is in contact with the wire harness isolation plate 40 .

[0116] This further ensures that the harness isolation plates 40 can be overlapped with the first insulating member 26 along the thickness direction of the first wall 212. The first busbar 30 will not pass through the first through hole 101 and contact the first wall 212, reducing the probability of the first wall 212 being charged.

[0117] According to some embodiments of the present application, along the thickness direction of the first wall 212 , the first insulating member 26 and the wire harness isolation plate 40 are interference-fitted.

[0118] For example, the harness isolation plate 40 may have a certain elasticity, and when the harness isolation plate 40 is not sandwiched between the first bus 30 and the first insulating member 26 , the thickness of the harness isolation plate 40 is greater than the gap between the first bus 30 and the first insulating member 26 .

[0119] After the harness isolating plate 40 is sandwiched between the first busbar 30 and the first insulating member 26, the harness isolating plate 40 is compressed, and the elastic force of the harness isolating plate 40 can react on the first busbar 30 and the first insulating member 26. Thus, the gap between the harness isolating plate 40 and the first busbar 30 and between the harness isolating plate 40 and the first insulating member 26 is reduced, and the harness isolating plate 40 can be more firmly installed between the first busbar 30 and the first insulating member 26.

[0120] In some embodiments of the present application, Figure 8 As shown, the battery cell 20 further includes a first connector 27, which is fixed to the first wall 212. The first connector 27 fixes the first electrode terminal 25 to the first wall 212 via the first insulating member 26. Thus, the first electrode terminal 25 can be more firmly installed on the first wall 212.

[0121] For example, the first connecting member 27 can be a welding ring, which can be welded and fixed to the first wall 212. The welding ring is connected to the first insulating member 26, and the first insulating member 26 is connected to the first electrode terminal 25. The welding ring presses the first insulating member 26, and then the first insulating member 26 is subjected to force to press the first electrode terminal 25 onto the first wall 212.

[0122] In some embodiments of the present application, Figure 8 As shown, the wire harness isolating plate 40 is fixedly connected to the first busbar 30. For example, the wire harness isolating plate 40 can be fixedly connected to the first busbar 30 by bonding. Thus, the installation stability of the wire harness isolating plate 40 is ensured.

[0123] The wire harness isolation plate 40 is spaced apart from the outer surface of the first wall 212, so when the battery cell 20 expands and moves, the wire harness isolation plate 40 will not rub against the first wall 212 due to contact with the first wall 212, thereby improving the service life of the wire harness isolation plate 40, making the wire harness isolation plate 40 less prone to wear and more durable.

[0124] According to some embodiments of the present application, there are a plurality of battery cells 20 , a plurality of wiring harness isolation plates 40 , and each wiring harness isolation plate 40 is disposed on the outer side of the first wall 212 of the corresponding battery cell 20 .

[0125] That is, there are multiple wire harness isolators 40 and multiple battery cells 20, and the multiple wire harness isolators 40 correspond one to one to the multiple battery cells 20. A corresponding wire harness isolator 40 is disposed on the outer side of the first wall 212 of each battery cell 20.

[0126] Therefore, the arrangement of the wiring harness isolation plate 40 is more flexible, and when the wiring harness isolation plate 40 outside the first wall 212 of a battery cell 20 is damaged, only the damaged wiring harness isolation plate 40 needs to be replaced, which greatly reduces the maintenance cost of the battery.

[0127] In some embodiments of the present application, there are multiple battery cells 20 , and there is at least one wiring harness isolation plate 40 . Each wiring harness isolation plate 40 is disposed on the outer surface of the first wall 212 of the multiple battery cells 20 .

[0128] Therefore, one wiring harness isolation plate 40 corresponds to the first walls 212 of a plurality of battery cells 20 , thereby greatly improving the production efficiency of the battery during the production process of the battery.

[0129] The following is a brief description of the electrical equipment in the embodiments of the present application.

[0130] The electric device according to the embodiment of the present application includes the above-mentioned battery 100. Since the electric device according to the embodiment of the present application is provided with the above-mentioned battery 100, the production cost of the battery is reduced and the production efficiency is improved.

[0131] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery, characterized in that: include: A battery cell, comprising a housing and a first electrode terminal, wherein the housing has a first wall, and the first electrode terminal is disposed on the first wall; a first busbar, disposed on the outer side of the first wall, the first busbar being electrically connected to the first electrode terminal; a wiring harness isolating plate, at least a portion of which is disposed between the first busbar and the first wall along a thickness direction of the first wall; Wherein, the outer surface of the first wall is an exposed surface.

2. The battery according to claim 1, characterized in that The harness isolation plate is provided with a first through hole, and the first bus bar is exposed from the first through hole to be connected to the first electrode terminal.

3. The battery according to claim 2, characterized in that The battery cell further includes a first insulating member, the first electrode terminal is insulated and mounted on the first wall through the first insulating member, and at least a portion of the first insulating member is exposed on the outer surface of the first wall; Along the thickness direction of the first wall, a projection of the harness isolating plate and a projection of the first insulating member have an overlapping area.

4. The battery according to claim 3, characterized in that The first insulating member is disposed around the first electrode terminal, and a diameter of the first through hole is smaller than an outer diameter of the first insulating member.

5. The battery according to claim 3, characterized in that The overlapping area is an annular area surrounding the first electrode terminal.

6. The battery according to claim 5, characterized in that Along the radial direction of the first electrode terminal, the width of the annular area is A, satisfying: 0.3 mm ≤ A ≤ 10 mm.

7. The battery according to claim 3, characterized in that The first insulating member is in contact with the harness isolation plate along a thickness direction of the first wall.

8. The battery according to claim 7, characterized in that The first insulating member is interference-fitted with the wire harness isolation plate along a thickness direction of the first wall.

9. The battery according to claim 3, characterized in that The battery cell further includes a first connector fixed to the first wall, and the first connector fixes the first electrode terminal to the first wall through the first insulating member.

10. The battery according to claim 1, characterized in that The wire harness isolating plate is fixedly connected to the first busbar, and the wire harness isolating plate is spaced apart from an outer surface of the first wall.

11. The battery according to claim 1, characterized in that There are a plurality of battery cells and a plurality of wiring harness isolation plates, and each of the wiring harness isolation plates is disposed on the outer side of the first wall of the corresponding battery cell.

12. The battery according to claim 1, characterized in that There are a plurality of battery cells, and there is at least one wiring harness isolation plate, and each of the wiring harness isolation plates is disposed outside the first walls of the plurality of battery cells.

13. An electrical equipment, characterized in that: A battery comprising any one of claims 1 to 12, wherein the battery is used to provide electrical energy.

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