Battery, electric equipment and energy storage device

Abstract

The utility model discloses a battery, electric equipment and an energy storage device, and relates to the technical field of energy storage and power batteries. The battery comprises a plurality of battery monomers, a metal bandage and an insulating part, the plurality of battery monomers are arranged side by side, and each battery monomer comprises a metal shell; the metal bandage bypasses the plurality of battery monomers and is used for binding the plurality of battery monomers; the insulating part is connected to the battery monomer or the metal bandage, and at least part of the insulating part is positioned between the battery monomer and the metal bandage; the insulation resistance value between the metal bandage and each metal shell is greater than or equal to A * B * 1000 ohm, A is the nominal voltage of the single battery, and the unit is V; b is the series connection number of the single batteries, and the unit is one. According to the technical scheme provided by the utility model, the problem that insulation failure is easy to occur between the metal bandage and the battery monomer during thermal runaway can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage and power batteries, and particularly relates to a battery, an electrical equipment and an energy storage device. Background Art

[0002] When assembling a battery, metal straps are usually used to enhance the structural stability for fixing the battery and absorbing expansion.

[0003] In the related art, in order to protect the battery cells in the battery, an insulating coating treatment is usually performed on the surface of the metal strap and / or the surface of the housing of the battery cell. When the battery is in thermal runaway, the insulating coating is prone to insulation failure, resulting in insulation failure between the metal strap and the battery cell. Summary of the Utility Model

[0004] In view of the above problems, the present application provides a battery, aiming to improve the problem of easy insulation failure between the metal strap and the battery cell during thermal runaway.

[0005] The present application provides a battery, including a plurality of battery cells, a metal strap and an insulating component; the plurality of battery cells are arranged side by side, and each battery cell includes a metal housing; the metal strap bypasses the plurality of battery cells for binding the plurality of battery cells; the insulating component is connected to the battery cell and / or the metal strap, and at least part of the insulating component is located between the battery cell and the metal strap; the insulation resistance value between the metal strap and each metal housing is greater than or equal to A*B*1000 ohms, where A is the nominal voltage of the battery cell in volts (V); B is the number of series-connected battery cells in units of pieces.

[0006] In the technical solution of the embodiment of the present application, by providing an independent insulating component, connecting the insulating component to the battery cell or the metal strap, and making at least part of the insulating component located between the battery cell and the metal strap, the battery cell can be protected; among them, the insulation resistance value between the metal strap and each metal housing is greater than or equal to A*B*1000 ohms. Therefore, when the battery is in thermal runaway, the insulation resistance value between the metal strap and the metal housing can also be maintained within the range of greater than or equal to A*B*1000 ohms, so that insulation failure does not occur between the metal strap and the battery cell when the battery undergoes thermal runaway.

[0007] In some embodiments, after the insulating component is placed in an ambient temperature of greater than or equal to 250 °C and less than or equal to 500 °C for 5 minutes, the insulation resistance value between the metal strap and each metal housing is greater than or equal to A*B*1000 ohms. With such a design, after the insulating component is treated at a temperature of 250 °C to 500 °C, the insulation resistance value between the metal strap and the metal housing can still be maintained within the range of greater than or equal to A*B*1000 ohms.

[0008] In some embodiments, the insulating component is phenolic film plastic, unsaturated polyester bulk molding compound, epoxy glass fiber, mica, ceramic coating, polytetrafluoroethylene, polyimide or aerogel. Such a design can make the material of the insulating component a high-temperature resistant material, so that after the insulating component is processed at a temperature of 250°C to 500°C, the insulation resistance between the metal strap and the metal housing can still be maintained within a range greater than or equal to A*B*1000 ohms. Therefore, under battery thermal runaway, the insulating component can also maintain a better insulation effect to improve the lap short circuit between the metal housing and the metal strap.

[0009] In some embodiments, after the insulating component is placed in an ambient temperature greater than or equal to 500°C and less than or equal to 1500°C for 1 min, the insulation resistance between the metal strap and each metal housing is greater than or equal to A*B*1000 ohms. Such a design can keep the insulation resistance between the metal strap and the metal housing within a range greater than or equal to A*B*1000 ohms after the insulating component is processed at a temperature of 500°C to 1500°C, further improving the high-temperature resistance performance requirements of the insulating component. Therefore, under battery thermal runaway, the insulating component can also maintain a better insulation effect to improve the lap short circuit between the metal housing and the metal strap.

[0010] In some embodiments, the insulating component is mica or ceramic coating. Such a design can make the material of the insulating component a more high-temperature resistant material, so that after the insulating component is processed at a temperature of 500°C to 1500°C, the insulation resistance between the metal strap and the metal housing can still be maintained within a range greater than or equal to A*B*1000 ohms. Therefore, under battery thermal runaway, the insulating component can also maintain a better insulation effect to improve the lap short circuit between the metal housing and the metal strap.

[0011] In some embodiments, after the insulating component is placed in an ambient temperature greater than or equal to 250°C and less than or equal to 500°C for 5 min, the insulation resistance between the metal strap and each metal housing is greater than or equal to A*B*5000 ohms. Such a design can keep the insulation resistance between the metal strap and the metal housing within a range greater than or equal to A*B*5000 ohms after the insulating component is processed at a temperature of 250°C to 500°C, further improving the high-temperature resistance performance requirements of the insulating component. Therefore, under battery thermal runaway, the insulating component can also maintain a better insulation effect to improve the lap short circuit between the metal housing and the metal strap.

[0012] In some embodiments, after the insulating component is placed at an ambient temperature greater than or equal to 500 °C and less than or equal to 1500 °C for 1 minute, the insulation resistance value between the metal strap and each metal housing is greater than or equal to A * B * 5000 ohms. With such a design, after the insulating component is treated at a temperature of 500 °C to 1500 °C, the insulation resistance value between the metal strap and the metal housing can still be maintained within the range greater than or equal to A * B * 5000 ohms, further improving the high-temperature resistance performance requirements of the insulating component. Therefore, under battery thermal runaway, the insulating component can also maintain a good insulation effect to improve the lap short circuit between the metal housing and the metal strap.

[0013] In some embodiments, A is greater than or equal to 3.2 V and less than or equal to 3.8 V; and / or, B is greater than or equal to 48 and less than or equal to 104. With such a design, common vehicle-mounted batteries can meet the requirement that the insulation resistance value between the metal strap and each metal housing is greater than or equal to A * B * 1000 ohms, so that insulation failure does not occur between the metal strap and the battery cell under battery thermal runaway.

[0014] In some embodiments, the positive electrode plate of the battery cell includes lithium-containing phosphate. After the insulating component is placed at an ambient temperature greater than or equal to 250 °C and less than or equal to 500 °C for 5 minutes, the insulation resistance value between the metal strap and each metal housing is greater than or equal to A * B * 1000 ohms. With such a design, when the positive electrode plate of the battery cell includes lithium-containing phosphate, after the insulating component is treated at a temperature of 250 °C to 500 °C, the insulation resistance value between the metal strap and the metal housing can still be maintained within the range greater than or equal to A * B * 1000 ohms. Therefore, under battery thermal runaway, the insulating component can also maintain a good insulation effect to improve the lap short circuit between the metal housing and the metal strap.

[0015] In some embodiments, after the insulating component is placed at an ambient temperature greater than or equal to 500 °C and less than or equal to 1500 °C for 1 minute, the insulation resistance value between the metal strap and each metal housing is greater than or equal to A * B * 1000 ohms. With such a design, after the insulating component is treated at a temperature of 500 °C to 1500 °C, the insulation resistance value between the metal strap and the metal housing can still be maintained within the range greater than or equal to A * B * 1000 ohms, further improving the high-temperature resistance performance requirements of the insulating component. Therefore, under battery thermal runaway, the insulating component can also maintain a good insulation effect to improve the lap short circuit between the metal housing and the metal strap.

[0016] In some embodiments, the insulating component is an insulating substrate, and the insulating substrate is attached to the metal strap; with such a design, the insulating component itself can be made of a high-temperature resistant material, eliminating the need to provide an additional high-temperature resistant structure (such as a high-temperature resistant coating) on the insulating substrate, thus simplifying the process;

[0017] Alternatively, the insulating component is an insulating tape, and the insulating tape is wound around the metal strap; with such a design, by directly winding a high-temperature resistant insulating tape on the metal strap, the use of the insulating substrate can be reduced, the cost can be lowered, and the insulating component can still maintain normal insulating effects in a high-temperature environment;

[0018] Alternatively, the insulating part is a coating, and the coating is applied to the strap; with such a design, a high-temperature resistant coating is directly selected and applied on the surface of the metal strap, the process is simple, and the battery cell and the metal strap can also maintain normal insulating effects in a high-temperature environment.

[0019] In some embodiments, the insulating component is an insulating tape, and the insulating tape includes a ceramic rubber and a fiber cloth arranged in a laminated manner. With such a design, the insulating tape can be a flexible material with a good insulation resistance value, making it more convenient to wind around the metal strap.

[0020] In some embodiments, when the insulating component includes a coating, the coating is a hydrophobic coating. Defining the apparent contact angle of the hydrophobic coating as θ1, then the condition is satisfied: 151° ≤ θ1 ≤ 153°. With such a design, by setting the coating as a hydrophobic coating and controlling the apparent contact angle θ1 of the hydrophobic coating between 151° and 153°, the problem of the electrolyte ejected during thermal runaway of the battery adhering and spreading on the surface of the insulating component or the metal strap can be improved, effectively preventing creepage caused by foreign matters adsorbed on the surface of the insulating component or the metal strap, and further enhancing the insulation reliability of the battery during thermal runaway.

[0021] In some embodiments, the coating is an oleophobic coating. Defining the apparent contact angle of the oleophobic coating as θ2, then the condition is satisfied: θ2 ≥ 90°. With such a design, by setting the coating as an oleophobic coating and making the apparent contact angle θ2 of the oleophobic coating greater than or equal to 90°, the problem of the electrolyte ejected during thermal runaway of the battery adhering and spreading on the surface of the insulating component or the metal strap can also be improved, effectively preventing creepage caused by foreign matters adsorbed on the surface of the insulating component or the metal strap, and further enhancing the insulation reliability of the battery during thermal runaway.

[0022] In some embodiments, the battery further includes an isolation layer, and the insulating component is disposed at least on the surface of the isolation layer close to the metal housing, and the isolation layer is attached to the metal strap. With such a design, the heat-resistant insulating component can be first disposed on the surface of the heat-intolerant isolation layer, and then the insulating component and the isolation layer are integrally disposed between the metal strap and the metal housing, so that insulation can be achieved between the metal strap and the metal housing through the insulating component and the isolation layer, thereby improving the insulation effect between the metal strap and the metal housing.

[0023] In some embodiments, the isolation layer is a sheet film plastic, phenolic film plastic, unsaturated polyester bulk film plastic or epoxy glass fiber board. With such a design, using sheet film plastic, phenolic film plastic, unsaturated polyester bulk film plastic, or epoxy glass fiber board as the isolation layer has a lower cost and better mechanical properties.

[0024] In some embodiments, the creepage distance between the metal strap and the metal housing is L, and the condition L≥8 mm is satisfied. With such a design, by making the creepage distance greater than or equal to 8 mm, there is a sufficient creepage distance between the metal housing and the metal strap, which can improve the insulation reliability of the battery during thermal runaway.

[0025] In some embodiments, the insulating component includes a first insulating member and a second insulating member; the first insulating member is located between the battery cell and the metal strap; the second insulating member is located between the battery cell and the metal strap, and the second insulating member is arranged crosswise with the first insulating member. With such a design, since the housing of the battery cell expands and deforms during thermal runaway of the battery, the curved housing will not contact the metal strap over the entire surface, and only need to be separated without melting. Therefore, by using the first insulating member and the second insulating member arranged crosswise to separate the metal housing and the metal strap, the material usage of the insulating component can be effectively reduced.

[0026] In some embodiments, there are multiple second insulating members, the multiple second insulating members are arranged at intervals and are all arranged crosswise with the first insulating member, and at least one second insulating member is correspondingly arranged for each battery cell. With such a design, insulation can be achieved between each battery cell and the metal strap through the first insulating member and at least one second insulating member, so as to further improve the insulation reliability of the insulating component for the battery cell and the metal strap.

[0027] In some embodiments, the included angle between the first insulating member and the second insulating member is 90 degrees. With such a design, the first insulating member and the second insulating member can be formed into a substantially cross-shaped structure, which can better separate the battery cell and the metal strap.

[0028] In some embodiments, it is defined that the battery cell has a height direction and a width direction. The first insulating member is arranged in a strip shape, and its length direction extends along the width direction of the battery cell. Such a design can effectively separate the battery cell from the metal strap while further reducing the material usage of the first insulating member.

[0029] In some embodiments, it is defined that the battery cell has a height direction and a width direction. The second insulating member is arranged in a strip shape, and its length direction extends along the height direction of the battery cell. Such a design can effectively separate the battery cell from the metal strap while further reducing the material usage of the second insulating member.

[0030] In some embodiments, the insulating component completely covers the surface of the metal strap facing the battery cell. With such a design, by covering the entire surface of the metal strap facing the battery cell with the insulating component, the housing of the battery cell can be better separated from the metal strap, and the problem of insulation failure between the battery cell and the metal strap can be better improved.

[0031] In some embodiments, it is defined that the battery cell has a height direction. In the height direction of the battery cell, both ends of the insulating component protrude from the metal strap. Such a design can extend the shortest distance value between the surface where the insulating component abuts against the battery cell and the surface of the metal strap, so that there is a sufficient creepage distance between the battery cell and the metal strap, and the insulation reliability of the battery during thermal runaway can be improved.

[0032] In some embodiments, it is defined that the metal strap has a front face facing the battery cell and a back face opposite to the front face. Both ends of the insulating component are bent towards the back face. Such a design can make the insulating component semi - surround or fully surround the metal strap, that is, it can be connected to the metal strap to improve the connection reliability between the insulating component and the metal strap, and at the same time, there is a sufficient creepage distance between the battery cell and the metal strap.

[0033] In some embodiments, both ends of the insulating component cover the back face of the metal strap, and both ends of the insulating component are partially overlapped or spaced apart. With such a design, when both ends of the insulating component are spaced apart, the insulating component can semi - surround the metal strap, which is more convenient for the assembly of the insulating component and the metal strap; when both ends of the insulating component are partially overlapped, the insulating component can fully surround the metal strap, which can improve the insulation effect of the insulating component.

[0034] In some embodiments, the battery further includes a heat shrink tube sleeved on the outside of the insulating component. With such a design, by sleeving the heat shrink tube on the outside of the insulating component, the insulating component and the metal strap can be fixed and the metal strap can be secondarily protected, effectively improving the insulation reliability of the insulating component.

[0035] The present application also proposes an electrical device including the above battery.

[0036] The present application also proposes an energy storage device including the above battery.

[0037] The above description is only an overview of the technical solution of the present application. In order to understand the technical means of the present application more clearly, it can be implemented according to the content of the specification. And in order to make other purposes, features and advantages of the present application more obvious and understandable, the specific embodiments of the present application are specifically described below. Description of the Drawings

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0039] Figure 1 It is an exploded view of a partial structure of an embodiment of the battery of the present application;

[0040] Figure 2 It is a side view of an embodiment of the battery of the present application;

[0041] Figure 3 It is a partial structure schematic diagram of another embodiment of the battery of the present application;

[0042] Figure 4 It is a side view of another embodiment of the battery of the present application;

[0043] Figure 5 It is a structure schematic diagram of another embodiment of the battery of the present application;

[0044] Figure 6 It is a partial structure schematic diagram of yet another embodiment of the battery of the present application;

[0045] Figure 7 It is a partial structure schematic diagram of still another embodiment of the battery of the present application;

[0046] Figure 8 It is a structure schematic diagram of the cooperation between the metal strap and the insulating substrate of the present application;

[0047] Figure 9Structural schematic diagram of the metal strap in this application in cooperation with the isolation layer and the coating;

[0048] Figure 10 Structural schematic diagram of the metal strap in this application in cooperation with the isolation layer and the insulating tape;

[0049] Figure 11 Structural schematic diagram of the metal strap in this application in cooperation with the insulating tape;

[0050] Figure 12 Structural schematic diagram of the metal strap in this application in cooperation with the coating;

[0051] Figure 13 Explosion structural schematic diagram of another embodiment of the battery in this application;

[0052] Figure 14 Structural schematic diagram of an embodiment of the electrical equipment in this application;

[0053] Figure 15 Structural schematic diagram when the insulating resistance test is carried out on this application using the insulating voltage withstand test device.

[0054] Explanation of the reference numerals in the drawings:

[0055] Label Name Label Name 1000 Vehicle 31 First Insulating Part 100 Battery 32 Second Insulating Part 11 Box 33 Insulating Board 10a First Part 34 Connection Section 10b Second Part 35 Limit Plate 10 Metal Strap 37 Insulating Tape 20 Battery Cell 38 Overlapping Part 21 Metal Shell 40 Heat Shrinkable Tube 30 Insulating Component 200 Controller 30a Insulating Base Material 300 Motor 30b Coating 2000 Insulating Withstand Voltage Test Device 30c Isolation Layer

[0056] The realization, functional features and advantages of the purpose of this utility model will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0057] The embodiments of the technical solutions of this application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solutions of this application more clearly, so they are only examples and cannot be used to limit the protection scope of this application.

[0058] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above accompanying drawings are intended to cover non-exclusive inclusion.

[0059] In the description of the embodiments of this application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of this application, "a plurality of" means more than two unless otherwise clearly and specifically defined.

[0060] Reference to "embodiments" in this document means that the specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment each time, nor are they independent or alternative embodiments mutually exclusive of other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0061] In the description of the embodiments of this application, the term "plurality" means two or more (including two). Similarly, "multiple groups" means two or more groups (including two groups), and "multiple pieces" means two or more pieces (including two pieces).

[0062] In the description of the embodiments of this application, the orientation or positional relationship indicated by technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the embodiments of this application and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the embodiments of this application.

[0063] In the description of the embodiments of this application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of this application can be understood according to specific circumstances.

[0064] Batteries mentioned in the art can be divided into primary batteries and rechargeable batteries according to whether they are rechargeable. Currently, common types of rechargeable batteries are: lead-acid batteries, nickel-metal hydride batteries, and lithium-ion batteries. Lithium-ion batteries are currently widely used in pure electric vehicles and hybrid vehicles. The capacity of lithium-ion batteries used for this purpose is relatively slightly lower, but they have a larger output and charging current, and also have a longer service life, but the cost is higher.

[0065] The batteries described in the embodiments of this application refer to rechargeable batteries. Hereinafter, lithium-ion batteries will be mainly used as an example to describe the embodiments disclosed in this application. It should be understood that the embodiments disclosed in this application are applicable to any other suitable type of rechargeable battery. The batteries mentioned in the embodiments disclosed in this application can be directly or indirectly applied to a suitable device to supply power to the device.

[0066] In the embodiments disclosed in this application, the battery refers to a single physical module including one or more battery cells to provide a predetermined voltage and capacity. A battery cell is the basic unit in a battery. Generally, according to the encapsulation method, it can be divided into: cylindrical battery cells, cuboid battery cells, and pouch battery cells. The following will mainly focus on cuboid battery cells. It should be understood that the embodiments described below are also applicable to cylindrical battery cells or pouch battery cells in some aspects.

[0067] A battery cell includes a positive electrode tab, a negative electrode tab, an electrolyte, and a separator. A lithium-ion battery cell mainly operates by the movement of lithium ions between the positive electrode tab and the negative electrode tab. In a cylindrical battery cell, the thin film structure of the three-layer material is wound into a cylindrical-shaped electrode assembly, while in a cuboid battery cell, the thin film structure is wound or stacked into an electrode assembly having a generally cuboid shape.

[0068] In a typical battery cell structure, a battery cell includes a housing, an electrode assembly, and an electrolyte. The electrode assembly is accommodated in the housing of the battery cell. The electrode assembly includes a positive electrode tab, a negative electrode tab, and a separator. The housing includes a bottom case and an end cap. The bottom case includes a receiving cavity formed by a plurality of walls and an opening. The end cap is disposed at the opening to close the receiving cavity. In addition to the electrode assembly, the receiving cavity also accommodates an electrolyte. The positive electrode tab and the negative electrode tab in the electrode assembly include tabs. To improve the problem of not fusing when passing a large current, the number of positive electrode tabs is multiple and stacked together, and the number of negative electrode tabs is multiple and stacked together. The tabs are electrically connected to electrode terminals located outside the battery cell through connecting members. The electrode terminals generally include a positive electrode terminal and a negative electrode terminal. For a cuboid battery cell, the electrode terminals are generally provided in the end cap portion. Multiple battery cells are connected in series and / or in parallel via the electrode terminals for various applications.

[0069] In some high-power application scenarios such as electric vehicles, the application of the battery includes three levels: battery cells, battery modules, and batteries. A battery module is formed by electrically connecting a certain number of battery cells together and placing them in a frame to protect the battery cells from external impacts, heat, vibrations, etc. A battery refers to the final state of the battery system installed in an electric vehicle. A battery generally includes a box for encapsulating one or more battery cells.

[0070] In recent years, new energy vehicles have witnessed a leapfrog development. In the field of electric vehicles, the power battery, as the power source of the electric vehicle, plays an irreplaceable and important role. The battery consists of a battery box and a plurality of battery cells accommodated in the box. Among them, the battery, as a core component of new energy vehicles, has relatively high requirements in terms of safety. Currently, the mechanical safety during the use of the power battery is one of the battery safety issues that consumers generally care about.

[0071] The battery provided in the embodiments of the present application can be the power source of an electrical device. The electrical device can be a mobile phone, a portable device, a laptop computer, a battery car, an electric vehicle, a ship, a spacecraft, an electric toy, and an electric tool, etc. For example, the spacecraft includes an airplane, a rocket, a space shuttle, and a spaceship, etc., and the electric toy includes a fixed or mobile electric toy, for example, a game console, an electric vehicle toy, an electric ship toy, and an electric airplane toy, etc., and the electric tool includes a metal cutting electric tool, a grinding electric tool, an assembly electric tool, and an electric tool for railways, for example, an electric drill, an electric grinding wheel, an electric wrench, an electric screwdriver, a hammer drill, an impact electric drill, a concrete vibrator, and an electric planer.

[0072] For the convenience of description in the following embodiments, a vehicle 1000 of an embodiment of the present application is taken as an example for illustration.

[0073] For example, Figure 9 is a schematic structural diagram of a vehicle 1000 according to some embodiments of the present application. The vehicle 1000 can be a fuel vehicle, a gas vehicle, or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle, etc. Inside the vehicle 1000, a battery 100, a controller 200, and a motor 300 can be arranged. The controller 200 is used to control the power supply of the battery 100 to the motor 300. For example, the battery 100 can be arranged at the bottom, the front end, or the rear end of the vehicle 1000. The battery 100 can be used for the power supply of the vehicle 1000. For example, the battery 100 can be used as the operating power source of the vehicle 1000 and be used for the circuit system of the vehicle 1000, for example, for the working power requirements during the start-up, navigation, and operation of the vehicle 1000. In another embodiment of the present application, the battery 100 can not only be used as the operating power source of the vehicle 1000 but also be used as the driving power source of the vehicle 1000 to replace or partially replace fuel or natural gas to provide driving power for the vehicle 1000.

[0074] For example, please refer to Figure 8 , Figure 5Exploded view of the structure of battery 100 provided by some embodiments of the present application. The battery 100 includes a box body 11 and battery cells 20, and the box body 11 has a receiving space for accommodating the battery cells 20. Among them, the box body 11 can adopt various structures. In some embodiments, the box body 11 can include a first part 10a and a second part 10b. The first part 10a and the second part 10b cover each other, and the first part 10a and the second part 10b jointly define a receiving space for accommodating the battery cells 20. The second part 10b can be a hollow structure with one end open, and the first part 10a can be a plate-like structure. The first part 10a covers the open side of the second part 10b so that the first part 10a and the second part 10b jointly define a receiving space; the first part 10a and the second part 10b can also both be hollow structures with one side open, and the open side of the first part 10a covers the open side of the second part 10b. Of course, the housing 11 formed by the first part 10a and the second part 10b can be of various shapes, such as a cylinder, a cuboid, etc.

[0075] In the battery 100, the number of battery cells 20 can be one or multiple. When the battery 100 has multiple battery cells 20, the multiple battery cells 20 can be connected in series, in parallel, or in a mixed connection. A mixed connection means that there are both series and parallel connections among the multiple battery cells 20. The multiple battery cells 20 can be directly connected in series, in parallel, or in a mixed connection together, and then the whole formed by the multiple battery cells 20 is accommodated in the box body 11; of course, the battery 100 can also be that multiple battery cells 20 are first connected in series, in parallel, or in a mixed connection to form a battery module form, and then multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole and are accommodated in the box body 11. The battery 100 can also include other structures. For example, the battery 100 can also include a busbar component for realizing electrical connection among the multiple battery cells 20, such as parallel connection, series connection, or mixed connection. Specifically, the busbar component can realize the electrical connection among the battery cells 20 by connecting the electrode terminals of the battery cells 20. Further, the busbar component can be fixed to the electrode terminals of the battery cells 20 by welding. The electrical energy of the multiple battery cells 20 can be further led out through a conductive mechanism passing through the box body 11. Optionally, the conductive mechanism can also belong to the busbar component.

[0076] Among them, each battery cell 20 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 20 can be in the shape of a cylinder, a flat body, a cuboid, or other shapes, etc.

[0077] When assembling the battery, metal straps are usually used to enhance the structural stability to fix the battery and absorb expansion.

[0078] In the related art, in order to protect the battery cells in a battery, an insulating coating treatment is usually performed on the surface of the metal strap and / or the surface of the housing of the battery cell. When the battery is in thermal runaway, the insulating coating is likely to form gaps, resulting in insulation failure between the metal strap and the battery cell.

[0079] In view of this, with reference to Figures 1 to 12 , the present application provides a battery 100, including a plurality of battery cells 20, a metal strap 10, and an insulating member 30; the plurality of battery cells 20 are arranged side by side, and each battery cell 20 includes a metal housing 21; the metal strap 10 bypasses the plurality of battery cells 20 for binding the plurality of battery cells 20; the insulating member 30 is connected to the battery cell 20 and / or the metal strap 10, and at least a part of the insulating member 30 is located between the battery cell 20 and the metal strap 10; the insulation resistance value between the metal strap 10 and each metal housing 21 is greater than or equal to A*B*1000 ohms, where A is the nominal voltage of the battery cell 20 in volts (V); B is the number of series-connected battery cells 20 in units of pieces.

[0080] In some embodiments, the battery 100 may further include two end plates. The plurality of battery cells 20 are arranged between the two end plates. The metal strap 10 may include two straps, and the two metal straps 10 are disposed on both sides of the battery cells 20 and connected to the two end plates, so that the two metal straps 10 and the two end plates enclose a fixing ring for binding the plurality of battery cells 20. Of course, in other embodiments, a single complete metal strap 10 may also be directly used to bypass the plurality of battery cells 20 to bind the plurality of battery cells 20.

[0081] In actual application, the insulating member 30 may be connected to the battery cell 20 or the metal strap 10 by means of snap connection, winding, bonding, etc., which is not specifically limited herein.

[0082] In actual application, the insulating member 30 may be a rigid member or a flexible member, as long as it can be connected to the battery cell 20 or the metal strap 10 to achieve the effect of insulation protection, which is not specifically limited herein.

[0083] Moreover, the insulating member 30 is made of an insulating material, and the material used is an insulating material that is heat-resistant and corrosion-resistant. For example, it may be a sheet film plastic, a phenolic film plastic, an unsaturated polyester bulk molding compound, an epoxy glass fiber board, etc., and it does not crack or break under a mechanical force of 7 KN.

[0084] Moreover, the cross-sectional shape of the insulating member 30 may be generally in a "C" shape, may also be generally in a "cross" shape, may also be generally in a "square" shape, a strip shape, etc.

[0085] Exemplarily, the metal strap 10 may specifically be a steel strap.

[0086] It should be noted that the nominal voltage of the battery cell 20 can be obtained from the specification sheet of the battery 100 or from the nameplate of the battery 100. The number of series-connected battery cells 20 can be obtained from the specification sheet of the battery 100 or from the nameplate of the battery 100.

[0087] It should be noted that the insulation performance between the metal strap 10 and the metal housing 21 can be tested according to the following steps of GBT 36276-2023:

[0088] a) Connect the positive electrode of the initialized charged battery 100, the externally exposed conductive part to the insulation withstand voltage test device 2000, and turn off the insulation resistance monitoring function of the battery 100;

[0089] b) Apply the test voltage for 5 minutes, record the insulation resistance value between the positive electrode and the externally exposed conductive part, the test voltage, and disconnect the connection between the insulation withstand voltage test device 2000 and the battery 100;

[0090] c) Connect the positive electrode of the battery 100, the externally exposed conductive part to the insulation withstand voltage test device 2000;

[0091] d) Apply the test voltage for 5 minutes, record the insulation resistance value between the negative electrode and the externally exposed conductive part, the test voltage, disconnect the connection between the insulation withstand voltage test device 2000 and the battery 100, and take out the test sample;

[0092] e) Calculate the ratio of the insulation resistance between the positive and negative electrodes and the externally exposed conductive part to the nominal voltage of the battery 100 respectively.

[0093] It should be noted that when testing the insulation performance, when an insulating film (such as a blue film) is attached to the surface of the battery cell, the blue film needs to be removed first before testing the insulation performance.

[0094] It should be noted that the used insulation withstand voltage test device 2000 should have sufficient accuracy and stability, and its accuracy should be higher than the accuracy of the measured index by one order of magnitude or the error should be less than 1 / 3 of the allowable error of the measured parameter.

[0095] Optionally, it can be ensured that the insulation resistance value between the metal strap 10 and the battery cell 20 is A*B*1000 ohms, A*B*1200 ohms, A*B*1300 ohms, A*B*1400 ohms, A*B*1500 ohms, etc.

[0096] In the technical solution of the embodiment of the present application, by providing an independent insulating component 30, connecting the insulating component 30 to the battery cell 20 or the metal strap 10, and making at least part of the insulating component 30 located between the battery cell 20 and the metal strap 10, the battery cell 20 can be protected; wherein, the insulation resistance value between the metal strap 10 and each metal housing 21 is greater than or equal to A*B*1000 ohms. Therefore, when the battery 100 is in thermal runaway, the insulation resistance value between the metal strap 10 and the metal housing 21 can also be maintained within the range greater than or equal to A*B*1000 ohms, so that insulation failure will not occur between the metal strap 10 and the battery cell 20 when the battery 100 undergoes thermal runaway.

[0097] In addition, since the insulating component 30 is an independent component, the insulating component 30 will not form a gap under the deformation and pulling of the metal housing 21 and the metal strap 10, so that the electrolyte will not adhere to the gap to form creepage, which can also improve the problem of easy insulation failure between the metal strap 10 and the battery cell 20 during thermal runaway.

[0098] In an embodiment of the present application, after the insulating component 30 is placed in an ambient temperature of greater than or equal to 250°C and less than or equal to 500°C for 5 minutes, the insulation resistance value between the metal strap 10 and each metal housing 21 is greater than or equal to A*B*1000 ohms.

[0099] Optionally, under conditions such as an ambient temperature of 250°C, 280°C, 300°C, 400°C, 500°C, etc., it can be ensured that the insulation resistance value between the metal strap 10 and the battery cell 20 is greater than or equal to A*B*1000 ohms.

[0100] Specifically, the insulation performance between the metal strap 10 and the metal housing 21 can be tested by the following method: Referring to Figure 15 ,

[0101] Place the insulating component 30 in an environment of greater than or equal to 250°C to 500°C for 5 minutes;

[0102] Place the insulating component 30 between the metal strap 10 and the battery housing 21 (if there is a blue film outside the metal housing 21, it needs to be torn off). Using the insulation withstanding voltage test device 2000 as the test equipment, connect the positive and negative poles of the insulation withstanding voltage test device 2000 to two aluminum blocks respectively, and apply a 500 - 1000V / DC voltage for 1 minute to measure the insulation resistance value.

[0103] With such a design, after the insulating component 30 is treated at a temperature of 250°C to 500°C, the insulation resistance between the metal strap 10 and the metal housing 21 can still be maintained within a range greater than or equal to A*B*1000 ohms.

[0104] In an embodiment of the present application, the insulating component 30 is phenolic film plastic, unsaturated polyester bulk molding compound, epoxy glass fiber, mica, ceramic coating, polytetrafluoroethylene, polyimide or aerogel. Among them, the ceramic coating can be alumina ceramic coating, zirconia ceramic coating, titanium oxide ceramic coating, silicone oxide ceramic, etc. With such a design, the insulating component 30 can be a high-temperature resistant material, so that after the insulating component 30 is treated at a temperature of 250°C to 500°C, the insulation resistance between the metal strap 10 and the metal housing 21 can still be maintained within a range greater than or equal to A*B*1000 ohms. Therefore, under the thermal runaway of the battery 100, the insulating component 30 can also maintain a better insulation effect to improve the lap short circuit between the metal housing 21 and the metal strap 10.

[0105] In some embodiments, the insulation performance between the metal strap 10 and the metal housing 21 can be tested according to the steps of GBT 36276-2023, and the results are shown in the following table:

[0106]

[0107] Table 1

[0108] It can be seen from the test results in Table 1 that:

[0109] When ethylene-vinyl acetate copolymer is used as the insulating component 30, under the conditions of a test ambient temperature of 250°C and a test time of 5 minutes, the ethylene-vinyl acetate copolymer melts, and there is a lap short circuit between the metal housing 21 and the metal strap 10. It can be known that under the thermal runaway of the battery 100, the insulation performance of the insulating component 30 is poor.

[0110] When polyethylene terephthalate is used as the insulating component 30, under the conditions of a test ambient temperature of 250°C and a test time of 5 minutes, the polyethylene terephthalate melts, and there is a lap short circuit between the metal housing 21 and the metal strap 10. It can be known that under the thermal runaway of the battery 100, the insulation performance of the insulating component 30 is poor.

[0111] When mica is used as the insulating component 30, under the conditions of a test ambient temperature of 450°C and a test time of 5 minutes, the insulation resistance between the metal strap 10 and the metal housing 21 can be 15.92 GΩ. It can be known that under the thermal runaway of the battery 100, the insulation performance of the insulating component 30 is good.

[0112] In an embodiment of the present application, after the insulating component 30 is placed in an ambient temperature of greater than or equal to 500°C and less than or equal to 1500°C for 1 minute, the insulation resistance value between the metal strap 10 and each metal housing 21 is greater than or equal to A*B*1000 ohms.

[0113] Optionally, under conditions such as an ambient temperature of 500°C, 600°C, 700°C, 800°C, 1000°C, 1200°C, 1500°C, etc., it is ensured that the insulation resistance value between the metal strap 10 and the battery cell 20 is greater than or equal to A*B*1000 ohms.

[0114] Specifically, the insulation performance between the metal strap 10 and the metal housing 21 can be tested by the following method: Referring to Figure 15 ,

[0115] Place the insulating component 30 in an environment of greater than or equal to 500°C to 1500°C for 1 minute;

[0116] Place the insulating component 30 between the metal strap 10 and the battery housing 21 (if there is a blue film outside the metal housing 21, it should be removed). Use the insulation withstand voltage test device 2000 as the test equipment. Connect the positive and negative poles of the insulation withstand voltage test device 2000 to two aluminum blocks respectively, and apply a 500 - 1000V / DC voltage for 1 minute to measure the insulation resistance value.

[0117] With such a design, after the insulating component 30 is processed at a temperature of 500°C to 1500°C, the insulation resistance value between the metal strap 10 and the metal housing 21 can still be maintained within the range of greater than or equal to A*B*1000 ohms, further improving the high-temperature resistance performance requirements of the insulating component 30. Therefore, under the thermal runaway of the battery 100, the insulating component 30 can also maintain a good insulation effect to improve the lap short circuit between the metal housing 21 and the metal strap 10.

[0118] In an embodiment of the present application, the insulating component 30 is mica or a ceramic coating.

[0119] Among them, the ceramic coating can be an alumina ceramic coating, a zirconia ceramic coating, a titanium oxide ceramic coating, a silicone oxide ceramic, etc.

[0120] With such a design, the material of the insulating component 30 can be a material with better high-temperature resistance. To meet the requirement that after the insulating component 30 is processed at a temperature of 500°C to 1500°C, the insulation resistance value between the metal strap 10 and the metal housing 21 can still be maintained within the range of greater than or equal to A*B*1000 ohms. Therefore, under the thermal runaway of the battery 100, the insulating component 30 can also maintain a good insulation effect to improve the lap short circuit between the metal housing 21 and the metal strap 10.

[0121] In an embodiment of the present application, after the insulating component 30 is placed in an ambient temperature of greater than or equal to 250°C and less than or equal to 500°C for 5 minutes, the insulation resistance value between the metal strap 10 and each metal housing 21 is greater than or equal to A*B*5000 ohms.

[0122] Optionally, under conditions such as an ambient temperature of 250°C, 280°C, 300°C, 400°C, 500°C, etc., it is ensured that the insulation resistance value between the metal strap 10 and the battery cell 20 is greater than or equal to A*B*5000 ohms.

[0123] Specifically, the insulation performance between the metal strap 10 and the metal housing 21 can be tested by the following method: Referring to Figure 15 ,

[0124] Place the insulating component 30 in an environment of greater than or equal to 250°C to 500°C for 5 minutes;

[0125] Place the insulating component 30 between the metal strap 10 and the battery housing 21 (if there is a blue film outside the metal housing 21, it should be removed). Use the insulation withstand voltage test device 2000 as the test equipment. Connect the positive and negative poles of the insulation withstand voltage test device 2000 to two aluminum blocks respectively, and apply a 500 - 1000V / DC voltage for 1 minute to measure the insulation resistance value.

[0126] In this embodiment, the insulating component 30 is at least one of phenolic film plastic, unsaturated polyester bulk molding compound, epoxy glass fiber, mica, ceramic coating, polytetrafluoroethylene, polyimide, aerogel. This can make the insulating component 30 a high-temperature resistant material, so that after the insulating component 30 is processed at a temperature of 250°C to 500°C, the insulation resistance value between the metal strap 10 and the metal housing 21 can still be maintained within the range of greater than or equal to A*B*5000 ohms.

[0127] With such a design, after the insulating component 30 is processed at a temperature of 250°C to 500°C, the insulation resistance value between the metal strap 10 and the metal housing 21 can still be maintained within the range of greater than or equal to A*B*5000 ohms, further improving the high-temperature resistance performance requirements of the insulating component 30. Therefore, under the thermal runaway of the battery 100, the insulating component 30 can still maintain a good insulation effect to improve the lap short circuit between the metal housing 21 and the metal strap 10.

[0128] In an embodiment of the present application, after the insulating component 30 is placed in an ambient temperature greater than or equal to 500°C and less than or equal to 1500°C for 1 minute, the insulation resistance value between the metal strap 10 and each metal housing 21 is greater than or equal to A*B*5000 ohms.

[0129] Optionally, under conditions such as an ambient temperature of 500°C, 600°C, 700°C, 800°C, 1000°C, 1200°C, 1500°C, etc., it is ensured that the insulation resistance value between the metal strap 10 and the battery cell 20 is greater than or equal to A*B*1000 ohms.

[0130] Specifically, the insulation performance between the metal strap 10 and the metal housing 21 can be tested by the following method: Referring to Figure 15 ,

[0131] Place the insulating component 30 in an environment greater than or equal to 500°C to 1500°C for 1 minute;

[0132] Place the insulating component 30 between the metal strap 10 and the battery housing 21 (if there is a blue film outside the metal housing 21, it should be torn off). Use the insulation withstand voltage test device 2000 as the test equipment. Connect the positive and negative poles of the insulation withstand voltage test device 2000 to two aluminum blocks respectively, and apply a 500 - 1000V / DC voltage for 1 minute to measure the insulation resistance value.

[0133] With such a design, after the insulating component 30 is processed at a temperature of 500°C to 1500°C, the insulation resistance value between the metal strap 10 and the metal housing 21 can still be maintained within a range greater than or equal to A*B*5000 ohms, further improving the high-temperature resistance performance requirements of the insulating component 30. Therefore, under the thermal runaway of the battery 100, the insulating component 30 can also maintain a better insulation effect to improve the lap short circuit between the metal housing 21 and the metal strap 10.

[0134] In an embodiment of the present application, A is greater than or equal to 3.2V and less than or equal to 3.8V; and / or, B is greater than or equal to 48 and less than or equal to 104.

[0135] Optionally, A can be 3.2V, 3.3V, 3.4V, 3.5V, 3.6V, 3.7V, 3.8V, etc.; B can be 48, 56, 74, 80, 88, 104, etc.

[0136] Such a design enables the commonly used vehicle-mounted battery 100 to ensure that the insulation resistance value between the metal strap 10 and each metal housing 21 is greater than or equal to A * B * 1000 ohms, so that there will be no insulation failure problem between the metal strap 10 and the battery cell 20 when the battery 100 undergoes thermal runaway. Therefore, under the thermal runaway of the battery 100, the insulation component 30 can also maintain a better insulation effect to improve the lap short circuit between the metal housing 21 and the metal strap 10.

[0137] In an embodiment of the present application, the positive electrode plate of the battery cell 20 includes lithium-containing phosphate. After the insulation component 30 is placed in an ambient temperature of greater than or equal to 250 °C and less than or equal to 500 °C for 5 minutes, the insulation resistance value between the metal strap 10 and each metal housing 21 is greater than or equal to A * B * 1000 ohms.

[0138] Optionally, under conditions such as an ambient temperature of 250 °C, 280 °C, 300 °C, 400 °C, 500 °C, etc., it can be ensured that the insulation resistance value between the metal strap 10 and the battery cell 20 is greater than or equal to A * B * 1000 ohms.

[0139] With such a design, when the positive electrode plate of the battery cell 20 includes lithium-containing phosphate, after the insulation component 30 is processed at a temperature of 250 °C to 500 °C, the insulation resistance value between the metal strap 10 and the metal housing 21 can still be maintained within a range greater than or equal to A * B * 1000 ohms.

[0140] In an embodiment of the present application, after the insulation component 30 is placed in an ambient temperature of greater than or equal to 500 °C and less than or equal to 1500 °C for 1 minute, the insulation resistance value between the metal strap 10 and each metal housing 21 is greater than or equal to A * B * 1000 ohms.

[0141] Optionally, under conditions such as an ambient temperature of 500 °C, 600 °C, 700 °C, 800 °C, 1000 °C, 1200 °C, 1500 °C, etc., it can be ensured that the insulation resistance value between the metal strap 10 and the metal housing 21 is greater than or equal to A * B * 1000 ohms.

[0142] With such a design, after the insulation component 30 is processed at a temperature of 500 °C to 1500 °C, the insulation resistance value between the metal strap 10 and the metal housing 21 can still be maintained within a range greater than or equal to A * B * 1000 ohms, further improving the high-temperature resistance performance requirements of the insulation component 30. Therefore, under the thermal runaway of the battery 100, the insulation component 30 can also maintain a better insulation effect to improve the lap short circuit between the metal housing 21 and the metal strap 10.

[0143] In an embodiment of the present application, the insulating component 30 is an insulating base material 30a, an insulating tape 37, or a coating 30b;

[0144] With reference to Figure 6 and Figure 7 , the insulating component 30 is an insulating tape 37, and the insulating tape 37 is wound around the metal binding tape 10; with such a design, by directly winding a high-temperature-resistant insulating tape 37 on the metal binding tape 10, the use of the insulating base material 30a can be reduced, the cost can be lowered, and the insulating component 30 can also maintain a normal insulating effect in a high-temperature environment;

[0145] Alternatively, with reference to Figures 8 to 10 , the insulating component 30 is an insulating base material 30a, and the insulating base material 30a is attached to the metal binding tape 10; with such a design, the insulating base material 30a of the insulating component 30 itself can be a high-temperature-resistant material, and there is no need to provide an additional high-temperature-resistant structure (such as a high-temperature-resistant coating) on the insulating base material 30a, which simplifies the process;

[0146] Alternatively, with reference to Figure 12 , the insulating component 30 is a coating 30b, and the coating 30b is coated on the metal binding tape 10; with such a design, a high-temperature-resistant coating 30b is directly selected to be coated on the surface of the metal binding tape 10, the process is simple, and the battery cell 20 and the metal binding tape 10 can also maintain a normal insulating effect in a high-temperature environment. It should be noted that the coating 30b can be made of materials such as alumina ceramic coating, zirconia ceramic coating, titanium oxide ceramic coating, silicone oxide ceramic, polytetrafluoroethylene, or polyimide.

[0147] In some embodiments, in order to facilitate the winding of the insulating tape 37, the insulating tape 37 can be made of a flexible material. For example, the insulating tape 37 can be prepared from a fiber cloth and ceramic rubber, or it can be a ceramic fiber cloth. It should be noted that the ceramic fiber cloth is made by adding a certain proportion of organic fibers to ceramic fibers, lining with glass filaments to spin into yarn, and then weaving into cloth to obtain the ceramic fiber cloth.

[0148] Optionally, the insulating component 30 is an insulating tape 37, and the insulating tape 37 can include a ceramic rubber and a fiber cloth arranged in a laminated manner. Exemplarily, the ceramic rubber can be silicone rubber.

[0149] With such a design, the insulating tape 37 can be a flexible material with a good insulation resistance value, making the insulating tape 37 more convenient to wind around the metal binding tape 10.

[0150] In the actual application process, the extending direction of the metal binding tape 10 is defined as the length direction of the metal binding tape 10, and the winding direction of the insulating tape 37 can be the same as the length direction of the metal binding tape 10, perpendicular to the length direction of the metal binding tape 10, or set at an acute angle or an obtuse angle with the length direction of the metal binding tape 10.

[0151] In an embodiment of the present application, with reference to Figure 10 , the extending direction of the metal strap 10 is defined as the length direction of the metal strap 10, and the winding direction of the insulating tape 37 is set at an angle with the length direction of the metal strap 10.

[0152] It should be noted that the length direction of the metal strap 10 is defined as the X-axis direction of the metal strap 10. Specifically, the insulating tape 37 can be wound obliquely at an angle of 45° along the X-axis direction of the metal strap 10, or can be wound obliquely at an angle of 60° along the X-axis direction of the metal strap 10, or can be wound obliquely at an angle of 15° along the X-axis direction of the metal strap 10, and so on. Of course, in some embodiments, the insulating tape 37 can be wound obliquely at an angle of 45° along the X-axis direction of the metal strap 10, which can improve the winding stability of the insulating tape 37.

[0153] In the actual application process, the insulating tape 37 can be wound around a part of the surface of the metal strap 10, or can be wound around the entire surface of the metal strap 10 to completely cover the surface of the metal strap 10.

[0154] In an embodiment of the present application, with reference to Figure 11 , the insulating tape 37 is adhered to the metal strap 10.

[0155] In the actual application process, a high-temperature resistant glue can be used to adhere the insulating tape 37 to the surface of the metal strap 10. Among them, the high-temperature resistant glue can be phenolic resin glue, urea-formaldehyde resin glue, heat-resistant epoxy glue, polyimide glue, and so on.

[0156] With such a design, by adhering the insulating tape 37 to the metal strap 10, the connection strength between the insulating tape 37 and the metal strap 10 can be improved.

[0157] In an embodiment of the present application, with reference to Figure 9 and Figure 12 , when the insulating component 30 includes the coating 30b, the coating 30b is a hydrophobic coating. Defining the apparent contact angle of the hydrophobic coating as θ1, then the condition is satisfied: 151° ≤ θ1 ≤ 153°. Optionally, the apparent contact angle θ1 of the hydrophobic coating can be 151°, 151.5°, 152°, 152.5°, 153°, and so on.

[0158] It should be noted that the apparent contact angle of the hydrophobic coating refers to the contact angle between water and the coating 30b under static conditions.

[0159] With such a design, by setting the coating 30b as a hydrophobic coating and controlling the apparent contact angle θ1 of the hydrophobic coating between 151° and 153°, the problem that the electrolyte ejected during thermal runaway of the battery 100 adheres and spreads on the surface of the insulating component 30 or the metal strap 10 can be improved, and the creepage caused by foreign matters adsorbed on the surface of the insulating component 30 or the metal strap 10 can be effectively prevented, and the insulation reliability of the battery 100 during thermal runaway can be further improved.

[0160] In an embodiment of the present application, with reference to Figure 9 and Figure 12 , the coating 30b is an oleophobic coating, and the apparent contact angle of the oleophobic coating is defined as θ2, then the condition is satisfied: θ2≥90°. Optionally, the apparent contact angle of the oleophobic coating is θ2, which can be 90°, 93°, 96°, 100°, 110°, etc.

[0161] It should be noted that the apparent contact angle of the oleophobic coating refers to the contact angle between the oil liquid and the coating 30b under static conditions.

[0162] With such a design, by setting the coating 30b as an oleophobic coating and making the apparent contact angle θ2 of the oleophobic coating greater than or equal to 90°, the problem that the electrolyte ejected during thermal runaway of the battery 100 adheres and spreads on the surface of the insulating component 30 or the metal strap 10 can also be improved, and the creepage caused by foreign matters adsorbed on the surface of the insulating component 30 or the metal strap 10 can be effectively prevented, and the insulation reliability of the battery 100 during thermal runaway can be further improved.

[0163] In an embodiment of the present application, the battery 100 further includes an isolation layer 30c, and the insulating component 30 is at least provided on the surface of the isolation layer 30c close to the metal housing 21, and the isolation layer 30c is attached to the metal strap 10.

[0164] In the actual application process, the insulating component 30 can completely wrap the surface of the isolation layer 30c, or only wrap the surface of the isolation layer 30c close to the metal housing 21.

[0165] With such a design, the high-temperature-resistant insulating component 30 can be first set on the surface of the non-high-temperature-resistant isolation layer 30c, and then the insulating component 30 and the isolation layer 30c are integrally set between the metal strap 10 and the metal housing 21, so that insulation between the metal strap 10 and the metal housing 21 can be achieved through the insulating component 30 and the isolation layer 30c, and the insulation effect between the metal strap 10 and the metal housing 21 can be improved.

[0166] In an embodiment of the present application, the isolation layer 30c is a sheet-like film plastic, phenolic film plastic, unsaturated polyester bulk film plastic or epoxy glass fiber board.

[0167] In such a design, one of sheet film plastics, phenolic film plastics, unsaturated polyester bulk molding compounds, and epoxy glass fiber boards is used as the isolation layer 30c, which has a lower cost and better mechanical properties.

[0168] In an embodiment of the present application, with reference to Figures 1 to 7 , the creepage distance between the metal strap 10 and the metal housing 21 is L, and the condition L≥8 mm is satisfied. Optionally, the creepage distance between the metal housing 21 and the metal strap 10 can be 8 mm, 8.5 mm, 8.8 mm, 9 mm, 9.5 mm, etc.

[0169] In such a design, by making the creepage distance greater than or equal to 8 mm, there is a sufficient creepage distance between the battery cell 20 and the metal strap 10, which can improve the insulation reliability of the battery 100 during thermal runaway.

[0170] In an embodiment of the present application, with reference to Figure 1 、 Figure 2 , the insulating component 30 includes a first insulating member 31 and a second insulating member 32; the first insulating member 31 is located between the battery cell 20 and the metal strap 10, the second insulating member 32 is located between the battery cell 20 and the metal strap 10, and the second insulating member 32 is arranged crosswise with the first insulating member 31.

[0171] In this embodiment, the thicknesses of the first insulating member 31 and the second insulating member 32 are the same, and the thickness of the first insulating member 31 or the thickness of the second insulating member 32 constitutes the creepage distance between the battery cell 20 and the metal strap 10.

[0172] It should be noted that with reference to Figure 2 , defining the thickness of the first insulating component 31 or the second insulating member 32 as A', then the creepage distance L between the battery cell 20 and the metal strap 10 = A', that is, A'≥8 mm. Optionally, A' can be 8 mm, 8.5 mm, 8.8 mm, 9 mm, 9.5 mm, etc.

[0173] Moreover, the thickness of the first insulating member 31 refers to the distance between the surface of the first insulating member 31 in contact with the metal strap 10 and the surface in contact with the battery cell 20. Similarly, the thickness of the second insulating member 32 refers to the distance between the surface of the second insulating member 32 in contact with the metal strap 10 and the surface in contact with the battery cell 20.

[0174] In the actual application process, the distances from the two ends of the second insulating member 32 to the metal strap 10 can be equal or unequal.

[0175] In some embodiments, the first insulating member 31 and the second insulating member 32 may be integrally formed structures, which can not only enhance the strength of the insulating component 30, but also simplify the manufacturing process of the insulating component 30.

[0176] In actual application, both the first insulating member 31 and the second insulating member 32 may be structures in the shape of a sheet, a rod, a plate, etc.

[0177] With such a design, when the battery 100 is in thermal runaway, the housing of the battery cell 20 expands and deforms. The curved housing 20 does not come into contact with the metal strap 10 over the entire surface. It only needs to be separated and not melted. Therefore, by using the first insulating member 31 and the second insulating member 32 arranged crosswise to separate the metal housing 21 and the metal strap 10, the material usage of the insulating component 30 can be effectively reduced.

[0178] In an embodiment of the present application, with reference to Figure 1 、 Figure 2 , there are multiple second insulating members 32. The multiple second insulating members 32 are arranged at intervals and are all arranged crosswise with the first insulating member 31. Each battery cell 20 is correspondingly provided with at least one second insulating member 32. With such a design, each battery cell 20 can be separated from the metal strap 10 by the first insulating member 31 and at least one second insulating member 32, so as to further improve the insulation reliability of the insulating component 30 for the battery cell 20 and the metal strap 10.

[0179] In an embodiment of the present application, with reference to Figure 1 、 Figure 2 , the included angle between the first insulating member 31 and the second insulating member 32 is 90 degrees. With such a design, the first insulating member 31 and the second insulating member 32 can be formed into a substantially cross-shaped structure, which can better separate the battery cell 20 and the metal strap 10.

[0180] In an embodiment of the present application, with reference to Figure 1 、 Figure 2 , it is defined that the battery cell 20 has a height direction a and a width direction b. The first insulating member 31 is arranged in a strip shape, and its length direction c extends along the width direction b of the battery cell 20. With such a design, while the first insulating member 31 can effectively separate the battery cell 20 and the metal strap 10, the material usage of the first insulating member 31 can be further reduced.

[0181] It should be noted that the height direction a of the battery cell 20 refers to: the vertical direction when the battery cell 20 is placed in an electrical device. The width direction b of the battery cell 20 refers to: the arrangement direction of multiple battery cells 20.

[0182] The length direction c of the first insulating member 31 refers to the longest direction among the three directions of the first insulating member 31.

[0183] In an embodiment of the present application, with reference to Figure 1 , Figure 2 , it is defined that the battery cell 20 has a height direction a and a width direction b. The second insulating member 32 is arranged in a strip shape, and its length direction d extends along the height direction a of the battery cell 20. Such a design can effectively separate the battery cell 20 and the metal strap 10 by the second insulating member 32, and at the same time, can further reduce the material usage of the second insulating member 32.

[0184] It should be noted that the length direction d of the second insulating member 32 refers to the longest direction among the three directions of the second insulating member 32.

[0185] In an embodiment of the present application, with reference to Figure 1 , Figure 2 , the distances from both ends of the second insulating member 32 to the metal strap 10 are equal. That is, the middle parts of the first insulating member 31 and the second insulating member 32 are cross-connected.

[0186] Such a design can better separate the metal strap 10 and the battery cell 20 by the first insulating member 31 and the second insulating member 32, so as to further improve the insulation reliability of the insulating component 30 for the battery cell 20 and the metal strap 10.

[0187] In an embodiment of the present application, with reference to Figure 1 , Figure 2 , the first insulating member 31 corresponds to the central axis of the metal strap 10.

[0188] It should be noted that the first insulating member 31 in this embodiment is an axisymmetric structure. For example, it can be an axisymmetric structure in the shape of a sheet, a rod, a plate, etc. And the metal strap 10 in this embodiment is also an axisymmetric structure.

[0189] In the actual application process, the width of the first insulating member 31 can be the same as the width of the metal strap 10, can also be greater than the width of the metal strap 10, or can be less than the width of the metal strap 10, as long as it can separate the housing of the battery cell 20 from the metal strap 10, and no specific limitation is made here.

[0190] Such a design can more stably separate the housing of the battery cell 20 from the metal strap 10, so as to improve the insulation reliability of the insulating component 30 for the battery cell 20 and the metal strap 10.

[0191] In an embodiment of the present application, with reference to Figure 1 , Figure 2, each second insulating member 32 corresponds to the central axis of a battery cell 20.

[0192] It should be noted that the second insulating member 32 in this embodiment has an axisymmetric structure. For example, it can be an axisymmetric structure in the shape of a sheet, a rod, a plate, etc. Moreover, the metal strap 10 in this embodiment also has an axisymmetric structure.

[0193] In the actual application process, the width of the second insulating member 32 can be the same as the width of the battery cell 20, can also be greater than the width of the battery cell 20, or can also be less than the width of the battery cell 20, as long as it can separate the housing of the battery cell 20 from the metal strap 10, and no specific limitation is made here.

[0194] It should be noted that the width of the second insulating member 32 depends on the diameter of the terminal post in the corresponding battery cell 20.

[0195] Such a design can also more stably separate the housing of the battery cell 20 from the metal strap 10, so as to improve the insulation reliability of the insulating component 30 for the battery cell 20 and the metal strap 10.

[0196] In another embodiment of the present application, with reference to Figures 3 to 5 , Figure 7 , the insulating component 30 completely covers the surface of the metal strap 10 facing the battery cell 20.

[0197] In the actual application process, the end of the insulating component 30 can protrude from the end of the metal strap 10, or can be flush with the end of the metal strap 10.

[0198] Such a design can better separate the housing of the battery cell 20 from the metal strap 10 by covering the entire surface of the metal strap 10 facing the battery cell 20 with the insulating component 30, and can better improve the problem of insulation failure between the battery cell 20 and the metal strap 10.

[0199] In another embodiment of the present application, with reference to Figures 3 to 5 , Figure 7 , it is defined that the battery cell 20 has a height direction a, and on the height direction a of the battery cell 20, both ends of the insulating component 30 protrude from the metal strap 10.

[0200] It should be noted that the length by which the end of the insulating component 30 protrudes from the metal strap 10 determines the creepage distance between the battery cell 20 and the metal strap 10.

[0201] Such a design can extend the minimum distance value between the surface of the insulating component 30 in contact with the battery cell 20 and the surface of the metal strap 10, so that there is a sufficient creepage distance between the battery cell 20 and the metal strap 10, which can improve the insulation reliability of the battery 100 during thermal runaway.

[0202] In some embodiments, the portion of the end of the insulating component 30 protruding from the metal strap 10 may be arranged to extend along the height direction a of the battery cell 20.

[0203] In actual application, the insulating component 30 may be a separate block structure, and one insulating component 30 is provided corresponding to each battery cell 20; alternatively, the insulating component 30 may also be a long strip plate structure, and each battery cell 20 corresponds to different positions of the insulating component 30.

[0204] In this embodiment, with reference to Figure 4 , define the thickness of the insulating component 30 as A", and the length of the end of the insulating component 30 protruding from the metal strap 10 as B". Then the creepage distance L between the battery cell 20 and the metal strap 10 is L = A" + B", that is, A" + B" is greater than or equal to 8 mm. A" + B" can be 8 mm, 8.5 mm, 8.8 mm, 9 mm, 9.5 mm, etc.

[0205] In some embodiments, with reference to Figures 3 to 5 , define that the metal strap 10 has a front face facing the battery cell 20 and a back face opposite to the front face, and both ends of the insulating component 30 are bent towards the back face.

[0206] In this embodiment, the insulating component 30 may include an insulating plate 33, two connecting sections 34, and two limiting plates 35; the insulating plate 33 is located between the battery cell 20 and the metal strap 10, that is, the insulating plate 33 is located on the front face of the metal strap 10; the two connecting sections 34 are respectively connected to the opposite side edges of the insulating plate 33 and are respectively in contact with the opposite side edges of the metal strap 10; each limiting plate 35 is connected to a side edge of a connecting section 34 far from the insulating plate 33, the limiting plate 35 is located on the back face of the metal strap 10, and the limiting plate 35 is arranged opposite to the insulating plate 33; wherein, the shortest path on the outer surface of the connecting section 34, the length of the limiting plate 35, and the thickness of the limiting plate 35 constitute the creepage distance between the battery cell 20 and the metal strap 10.

[0207] In this embodiment, the insulating plate 33, the connecting section 34, and the limiting plate 35 are all insulating structures, so that the insulating component 30 has good insulation reliability.

[0208] It should be noted that with reference to Figure 4, define the shortest path connecting the outer surface of the connecting section 34 as A, the length of the limiting plate 35 as B, and the thickness of the limiting plate 35 as C. Then the creepage distance L between the battery cell 20 and the metal strap 10 is L = A + B + C. That is, A + B + C is greater than or equal to 8 mm. A + B + C can be 8 mm, 8.5 mm, 8.8 mm, 9 mm, 9.5 mm, etc.

[0209] Moreover, the shortest path of the outer surface of the connecting section 34 refers to: the shortest path between the side of the connecting section 34 that abuts against the battery cell 20 and the side that abuts against the battery cell 20. The length of the limiting plate 35 refers to: the distance between the top end and the bottom end of the limiting plate 35 in the height direction a of the battery cell 20. The width of the limiting plate 35 refers to: the distance between the side of the limiting plate 35 close to the metal strap 10 and the side far from the metal strap 10.

[0210] In some embodiments, the insulating plate 33, the two connecting sections 34, and the two limiting plates 35 can be of an integrally formed structure, which can not only improve the strength of the insulating component 30 but also simplify the preparation process of the insulating component 30.

[0211] In actual application, the connecting section 34 can be a straight connecting section 34, an arc-shaped connecting section 34, or a connecting section 34 with a wavy shape or other shapes.

[0212] Such a design can make the insulating component 30 semi-surround or fully surround the metal strap 10, and can be connected to the metal strap 10 to improve the connection reliability between the insulating component 30 and the metal strap 10, and at the same time ensure that there is a sufficient creepage distance between the battery cell 20 and the metal strap 10.

[0213] In an embodiment of the present application, with reference to Figures 3 to 5 , the connecting section 34 is an arc-shaped connecting section 34.

[0214] In some embodiments, an arc-shaped connecting section 34 can be formed between the insulating plate 33 and the limiting plate 35 by bending.

[0215] Such a design can reduce the stress at the connection between the connecting section 34 and the insulating plate 33 and the limiting plate 35, so as to improve the connection reliability between the connecting section 34 and the insulating plate 33 and the limiting plate 35.

[0216] In another embodiment of the present application, both ends of the insulating component 30 cover the back surface of the metal strap 10, and both ends of the insulating component 30 partially overlap or are spaced apart.

[0217] In some embodiments, with reference to Figure 4 、 Figure 5, the two end portions of the insulating member 30 are spaced apart, that is, the insulating member 30 can be made to be substantially in a "C" shape so that the insulating member 30 semi - surrounds the metal strap 10. In this way, it is more convenient to assemble the insulating member 30 and the metal strap 10.

[0218] In some other embodiments, with reference to Figure 7 , the two end portions of the insulating member 30 partially overlap, so that an overlapping portion 38 is formed at the two end portions of the insulating member 30, and the insulating member 30 can completely surround the metal strap 10. In this way, the insulation effect of the insulating member 30 can be improved.

[0219] It should be noted that the two end portions of the insulating member 30 are the end portions of the two limiting plates 35. And the overlapping portion 38 formed at the two end portions of the insulating member 30 is the overlapping part of the two limiting plates 35.

[0220] In some embodiments, in the height direction a of the battery cell 20, the overlapping portion 38 formed at the two end portions of the insulating member 30 can overlap by 5 mm. Of course, it can also overlap by 3 mm, 4 mm, 6 mm, 7 mm, and so on.

[0221] In this embodiment, the overlapping length of the overlapping portion 38 is L', with reference to Figure 7 .

[0222] In an embodiment of the present application, with reference to Figure 6 、 Figure 7 , the battery 100 further includes a heat - shrinkable tube 40, and the heat - shrinkable tube 40 is sleeved on the outside of the insulating member 30.

[0223] It should be noted that the heat - shrinkable tube 40 refers to a structure that can shrink at a preset temperature. For example, the material of the heat - shrinkable tube 40 can be polytetrafluoroethylene.

[0224] With such a design, by sleeving the heat - shrinkable tube 40 on the outside of the insulating member 30, the insulating member 30 and the metal strap 10 can be fixed and the metal strap 10 can be secondarily protected, effectively improving the insulation reliability of the insulating member 30.

[0225] The present application also proposes an electrical device. The electrical device includes the above - mentioned battery 100, and the specific structure of the battery 100 refers to the above - mentioned embodiments. Since this electrical device adopts all the technical solutions of the above - mentioned all embodiments, it has at least all the beneficial effects brought by the technical solutions of the above - mentioned embodiments, which will not be elaborated here one by one.

[0226] According to some embodiments of the present application, the present application provides a battery 100, which includes a plurality of battery cells 20, a metal strap 10, and an insulating member 30; the plurality of battery cells 20 are arranged side by side; the metal strap 10 bypasses the plurality of battery cells 20 and is used to bind the plurality of battery cells 20; the insulating member 30 is connected to the battery cell 20 and / or the metal strap 10, and at least part of the insulating member 30 is located between the battery cell 20 and the metal strap 10; under the condition that the melting temperature is greater than or equal to 300 °C and less than or equal to 1500 °C, the insulation resistance value between the metal strap 10 and the battery cell 20 is greater than or equal to 1 megaohm.

[0227] In the technical solution of the embodiment of the present application, by providing an independent insulating member 30, connecting the insulating member 30 to the battery cell 20 or the metal strap 10, and making at least part of the insulating member 30 located between the battery cell 20 and the metal strap 10, it can play a role in protecting the battery cell 20; among them, under the condition that the melting temperature is greater than or equal to 300 °C and less than or equal to 1500 °C, the insulation resistance value between the metal strap 10 and the battery cell 20 is greater than or equal to 1 megaohm. Therefore, when the battery 100 is in thermal runaway, the insulation resistance value between the metal strap 10 and the battery cell 20 can also be maintained within the range of greater than or equal to 1 megaohm, so that the insulation failure problem will not occur between the metal strap 10 and the battery cell 20 when the battery 100 undergoes thermal runaway.

[0228] The present application also proposes an energy storage device, which includes the above-mentioned battery 100. The specific structure of the battery 100 refers to the above-mentioned embodiments. Since this energy storage device adopts all the technical solutions of the above-mentioned all embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be elaborated here one by one.

[0229] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention under the inventive concept of the present invention, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. A battery, characterized in that: include: A plurality of battery cells, wherein the plurality of battery cells are arranged side by side, and each of the battery cells comprises a metal shell; A metal binding band, which is passed around the battery cells and is used to bind the battery cells together; an insulating component, wherein the insulating component is at least partially located between the battery cell and the metal binding band; The insulation resistance between the metal binding band and each of the metal shells is greater than or equal to A*B*1000 ohms, where A is the nominal voltage of the battery cell, in V; and B is the number of battery cells connected in series, in pieces.

2. The battery according to claim 1, characterized in that After the insulating component is placed at an ambient temperature greater than or equal to 250° C. and less than or equal to 500° C. for 5 minutes, the insulation resistance between the metal binding band and each of the metal shells is greater than or equal to A*B*1000 ohms.

3. The battery according to claim 2, characterized in that The insulating component is phenolic film plastic, unsaturated polyester bulk film plastic, epoxy glass fiber, mica, ceramic coating, polytetrafluoroethylene, polyimide or aerogel.

4. The battery according to claim 1, characterized in that After the insulating component is placed at an ambient temperature greater than or equal to 500° C. and less than or equal to 1500° C. for 1 minute, the insulation resistance between the metal binding band and each of the metal shells is greater than or equal to A*B*1000 ohms.

5. The battery according to claim 4, characterized in that The insulating component is mica or ceramic coating.

6. The battery according to claim 1, characterized in that After the insulating component is placed at an ambient temperature greater than or equal to 250° C. and less than or equal to 500° C. for 5 minutes, the insulation resistance between the metal binding band and each of the metal shells is greater than or equal to A*B*5000 ohms.

7. The battery according to claim 1, characterized in that After the insulating component is placed at an ambient temperature greater than or equal to 500° C. and less than or equal to 1500° C. for 1 minute, the insulation resistance between the metal binding band and each of the metal shells is greater than or equal to A*B*5000 ohms.

8. The battery according to claim 1, characterized in that A is greater than or equal to 3.2V and A is less than or equal to 3.8V; and / or B is greater than or equal to 48, and B is less than or equal to 104.

9. The battery according to claim 1, characterized in that The positive electrode of the battery cell includes lithium phosphate, and after the insulating component is placed at an ambient temperature greater than or equal to 250° C. and less than or equal to 500° C. for 5 minutes, the insulation resistance between the metal strap and each of the metal shells is greater than or equal to A*B*1000 ohms.

10. The battery according to claim 1, characterized in that After the insulating component is placed at an ambient temperature greater than or equal to 500° C. and less than or equal to 1500° C. for 1 minute, the insulation resistance between the metal binding band and each of the metal shells is greater than or equal to A*B*1000 ohms.

11. The battery according to any one of claims 1 to 10, characterized in that The insulating component is an insulating substrate, and the insulating substrate is attached to the metal binding band; Alternatively, the insulating component is an insulating tape, and the insulating tape is wound around the metal binding tape; Alternatively, the insulating component is a coating, and the coating is applied to the metal binding tape.

12. The battery according to claim 11, characterized in that The insulating component is an insulating tape, and the insulating tape includes ceramic rubber and fiber cloth which are stacked.

13. The battery according to claim 11, characterized in that When the insulating component includes the coating, the coating is a hydrophobic coating, and the apparent contact angle of the hydrophobic coating is defined as θ1, then the condition is satisfied: 151°≤θ1≤153°; And / or, the coating is an oleophobic coating, and the apparent contact angle of the oleophobic coating is defined as θ2, then the condition is satisfied: θ2 ≥ 90°.

14. The battery according to any one of claims 1 to 10, characterized in that The battery further includes an isolation layer, the insulating component is at least arranged on a surface of the isolation layer close to the metal shell, and the isolation layer is attached to the metal binding band.

15. The battery according to claim 14, characterized in that The isolation layer is a sheet-like film plastic, a phenolic film plastic, an unsaturated polyester film plastic or an epoxy glass fiber board.

16. The battery according to any one of claims 1 to 10, characterized in that The creepage distance between the metal binding strap and the metal shell is L, and the condition L is greater than or equal to 8 mm is satisfied.

17. The battery according to any one of claims 1 to 10, characterized in that The insulating component comprises: a first insulating member, the first insulating member being located between the battery cell and the metal binding band; A second insulating member is located between the battery cell and the metal binding band, and the second insulating member is arranged crosswise with the first insulating member.

18. The battery according to claim 17, characterized in that There are a plurality of second insulating members, the plurality of second insulating members are arranged at intervals and are arranged crosswise with the first insulating member, and each of the battery cells is correspondingly provided with at least one second insulating member; And / or, the angle between the first insulating member and the second insulating member is 90 degrees; And / or, the battery cell is defined as having a height direction and a width direction, the first insulating member is arranged in a strip shape, and its length direction extends along the width direction of the battery cell; And / or, the battery cell is defined to have a height direction and a width direction, the second insulating member is arranged in a strip shape, and its length direction extends along the height direction of the battery cell.

19. The battery according to any one of claims 1 to 10, characterized in that The insulating component completely covers a surface of the metal binding tape facing the battery cell.

20. The battery according to claim 19, characterized in that The battery cell is defined to have a height direction, and in the height direction of the battery cell, both ends of the insulating component protrude from the metal binding band.

21. The battery according to claim 20, characterized in that It is defined that the metal binding band has a front side facing the battery cell and a back side facing away from the front side, and both ends of the insulating component are bent toward the back side.

22. The battery according to claim 21, characterized in that Both ends of the insulating component cover the back surface of the metal binding band, and both ends of the insulating component are partially overlapped or spaced apart.

23. The battery according to any one of claims 1 to 10, characterized in that The battery further includes a heat shrink tube, which is sleeved on the outer side of the insulating component.

24. An electrical equipment, characterized in that: Comprising a battery as claimed in any one of claims 1 to 23.

25. An energy storage device, characterized in that: Comprising a battery as claimed in any one of claims 1 to 23.

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