Battery cells, batteries, and power consuming devices

Abstract

The present application discloses a battery cell, a battery, and a power consumption device. The battery cell includes a housing, an electrode assembly, a detection assembly, and a protective structure, the housing has a receiving chamber, the electrode assembly is received in the receiving chamber, the detection assembly is connected to the housing, and is used to detect the working state of the battery cell, and the protective structure covers at least a part of the surface of the detection assembly. The embodiments of the present application can effectively improve the safety and reliability of the battery cell.

Description

[Technical field]

[0001] TECHNICAL FIELD This application relates to the field of batteries, and in particular to battery cells, batteries, and power consuming devices. [Background technology]

[0002] Batteries are widely used in electronic devices, such as mobile phones, laptops, electric scooters, electric cars, electric planes, electric boats, electric toy cars, electric toy boats, electric toy planes, and power tools. Battery cells can include nickel-cadmium battery cells, nickel-metal hydride battery cells, lithium-ion battery cells, and secondary alkaline zinc-manganese battery cells, etc.

[0003] In the development of battery technology, one of the research topics in battery technology is how to improve the safety and reliability of battery cells. Summary of the Invention

[0004] In view of the above problems, the embodiments of the present application provide a battery cell, a battery, and a power consuming device that can effectively improve the safety and reliability of the battery cell.

[0005] In a first aspect, an embodiment of the present application includes a housing, an electrode assembly, a detection assembly, and a protective structure, the housing having a chamber, the electrode assembly being accommodated in the chamber, the detection assembly being connected to the housing and being used to detect an operating state of the battery cell, and the protective structure providing the battery cell with a surface covering at least a portion of the detection assembly.

[0006] In the above technical solution, the battery cell is provided with a detection assembly and a protective structure for protecting the detection assembly, so that the detection assembly can detect the working state of the battery cell in real time, and can provide a prompt early warning for abnormal parameters during the operation of the battery cell, so that the corresponding safety mechanism or personnel can respond in a timely manner, and further improve the safety and reliability of the battery cell. The protective structure covers at least a part of the surface of the detection assembly, and can reduce the risk of the detection assembly being damaged during the manufacturing or use of the battery cell.

[0007] In some embodiments of the first aspect, the housing includes a first wall, and the detection assembly is connected to the first wall.

[0008] In some embodiments of the first aspect, the detection assembly is located on the side of the first wall away from the chamber, which can reduce the occupancy of the internal space of the battery cell by the detection assembly, which is advantageous for improving the energy density of the battery cell. Furthermore, the detection assembly is located on the side of the first wall away from the chamber, which further facilitates assembly of the detection assembly.

[0009] In some embodiments of the first aspect, the housing includes an electrode terminal protruding from a surface of the first wall away from the containment chamber, the electrode terminal being electrically connected to a tab of the electrode assembly, and the detection assembly being electrically connected to the electrode terminal.

[0010] In some embodiments of the first aspect, along a thickness direction of the first wall, a surface of the protective structure remote from the first wall is not higher than a surface of the electrode terminal remote from the first wall.

[0011] In the above technical solution, the protective structure is covered on the surface of the detection assembly, which is advantageous for reducing the overall volume of the battery cell without unnecessarily increasing the thickness of the first wall, and further reduces the risk of interference between the protective structure and other components in the battery.

[0012] In some embodiments of the first aspect, the detection assembly may be located on the side of the first wall facing the chamber, which can advantageously reduce the overall volume of the battery cell, and further, the detection assembly may be located on the side of the first wall facing the chamber to further improve the flatness and integrity of the outer surface of the battery cell.

[0013] In some embodiments of the first aspect, a recess is provided in the first wall, the recess being recessed from a surface of the first wall facing away from the chamber in a direction facing the chamber, or the recess is recessed from a surface of the first wall facing the chamber in a direction away from the chamber, and at least a portion of the detection assembly is accommodated in the recess.

[0014] In the above technical solution, a recess is provided in the first wall, and at least a part of the detection assembly is accommodated in the recess, thereby improving the flatness of the surface of the first wall and reducing the risk of interference between the detection assembly and other components in the battery.

[0015] In some embodiments of the first aspect, the shape and dimensions of the protective structure match the shape and dimensions of the outer contour of the recess, thereby improving the accuracy of the fit between the protective structure and the recess and further enhancing the protective effect of the protective structure.

[0016] In some embodiments of the first aspect, along the thickness direction of the first wall, the surface of the protective structure facing away from the first wall is not higher than the surface of the first wall facing away from the storage chamber, thereby further improving the flatness of the surface of the first wall.

[0017] In some embodiments of the first aspect, the protective structure includes a body portion provided over at least a portion of a surface of the detection assembly.

[0018] In the above technical solution, the body has a certain thickness and hardness, and has high deformation resistance, so that the detection assembly can be protected more effectively.

[0019] In some embodiments of the first aspect, the protective structure further includes a side portion, the side portion connected around the body portion to form an accommodating space for accommodating the detection member.

[0020] In the above technical solution, the protective structure is provided as a hood-like structure having an accommodation space, thereby shielding and protecting the detection assembly, and accommodating the detection assembly in the accommodation space, thereby further reducing the risk of interference between the protective structure and the detection assembly, and further improving the protective effect of the protective structure.

[0021] In some embodiments of the first aspect, the protective structure is a membrane layer structure, and the membrane layer structure is affixed to at least a portion of a surface of the detection assembly.

[0022] In the above technical solution, the protective structure is provided as a film layer structure, and the film layer structure has a small thickness and can be attached to the surface of the detection assembly, so that the structural complexity of the protective structure can be effectively reduced. Furthermore, during the manufacturing process of the detection assembly, the film layer structure can be attached to the surface of the detection assembly to form the protective structure, which is favorable for simplifying the process.

[0023] In some embodiments of the first aspect, the protective structure is connected to the housing by engagement or adhesion.

[0024] In the above technical solution, if the protective structure is connected to the battery cell housing by adhesion, the protective effect of the protective structure can be further enhanced, whereas if the protective structure is connected to the battery cell housing by engagement, it is advantageous to improve the convenience of installation of the protective structure.

[0025] In some embodiments of the first aspect, the battery cell further includes an insulating member for insulating the electrode terminal and the first wall, and the detection assembly includes a sensing member and a conductive wire connected to each other, and the sensing member is electrically connected to the electrode terminal via the conductive wire.

[0026] In some embodiments of the first aspect, a connection portion is provided on a surface of the electrode terminal away from the first wall, and the conductive wire is connected to the connection portion to electrically connect the sensing member and the electrode terminal.

[0027] In some embodiments of the first aspect, the insulating member has a convex portion protruding from a surface of the electrode terminal away from the first wall, and the convex portion is used to separate the surface of the electrode terminal away from the first wall from the connection portion.

[0028] In the above technical proposal, the protrusion separates the connection portion from the central region of the surface of the electrode terminal facing away from the first wall, thereby reducing the risk of damage to the detection assembly during the chemical formation of the battery cell.

[0029] In some embodiments of the first aspect, a through hole is provided in the insulating member, and the conducting wire is connected to the electrode terminal through the through hole.

[0030] In the above technical proposal, the conductor passes through the through hole and is connected to the electrode terminal located inside the insulating member, and the connection portion between the conductor and the electrode terminal is located inside the insulating member, thereby reducing the risk that the connection portion between the conductor and the electrode terminal will be exposed to the external environment and damaged.

[0031] In some embodiments of the first aspect, the housing includes a shell and an end cover, the shell having an opening, the end cover adapted to cover the opening, and the end cover being a first wall of the housing.

[0032] In some embodiments of the first aspect, the protective structure is provided with a reinforcing portion, the reinforcing portion being formed to protrude from a surface of the protective structure on a side facing away from the detection assembly.

[0033] In the above technical proposal, the protective structure is provided with a reinforcing portion, thereby increasing the pressure resistance of the protective structure and further improving the protective effect of the protective structure.

[0034] In some embodiments of the first aspect, the material of the protective structure is an insulating material.

[0035] In the above technical solution, the protective structure is made of insulating and heat-insulating material, which can reduce the impact of heat generated during the use of the battery cell on the protective structure, improve the service life of the protective structure, and reduce the risk of short circuit caused by contact interference between the protective structure and the detection assembly, which will further affect the normal use of the detection assembly.

[0036] In a second aspect, embodiments of the present application provide a battery including a battery cell according to any of the embodiments of the first aspect.

[0037] In a third aspect, embodiments of the present application provide a power consuming device including a battery cell according to any embodiment of the first aspect for supplying electrical energy.

[0038] The above description is merely an outline of the technical solution of the present application, which can be implemented according to the contents of the specification in order to more clearly understand the technical means of the present application. In addition, in order to make the above and other objectives, features and advantages of the present application more comprehensible, the following specific embodiments of the present application are illustrated.

[0039] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not intended to limit the present application. In the drawings, like numerals refer to like elements throughout. [Brief description of the drawings]

[0040] [Figure 1] 1 is a structural schematic diagram of a vehicle according to some embodiments of the present application. [Diagram 2] FIG. 1 is an exploded schematic diagram of a battery according to some embodiments of the present application. [Diagram 3] FIG. 3 is a structural schematic diagram of the battery module shown in FIG. 2. [Figure 4]FIG. 2 is an exploded schematic diagram of a battery cell according to some embodiments of the present application. [Diagram 5] FIG. 2 is an exploded schematic view of a first wall of a battery cell according to some embodiments of the present application. [Figure 6] 1 is a structural schematic diagram of a protection structure according to some embodiments of the present application; [Figure 7] FIG. 2 is a structural schematic diagram of another protective structure according to some embodiments of the present application. [Figure 8] FIG. 2 is an exploded schematic view of a first wall of another battery cell according to some embodiments of the present application. [Figure 9] 2 is a schematic diagram showing a partial structure of an electrode terminal of a battery cell according to some embodiments of the present application. FIG. [Figure 10] FIG. 2 is a partial structural schematic diagram of an electrode terminal of another battery cell according to some embodiments of the present application. [Figure 11] FIG. 13 is a partial structural schematic diagram of an electrode terminal of yet another battery cell according to some embodiments of the present application. [Figure 12] FIG. 2 is a structural schematic diagram of yet another protective structure according to some embodiments of the present application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0041] The following detailed description will be given of the embodiments of the technical solution of the present application with reference to the accompanying drawings. The following embodiments are provided to more clearly illustrate the technical solution of the present application, and are merely illustrative and do not limit the scope of protection of the present application.

[0042] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application are hereinafter described clearly and completely with reference to the drawings of the embodiments of the present application, but it is clear that the described embodiments are only a part of the embodiments of the present application, and are not all of the embodiments. Based on the embodiments of the present application, other embodiments obtained by those skilled in the art without paying creative efforts all belong to the protection scope of the present application.

[0043] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by those skilled in the art. The terms used in this application are merely to describe certain embodiments and are not intended to limit this application. The terms "comprise" and "have" and variations thereof in this application's specification, claims, and above description of the drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in this application's specification, claims, and above drawings are intended to distinguish different objects, and are not intended to describe a specific order or subordinate relationship.

[0044] An "embodiment" as referred to in the present application means that a particular feature, structure, or characteristic described with respect to the embodiment may be included in at least one embodiment of the present application. Appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they mutually exclusive, separate, or alternative embodiments of other embodiments.

[0045] In the description of this application, unless otherwise clearly specified or limited, the terms "attached", "connected", "connected" and "attached" should be understood in a broad sense, for example, may be a fixed connection, a removable connection, or an integral connection, may be a direct connection, may be an indirect connection through an intermediate medium, or may be communication between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific situation.

[0046] The term "and / or" in this application merely describes the relationship between related objects, and means that there are three relationships, for example, A and / or B can indicate three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the sign " / " in this application generally indicates that the related objects before and after it are in an "or" relationship.

[0047] In the embodiments of the present application, the same reference numerals represent the same elements, and detailed descriptions of the same elements in different embodiments are omitted for brevity. It is understood that the dimensions of various elements in the embodiments of the present application, such as thickness, length, width, etc., and the dimensions of the entire integrated device, such as thickness, length, width, etc., shown in the accompanying drawings are merely illustrative and should not be construed as any limitation of the present application.

[0048] As used herein, "plurality" means two or more (including two).

[0049] In this application, the term "parallel" includes not only absolutely parallel but also approximately parallel as generally accepted in engineering, and the term "perpendicular" includes not only absolutely perpendicular but also approximately perpendicular as generally accepted in engineering.

[0050] At present, due to the development of market conditions, the application of power batteries is becoming more and more widespread. Power batteries are not only applicable to energy storage power systems such as hydroelectric, thermal, wind and solar power stations, but also widely applied to electric transportation such as electric bicycles, electric motorcycles and electric cars, as well as various fields such as military equipment and aerospace. With the continuous expansion of the application fields of power batteries, the market demand for them is also expanding.

[0051] In the present application, the battery cell may include a lithium ion secondary battery cell, a lithium ion primary battery cell, a lithium sulfur battery cell, a sodium lithium ion battery cell, a sodium ion battery cell, or a magnesium ion battery cell, etc., and the embodiments of the present application are not limited thereto. The battery cell may be a cylinder, a flat body, a rectangular parallelepiped, or other shape, and the embodiments of the present application are not limited thereto.

[0052] A battery as referred to in the embodiments of the present application refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity. For example, a battery as referred to in the present application may include a battery module or a battery pack. A battery usually includes a housing for packaging one or more battery cells. The housing can prevent liquids and other foreign objects from affecting the charging or discharging of the battery cells.

[0053] The battery cell includes an electrode assembly and an electrolyte, and the electrode assembly includes a positive electrode plate, a negative electrode plate, and a separator. The battery cell is mainly operated by the movement of metal ions between the positive electrode plate and the negative electrode plate. The positive electrode plate includes a positive electrode current collector and a positive electrode active material layer, the positive electrode active material layer is applied to the surface of the positive electrode current collector, the current collector not coated with the positive electrode active material layer protrudes from the current collector coated with the positive electrode active material layer, and the current collector not coated with the positive electrode active material layer is stacked to form a positive electrode tab. Taking a lithium ion battery as an example, the material of the positive electrode current collector may be aluminum, and the positive electrode active material may be lithium cobalt oxide, lithium iron phosphate, ternary lithium, lithium manganate, etc. The negative electrode plate includes a negative electrode collector and a negative electrode active material layer, the negative electrode active material layer is applied to the surface of the negative electrode collector, the current collector on which the negative electrode active material layer is not applied protrudes from the current collector on which the negative electrode active material layer is applied, and the current collectors on which the negative electrode active material layer is not applied are stacked to form a negative electrode tab. The material of the negative electrode collector may be copper, and the negative electrode active material may be carbon, silicon, etc. The material of the separator may be PP, PE, etc. In addition, the electrode assembly may have a wound structure or a stacked structure, and the embodiment of the present application is not limited thereto.

[0054] The battery cell further includes a housing, the housing including a shell, an end cover, electrode terminals, and an insulating member. The shell has an opening, and the end cover is fitted over the opening, joined and sealed to form a sealed space for containing the electrode assembly and the electrolyte. The insulating member is fitted over the electrode terminals to prevent the electrode terminals from being short-circuited.

[0055] The inventors of the present application have found that currently, conventional battery cells are not provided with a detection assembly, and therefore the working state of the battery cell cannot be detected in real time. The working state of the battery cell includes, but is not limited to, related data such as voltage, temperature, etc. In addition, currently, conventional battery cells are not provided with a protection structure for protecting the detection assembly.

[0056] In order to solve the problem of being unable to detect the working state of the battery cell in real time, the inventor of the present application conducted research and found that the working state of the battery cell can be detected in real time by providing a detection assembly. The detection assembly can control the working state of the battery cell in real time, and can provide a rapid early warning for abnormal parameters during the operation of the battery cell, so that the corresponding safety mechanism or staff can respond in a timely manner, and further improve the safety and reliability of the battery cell. In addition, a protective structure for protecting the detection assembly can be provided, which can reduce the risk of the detection assembly being damaged during the use of the battery cell.

[0057] Based on the above considerations, the inventor has conducted extensive research and has designed a battery cell and provided the battery cell with a detection assembly and a protective structure for protecting the detection assembly, thereby enabling the operating state of the battery cell to be controlled in real time and reducing the risk of damage to the detection assembly during the use of the battery cell.

[0058] The technical solutions described in the embodiments of the present application are applicable to battery cells, batteries, and power consuming devices that use batteries.

[0059] The power consumption device may be a vehicle, a mobile phone, a portable device, a notebook computer, a steamer, a spacecraft, an electric toy, an electric tool, etc. The vehicle may be an engine-driven vehicle, a natural gas vehicle, or a new energy vehicle. The new energy vehicle may be a pure electric vehicle, a hybrid vehicle, or a range extender vehicle, etc. The spacecraft may include an airplane, a rocket, a space shuttle, a spaceship, etc. The electric toy may include a stationary or mobile electric toy, such as a game console, an electric car toy, an electric steamer toy, and an electric airplane toy. The electric tool may include a metal cutting electric tool, a grinding electric tool, an assembly electric tool, and a railway electric tool, such as an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, a hammer drill, a concrete vibrator, and an electric planer. In the embodiment of the present application, there is no particular limitation on the power consumption device.

[0060] It should be understood that the technical solutions described in the embodiments of the present application are not limited to the batteries and power consumption devices described above, but can also be applied to all batteries including their housings and power consumption devices using batteries. For the sake of simplicity, the following embodiments will all be described using electric vehicles as examples.

[0061] FIG. 1 is a structural schematic diagram of a vehicle according to some embodiments of the present application.

[0062] 1, a battery 2 is provided inside the vehicle 1, and the battery 2 may be provided at the bottom, head, or tail of the vehicle 1. The battery 2 can be used to power the vehicle 1, for example, the battery 2 can function as an operating power source for the vehicle 1.

[0063] The vehicle 1 may further include a controller 3 and a motor 4, where the controller 3 is used to control the battery 2 to power the motor 4, for example for power consumption needs of the vehicle 1 for start-up, navigation and operation during driving.

[0064] In some embodiments of the present application, the battery 2 may not only serve as the operating power source for the vehicle 1, but may also serve as the propulsion power source for the vehicle 1, providing propulsion power to the vehicle 1 in place of or in part in place of fuel oil or natural gas.

[0065] FIG. 2 is an exploded schematic diagram of a battery according to some embodiments of the present application.

[0066] As shown in FIG. 2, the battery 2 includes a housing 5 and a battery cell, and the battery cell is housed within the housing 5.

[0067] The housing 5 is used to house the battery cells, and the housing 5 may have various structures. In some embodiments, the housing 5 may include a first housing part 5a and a second housing part 5b, and the first housing part 5a and the second housing part 5b are covered and joined to each other, and a housing space 5c for housing the battery cells is defined by both the first housing part 5a and the second housing part 5b. The second housing part 5b may have a hollow structure with one end open, and the first housing part 5a may have a plate-like structure, and the first housing part 5a is covered and joined to the opening side of the second housing part 5b to form the housing 5 having the housing space 5c. The first housing part 5a and the second housing part 5b may both have a hollow structure with one end open, and the opening side of the first housing part 5a is covered and joined to the opening side of the second housing part 5b to form the housing 5 having the housing space 5c. Of course, the first housing part 5a and the second housing part 5b may have various shapes, such as a cylindrical body or a rectangular parallelepiped.

[0068] In order to improve the sealing performance between the first housing part 5a and the second housing part 5b after connection, a sealing member such as a sealant or a seal ring may be provided between the first housing part 5a and the second housing part 5b.

[0069] When the first housing part 5a is placed over and coupled to the top of the second housing part 5b, the first housing part 5a may be called an upper cover, and the second housing part 5b may be called a lower housing.

[0070] The battery 2 may have one or more battery cells. When there are multiple battery cells, the multiple battery cells may be connected in series, parallel, or series-parallel, and a series-parallel connection means that some of the multiple battery cells are connected in series and some are connected in parallel. The multiple battery cells may be directly connected in series, parallel, or series-parallel, and then the multiple battery cells may be integrated and housed in the housing 5. Of course, the multiple battery cells may be connected in series, parallel, or series-parallel to form a battery module 6, and then the multiple battery modules 6 may be connected in series, parallel, or series-parallel to integrate and housed in the housing 5.

[0071] FIG. 3 is a structural schematic diagram of the battery module shown in FIG.

[0072] 3, there are a plurality of battery cells 7, and the plurality of battery cells 7 are connected in series, in parallel, or in series-parallel to form a battery module 6. The plurality of battery modules 6 are connected in series, in parallel, or in series-parallel, and then integrated and housed in a housing.

[0073] The plurality of battery cells 7 in the battery module 6 are electrically connected to each other by bus members, thereby realizing a parallel connection, a series connection, or a series-parallel connection of the plurality of battery cells 7 in the battery module 6.

[0074] FIG. 4 is an exploded schematic diagram of a battery cell according to some embodiments of the present application.

[0075] 4, a battery cell 7 according to an embodiment of the present application includes an electrode assembly 10 and a housing 20, where the electrode assembly 10 is housed in the housing 20. The housing 20 can also be used to house an electrolyte, such as an electrolyte solution.

[0076] In some embodiments, the housing 20 includes a first wall 30, and the housing 20 may have various shapes, such as a cylinder, a rectangular parallelepiped, etc. The shape of the housing 20 can be determined according to the specific shape of the electrode assembly 10. For example, if the electrode assembly 10 has a cylindrical structure, a cylindrical shell can be selected, and if the electrode assembly 10 has a rectangular parallelepiped structure, a rectangular parallelepiped shell can be selected.

[0077] In the battery cell 7, there may be one, two or more electrode assemblies 10 housed in the housing 20. For example, in FIG.

[0078] FIG. 5 is an exploded schematic diagram of a first wall of a battery cell according to some embodiments of the present application.

[0079] 5, an embodiment of the present application provides a battery cell 7, which includes a housing 20, an electrode assembly 10, a detection assembly 40, and a protective structure 50. The housing 20 has a receiving chamber. The electrode assembly 10 is received in the receiving chamber, the detection assembly 40 is connected to the housing 20 and is used to detect the working state of the battery cell 7, and the protective structure 50 covers at least a part of the surface of the detection assembly 40.

[0080] Alternatively, the detection assembly 40 may be provided on the side of the housing 20 away from the receiving chamber, or on the side of the housing 20 facing the receiving chamber. By providing the detection assembly 40 on the side of the housing 20 away from the receiving chamber, the occupation of the internal space of the battery cell 7 by the detection assembly 40 can be reduced. By providing the detection assembly 40 on the side of the housing 20 facing the receiving chamber, the overall volume of the battery cell 7 can be reduced. The detection assembly 40 can detect the working state of the battery cell 7 in real time, and the working state of the battery cell 7 includes, but is not limited to, related data such as voltage, temperature, etc. By providing the detection assembly 40 on the battery cell 7, the working state of the battery cell 7 can be easily controlled in real time, and a prompt early warning can be given to the abnormal parameters during the operation of the battery cell 7, so that the corresponding safety mechanism or staff can respond in a timely manner, and the safety and reliability of the battery cell 7 can be further improved.

[0081] In some embodiments, the housing 20 includes a first wall 30, and the detection assembly 40 is connected to the first wall 30. The first wall 30 may be any one of the walls surrounding the housing 20 of the battery cell 7, and the means for connecting the detection assembly 40 and the first wall 30 may be, but is not limited to, welding, engaging, or gluing.

[0082] In some embodiments, the detection assembly 40 is located on the side of the first wall 30 away from the storage chamber, i.e., the detection assembly 40 is located outside the battery cell 7, which can reduce the occupation of the internal space of the battery cell 7 by the detection assembly 40, and is advantageous for improving the energy density of the battery cell 7. Furthermore, by positioning the detection assembly 40 on the side of the first wall 30 away from the storage chamber, the assembly of the detection assembly 40 can be made easier.

[0083] The protective structure 50 covers at least a part of the surface of the detection assembly 40, thereby reducing the risk of damage to the detection assembly 40 during the manufacturing or use of the battery cell 7. The shape of the orthogonal projection of the protective structure 50 onto the first wall 30 along the thickness direction of the first wall 30 may be rectangular, triangular, circular, or the like, but the present application does not limit the shape of the orthogonal projection of the protective structure 50 onto the detection assembly 40, and may be selected according to actual circumstances. For example, the protective structure 50 may be, but is not limited to, a sheet-like structure, a hood-like structure, a membrane layer structure, or the like.

[0084] In the above technical solution, the battery cell 7 is provided with the detection assembly 40 and the protective structure 50 for protecting the detection assembly 40, so that the detection assembly 40 can detect the working state of the battery cell 7 in real time, and can provide a prompt early warning for abnormal parameters during the operation of the battery cell 7, so that the corresponding safety mechanism or staff can respond in a timely manner, and further improve the safety and reliability of the battery cell 7. The protective structure 50 covers at least a part of the surface of the detection assembly 40, thereby reducing the risk of the detection assembly 40 being damaged during the manufacturing or use of the battery cell 7.

[0085] In some embodiments, the housing 20 includes an electrode terminal 31 that protrudes from a surface of the first wall 30 away from the chamber, the electrode terminal 31 is electrically connected to a tab on the electrode assembly 10, and the detection assembly 40 is electrically connected to the electrode terminal 31.

[0086] For example, the connecting means between the electrode terminal 31 and the first wall 30 may be, but is not limited to, welding, riveting, or bonding, etc. The detection assembly 40 is electrically connected to the electrode terminal 31 and can detect relevant data such as the voltage, temperature, etc. of the electrode terminal 31 of the battery cell 7, so that the working state of the battery cell 7 can be easily controlled in real time, and a prompt early warning can be given to abnormal parameters during the operation of the battery cell 7, so that the corresponding safety mechanism or staff can respond in a timely manner, and further improve the safety and reliability of the battery cell 7.

[0087] In some embodiments, along the thickness direction of the first wall 30 , the surface of the protective structure 50 facing away from the first wall 30 is not higher than the surface of the electrode terminal 31 facing away from the first wall 30 .

[0088] For example, in this embodiment, the concept of the present invention will be described by taking as an example that the detection assembly 40 is provided on the side of the first wall 30 that is remote from the accommodating chamber. The electrode terminal 31 protrudes from the surface of the first wall 30 that is remote from the accommodating chamber, and the protective structure 50 covers at least a part of the surface of the detection assembly 40. Along the thickness direction of the first wall 30, the surface of the protective structure 50 that is remote from the first wall 30 is not higher than the surface of the electrode terminal 31 that is remote from the first wall 30, that is, the total thickness of the protective structure 50 and the detection assembly 40 is equal to or less than the thickness of the electrode terminal 31 that protrudes from the surface of the first wall 30 that is remote from the accommodating chamber.

[0089] In the above technical solution, the protective structure 50 is covered on the surface of the detection assembly 40, which is advantageous in reducing the overall volume of the battery cell 7 without unnecessarily increasing the thickness of the first wall 30, and further reduces the risk of interference between the protective structure 50 and other components in the battery.

[0090] In some embodiments, the detection assembly 40 is located on the side of the first wall 30 facing the storage chamber, i.e., the detection assembly 40 is located inside the battery cell 7, which is advantageous for reducing the overall volume of the battery cell 7; further, by having the detection assembly 40 located on the side of the first wall 30 facing the storage chamber, the flatness and integrity of the outer surface of the battery cell 7 can also be improved.

[0091] In some embodiments, a recess 32 is provided in the first wall 30, and the recess 32 is recessed from the surface of the first wall 30 facing away from the storage chamber in a direction facing the storage chamber, or the recess 32 is recessed from the surface of the first wall 30 facing the storage chamber in a direction facing away from the storage chamber, and at least a portion of the detection assembly 40 is accommodated in the recess 32.

[0092] For example, when the detection assembly 40 is provided on the side of the first wall 30 away from the storage chamber, the recess 32 is formed recessed from the surface of the first wall 30 on the side away from the storage chamber in a direction facing the storage chamber, and at least a part of the detection member is accommodated in the recess 32. The shape of the recess 32 orthogonally projected onto the first wall 30 along the thickness direction of the first wall 30 may be rectangular, triangular, circular, or the like, and may be a shape that matches the outline of the detection assembly 40.

[0093] When the detection assembly 40 is provided on the side of the first wall 30 facing the storage chamber, the recess 32 is formed by being recessed from the surface of the first wall 30 facing the storage chamber in a direction away from the storage chamber, and at least a part of the detection member is housed in the recess 32. The shape of the recess 32 as orthogonally projected onto the first wall 30 along the thickness direction of the first wall 30 may be rectangular, triangular, circular, or the like, and may be a shape that matches the outline of the detection assembly 40.

[0094] Along the thickness direction of the first wall 30, the recess depth of the recess 32 may be greater than the thickness of the detection assembly 40, may be equal to the thickness of the detection assembly 40, or may be less than the thickness of the detection assembly 40. The present application does not limit the specific recess depth of the recess 32, and it may be selected according to actual circumstances.

[0095] By providing a recess 32 in the first wall 30 and accommodating at least a portion of the detection assembly 40 in the recess 32, the flatness of the surface of the first wall 30 can be improved and the risk of interference between the detection assembly 40 and other components in the battery can be reduced.

[0096] In some embodiments, the geometry of protective structure 50 matches the geometry of the outer contour of recess 32 .

[0097] The shape and dimensions of protective structure 50 match the shape and dimensions of the outer periphery of recess 32, thereby allowing protective structure 50 to be fitted into recess 32, improving the accuracy of the fit between protective structure 50 and recess 32, and further enhancing the protective effect of protective structure 50.

[0098] In some optional embodiments, along the thickness direction of the first wall 30, the surface of the protective structure 50 facing away from the first wall 30 is not higher than the surface of the first wall 30 facing away from the containment chamber, thereby further improving the flatness of the surface of the first wall 30.

[0099] FIG. 6 is a structural schematic diagram of a protection structure according to some embodiments of the present application.

[0100] With continued reference to FIG. 6, in some embodiments, the protective structure 50 includes a body portion 51 that is disposed over at least a portion of a surface of the detection assembly 40 .

[0101] Specifically, the main body 51 of the protective structure 50 is a sheet-like structure. The main body 51 may be made of, but is not limited to, a material such as polyester resin, polyethylene, or polypropylene. As a specific implementation means for covering at least a part of the surface of the detection assembly 40, the main body 51 may be connected to the first wall 30 and cover at least a part of the surface of the detection assembly 40, and the connection means between the main body 51 and the first wall 30 may be, but is not limited to, welding, engagement, adhesion, etc. The main body 51 may be directly connected to at least a part of the surface of the detection assembly 40, and the connection means between the main body 51 and the detection assembly 40 may be, but is not limited to, welding, engagement, adhesion, etc. The sheet-like structure has a certain thickness and hardness, and further has high deformation resistance, so that the detection assembly 40 can be protected more effectively.

[0102] In the above technical solution, the body 51 has a certain thickness and hardness, and has high deformation resistance, so that the detection assembly 40 can be protected more effectively.

[0103] FIG. 7 is a structural schematic diagram of another protective structure according to some embodiments of the present application.

[0104] Continuing to refer to FIG. 7, in some embodiments, the protective structure 50 further includes a side portion 52 that is connected around the body portion 51 to form a receiving space for receiving the detection member.

[0105] Specifically, the side portion 52 is connected around the main body portion 51 to form a hood-like structure having a storage space. The side portion 52 may be made of materials such as, but not limited to, polyester resin, polyethylene or polypropylene. The main body portion 51 and the side portion 52 may be an integrally molded structure, which can effectively improve the structural strength of the protective structure 50. The storage space can accommodate the detection assembly 40.

[0106] In the above technical solution, the protective structure 50 is provided as a hood-like structure having an accommodation space, thereby shielding and protecting the detection assembly 40, and accommodating the detection assembly 40 in the accommodation space, thereby further reducing the risk of interference between the protective structure 50 and the detection assembly 40, and further improving the protective effect of the protective structure 50.

[0107] In some embodiments, the protective structure 50 is a membrane layer structure that is attached to at least a portion of the surface of the detection assembly 40 .

[0108] The membrane layer structure adopts a high-strength flexible thin film material and an auxiliary structure, generates a certain pretension stress inside it by a certain method, and forms a spatial shape under the control of the stress to form a coating structure, and the membrane layer structure has sufficient rigidity to withstand external loads.

[0109] In the above technical solution, the protective structure 50 is provided as a film layer structure, and the film layer structure has a small thickness and can be attached to the surface of the detection assembly 40, thereby effectively reducing the structural complexity of the protective structure 50. Furthermore, during the manufacturing process of the detection assembly 40, the film layer structure can be attached to the surface of the detection assembly 40 to form the protective structure 50, which is favorable for simplifying the process.

[0110] In some embodiments, the protective structure 50 is connected to the housing 20 by engagement or adhesion.

[0111] For example, when the protective structure 50 is connected to the housing 20 of the battery cell 7 by adhesion, the protective structure 50 includes a matrix and an adhesive layer, and the adhesive layer is adhered to the housing 20, so that the protective structure 50 is fixedly connected to the housing 20. The matrix of the protective structure 50 has a higher hardness than the adhesive layer, and can effectively protect the detection assembly 40 from damage. In addition, since the adhesive layer is soft and has a high deformation ability, after the protective structure 50 is connected to the housing 20 via the adhesive layer, the adhesive layer plays a certain sealing role for the gap between the protective structure 50 and the housing 20, and can prevent foreign objects and dust from contacting the detection assembly 40 through the gap and further affecting the operation of the detection assembly 40, and the protective effect of the protective structure 50 can be further enhanced.

[0112] When the protective structure 50 is connected to the housing 20 of the battery cell 7 by engagement, the protective structure 50 includes a matrix and an engaging member provided on the matrix, an engaging structure corresponding to the engaging member is provided on the housing 20, and the engaging member is fitted into the engaging structure to engage and connect the protective structure 50 to the housing 20, which is advantageous in improving the convenience of installation of the protective structure 50.

[0113] FIG. 8 is an exploded schematic view of a first wall of another battery cell according to some embodiments of the present disclosure.

[0114] Continuing to refer to FIG. 8, in some embodiments, the battery cell 7 further includes an insulating member 33 for insulating the electrode terminal 31 and the first wall 30, and the detection assembly 40 includes a sensing member 41 and a conductor 42 connected to each other, and the sensing member 41 is electrically connected to the electrode terminal 31 via the conductor 42.

[0115] The installation position of the insulating member 33 is not limited, and for example, the insulating member 33 may be provided on the side of the first wall 30 away from the storage chamber, the insulating member 33 may be provided on the side of the first wall 30 facing the storage chamber, or the insulating member 33 may be provided on both the side of the first wall 30 away from the storage chamber and the side of the first wall 30 facing the storage chamber. It is only necessary for the insulating member 33 to insulate the electrode terminal 31 from the first wall 30.

[0116] For example, in this embodiment, the concept of the present invention will be described by taking as an example an insulating member 33 provided on the side of the first wall 30 away from the accommodating chamber. The insulating member 33 is fitted into a portion of the electrode terminal 31 protruding from the surface of the first wall 30 on the side away from the accommodating chamber, the insulating member 33 and the electrode terminal 31 are in contact with each other, and the insulating member 33 is used to insulate the electrode terminal 31 from the first wall 30. The detection assembly 40 is provided on the surface of the first wall 30 on the side away from the accommodating chamber.

[0117] The detection assembly 40 includes a sensing member 41 and a conductor 42 connected to each other. For example, the sensing member 41 is used to detect the working state of the battery cell 7. The sensing member 41 includes, but is not limited to, a temperature sensing device, a pressure sensing device, etc. The conductor 42 is used to transmit an electrical signal to the sensing member 41, and the sensing member 41 is electrically connected to the electrode terminal 31 via the conductor 42.

[0118] FIG. 9 is a schematic diagram of a partial structure of an electrode terminal of a battery cell according to some embodiments of the present application.

[0119] 9 , in some embodiments, a connection portion 43 is provided on a surface of the electrode terminal 31 away from the first wall 30, and the conductive wire 42 is connected to the connection portion 43 to electrically connect the sensing member 41 and the electrode terminal 31. The connection portion 43 is a connection portion between the electrode terminal 31 and the conductive wire 42.

[0120] FIG. 10 is a schematic diagram of a partial structure of an electrode terminal of another battery cell according to some embodiments of the present application.

[0121] Continuing to refer to FIG. 10 , in some embodiments, the insulating member 33 has a protrusion 331 protruding from the surface of the electrode terminal 31 facing away from the first wall 30, and the protrusion 331 is used to separate the surface of the electrode terminal 31 facing away from the first wall 30 from the connection portion 43.

[0122] Since the battery cell 7 has no power when assembled, it needs to be activated by charging. The process of initially charging the battery cell 7 is called formation to activate the active material in the battery cell 7. During the formation process of the battery cell 7, the formation pin is inserted and connected to the central region of the electrode terminal 31 to perform formation operation. During this process, if there is any misalignment in the insertion connection of the formation pin, it is likely to come into contact with the detection assembly 40, and even cause damage to the detection assembly 40.

[0123] The insulating member 33 has a protrusion 331 protruding from the surface of the electrode terminal 31 on the side away from the first wall 30, and the protrusion 331 is used to separate the central region of the surface of the electrode terminal 31 on the side away from the first wall 30 from the connecting portion 43. The protrusion 331 and the insulating member 33 may be an integrally molded structure. The protrusion 331 of the insulating member 33 is integrally molded by a stamping process, so that the protrusion 331 and the insulating member 33 have an integral structure. On the one hand, the protrusion 331 of this embodiment can be easily applied to the design of the conventional insulating member 33, and there is no need to make too many changes to the design of the conventional insulating member 33; on the other hand, the insulating member 33 forms the protrusion 331 by a stamping process, so the manufacturing process is simple and the protrusion 331 can be formed without adding any other material separately.

[0124] By providing the convex portion 331, the connection portion 43 is separated from the central region of the surface of the electrode terminal 31 facing away from the first wall 30, thereby reducing the risk of damage to the detection assembly 40 during the chemical formation process of the battery cell 7.

[0125] FIG. 11 is a schematic diagram of a partial structure of an electrode terminal of still another battery cell according to some embodiments of the present application.

[0126] Continuing to refer to FIG. 11, in some embodiments, a through hole 332 is provided in the insulating member 33, and the conductive wire 42 is connected to the electrode terminal 31 through the through hole 332.

[0127] Specifically, a through hole 332 is provided on the side of the insulating member 33 closer to the detection member, and the sensing member 41 in the detection member is electrically connected to the electrode terminal 31 located inside the insulating member 33 by passing a conductor 42 through the through hole 332.

[0128] In the above technical proposal, the conductor 42 passes through the through hole 332 and is connected to the electrode terminal 31 located inside the insulating member 33, and the connection portion 43 between the conductor 42 and the electrode terminal 31 is located inside the insulating member 33, thereby reducing the risk that the connection portion 43 between the conductor 42 and the electrode terminal 31 will be exposed to the external environment and damaged.

[0129] In some embodiments, the housing 20 includes a shell and an end cover, where the shell has an opening and the end cover is adapted to cover the opening, the end cover being the first wall 30 of the housing 20 .

[0130] The shell may have various shapes, such as a cylinder or a rectangular parallelepiped. The shape of the shell can be determined according to the specific shape of the electrode assembly 10. For example, if the electrode assembly 10 has a cylindrical structure, a cylindrical shell can be selected, and if the electrode assembly 10 has a rectangular parallelepiped structure, a rectangular shell can be selected.

[0131] The end cover may have various structures, for example, the end cover may be a plate-like structure, a hollow structure with one end open, etc. For example, the shell may have a rectangular parallelepiped structure, the end cover may be a plate-like structure, and the end cover may be fitted over and joined to the opening at the top of the shell. The end cover may be made of an insulating material (e.g., plastic) or a conductive material (e.g., metal).

[0132] In the embodiment of the present application, the first wall 30 may be an end cover. Optionally, the detection assembly 40 may be provided on the side of the end cover away from the chamber, or on the side of the end cover facing the chamber. The connection between the detection assembly 40 and the end cover may be, but is not limited to, welding, engagement, or adhesion.

[0133] FIG. 12 is a structural schematic diagram of yet another protective structure according to some embodiments of the present application.

[0134] Continuing to refer to FIG. 12, in some embodiments, the protective structure 50 is provided with a reinforcing portion 53 that protrudes from a surface of the protective structure 50 facing away from the detection assembly 40.

[0135] Specifically, the reinforcing portion 53 may be a reinforcing rib provided on the surface of the protective structure 50 facing away from the detection assembly 40. The reinforcing portion 53 can reduce deformation of the protective structure 50, increase the pressure resistance of the protective structure 50, and further improve the service life of the protective structure 50. The reinforcing portion 53 and the protective structure 50 may be an integrally molded structure. The protective structure 50 is integrally molded with the reinforcing portion 53 by a stamping process, which simplifies the manufacturing process and does not require additional materials. The reinforcing portion 53 is formed protruding from the surface of the protective structure 50 facing away from the detection assembly 40, thereby avoiding contact between the reinforcing portion 53 and the detection assembly 40 and reducing the risk of interference between the protective structure 50 and the detection assembly 40.

[0136] In the above technical proposal, the reinforcing portion 53 is provided in the protective structure 50, thereby increasing the pressure resistance of the protective structure 50 and further improving the protective effect of the protective structure 50.

[0137] In some embodiments, the material of protective structure 50 is an insulating material.

[0138] The battery cells 7 are continuously charged and discharged during use, and a lot of heat is generated during the charging and discharging process of the battery cells 7. There is a risk of contact interference between the protective structure 50 and the detection assembly 40. For example, the insulating and heat-insulating material may be polytetrafluoroethylene, polyphenylene sulfide, polyether ether ketone, polyphenylene ester, etc. The present application does not limit the specific material, and it may be selected according to the actual situation.

[0139] By manufacturing the protective structure 50 using an insulating and heat-insulating material, it is possible to reduce the impact of heat generated during the use of the battery cells 7 on the protective structure 50, thereby improving the service life of the protective structure 50. It is also possible to reduce the risk of a short circuit caused by contact interference between the protective structure 50 and the detection assembly 40, which may further affect normal use of the detection assembly 40.

[0140] In some embodiments of the present application, the present application further provides a battery including the battery cell in the above technical solution.

[0141] In some embodiments of the present application, the present application further provides a power consuming device, including the battery cell in the above technical solution for supplying electric energy.

[0142] In order to better understand the battery cell according to the embodiment of the present application, based on the same inventive concept, an embodiment of said battery cell in practical application will now be illustrated and described.

[0143] An embodiment of the present application provides a battery cell 7, which includes a shell, an electrode assembly 10, an end cover, an electrode terminal 31, an insulating member 33, a detection assembly 40, and a protective structure 50. The shell has an opening and an accommodation chamber, the electrode assembly 10 is accommodated in the accommodation chamber, and the end cover is fitted over and coupled to the opening of the shell. The end cover is provided with a recess 32, which is recessed from the surface of the end cover away from the accommodation chamber in a direction facing the accommodation chamber, at least a part of the detection assembly 40 is accommodated in the recess 32, and the protective structure 50 covers at least a part of the surface of the detection assembly 40. The material of the protective structure 50 is an insulating and heat-insulating material.

[0144] Furthermore, the electrode terminal 31 protrudes from the surface of the end cover on the side away from the storage chamber, the electrode terminal 31 is electrically connected to the tab of the electrode assembly 10, and the detection assembly 40 is electrically connected to the electrode terminal 31.

[0145] Furthermore, an insulating member 33 is used to insulate the electrode terminal 31 from the end cover, and the detection assembly 40 includes a sensing member 41 and a conductor 42 connected to each other, and the sensing member 41 is electrically connected to the electrode terminal 31 via the conductor 42.

[0146] In the above technical solution, the battery cell 7 is provided with the detection assembly 40 and the protective structure 50 for protecting the detection assembly 40, so that the detection assembly 40 can detect the working state of the battery cell 7 in real time, and can provide a prompt early warning for abnormal parameters during the operation of the battery cell 7, so that the corresponding safety mechanism or staff can respond in a timely manner, and further improve the safety and reliability of the battery cell 7. The protective structure 50 covers at least a part of the surface of the detection assembly 40, and can reduce the risk of the detection assembly 40 being damaged during the manufacturing or use of the battery cell 7.

[0147] Furthermore, where no contradiction exists, the embodiments and features in the embodiments of the present application may be combined with each other.

[0148] It should be noted that the above examples are merely illustrative of the technical solution of the present application, and are not intended to limit it. Although the present application has been described in detail with reference to the above examples, those skilled in the art may still modify the technical solutions described in the above examples, or equivalently replace some or all of the technical features thereof, but it should be understood that these modifications or replacements do not cause the essence of the corresponding technical solution to depart from the scope of the technical solution of each embodiment of the present application, and are included in the scope of the claims and the specification of the present application. In particular, as long as there is no structural contradiction, each technical feature mentioned in the embodiments of the present application may be arbitrarily combined. The present application is not limited to the specific embodiments disclosed in the specification, but includes all technical solutions that fall within the scope of the claims. [Explanation of symbols]

[0149] 1 vehicle 2 batteries 3. Controller 4 Motors 5. Cabinet 5a First housing part 5b Second housing part 5c Storage Space 6 Battery Module 7 Battery Cells 10 Electrode Assembly 20. Housing 30 1st wall 31 Electrode terminal 32 Recess 33 Insulating materials 331 Convex 332 Through hole 40 Detection Assembly 41 Sensing material 42 Conductor 43 Connection 50 Protective structure 51 Main body 52 Side 53 Reinforcement

Claims

1. A battery cell, a housing having a chamber; an electrode assembly housed in the housing; a detection assembly connected to the housing for detecting an operating state of the battery cell; a protective structure covering at least a portion of a surface of the detection assembly; A battery cell characterized by:

2. the housing includes a first wall, the detection assembly being connected to the first wall; The battery cell according to claim 1 .

3. the detection assembly is located on a side of the first wall away from the chamber; The battery cell according to claim 2 .

4. the housing includes an electrode terminal, the electrode terminal protruding from a surface of the first wall away from the chamber, the electrode terminal being electrically connected to a tab of the electrode assembly, and the detection assembly being electrically connected to the electrode terminal; The battery cell according to claim 3 .

5. a surface of the protection structure that is spaced apart from the first wall along a thickness direction of the first wall is not higher than a surface of the electrode terminal that is spaced apart from the first wall; 5. The battery cell according to claim 4.

6. the detection assembly is located on a side of the first wall facing the chamber; The battery cell according to claim 2 .

7. a recess is provided in the first wall, and the recess is formed by being recessed from a surface of the first wall on a side away from the storage chamber along a direction facing the storage chamber, Alternatively, the recess is formed by being recessed from a surface of the first wall facing the storage chamber along a direction away from the storage chamber, At least a portion of the detection assembly is received in the recess. The battery cell according to any one of claims 2 to 6.

8. The shape and dimensions of the protective structure correspond to the shape and dimensions of the contour of the recess. The battery cell according to claim 7 .

9. Along a thickness direction of the first wall, a surface of the protective structure facing away from the first wall is not higher than a surface of the first wall facing away from the storage chamber. The battery cell according to claim 7 .

10. The protective structure includes a main body portion, the main body portion being provided to cover at least a portion of a surface of the detection assembly. The battery cell according to any one of claims 1 to 6.

11. The protective structure further includes a side portion, the side portion being connected around the body portion to form an accommodation space for accommodating the detection member. The battery cell according to claim 10 .

12. the protective structure is a membrane layer structure, the membrane layer structure being attached to at least a portion of a surface of the detection assembly; The battery cell according to any one of claims 1 to 6.

13. The protective structure is connected to the housing by engagement or adhesion. The battery cell according to claim 1 .

14. the battery cell further includes an insulating member for insulating the electrode terminal and the first wall, The detection assembly includes a sensing member and a conductive wire connected to each other, and the sensing member is electrically connected to the electrode terminal via the conductive wire.

6. The battery cell according to claim 4 or 5.

15. a connection portion is provided on a surface of the electrode terminal away from the first wall, and the conducting wire is connected to the connection portion to electrically connect the sensing member and the electrode terminal. The battery cell according to claim 14 .

16. the insulating member has a protrusion protruding from a surface of the electrode terminal on a side away from the first wall, the protrusion being used to separate the surface of the electrode terminal on the side away from the first wall from the connection portion.

16. The battery cell according to claim 15.

17. a through hole is provided in the insulating member, and the conductive wire is connected to the electrode terminal via the through hole; The battery cell according to claim 14 .

18. The housing includes a shell and an end cover, the shell having an opening, and the end cover is adapted to cover the opening; The end cover is a first wall of the housing. The battery cell according to claim 2 .

19. a reinforcing portion is provided on the protective structure, the reinforcing portion being formed to protrude from a surface of the protective structure facing away from the detection assembly; The battery cell according to claim 1 .

20. The material of the protective structure is an insulating and heat-insulating material. The battery cell according to claim 1 .

21. A battery cell according to any one of claims 1 to 20, A battery characterized in that

22. A battery cell according to any one of claims 1 to 20 for supplying electrical energy.

1. A power consuming device comprising:

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