CN217485595U - Battery module, battery, and power consumption device - Google Patents

Abstract

The application provides a battery module, battery and power consumption device, has better insulating properties. The battery module includes: the battery comprises a plurality of battery monomers, wherein electrode terminals are arranged on end covers of the battery monomers; the two first side plates are oppositely arranged along a first direction so as to fix the plurality of battery monomers in the first direction, the surfaces of the first side plates are vertical to the surface of the end cover, the first side plates are coated with protective layers, and the protective layers are used for insulation protection.

Description

Battery module, battery, and power consumption device

Technical Field

The present application relates to the field of battery technologies, and in particular, to a battery module, a battery, and an electric device.

Background

With the rapid development of power batteries, the requirement on the safety of the battery module is higher and higher, and the insulation performance is an important aspect for ensuring the safety of the battery module. Therefore, how to improve the insulation performance of the battery module is a problem to be solved.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a battery module, a battery and an electric device, which have excellent insulating property.

In a first aspect, a battery module is provided, the battery module including: the battery comprises a plurality of battery monomers, wherein electrode terminals are arranged on end covers of the battery monomers; the two first side plates are oppositely arranged along a first direction so as to fix the plurality of battery monomers in the first direction, the surfaces of the first side plates are vertical to the surface of the end cover, the first side plates are coated with protective layers, and the protective layers are used for insulation protection.

In an embodiment of the application, the first side plate is coated with a protective layer for insulation protection. Therefore, insulation between the battery cells and the first side plate can be effectively achieved. The protective layer is coated on the first side plate, namely, the protective layer is integrally formed on the whole surface of the first side plate, so that all-around protection can be realized, and the insulating property of the battery module is better.

In one implementation, the battery module further includes: the two second side plates are oppositely arranged along a second direction so as to fix the plurality of battery monomers in the second direction, the surfaces of the second side plates are perpendicular to the surface of the end cover, the second direction is perpendicular to the first direction, and the protective layer is coated on the second side plates.

In this embodiment, the second side panel is coated with a protective layer. Therefore, insulation between the battery cell and the second side plate can be effectively achieved. The protective layer is coated on the second side plate, namely, the protective layer is integrally formed on the whole surface of the second side plate, so that all-around protection can be realized, and the insulating property of the battery module is better.

In one implementation, the battery cell further includes a case that is coated with the protective layer. Thereby further enhancing the insulation between the battery cells and the first side plate and/or the second side plate.

In one implementation, one end of the case is open, the end cap is used to cover the opening to encapsulate the battery cell, and the electrode terminal includes an end face and a side face extending from the end face to the end cap, wherein the outer surface of the case, the surface of the end cap facing away from the inside of the battery cell, and the side face of the electrode terminal are coated with the protective layer.

The plurality of battery cells need to be insulated from each other, and the battery cells are also insulated from the first side plate and/or the second side plate of the battery module, so that the protective layer is also coated on the outer surface of the shell of the battery cells, the surface of the end cover, which is away from the interior of the battery cells, and the side surface of the electrode terminal, namely the protective layer is integrally formed on the whole surface of the battery cells except for the end surface of the electrode terminal, and the insulating property of the battery module can be further improved.

In one implementation, the battery module further includes: and a confluence member connected to the electrode terminal, wherein the confluence member is coated with the protective layer except for a region connected to the electrode terminal. So as to realize the insulation between the bus bar part and the electrode terminal and further improve the insulation performance of the battery module.

In one implementation, the bus member is connected with the electrode terminal by welding, wherein a region of the bus member except for the welding region is coated with the protective layer. The connection between the bus member and the electrode terminal is realized by welding, and the connection is easy to realize and has lower cost.

In one implementation, the overcoat layer is formed by vapor deposition.

On one hand, compared with a mode of adding other structures in the battery module to perform insulation protection on the battery module, the protection layer obtained in the mode has smaller thickness, so that the space and the weight of the battery module can be reduced, the cost is saved, and the energy density of the battery module is improved; on the other hand, compared with the mode that the surface of one side, facing the battery monomer, of the first side plate and/or the second side plate is covered with the plastic film of the high-molecular organic polymer to insulate and protect the battery module, the protective layer does not affect the surface bonding strength of the first side plate and/or the second side plate, the bonding strength between the battery monomer and the first side plate and/or the second side plate of the battery module can be improved, the mechanical strength of the battery module is further improved, and meanwhile, the thermal resistance between the battery monomer and the air is reduced to improve the heat dissipation capacity of the battery monomer; on the other hand, the preparation method of the protective layer is simple, high in efficiency and easy for large-scale production.

In one implementation, the protective layer has a thickness of 0.01 μm to 1.5 mm. The thickness of the protective layer is large, extra space and weight can be occupied, the cost is increased, and the protective layer is difficult to form on the surface of the part of the battery module due to the small thickness, so that the protective effect is influenced. The thickness of the protective layer is set between 0.01 mu m and 1.5mm, so that the occupied space, weight and cost can be reduced while the good protective effect is ensured.

In one implementation, the protective layer has a thickness of 0.1 μm to 10 μm. Under the condition that the process allows, the thickness of the protective layer can be further between 0.1 μm and 10 μm, so that the occupied space, weight and cost are further reduced while good protection effect is ensured.

In one implementation, the protective layer is an inorganic protective layer, or the protective layer is a composite protective layer including an inorganic substance.

The inorganic protective layer or the composite protective layer comprising inorganic matters has good heat resistance, and can enhance the high-temperature resistance of the battery module while ensuring the insulating property of the battery module, thereby solving the problem of failure of the battery module under the thermal runaway or other high-temperature conditions.

In one implementation, the plurality of battery cells are arranged along the first direction. Because two first curb plates set up along first direction X relatively, and first direction X is the free range direction of a plurality of batteries, consequently first curb plate can effectively fix a plurality of battery monomers, avoids a plurality of battery monomers to rock on first direction X, improves battery module's structural stability.

In a second aspect, a battery is provided, which includes the battery module of the first aspect or any implementation manner of the first aspect.

In a third aspect, a power consuming apparatus is provided, where the power consuming apparatus includes the battery in the second aspect or any implementation manner of the second aspect, and the battery is used to supply power to the power consuming apparatus.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for a person skilled in the art to obtain other drawings based on the drawings without any creative effort.

Fig. 1 is a schematic view of a vehicle according to an embodiment of the present application.

Fig. 2 is an exploded view of a battery module according to an embodiment of the present application.

Fig. 3 is a schematic structural diagram of a first side plate according to an embodiment of the present application.

Fig. 4 is a schematic structural diagram of a second side plate according to an embodiment of the present application.

Fig. 5 is a schematic structural diagram of a battery cell according to an embodiment of the present application.

Fig. 6 is a schematic view of a positional relationship between the battery cells and the bus bar member and the first side plate according to the embodiment of the present application.

Fig. 7 is a schematic view of a positional relationship between a battery cell and a second side plate according to an embodiment of the present application.

In the drawings, the drawings are not necessarily to scale.

Detailed Description

Embodiments of the present application will be described in further detail below with reference to the drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the application and are not intended to limit the scope of the application, i.e., the application is not limited to the described embodiments.

In the description of the present application, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," and the like, indicate an orientation or positional relationship that is merely for convenience in describing the application and to simplify the description, and do not indicate or imply that the referenced devices or elements must be in a particular orientation, constructed and operated in a particular orientation, and therefore should not be construed as limiting the application. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. "vertical" is not strictly vertical, but is within the tolerance of the error. "parallel" is not strictly parallel but within the tolerance of the error.

The following description is given with the directional terms as they are used in the drawings and not intended to limit the specific structure of the present application. In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood as appropriate by one of ordinary skill in the art.

The term "and/or" in this application is only one kind of association relationship describing the association object, and means that there may be three kinds of relationships, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this application generally indicates that the preceding and following associated objects are in an "or" relationship.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application in the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions. The terms "first," "second," and the like in the description and claims of this application or in the above-described drawings are used for distinguishing between different elements and not for describing a particular sequential or chronological order.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by a person skilled in the art that the embodiments described herein can be combined with other embodiments.

Reference herein to a battery refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity. For example, the battery referred to in the present application may include a battery module or a battery pack, etc. Batteries generally include a case for enclosing one or more battery cells. The box can avoid liquid or other foreign matters to influence the charge or discharge of battery cells. The battery cell may include, for example, a lithium ion secondary battery, a lithium ion primary battery, a lithium sulfur battery, a sodium lithium ion battery, a sodium ion battery, a magnesium ion battery, or the like. The battery cells may be in the form of cylinders, flat bodies, cuboids, or other regular or irregular shapes. In general, a battery cell may also be referred to as a cell.

The development of battery technology needs to consider various design factors, such as energy density, cycle life, discharge capacity, charge and discharge rate, and other performance parameters, and also needs to consider the safety of the battery.

In some battery production and processing technologies, a plurality of battery cells (cells) may be integrated into a battery module (module), also called a battery module, and then the battery module is mounted in a box of a battery to form a battery pack (pack), also called a battery for short. In other production and processing technologies, a plurality of battery cells may also be directly mounted in a box to form a battery pack, and this intermediate state of the battery module is removed to reduce the weight of the battery pack and increase the energy density of the battery, so the technology is also referred to as a cell to pack (cell to pack) packaging technology.

The battery in this application includes at least one battery module, and every battery module includes a plurality of battery monomer, and a plurality of battery monomer are fixed through battery module's first curb plate and/or second curb plate. In order to meet the requirement of mechanical strength, the housing of the battery cell is usually made of aluminum or steel, and therefore insulation protection measures need to be adopted between the battery cell and the first side plate and/or the second side plate of the battery module, otherwise safety problems are easily caused.

In view of this, the present application provides a battery module, a battery and a power consumption device, wherein the first side plate of the battery module has an insulation protection layer thereon, so that insulation between the battery cell and the first side plate can be effectively achieved. The protective layer is coated on the first side plate, namely, the protective layer is integrally formed on the whole surface of the first side plate, so that the insulating property of the battery module is better.

The technical scheme described in the application is suitable for various electric equipment using batteries, such as vehicles, mobile phones, portable equipment, notebook computers, ships, spacecrafts, electric toys, electric tools and the like. The vehicle can be a fuel oil vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle or a range-extended vehicle and the like; spacecraft include aircraft, rockets, space shuttles, and spacecraft, among others; electric toys include stationary or mobile electric toys, such as game machines, electric car toys, electric ship toys, electric airplane toys, and the like; the electric power tools include metal cutting electric power tools, grinding electric power tools, assembly electric power tools, and electric power tools for railways, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, electric impact drills, concrete vibrators, and electric planers.

For convenience of explanation, the following description will be given taking an electric device as an example of a vehicle.

For example, as shown in fig. 1, which is a schematic structural diagram of a vehicle 1 according to the present application, the vehicle 1 may be a fuel automobile, a gas automobile, or a new energy automobile, and the new energy automobile may be a pure electric automobile, a hybrid electric automobile, or an extended range automobile, etc. The vehicle 1 may be provided with a motor 11, a controller 12 and a battery 10, the controller 12 being configured to control the battery 10 to supply power to the motor 11. For example, the battery 10 may be provided at the bottom or the head or tail of the vehicle 1. The battery 10 may be used for power supply of the vehicle 1, for example, the battery 10 may be used as an operation power source of the vehicle 1 for a circuit system of the vehicle 1, for example, for power demand for operation in starting, navigation, and running of the vehicle 1. Alternatively, the battery 10 may be used not only as an operation power source of the vehicle 1 but also as a driving power source of the vehicle 1 instead of or in part of fuel or natural gas to provide driving power to the vehicle 1.

In order to meet different power requirements, the battery 10 may include a plurality of battery cells 20, wherein the plurality of battery cells 20 may be connected in series, in parallel, or in a series-parallel manner, where a series-parallel manner refers to a mixture of series connection and parallel connection. Alternatively, a plurality of battery cells 20 may be connected in series, in parallel, or in series-parallel to form a battery module 30, and a plurality of battery modules 30 may be connected in series, in parallel, or in series-parallel to form a battery 10. That is, the plurality of battery cells 20 may be directly assembled into the battery 10, or the battery module 30 may be assembled first, and then the battery module 30 may be assembled into the battery 10.

As an example, fig. 2 shows an exploded view of the battery module 30 of the embodiment of the present application. As shown in fig. 2, the battery module 30 includes a plurality of battery cells 20 and two first side plates 31. The two first side plates 31 are oppositely disposed in the first direction X to fix the plurality of battery cells 20 in the first direction X. The end cap 21 of the battery cell 20 is provided with the electrode terminal 22, and the surface of the first side plate 31 is perpendicular to the surface of the end cap 212 of the battery cell 20.

In the embodiment of the present application, as shown in fig. 3, the first side plate 31 is coated with a protective layer 40, and the protective layer 40 is used for insulation protection. Therefore, insulation between the battery cell 20 and the first side plate 31 can be effectively achieved. The protective layer 40 is coated on the first side plate 31, that is, the protective layer 40 is integrally formed on the entire surface of the first side plate 31, so that the protective layer can protect the battery module 30 in all directions, and the insulating property of the battery module is excellent.

In one implementation, as shown in fig. 2, the battery module 30 further includes two second side plates 32, and the two second side plates 32 are oppositely disposed along a second direction Y to fix the plurality of battery cells 20 in the second direction Y, the second direction Y is perpendicular to the first direction X, and a surface of the second side plate 32 is perpendicular to a surface of the end cap 21.

Wherein the second side panel 32 is coated with a protective layer 40, as shown in fig. 4. Therefore, insulation between the battery cell 20 and the second side plate 32 can be effectively achieved. The protective layer 40 is coated on the second side plate 32, that is, the protective layer 40 is integrally formed on the entire surface of the second side plate 32, so that the protection can be performed in all directions, and the insulation performance of the battery module 30 is excellent.

In the embodiment of the present application, the first side plate 31 is covered with the protective layer 40, that is, the protective layer 40 is formed on all surfaces of the first side plate 31, and the protective layer 40 is integrally formed on each surface of the first side plate 31. Similarly, the second side panel 32 being coated with the protective layer 40 means that the second side panel 32 has the protective layer 40 on all surfaces thereof, and the protective layer 40 is integrally formed on each surface of the second side panel 32 as one body.

For example, the protective layer 40 may be formed on each surface of the first side plate 31 and/or the second side plate 32 by deposition, such as vapor product, spray coating, or sputtering, before the plurality of battery cells 20 are assembled to form the battery module 30. The protective layer 40 formed in this manner can achieve all-round insulation protection of the battery module 30 without distinction.

On one hand, compared with a mode of adding other structures in the battery module 30 to insulate and protect the battery module 30, the protective layer 40 obtained in this way has a smaller thickness, so that the space and the weight of the battery module 20 can be reduced, the cost is saved, and the energy density of the battery module 30 is improved; on the other hand, compared with a mode that a plastic film of a high molecular organic polymer is covered on the surface of the first side plate 31 and/or an insulating plate is arranged on the second side plate 32 towards the battery cell 20 to insulate and protect the battery module 30, the protective layer 40 does not affect the surface bonding strength of the first side plate 31 and/or the second side plate 32, and the bonding strength between the battery cell 20 and the first side plate 31 and/or the second side plate 32 of the battery module 30 can be improved, so that the mechanical strength of the battery module 30 is improved, and meanwhile, the thermal resistance between the battery cell 20 and the air is reduced to improve the heat dissipation capacity of the battery cell 20; in addition, the preparation method of the protective layer 40 is simple, high in efficiency and easy for large-scale production.

In one implementation, as shown in fig. 2, a plurality of battery cells 20 are arranged in a first direction X. Because two first curb plates 31 set up along first direction X relatively, and first direction X is a plurality of battery monomer 20's array orientation, consequently first curb plate 31 can effectively fix a plurality of battery monomer 20, avoids a plurality of battery monomer 20 to rock on first direction X, improves battery module 30's structural stability.

At this time, the first side plate 31 is also commonly referred to as an end plate of the battery module 30, and correspondingly, the second side plate 32 is referred to as a side plate of the battery module 30. For example, as shown in fig. 2, a plurality of battery cells 20 are arranged in the first direction X and fixed by two first side plates 31 in the first direction X. The two second side plates 32 fix the plurality of battery cells 30 in the second direction Y. The first side plate 31 and the second side plate 32 are perpendicular to the end cap 21 of the battery cell 20, and the end cap 21 of the battery cell 20 is provided with the electrode terminal 22.

In one implementation, the battery cell 20 further includes a casing 22, and the casing 22 is coated with a protective layer. Thereby further enhancing insulation between the battery cell 20 and the first side plate 31 and/or the second side plate 32.

For example, as shown in fig. 5, one end of the case 23 is open, and the end cap 21 is used to cover the opening to enclose the battery cell 20. The electrode terminal 22 includes an end surface 221, and a side surface 222 extending from the end surface 221 to the end cap 21. Wherein the outer surface of the case 23, the surface of the end cap 21 facing away from the inside of the battery cell 20, and the side 222 of the electrode terminal 22 are coated with the protective layer 40.

The plurality of battery cells 20 need to be insulated from each other, and the battery cells 20 and the first side plate 31 and/or the second side plate 32 of the battery module 30 need to be insulated from each other, so that the protective layer 40 is also covered on the outer surface of the housing 23 of the battery cell 20, the surface of the end cover 21 facing away from the inside of the battery cell 20, and the side surface 222 of the electrode terminal 22, that is, the protective layer 40 is integrally formed on the entire surface of the battery cell 20 in a region excluding the end surface 221 of the electrode terminal 22, and the insulating performance of the battery module 30 can be further improved.

In one implementation, the battery module 30 further includes a bus member 33. The bus bar member 33 is connected to the electrode terminal 22, and the bus bar member 30 is covered with a protective layer 40 except for a region 331 connected to the electrode terminal 22.

For example, as shown in fig. 2 and 6, the bus bar member 33 is connected to the electrode terminals 22 of the battery cells 20 for electrical connection between the plurality of battery cells 20. The protection layer 40 is coated on the bus member 33 except for the region 331 connected to the electrode terminal 22 to achieve insulation between the bus member 33 and the electrode terminal 22, further improving the insulation performance of the battery module 30.

The bus bar member 33 may be connected to the electrode terminals 22 of the battery cells 20 by welding, for example, and thus is easy to implement and low in cost. At this time, regions of the bus member 33 except for the welding regions 331 are coated with the protective layers 40 to ensure insulation between the bus member 33 and the non-connection regions of the battery cells 20. Generally, the bus bar member 33 is welded to the end surface 221 of the electrode terminal 22.

Also, the region of the bus member 33 other than the region 331 connected to the electrode terminal 22 is coated with the protective layer 40 means that the protective layer 40 is formed as one body in all regions of the bus member 33 other than the region 331 connected to the electrode terminal 22.

For example, after the plurality of battery cells 20 are assembled into the battery module 30, the protective layer 40 may be formed on all regions of the bus member 33 except for the region connected to the electrode terminal 22 by deposition, painting, or sputtering, etc.

As shown in fig. 6 and 7, the first end plate 31 and the housing 23 of the battery cell 20 and the second end plate 32 and the housing 23 of the battery cell 20 may be connected by, for example, a structural adhesive 34. The structural adhesive 34 is a double-sided adhesive, one side of which is bonded to the case 23 of the battery cell 20, and the other side is bonded to the first side plate 31 and/or the second side plate 32. Compared with the mode that the plastic film of the high-molecular organic polymer covers the surface of one side, facing the battery monomer 20, of the first side plate 31 and/or the second side plate 32 to insulate and protect the battery module 30, the protective layer 40 does not affect the surface bonding strength of the first side plate 31 and/or the second side plate 32, the bonding strength between the battery monomer 20 and the first side plate 31 and/or the second side plate 32 of the battery module 30 can be improved, the mechanical strength of the battery module 30 is further improved, and meanwhile, the thermal resistance between the battery monomer 20 and the air is reduced to improve the heat dissipation capacity of the battery monomer 20

The thickness of the protective layer 40 is not limited in this application. However, the protective layer 40 has a large thickness, which occupies extra space, takes up weight and increases cost, and the protective effect is affected by the difficulty in forming a uniform and dense protective layer 40 with a small thickness. Thus, in one implementation, the thickness of the protective layer 40 is 0.01 μm to 1.5mm, which reduces the space, weight and cost occupied while ensuring good protection.

Under the conditions allowed by the process, in one implementation, the thickness of the protective layer 40 can be further between 0.1 μm and 10 μm, so that the occupied space, weight and cost are further reduced while a good protective effect is ensured.

In one implementation, the protective layer 40 may be an inorganic protective layer, for example, the material thereof may be at least one of aluminum oxide, silicon oxide, zirconium oxide, hafnium oxide, titanium oxide, magnesium oxide, zinc oxide, boehmite, aluminum hydroxide, magnesium hydroxide, and lithium fluoride.

Alternatively, in another implementation, the protective layer 40 may be a composite protective layer including inorganic substances, such as an organic-inorganic hybrid protective layer, an inorganic-organic hybrid protective layer, or other complexes or mixtures of organic and inorganic substances.

Wherein, the material of the inorganic protective layer or the composite protective layer can be selected according to actual requirements. The proportion of each component in the mixture material can be selected according to actual needs. For example, the compositeThe protective layer can be made of ethylene glycol aluminum Al- (O-CH) ₂ -CH ₂ -O) _x And the like.

The inorganic protective layer or the composite protective layer including inorganic substances has good heat resistance, and can enhance the high temperature resistance of the battery module 30 while ensuring the insulation performance of the battery module 30, thereby solving the problem of failure of the battery module under thermal runaway or other high temperature conditions.

The embodiment of the present application also provides a battery 10, and the battery 10 includes the battery module 30 in each of the foregoing embodiments. Due to the adoption of the protective layer 40, the insulating property of the battery module 30 is improved, and the safety performance of the battery 10 is further improved.

The embodiment of the present application further provides an electric device 50, where the electric device 50 includes the battery 10 in the foregoing embodiments, and the battery 10 is used to supply power to the electric device 50.

While the application has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the application. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present application is not intended to be limited to the particular embodiments disclosed herein but is to cover all embodiments that may fall within the scope of the appended claims.

Claims (13)

1. A battery module, characterized in that the battery module comprises:

the battery comprises a plurality of battery monomers, wherein electrode terminals are arranged on end covers of the battery monomers;

the two first side plates are oppositely arranged along a first direction so as to fix the plurality of single batteries in the first direction, the surfaces of the first side plates are perpendicular to the surfaces of the end covers, and the first side plates are wrapped with protective layers for insulation protection.

2. The battery module of claim 1, further comprising:

two second curb plates, set up relatively along the second direction, with fix in the second direction a plurality of battery monomer, the surface of second curb plate with the surface of end cover is perpendicular, the second direction with first direction is perpendicular, the cladding of second curb plate has the inoxidizing coating.

3. The battery module of claim 1 or 2, wherein the battery cell further comprises a housing, the housing being coated with the protective layer.

4. The battery module of claim 3, wherein the housing is open at one end, the end cap is configured to cover the opening to encapsulate the battery cell, the electrode terminal comprises an end face and a side face extending from the end face to the end cap, and wherein an outer surface of the housing, a surface of the end cap facing away from an interior of the battery cell, and the side face of the electrode terminal are coated with the protective layer.

5. The battery module according to claim 1 or 2, characterized in that the battery module further comprises:

and a bus member connected to the electrode terminal, wherein the bus member is coated with the protective layer except for a region connected to the electrode terminal.

6. The battery module according to claim 5, wherein the bus members are connected to the electrode terminals by welding, wherein regions of the bus members other than the welded regions are coated with the protective layers.

7. The battery module according to claim 1 or 2, wherein the protective layer is formed by deposition, spraying, or sputtering.

8. The battery module according to claim 1 or 2, wherein the protective layer has a thickness of 0.01 μm to 1.5 mm.

9. The battery module according to claim 1 or 2, wherein the protective layer has a thickness of 0.1 μm to 10 μm.

10. The battery module according to claim 1 or 2, wherein the protective layer is an inorganic protective layer, or a composite protective layer including an inorganic substance.

11. The battery module according to claim 1 or 2, wherein the plurality of battery cells are arranged in the first direction.

12. A battery, comprising:

at least one battery module according to any one of claims 1 to 11.

13. An electrical consumer, characterized in that the electrical consumer comprises a battery according to claim 12 for powering the electrical consumer.

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