CN218548625U - Shell assembly, battery module, battery and power utilization device - Google Patents

Abstract

The application provides a shell subassembly, battery module, battery and power consumption device, above-mentioned shell subassembly includes casing and lid, the casing has the opening and includes the end plate, the lid includes lid main part and first protection piece, the opening part of casing is located to lid main part lid, first protection piece is including the first connecting portion and the first part that blocks that each other become the contained angle and connect, first connecting portion are connected with the lid main part, first part that blocks sets up between end plate and lid main part to the clearance of closed end plate and lid main part. This application is through being connected first connecting portion and lid bulk phase, and extend first stop part to the end plate by first connecting portion, with the clearance of closed end plate and lid bulk phase, because first connecting portion and first stop part become the contained angle each other and connect, make the difficult perk of first stop part, thereby effectively prevent to take place the condition that first stop part breaks away from the clearance of end plate and lid bulk phase, the sealing performance of shell subassembly has effectively been improved, and then make the battery can reach higher protection level requirement.

Description

Shell assembly, battery module, battery and power utilization device

Technical Field

The application belongs to the technical field of batteries, and particularly relates to a shell assembly, a battery module, a battery and an electric device.

Background

With the rapid development of new energy technologies, electric vehicles gradually replace fuel vehicles to become mainstream transportation tools for people. The battery is used as a power source of the electric automobile, and people require the battery to reach a higher protection level in order to ensure the safety performance of the electric automobile, however, the battery cannot meet the protection level requirement due to the poor sealing performance of the battery.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the application is to provide a shell subassembly, a battery module, a battery and a power consumption device, so as to solve the technical problem that the battery cannot meet the protection level requirement due to poor sealing performance of the battery in the related art.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions: the utility model provides a shell subassembly, includes casing and lid, the casing has the opening and includes the end plate, the lid includes lid main part and first protection piece, lid main part lid is located the opening part of casing, first protection piece includes first connecting portion and the first portion of stopping that each other becomes the contained angle and connect, first connecting portion with the lid main part is connected, first stop by first connecting portion extend to the end plate, in order to seal the end plate with the clearance of lid main part.

The housing assembly provided by the embodiment of the application has at least the following beneficial effects: compared with the prior art, the shell subassembly that this application embodiment provided is through being connected first connecting portion and lid main part, and set up first stop part between end plate and lid main part, in order to seal the clearance of end plate and lid main part, because first connecting portion and first stop part become the contained angle each other and connect, make the difficult perk of first stop part, thereby effectively prevent to take place the condition that first stop part breaks away from the clearance of end plate and lid main part, the sealing performance of shell subassembly has effectively been improved, and then make the battery that adopts above-mentioned shell subassembly can reach higher protection level requirement.

In some embodiments of the present application, the housing further includes a side plate disposed at one side of the end plate, and a flange is disposed at one side of the cover main body close to the side plate, and the flange is connected to the side plate.

Through adopting above-mentioned technical scheme, effectively seal the clearance of lid main part and curb plate to the sealing performance of shell subassembly has further been improved, makes the battery that adopts above-mentioned shell subassembly can reach higher protection level requirement.

In some embodiments of the present application, the housing further includes a side plate disposed on one side of the end plate, the cover body includes a second protection member, the second protection member includes a second connecting portion and a second blocking portion connected at an included angle, the second connecting portion is connected with the cover body, and the second blocking portion is extended to be connected with the side plate by the second connecting portion to close a gap between the side plate and the cover body.

Through adopting above-mentioned technical scheme, because second connecting portion and second stop part each other become the contained angle and connect for the difficult perk of second stop part, thereby effectively prevent the second stop part and break away from the condition in curb plate and the clearance of lid main part, further improved the sealing performance of shell subassembly, and then make the battery that adopts above-mentioned shell subassembly can reach higher protection level requirement.

In some embodiments of the present application, the second guard has a thickness in a range of 0.3mm to 0.6mm.

Through adopting above-mentioned technical scheme, can guarantee on the one hand that the second protection piece has sufficient intensity, prevent the condition that the second barrier portion perk from appearing more effectively to further improved shell subassembly's sealing performance, on the other hand also can avoid leading to battery module's height dimension and width size to increase by a wide margin because of the thickness of second protection piece is too big, thereby effectively reduced the second protection piece and to the harmful effects that battery module's energy density caused.

In some embodiments of the present application, the cover main body covers the second connection portion; and/or the second blocking part is connected to the surface of the side plate facing the inner cavity of the shell component.

Through adopting above-mentioned technical scheme, can avoid the second protection piece to expose, effectively reduce the second protection piece and collide with foreign object and lead to the risk that the second protection piece drops to the sealing reliability of shell subassembly has effectively been improved.

In some embodiments of the present application, the second connecting portion is bonded to the cap body; and/or the second blocking part is bonded with the side plate.

Through adopting above-mentioned technical scheme, not only effectively guaranteed the connection steadiness of second protection piece, be more convenient for assemble the second protection piece moreover to the assembly efficiency of shell subassembly has effectively been improved.

In some embodiments of the present application, the first guard has a thickness in a range of 0.3mm to 0.6mm.

Through adopting above-mentioned technical scheme, can guarantee on the one hand that first protection piece has sufficient intensity, prevent the condition that first barrier section perk from appearing more effectively to the sealing performance of shell subassembly has further been improved, on the other hand also can avoid leading to battery module's height dimension and width size to increase by a wide margin because of the thickness of first protection piece is too big, thereby effectively reduced the harmful effects that first protection piece caused to battery module's energy density.

In some embodiments of the present application, the cover body covers the first connection portion.

Through adopting above-mentioned technical scheme, can avoid first connecting portion to expose, effectively reduce first connecting portion and foreign object collision and lead to the risk that first protection piece drops to effectively improve the sealing reliability of shell subassembly, and then make the battery that adopts above-mentioned shell subassembly can reach higher protection level requirement.

In some embodiments of the present application, the thickness of the cap body ranges from 0.075mm to 0.3mm.

Through adopting above-mentioned technical scheme, under the prerequisite of guaranteeing that the lid main part has sufficient insulation protection performance, can avoid leading to battery module's height dimension to increase by a wide margin because of the thickness of lid main part is too big to effectively reduced the lid main part and caused harmful effects to battery module's energy density.

In some embodiments of the present application, the first connecting portion is bonded to the cap body.

Through adopting above-mentioned technical scheme, not only effectively guaranteed the connection steadiness between first connecting portion and the lid main part, be more convenient for assemble first protection piece moreover to the assembly efficiency of shell subassembly has effectively been improved.

In some embodiments of the present application, a side of the first blocking portion facing the internal cavity of the housing assembly is provided with a first adhesive layer.

Through adopting above-mentioned technical scheme, prevent the condition that first stop part perk from appearing more effectively to further improved the sealing performance of shell subassembly, and then made the battery that adopts above-mentioned shell subassembly can reach higher protection level requirement.

In some embodiments of the present application, the first blocking portion is provided with an avoidance opening.

Through adopting above-mentioned technical scheme, effectively avoid first block portion to produce with the part that sets up in shell subassembly inside and interfere.

Embodiments of the present application further provide a battery module, including the housing assembly according to any one of the above embodiments.

The battery module provided by the embodiment of the application has at least the following beneficial effects: compared with the prior art, the battery module provided by the embodiment of the application effectively improves the sealing performance of the battery module due to the adoption of the shell component, so that the battery module can meet the requirement of higher protection level.

The embodiment of the application also provides a battery, which comprises the battery module.

The battery provided by the embodiment of the application has at least the following beneficial effects: compared with the prior art, the battery provided by the embodiment of the application effectively improves the sealing performance of the battery due to the adoption of the battery module, so that the battery can meet the requirement of higher protection level.

The embodiment of the application also provides an electric device which comprises the battery.

The power consumption device provided by the embodiment of the application has at least the following beneficial effects: compared with the prior art, the electric device provided by the embodiment of the application effectively improves the safety performance of the electric device due to the adoption of the battery.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a schematic structural diagram of a vehicle according to an embodiment of the present application;

fig. 2 is an exploded schematic view of a battery provided in an embodiment of the present application;

fig. 3 is a schematic structural diagram of a battery module according to an embodiment of the present disclosure;

fig. 4 is an exploded schematic view of the battery module shown in fig. 3;

FIG. 5 is a schematic structural view of a first guard of the housing assembly of the battery module shown in FIG. 4;

fig. 6 is a structural schematic view of a cover main body of the housing assembly in the battery module shown in fig. 4;

FIG. 7 is a schematic view of a housing assembly according to another embodiment of the present application;

fig. 8 is a schematic structural view of the second guard in the housing assembly shown in fig. 7.

Description of reference numerals:

1000. a vehicle;

100. a battery;

10. a box body; 11. a first portion; 12. a second portion; 13. an accommodating space;

20. a battery module; 21. a housing assembly; 211. a housing; 2111. an end plate; 2112. a side plate; 2113. a base plate; 212. a cover body; 2121. a cover main body; 21211. flanging; 21212. a lower surface; 21213. an upper surface; 2122. a first guard; 21221. a first connection portion; 21222. a first blocking portion; 21223. avoiding the mouth; 2123. a second guard; 21231. a second connecting portion; 21232. a second blocking portion; 22. a battery cell; 23. a sampling joint;

200. a controller;

300. a motor.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.

Furthermore, the terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to imply that the number of indicated technical features is implicit. Thus, features defined as "first", "second", "third", "fourth", "fifth", "sixth", "seventh" may explicitly or implicitly include one or more of the features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

The battery is an electric energy storage device, and the battery can be formed by directly connecting a plurality of battery monomers in series or in parallel or in series-parallel connection, or can be formed by firstly connecting a plurality of battery monomers in series or in parallel or in series-parallel connection to form a battery module, and then is formed by connecting a plurality of battery modules in series or in parallel or in series-parallel connection, wherein the battery module comprises a shell component, and the battery monomers can be arranged in the shell component in series or in parallel or in series-parallel connection. With the rapid development of the new energy automobile market, the battery is used as a power source of the new energy automobile, the protection grade which can be achieved by the battery is directly related to the driving safety problem of the whole vehicle system, and the sealing performance of the shell component of the battery module is a key factor for determining whether the protection grade of the battery meets the requirement.

The inventors of the present application have noted that the housing assembly of the battery module generally includes a case and a cover body that is provided on the case. One side of the end plate that is close to the casing of lid is equipped with the turn-ups, the turn-ups is used for the clearance of the end plate of closed housing and the main part position of lid, but because battery module's overall dimension is great usually, correspondingly, the overall dimension of lid is also great, therefore, only can turn over the turn-ups of formation through artifical mode or artifical mode with the help of the instrument with one side of being close to the end plate of lid, and can't form the turn-ups on the lid through the machining mode, lead to the turn-ups to stereotype the effect relatively poor, and battery module's the planarization of tip is relatively poor, after work a period, the turn-ups can perk gradually, make the turn-ups break away from the clearance of the main part position of end plate and lid gradually, lead to the sealing performance of shell subassembly to descend, thereby lead to the battery can't satisfy protection level requirement.

In order to improve the sealing performance of shell subassembly, the inventor of this application has been carried out an intensive study, a shell subassembly has been designed, this shell subassembly is connected the first connecting portion and the lid main part of first protection piece, and set up the first stop part of first protection piece between end plate and lid main part, in order to seal the clearance of end plate and lid main part, because first connecting portion and first stop part each other become the contained angle and connect, make the difficult perk of first stop part, thereby effectively prevent to take place the condition that first stop part breaks away from the clearance of end plate and lid main part, the sealing performance of shell subassembly has effectively been improved, and then make the battery that adopts above-mentioned shell subassembly can reach higher protection level requirement.

The embodiment of the application provides an electric device using a battery as a power supply, wherein the electric device comprises but is not limited to a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, a battery car, an electric automobile, a ship, a spacecraft and the like. The electric toy may include a stationary or mobile electric toy, such as a game machine, an electric car toy, an electric ship toy, an electric airplane toy, and the like, and the spacecraft may include an airplane, a rocket, a space shuttle, a spacecraft, and the like.

For convenience of description, the following embodiments take an example in which a power consuming apparatus according to an embodiment of the present application is a vehicle 1000.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle 1000 according to an embodiment of the present disclosure. The vehicle 1000 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 a range-extended automobile, etc. The battery 100 is provided inside the vehicle 1000, and the battery 100 may be provided at the bottom or the head or the tail of the vehicle 1000. The battery 100 may be used for power supply of the vehicle 1000, for example, the battery 100 may serve as an operation power source of the vehicle 1000. The vehicle 1000 may further include a controller 200 and a motor 300, the controller 200 being configured to control the battery 100 to supply power to the motor 300, for example, for starting, navigation, and operational power requirements while the vehicle 1000 is traveling.

In some embodiments of the present application, the battery 100 may be used not only as an operating power source of the vehicle 1000, but also as a driving power source of the vehicle 1000, instead of or in part of fuel or natural gas, to provide driving power for the vehicle 1000.

Referring to fig. 2, fig. 2 is an exploded schematic view of a battery 100 according to an embodiment of the present disclosure. The battery 100 includes a case 10 and a battery cell 22, and the battery cell 22 is accommodated in the case 10. The case 10 is used to provide the accommodating space 13 for the battery cells 22, and the case 10 may have various structures. In some embodiments, the case 10 may include a first portion 11 and a second portion 12, the first portion 11 and the second portion 12 cover each other, and the first portion 11 and the second portion 12 jointly define a receiving space 13 for receiving the battery cell 22. The second part 12 may be a hollow structure with one end open, the first part 11 may be a plate-shaped structure, and the first part 11 is covered on the open side of the second part 12, so that the first part 11 and the second part 12 jointly define the accommodating space 13; the first portion 11 and the second portion 12 may be both hollow structures with one side open, and the open side of the first portion 11 is disposed on the open side of the second portion 12. Of course, the case 10 formed by the first and second portions 11 and 12 may have various shapes, such as a cylinder, a rectangular parallelepiped, and the like.

In the battery 100, the battery cells 22 may be multiple, and the multiple battery cells 22 may be connected in series, in parallel, or in series-parallel, where in series-parallel refers to both series connection and parallel connection among the multiple battery cells 22. The battery 100 may be a battery module 20 formed by connecting a plurality of battery cells 22 in series, in parallel, or in series-parallel, and a plurality of battery modules 20 formed in series, in parallel, or in series-parallel are integrated and accommodated in the case 10. Of course, the battery 100 may also be formed by directly connecting a plurality of battery cells 22 in series, in parallel, or in series-parallel, and then integrally accommodating the plurality of battery cells 22 in the case 10.

Referring to fig. 3 and 4, the battery module 20 includes a housing assembly 21, a battery cell 22, a sampling assembly, and other functional components.

The housing assembly 21 is a component for providing an internal environment of the battery module 20, wherein the internal environment may be used to house the battery cells 22, the sampling assembly, and other components.

The battery cells 22 are minimum electrical energy storage units including an electrode assembly, an electrolyte, and the like, and each battery cell 22 may be a secondary battery or a primary battery; but is not limited to, a lithium sulfur battery, a sodium ion battery, or a magnesium ion battery. The battery cell 22 may also be cylindrical, flat, rectangular parallelepiped, or other shape.

The electrode assembly is a component in the battery cell 22 where electrochemical reactions occur. Battery cell 22 may contain one or more electrode assemblies. The electrode assembly is mainly made of a positive electrode tab, a negative electrode tab and a separator by a winding process or a lamination process. The diaphragm is used for insulating and separating the positive plate and the negative plate. The portions of the positive and negative electrode sheets having the active material constitute the main body portion of the electrode assembly, and the portions of the positive and negative electrode sheets having no active material constitute tabs, respectively. During the charging and discharging processes of the battery cell 22, the positive electrode active material and the negative electrode active material react with the electrolyte to generate electric energy, and the electric energy is led out through the tabs.

The sampling assembly is a component for collecting the sampling signal of the battery cell 22 and transmitting the sampling signal to the battery management system. The sampling signal is an electrical signal representing an operating parameter of the battery cell 22, such as a pressure signal, a temperature signal, an internal resistance signal, and the like.

Referring to fig. 3 to 5, a housing assembly 21 according to an embodiment of the present application will be described.

In a first aspect, the present embodiment provides a housing assembly 21, where the housing assembly 21 includes a housing 211 and a cover 212, where the housing 211 has an opening, the housing 211 includes an end plate 2111, and the cover 212 includes a cover main body 2121 and a first guard 2122. The cover body 2121 covers the opening of the housing 211, the first shielding member 2122 includes a first connecting portion 21221 and a first blocking portion 21222, the first connecting portion 21221 and the first blocking portion 21222 are connected at an included angle, the first connecting portion 21221 is connected to the cover body 2121, and the first blocking portion 21222 extends from the first connecting portion 21221 to the end plate 2111 to close a gap between the end plate 2111 and the cover body 2121.

The housing 211 is a component for providing an internal environment of the battery module 20, wherein the internal environment may be used to house the battery cells 22, the sampling assembly, and other components. The cover 212 covers the opening of the housing 211 to form an internal environment of the battery module 20, in which the battery cells 22, the sampling assembly, and the like are accommodated. The material of the housing 211 includes various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and is not limited herein.

Specifically, the housing 211 has a longitudinal direction, a width direction, and a height direction, where the X direction shown in fig. 3 and 4 is the longitudinal direction of the housing 211, the Y direction shown in fig. 3 and 4 is the width direction of the housing 211, and the Z direction shown in fig. 3 and 4 is the height direction of the housing 211, and for convenience of description, the longitudinal direction of the housing 211 is referred to as the X direction, the width direction of the housing 211 is referred to as the Y direction, and the height direction of the housing 211 is referred to as the Z direction. The housing 211 includes a bottom plate 2113, two end plates 2111 and two side plates 2112, the two end plates 2111 are respectively disposed at two opposite sides of the bottom plate 2113 along the X direction, the two side plates 2112 are respectively disposed at two opposite sides of the bottom plate 2113 along the Y direction, one side of the housing 211 away from the bottom plate 2113 along the Z direction is provided with the opening, and the bottom plate 2113, the two end plates 2111, the two side plates 2112 and the cover main body 2121 jointly enclose the internal environment.

The cover body 212 is a member that covers the opening of the case body 211 to isolate the internal environment of the battery module 20 from the external environment.

Specifically, the cover body 2121 of the cover 212 covers the opening of the housing 211, and the shape of the cover body 2121 may be adapted to the shape of the opening of the housing 211 to fit the housing 211. The cover body 2121 may serve as an insulating member of the battery module 20, and serves to insulate charged parts such as the battery cells 22 and the sampling assembly, which are contained in the internal environment, from other external parts. Alternatively, the material of the cap body 2121 may include various materials, such as PC (Polycarbonate), PP (polypropylene), PA (Polyamide), POM (polyoxymethylene), PE (polyethylene), etc., and is not limited in particular.

Specifically, the first guard 2122 is a sealing member for closing a gap between the end plate 2111 and the cap body 2121. The first connecting portion 21221 is a portion of the first guard 2122 for connecting to the cap body 2121, and the connecting manner of the first connecting portion 21221 and the cap body 2121 includes various manners, such as an adhesive manner and a welding manner, and is not limited in detail herein. The first stopper 21222 is a portion of the first guard 2122 for closing a gap between the end plate 2111 and the cap body 2121. The connection between the first connecting portion 21221 and the first blocking portion 21222 is that the first connecting portion 21221 and the first blocking portion 21222 are not parallel to each other, and an included angle formed between the first connecting portion 21221 and the first blocking portion 21222 may be determined according to actual design requirements, and may be, specifically, 120 °, 90 °, 60 °, and the like, which is not limited specifically herein. In order to ensure that the first guard 2122 has sufficient setting strength, the first guard 2122 is formed by machining, wherein the machining includes various methods, for example, the first guard 2122 may be formed by extruding a sheet using an extruder; for another example, the first guard 2122 may be integrally injection-molded by using an injection molding machine, and is not particularly limited herein. The material of the first protection element 2122 includes various materials, such as PC (Polycarbonate), PP (polypropylene) PA (Polyamide), POM (polyoxymethylene), PE (polyethylene), etc., and is not limited in particular.

It is to be understood that the number of the first prevention pieces 2122 is two, the first connection portion 21221 of one first prevention piece 2122 is connected to a side of the cap body 2121 adjacent to one end plate 2111, and the first connection portion 21221 of the other first prevention piece 2122 is connected to a side of the cap body 2121 adjacent to the other end plate 2111. In other words, one first prevention piece 2122 is provided to close a gap between one side of the cap body 2121 and one end plate 2111, and the other first prevention piece 2122 is provided to close a gap between the other side of the cap body 2121 and the other end plate 2111.

The housing assembly 21 provided by the embodiment of the present application connects the first connecting portion 21221 with the cover main body 2121, and the first blocking portion 21222 is disposed between the end plate 2111 and the cover main body 2121 to close the gap between the end plate 2111 and the cover main body 2121, because the first connecting portion 21221 and the first blocking portion 21222 are connected at an included angle, the first blocking portion 21222 is not easily tilted, thereby effectively preventing the first blocking portion 21222 from being separated from the gap between the end plate 2111 and the cover main body 2121, effectively improving the sealing performance of the housing assembly 21, and further enabling the battery 100 using the housing assembly 21 to achieve a higher protection level requirement.

In some embodiments of the present application, referring to FIG. 6, a side of the cover body 2121 adjacent to the side plate 2112 of the housing 211 is provided with a flange 21211, and the flange 21211 is connected to the side plate 2112.

For convenience of description, the surface of the cover body 2121 facing the internal environment of the housing 211 is defined as a lower surface 21212, and the surface of the cover body 2121 facing away from the internal environment of the housing 211 is defined as an upper surface 21213, i.e., two surfaces of the cover body 2121 distributed back in the Z-direction are respectively an upper surface 21213 and a lower surface 21212.

The burring 21211 is a portion formed by folding back an edge portion of the cover main body 2121 close to the side plate 2112 of the housing 211 toward the lower surface 21212 of the cover main body 2121. The connection between the flange 21211 and the side plate 2112 includes various methods, such as an adhesive method, an abutting method, and the like, and is not particularly limited herein.

It will be appreciated that the cover body 2121 is provided with a flange 21211 on a side adjacent one of the side plates 2112 and a flange 21211 on a side adjacent the other side plate 2112, one flange 21211 being connected to one side plate 2112 to close the gap between the cover body 2121 and the side plate 2112, and the other flange 21211 being connected to the other side plate 2112 to close the gap between the cover body 2121 and the side plate 2112.

Because the side plate 2112 has better flatness, the turned edge 21211 is not easy to tilt up by connecting the turned edge 21211 with the side plate 2112, and the gap between the cover main body 2121 and the side plate 2112 is effectively closed, so that the sealing performance of the housing assembly 21 is further improved, and the battery 100 adopting the housing assembly 21 can meet the requirement of higher protection grade.

In some embodiments of the present application, referring to fig. 7 and 8, the cover 212 includes a second protection member 2123, the second protection member 2123 includes a second connection portion 21231 and a second blocking portion 21232, the second connection portion 21231 and the second blocking portion 21232 are connected at an angle, the second connection portion 21231 is connected to the cover main body 2121, and the second blocking portion 21232 extends from the second connection portion 21231 to be connected to the side plate 2112, so as to close a gap between the side plate 2112 and the cover main body 2121.

The second guard 2123 is a sealing member for closing a gap between the cover main body 2121 and the side plate 2112. The second connecting portion 21231 is a portion of the second guard 2123 for connecting to the cap body 2121, and the connection manner of the second connecting portion 21231 to the cap body 2121 includes various manners, such as an adhesive manner and a welding manner, and is not limited in detail herein. The second blocking portion 21232 is a portion of the second guard 2123 for closing a gap between the cover body 2121 and the side plate 2112, and the connection method between the second blocking portion 21232 and the side plate 2112 includes various methods, for example, an adhesion method, an abutment method, and the like, and is not particularly limited. The connection between the second connecting portion 21231 and the second blocking portion 21232 is that the second connecting portion 21231 and the second blocking portion 21232 are not parallel to each other, and the angle between the second connecting portion 21231 and the second blocking portion 21232 may be determined according to actual design requirements, and may be, specifically, 120 °, 90 °, 60 °, and the like, which is not limited specifically herein. In order to ensure sufficient setting strength of the second protection element 2123, the second protection element 2123 is formed by machining, wherein the machining includes various methods, for example, the second protection element 2123 can be formed by extruding a sheet material by using an extruder, and for example, the second protection element 2123 can be integrally injection-molded by using an injection molding machine, which is not particularly limited herein. The material of the second shielding member 2123 includes various materials, such as PC (Polycarbonate), PP (polypropylene), PA (Polyamide), POM (polyoxymethylene), PE (polyethylene), etc., and is not limited in particular.

It is understood that the number of the second prevention pieces 2123 is two, the second connecting portion 21231 of one of the second prevention pieces 2123 is connected to a side of the cover main body 2121 adjacent to one side plate 2112 and the second blocking portion 21232 of the one of the second prevention pieces 2123 is connected to the side plate 2112, the second connecting portion 21231 of the other one of the second prevention pieces 2123 is connected to a side of the cover main body 2121 adjacent to the other side plate 2112 and the second blocking portion 21232 of the one of the second prevention pieces 2123 is connected to the side plate 2112. In other words, one second prevention piece 2123 is provided for closing a gap between one side of the cover main body 2121 and one side plate 2112, and the other second prevention piece 2123 is provided for closing a gap between the other side of the cover main body 2121 and the other side plate 2112.

By adopting the above technical scheme, since the second connecting portion 21231 and the second blocking portion 21232 are connected at an included angle, the second blocking portion 21232 is not easily tilted, thereby effectively preventing the second blocking portion 21232 from being separated from the gap between the side plate 2112 and the cover main body 2121, further improving the sealing performance of the housing assembly 21, and further enabling the battery 100 adopting the housing assembly 21 to meet the requirement of higher protection level.

In some embodiments of the present application, the second guard 2123 has a thickness in a range of 0.3mm to 0.6mm.

It is understood that the thickness of the second connecting portion 21231 and the thickness of the second blocking portion 21232 may be the same or different, and the thickness of the second connecting portion 21231 and the thickness of the second blocking portion 21232 are 0.3mm to 0.6mm, for example, the thickness of the second connecting portion 21231 is 0.3mm, and the thickness of the second blocking portion 21232 is 0.5mm; for another example, the thickness of the second connecting portion 21231 is 0.5mm, and the thickness of the second blocking portion 21232 is 0.6mm; for another example, the thickness of the second connecting portion 21231 is 0.6mm, and the thickness of the second stopper 21232 is 0.6mm. The thickness of the second connecting portion 21231 refers to the dimension of the second connecting portion 21231 along the Z-direction, and the thickness of the second blocking portion 21232 refers to the dimension of the second blocking portion 21232 along the Y-direction.

By adopting the above technical solution, on one hand, the second shielding element 2123 can be ensured to have sufficient strength, and the tilting of the second blocking portion 21232 can be more effectively prevented, so as to further improve the sealing performance of the housing assembly 21, and on the other hand, the height and width of the battery module 20 can be prevented from being greatly increased due to the excessive thickness of the second shielding element 2123, so as to effectively reduce the adverse effect of the second shielding element 2123 on the energy density of the battery module 20.

In some embodiments of the present application, referring to fig. 7, a cover body 2121 covers the second connecting portion 21231.

In other words, the second connecting portion 21231 is connected to the lower surface 21212 of the cover main body 2121.

By adopting the above technical scheme, the second connecting part 21231 can be prevented from being exposed, and the risk that the second protection part 2123 falls off due to the collision between the second connecting part 21231 and a foreign object is effectively reduced, so that the sealing reliability of the housing assembly 21 is effectively improved.

In some embodiments of the present application, the second stop 21232 is connected to a surface of the side plate 2112 facing the interior cavity of the housing assembly 21.

By adopting the above technical solution, the second blocking portion 21232 can be prevented from being exposed, and the risk that the second shielding member 2123 falls off due to the collision between the second blocking portion 21232 and the foreign object is effectively reduced, thereby effectively improving the sealing reliability of the housing assembly 21.

In some embodiments of the present application, the second connecting portion 21231 is bonded to the cover body 2121.

It will be appreciated that the second connecting portion 21231 and/or the cover body 2121 is provided with a second adhesive layer, and the second connecting portion 21231 is adhered to the cover body 2121 via the second adhesive layer.

In some embodiments, when the cover body 2121 covers the second connecting portion 21231, a surface of the second connecting portion 21231 facing away from the cover body 2121 is provided with a third adhesive layer, which is a portion of the second connecting portion 21231 for adhering to a component accommodated in the internal environment of the housing 211. For example, the second connecting portion 21231 may be bonded to the mica sheet accommodated in the internal environment of the housing 211 through a third bonding layer; for another example, the second connection portion 21231 may be bonded to the battery cell 22 accommodated in the internal environment of the housing 211 through a third adhesive layer.

By adopting the above technical scheme, not only the connection stability between the second connecting part 21231 and the cover main body 2121 is effectively ensured, but also the second protection part 2123 is more conveniently assembled, thereby effectively improving the assembly efficiency of the housing assembly 21.

In some embodiments of the present application, the second stop 21232 is bonded to the side plate 2112.

It will be appreciated that a fourth adhesive layer is provided on the second stop portion 21232 and/or the side plate 2112, and the second stop portion 21232 is adhered to the side plate 2112 via the fourth adhesive layer.

In some embodiments, when the second stop portion 21232 is attached to the surface of the side plate 2112 facing the interior cavity of the housing assembly 21, the surface of the second stop portion 21232 facing away from the side plate 2112 is provided with a fifth adhesive layer, which is a portion of the second stop portion 21232 for bonding with components housed in the interior environment of the housing 211. For example, the second blocking portion 21232 may be adhered to the battery cell 22 accommodated in the internal environment of the case 211 by a fifth adhesive layer; as another example, the second blocking portion 21232 may be bonded to a separator accommodated in the internal environment of the housing 211 and disposed between the battery cell 22 and the side plate 2112 through a fifth adhesive layer.

By adopting the above technical solution, not only the connection stability of the second blocking portion 21232 and the side plate 2112 is effectively ensured, but also the second shielding member 2123 is more conveniently assembled, thereby effectively improving the assembly efficiency of the housing assembly 21.

In some embodiments of the present application, the first guard 2122 has a thickness in a range of 0.3mm to 0.6mm.

It is understood that the thickness of the first connecting portion 21221 and the thickness of the first blocking portion 21222 may be the same or different, and the thickness of the first connecting portion 21221 and the thickness of the first blocking portion 21222 are both 0.3mm to 0.6mm, for example, the thickness of the first connecting portion 21221 is 0.3mm, and the thickness of the first blocking portion 21222 is 0.5mm; for another example, the thickness of the first connecting portion 21221 is 0.5mm, and the thickness of the first barrier portion 21222 is 0.6mm; for another example, the thickness of the first connecting portion 21221 is 0.6mm, and the thickness of the first blocking portion 21222 is 0.6mm. The thickness of the first connecting portion 21221 refers to the dimension of the first connecting portion 21221 along the Z-direction, and the thickness of the first blocking portion 21222 refers to the dimension of the first blocking portion 21222 along the X-direction.

By adopting the above technical solution, on one hand, the first shielding member 2122 can be ensured to have sufficient strength, and the first blocking portion 21222 can be more effectively prevented from tilting up, so that the sealing performance of the housing assembly 21 is further improved, and on the other hand, the height dimension and the width dimension of the battery module 20 can be prevented from being greatly increased due to the excessive thickness of the first shielding member 2122, so that the adverse effect of the first shielding member 2122 on the energy density of the battery module 20 is effectively reduced.

In some embodiments of the present application, referring to fig. 4, a cover body 2121 covers the first connecting portion 21221.

In other words, the first connection portion 21221 is connected to the lower surface 21212 of the cover body 2121.

By adopting the above technical scheme, the first connecting part 21221 can be prevented from being exposed, the risk that the first protection part 2122 falls off due to the collision between the first connecting part 21221 and a foreign object is effectively reduced, so that the sealing reliability of the housing assembly 21 is effectively improved, and the battery 100 adopting the housing assembly 21 can meet the requirement of higher protection grade.

In some embodiments of the present application, the thickness of the cover body 2121 ranges from 0.075mm to 0.3mm.

The thickness of the cover body 2121 refers to the dimension of the cover body 2121 in the Z-direction. The thickness of the cover body 2121 may be determined according to actual design requirements, and may be specifically 0.075mm, 0.15mm, 0.3mm, and the like, which is not specifically limited herein.

By adopting the above technical scheme, on the premise of ensuring that the cover main body 2121 has sufficient insulation protection performance, the height dimension of the battery module 20 can be prevented from being greatly increased due to the excessively large thickness of the cover main body 2121, so that the adverse effect of the cover main body 2121 on the energy density of the battery module 20 is effectively reduced.

In some embodiments of the present application, the first connection portion 21221 is bonded to the cover body 2121.

It will be appreciated that the first connection portion 21221 and/or the cover body 2121 is provided with a sixth adhesive layer, and the first connection portion 21221 is adhered to the cover body 2121 via the sixth adhesive layer.

In some embodiments, when the cover body 2121 covers the first connection part 21221, a surface of the first connection part 21221 facing away from the cover body 2121 is provided with a seventh adhesive layer, which is a part of the first connection part 21221 for adhering to a component accommodated in the internal environment of the housing 211. For example, the first connection part 21221 may be bonded to the mica sheet accommodated in the internal environment of the housing 211 by the seventh bonding layer; for another example, the first connection part 21221 may be bonded to the battery cell 22 accommodated in the internal environment of the housing 211 through the seventh adhesive layer.

By adopting the above technical scheme, not only effectively guaranteed the connection steadiness between first connecting portion 21221 and the lid main part 2121, be more convenient for assemble first protection piece 2122 moreover to the assembly efficiency of shell subassembly 21 has effectively been improved.

In some embodiments of the present application, a side of the first barrier 21222 facing the interior cavity of the housing assembly 21 is provided with a first adhesive layer.

The first adhesive layer is a portion of the first stopper 21222 for adhering to a component accommodated in the internal environment of the housing 211. For example, the first blocking portion 21222 may be adhered to the battery cell 22 accommodated in the internal environment of the housing 211 by a first adhesive layer; as another example, the first barrier 21222 may be bonded to a separator housed in the internal environment of the housing 211 and disposed between the cell 22 and the end plate 2111 by a first adhesive layer.

By adopting the above technical scheme, the situation that the first blocking part 21222 tilts is prevented more effectively, so that the sealing performance of the shell assembly 21 is further improved, and the battery 100 adopting the shell assembly 21 can meet the requirement of higher protection level.

In some embodiments of the present application, referring to fig. 5, the first blocking portion 21222 is provided with an avoiding opening 21223.

The evacuation port 21223 penetrates the first blocking portion 21222 in the X direction, and is used for evacuating components of the battery module 20, such as the sampling tab 23 and the battery holder, which protrude from the internal environment of the housing 211 to the external environment. The number of the avoiding ports 21223 may be determined according to the number of components to be avoided by the first blocking portion 21222, and may be specifically one, two, three, or the like, which is not particularly limited herein.

By adopting the above technical solution, the interference between the first blocking part 21222 and the components arranged inside the housing assembly 21 is effectively avoided.

In a second aspect, please refer to fig. 3 and fig. 4, an embodiment of the present application further provides a battery module 20, including the housing assembly 21 of any of the above embodiments.

The battery module 20 provided by the embodiment of the application adopts the shell component 21, so that the sealing performance of the battery module 20 is effectively improved, and the battery module 20 can meet the requirement of higher protection level.

In a third aspect, referring to fig. 2, an embodiment of the present application further provides a battery 100 including the battery module 20.

The battery 100 provided by the embodiment of the application adopts the battery module 20, so that the sealing performance of the battery 100 is effectively improved, and the battery 100 can meet the requirement of higher protection level.

In a fourth aspect, referring to fig. 1, an embodiment of the present application further provides an electric device, including the battery 100.

The electric device provided by the embodiment of the application effectively improves the safety performance of the electric device due to the adoption of the battery 100.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (15)

1. A housing assembly, characterized by: the shell subassembly includes casing and lid, the casing has the opening and includes the end plate, the lid includes lid main part and first protection piece, lid main part lid is located the opening part of casing, first protection piece is including the first connecting portion and the first portion that blocks that each other become the contained angle and connect, first connecting portion with the lid main part is connected, first block by first connecting portion extend to the end plate, in order to seal the end plate with the clearance of lid main part.

2. The enclosure assembly of claim 1, wherein: the shell further comprises a side plate arranged on one side of the end plate, a flanging is arranged on one side, close to the side plate, of the cover main body, and the flanging is connected with the side plate.

3. The enclosure assembly of claim 1, wherein: the casing still including set up in the curb plate of one side of end plate, the lid includes second protection piece, second protection piece is including the second connecting portion and the second that each other become the contained angle and connect and block the portion, the second connecting portion with the lid main part is connected, the second block the portion by the second connecting portion extend to with the curb plate is connected, in order to seal the curb plate with the clearance of lid main part.

4. The enclosure assembly of claim 3, wherein: the second guard has a thickness in a range of 0.3mm to 0.6mm.

5. The enclosure assembly of claim 3, wherein: the cover main body covers the second connecting part; and/or the second blocking part is connected to the surface of the side plate facing the inner cavity of the shell component.

6. The enclosure assembly of claim 3, wherein: the second connecting part is bonded with the cover main body; and/or the second blocking part is bonded with the side plate.

7. The enclosure assembly of any of claims 1-6, wherein: the first guard has a thickness in a range of 0.3mm to 0.6mm.

8. The enclosure assembly of any of claims 1-6, wherein: the cover main body covers the first connecting portion.

9. The enclosure assembly of any of claims 1-6, wherein: the thickness range of the cover main body is 0.075mm-0.3mm.

10. The enclosure assembly of any of claims 1-6, wherein: the first connecting portion is bonded to the lid main body.

11. The enclosure assembly of any of claims 1-6, wherein: one side of the first blocking part facing the inner cavity of the shell component is provided with a first bonding layer.

12. The enclosure assembly of any of claims 1-6, wherein: the first blocking part is provided with an avoiding opening.

13. A battery module, characterized in that: the battery module comprises a housing assembly according to any of claims 1-12.

14. A battery, characterized by: the battery includes the battery module of claim 13.

15. An electric device, characterized in that: the powered device comprises the battery of claim 14.

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