CN220492107U

CN220492107U - Battery cover body, battery box body, battery and power utilization device

Info

Publication number: CN220492107U
Application number: CN202322974832.0U
Authority: CN
Inventors: 魏杰; 潘鑫; 可庆朋; 张罗
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2023-11-03
Filing date: 2023-11-03
Publication date: 2024-02-13
Anticipated expiration: 2033-11-03

Abstract

The embodiment of the application provides a lid, battery box, battery and power consumption device of battery, belongs to battery technical field. The cover body of the battery comprises a cover body and a plurality of cover bodies, wherein the cover bodies are arranged on the lower surface of the cover body, the cover bodies and the cover body jointly define a plurality of accommodating cavities, the accommodating cavities are respectively used for accommodating at least part of a battery pack, and the inner side surfaces of the cover bodies are suitable for being matched with the outer contour shape of the side wall of the battery pack; the smoke exhaust channel is arranged in the accommodating cavity and is arranged on the lower surface of the cover body. Through setting up the structural strength that the cover body promoted lid self, through making the group battery stretch into hold the chamber and cooperate with the cover body to promote the installation strength and the structural stability of lid, promote overall structural strength, and supplementary reduction battery is because the abnormal sound that vibration produced of lid in the use, promotes the stability of battery, and security performance.

Description

Battery cover body, battery box body, battery and power utilization device

Technical Field

The present application relates to the field of battery technology, and more particularly, to a cover body of a battery, a battery case body, a battery, and an electric device.

Background

The lid of general battery is only connected with the box, and the structural strength of lid is weaker, and the lid is weaker with the connection structure's of lower box intensity, and the lid produces the abnormal sound easily when the battery takes place to vibrate.

Disclosure of Invention

The application provides a lid, battery box, battery and power consumption device of battery to lid structural strength and connection structure intensity of solving the battery are weaker, and the lid produces the technical problem of abnormal sound when leading to the battery vibration.

In a first aspect, an embodiment of the present application provides a cover of a battery, including:

a cover body;

the cover body is arranged on the lower surface of the cover body, the cover body and the cover body jointly define a plurality of accommodating cavities, the accommodating cavities are respectively used for accommodating at least part of the battery pack, and the inner side surface of the cover body is suitable for being matched with the outer contour shape of the side wall of the battery pack;

the smoke exhaust channel is arranged in the accommodating cavity, the smoke exhaust channel is arranged on the lower surface of the cover body, an opening which corresponds to the explosion-proof valve of the battery pack is arranged on the lower side of the smoke exhaust channel, an opening is arranged on the side wall of the cover body, and the smoke exhaust channel is communicated with the cover body through the opening.

In the above technical scheme, promote the structural strength of lid self through setting up the cover body, through making the group battery stretch into and hold the chamber and cooperate with the cover body to promote the installation strength and the structural stability of lid, promote overall structural strength, and supplementary reduction battery is because the abnormal sound that vibration produced in the use. Through setting up the exhaust gas passageway, under the circumstances that battery monomer takes place thermal runaway, exhaust gas can be through exhaust gas passageway to one side of group battery, reduces the risk that the lid was broken down.

In some embodiments, the battery cover includes:

the connecting channels are arranged between two adjacent cover bodies along the length direction of the smoke exhaust channel, the connecting channels are arranged on the lower surface of the cover body, and two ends of the connecting channels are respectively communicated with the smoke exhaust channel through the openings.

In the technical scheme, through setting up the connecting channel, can be adjacent the exhaust passage intercommunication of two covers to discharge the one side that two covers are opposite to each other with the flue gas, reduce the stay of intermediate position flue gas, promote the security of battery.

In some embodiments, the side wall of the smoke evacuation channel extends downwardly from the lower surface of the lid body, the wall thickness of the lid body at the smoke evacuation channel being greater than the wall thickness of the lid body at other locations outside the receiving cavity.

In the above technical scheme, through setting up the wall thickness of the roof of smoke evacuation passageway great to promote the structural strength of smoke evacuation passageway department, reduce the influence of high temperature flue gas to the lid body, reduce the breakdown risk, promote security performance.

In some embodiments, the smoke evacuation channel is integrally provided with the cover body.

In the technical scheme, through setting up smoke exhaust passage and lid body an organic whole, the reduction in production degree of difficulty promotes production efficiency and overall structure intensity.

In some embodiments, the cap body includes:

the cover plate is provided with a plurality of cover bodies which are arranged on the lower surface of the cover plate;

the frame is arranged on the lower surface of the cover plate and along the periphery of the cover plate, and the plurality of cover bodies are arranged on the inner side of the frame and are arranged at intervals with the frame.

In the above technical scheme, through setting up the frame, promote the joint strength of lid and lower box, through setting up the cover body with the frame is spaced apart to give the exhaust flue gas and provide accommodation space, and play the effect that improves structural strength.

In some embodiments, the height of the rim is greater than the height of the cover.

In the technical scheme, the height of the frame is larger than that of the cover body, so that interference possibly generated in the assembly process is reduced, and the assembly efficiency is improved.

In some embodiments, the top surface of the receiving cavity is provided with a relief structure adapted to match the shape of the upper surface of the battery pack.

In the technical scheme, the assembly strength between the cover body and the battery pack can be improved, and the overall structural strength is improved.

In some embodiments, the cover is integrally provided with the cover body.

In the technical scheme, the cover body and the cover body are integrally arranged, so that the production difficulty is reduced, and the production efficiency and the overall structural strength are improved.

In a second aspect, embodiments of the present application provide a battery case, including:

the lower box body is provided with a mounting cavity for accommodating the battery pack;

the battery cover according to any one of the above embodiments, wherein the cover body is covered on the lower case.

In the above technical scheme, the battery box promotes the structural strength of lid through setting up the cover body, stretches into through making the group battery and holds the chamber and cooperate with the cover body to promote the installation strength and the structural stability of lid, promote overall structural strength, and reduce the battery box because the abnormal sound that the vibration produced in the use, promote security performance.

In a third aspect, embodiments of the present application provide a battery, including:

the battery case as described in the above embodiment;

the battery packs are installed in the installation cavity, and at least part of the battery packs extend into the containing cavity.

In the above technical scheme, the battery is through making the group battery stretch into and hold the chamber and cooperate with the cover body to promote the installation strength and the structural stability of lid, promote overall structure intensity, and supplementary reduction battery is because the abnormal sound that vibration produced in the use, promotes the security performance of battery.

In some embodiments, the contact height H1 of the cover with the battery pack and the height H2 of the battery pack satisfy:

1/10≤H1/H2≤1/4。

in the technical scheme, the contact height of the cover body and the battery pack is limited, so that the assembly strength of the cover body and the battery pack is ensured, and the assembly strength of the cover body is improved.

In some embodiments, an explosion-proof valve is disposed at the top end of the battery pack, and the dimension W1 of the explosion-proof valve in the width direction of the smoke exhaust channel and the width W2 of the smoke exhaust channel satisfy the following conditions:

1.1≤W2/W1≤3。

in the technical scheme, the width of the smoke discharging channel is limited, so that the smoke discharged by the exhaust valve can smoothly enter the smoke discharging channel, the smoke discharging efficiency is improved, and the safety performance of the battery is improved.

In a fourth aspect, embodiments of the present application provide an electrical device, including a battery as in any of the embodiments above, the battery being configured to power the electrical device.

In the above technical scheme, through using the battery of any one of the above embodiments, through making the group battery stretch into and hold the chamber and cooperate with the cover body to promote the installation strength and the structural stability of cover body, promote overall structure intensity, and supplementary reduction battery is because the abnormal sound that vibration produced in the use promotes the stability of battery and power consumption device.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic illustration of a vehicle according to some embodiments of the present application;

FIG. 2 is an exploded view of a battery according to some embodiments of the present application;

fig. 3 is a schematic diagram of a cover structure of a battery according to some embodiments of the present disclosure;

fig. 4 is a schematic diagram of an assembly structure of a cover and a battery pack according to some embodiments of the present disclosure;

FIG. 5 is a second schematic diagram of an assembly structure of a cover and a battery pack according to some embodiments of the present disclosure;

FIG. 6 is a cross-sectional view at A-A in FIG. 5;

FIG. 7 is an enlarged view at C in FIG. 6;

fig. 8 is a cross-sectional view at B-B in fig. 5.

Reference numerals:

vehicle 1, battery 10, motor 20, controller 30;

the battery box 11, the cover 111, the cover body 1111, the cover plate 11111, the frame 11112, the cover 1112, the accommodating chamber 1121, the opening 11122, the smoke exhaust channel 1113, the side wall 11131 of the smoke exhaust channel, the top wall 11132 of the smoke exhaust channel, the opening 11133, the connecting channel 1114, and the lower box 112;

a battery cell 12;

and a battery pack 13.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

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 herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the figures above are intended to cover non-exclusive inclusions. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily 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 may be included in at least one embodiment of the application. The appearances of such phrases 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. Those of skill in the art will explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "attached" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

The term "and/or" in this application is merely an association relation describing an associated object, and indicates that three relations may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In this application, the character "/" generally indicates that the associated object is an or relationship.

The term "plurality" as used herein refers to two or more (including two), and similarly, "plural sets" refers to two or more (including two), and "plural sheets" refers to two or more (including two).

The battery cells mentioned in the embodiments of the present application may include 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, to which the embodiments of the present application are not limited. The battery cells may be cylindrical, flat, rectangular, or otherwise shaped, as well as the embodiments herein are not limited in this regard. The battery cells are generally classified into three types according to the packaging method: the cylindrical battery cell, the square battery cell and the soft pack battery cell are not limited thereto.

Reference to a battery in 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, the battery referred to in the present application may include a battery pack or a battery pack, or the like. The battery generally includes a case for enclosing one or more battery cells or a plurality of battery packs. The case body can prevent liquid or other foreign matters from affecting the charge or discharge of the battery cells.

The battery cell includes a case, an electrode assembly, and an electrolyte, and the case is used to accommodate the electrode assembly and the electrolyte. The electrode assembly consists of a positive electrode plate, a negative electrode plate and a separation film. The battery cell mainly relies on metal ions to move between the positive pole piece and the negative pole piece to work. The positive electrode plate comprises a positive electrode current collector and a positive electrode active material layer, wherein the positive electrode active material layer is coated on the surface of the positive electrode current collector, the positive electrode current collector without the positive electrode active material layer protrudes out of the positive electrode current collector coated with the positive electrode active material layer, and the positive electrode current collector without the positive electrode active material layer is used as a positive electrode lug. 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 cobaltate, lithium iron phosphate, ternary lithium, lithium manganate or the like. The negative electrode plate comprises a negative electrode current collector and a negative electrode active material layer, wherein the negative electrode active material layer is coated on the surface of the negative electrode current collector, the negative electrode current collector without the negative electrode active material layer protrudes out of the negative electrode current collector coated with the negative electrode active material layer, and the negative electrode current collector without the negative electrode active material layer is used as a negative electrode tab. The material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon, silicon, or the like. In order to ensure that the high current is passed without fusing, the number of positive electrode lugs is multiple and stacked together, and the number of negative electrode lugs is multiple and stacked together.

The material of the separator may be PP (polypropylene) or PE (polyethylene). In addition, the electrode assembly may be a wound structure or a lamination structure, and the embodiment of the present application is not limited thereto.

In recent years, new energy automobiles have been developed dramatically, and in the field of electric automobiles, a power battery plays an important role as a power source of the electric automobile. The battery is composed of a box body and a plurality of battery monomers accommodated in the box body. The battery is used as a core part of a new energy automobile, and has high requirements on safety and cycle service life.

In a general battery, a cover body of the battery is generally fixedly connected with a lower case body to form a battery case body, so as to protect a battery cell or a battery pack in the battery case body. However, the general lid is flat design, and the structural strength of lid self is weaker, and the lid only is connected with lower box, and joint strength is not high, leads to the battery in the use, if the battery takes place to vibrate can make the lid rock and produce abnormal sound, and stability in use is poor, and has the potential safety hazard.

Based on the above-mentioned consideration, in order to solve the lid structural strength and the connection structure intensity of battery and weaker, the lid produces the technical problem of abnormal sound when leading to the battery vibration, this application has designed the lid of a battery, including lid body and a plurality of covers body, the lower surface of lid body is located to a plurality of covers body, and a plurality of covers body and lid body prescribe a limit jointly a plurality of holding chamber, and a plurality of holding chamber are used for holding the at least part of group battery respectively, and the medial surface of the cover body is suitable for the outline shape matching with the group battery lateral wall.

In the lid of the battery of this kind of structure, through setting up a plurality of covers at the lower surface of lid to promote the overall structure intensity of lid, and in the installation, the at least part of group battery can stretch into the cover in, plays spacing effect through the group battery to the cover, and then plays spacing effect to the lid, promotes the mounting structure intensity of lid. With the installation intensity and the structural stability who promote the lid, promote overall structure intensity to supplementary reduction battery is because the abnormal sound that vibration produced in the use, and can improve the security performance of battery.

The battery disclosed by the embodiment of the application can be used in electric devices such as vehicles, ships or aircrafts, but is not limited to the batteries. The power supply system with the battery thermal management system, the battery and the like disclosed by the application can be used for forming the power utilization device, so that the application range of the battery thermal management system is favorably improved, and the assembly difficulty of the battery thermal management system is reduced.

The embodiment of the application provides an electricity utilization device using a battery as a power supply, wherein the electricity utilization device can be, but is not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft and the like. Among them, the electric toy may include fixed or mobile electric toys, such as game machines, electric car toys, electric ship toys, electric plane toys, and the like, and the spacecraft may include planes, rockets, space planes, and spacecraft, and the like.

For convenience of description, the following embodiment will take an electric device according to an embodiment of the present application as an example of the vehicle 1.

As shown in fig. 1, a schematic structural diagram of a vehicle 1 according to an embodiment of the present application is shown, where the vehicle 1 may be a fuel-oil vehicle, a gas-fired vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended range vehicle. The motor 20, the controller 30 and the battery 10 may be provided inside the vehicle 1, and the controller 30 is configured to control the battery 10 to supply power to the motor 20. For example, the battery 10 may be provided at the bottom or the head or the tail of the vehicle 1. The battery 10 may be used for power supply of the vehicle 1, e.g. the battery 10 may be used as an operating power source for the vehicle 1, for electrical circuitry of the vehicle 1, e.g. for start-up, navigation and operational power requirements of the vehicle 1. In another embodiment of the present application, the battery 10 may not only serve as an operating power source for the vehicle 1, but also as a driving power source for the vehicle 1, instead of or in part instead of fuel oil or natural gas, to provide driving power for the vehicle 1.

To meet different power requirements, the battery 10 may include a plurality of battery cells 12, where the plurality of battery cells 12 may be connected in series or parallel or a series-parallel connection, where a series-parallel connection refers to a mixture of series and parallel connections.

As shown in fig. 2, a structural exploded view of the battery 10 according to one embodiment of the present application is shown. The battery 10 includes a battery case 11 and a plurality of battery cells 12, and the battery cells 12 are accommodated in the battery case 11. The battery case 11 is used to provide an assembly space for the battery cells 12, and the battery case 11 may have various structures. In some embodiments, the battery case 11 may include a cover 111 and a lower case 112, the cover 111 and the lower case 112 being covered with each other, the cover 111 and the lower case 112 together defining an assembly space for accommodating the battery cells 12. The lower case 112 may have a hollow structure with one end opened, the cover 111 may have a plate-shaped structure, and the cover 111 covers the open side of the lower case 112, so that the cover 111 and the lower case 112 together define an assembly space; the cover 111 and the lower case 112 may be hollow structures with one side open, and the open side of the cover 111 may be closed to the open side of the lower case 112. Of course, the battery case 11 formed by the cover 111 and the lower case 112 may be of various shapes, such as a cylinder, a rectangular parallelepiped, etc.

In the battery 10, the plurality of battery cells 12 may be connected in series or parallel or a series-parallel connection, wherein a series-parallel connection refers to that the plurality of battery cells 12 are connected in series or parallel. The plurality of battery cells 12 can be directly connected in series or in parallel or in series-parallel, and then the whole formed by the plurality of battery cells 12 is accommodated in the battery box 11; of course, the battery 10 may also be in the form of one or more battery packs formed by connecting a plurality of battery cells 12 in series, parallel or series-parallel connection, and the plurality of battery packs are then connected in series, parallel or series-parallel connection to form a whole and accommodated in the battery case 11. The battery 10 may also include other structures, for example, the battery 10 may also include a bus bar member for making electrical connection between the plurality of battery cells 12.

Wherein each battery cell 12 may be a secondary battery or a primary battery; but not limited to, lithium sulfur batteries, sodium ion batteries, or magnesium ion batteries. The battery cells 12 may be cylindrical, flat, rectangular, or otherwise shaped.

According to some embodiments of the present application, as shown in fig. 3-8, and in particular fig. 3, there is provided a cover 111 of a battery 10, the cover 111 including a cover body 1111 and a plurality of covers 1112.

The cover body 1111 may be provided in a plate shape, and the cover body 1111 may be fixedly connected with the lower case 112 and sealed to form an installation cavity for accommodating the battery cell 12.

In this embodiment, as shown in fig. 4 to 8, a plurality of battery cells are installed in the installation cavity in a manner of combining to form a battery pack 13, and the battery pack 13 may be provided with a plurality of battery packs 13, and the plurality of battery packs 13 may be electrically connected to form a whole.

A plurality of covers 1112 may be provided on a lower surface of the cover body 1111, the plurality of covers 1112 may define a plurality of receiving chambers 1121 together with the cover body 1111, the plurality of receiving chambers 1121 may be used to receive at least a portion of the battery pack 13, respectively, and an inner side surface of the cover 1112 may be adapted to match an outer contour shape of a sidewall of the battery pack 13.

The lower surface of lid body 1111, i.e. the surface towards one side of group battery 13, a plurality of covers 1112 are located the lower surface of lid body 1111, and cover 1112 is the downwardly extending setting from the lower surface of lid body 1111, forms the structure of similar strengthening rib, plays the effect of promoting lid body 1111 self structural strength. And the cover 1112 may be annularly disposed such that the single cover 1112 and the lower surface of the cover body 1111 together define a receiving chamber 1121, the plurality of receiving chambers 1121 may be used to receive the plurality of battery packs 13, at least a portion of the receiving battery packs 13 may extend into the receiving chamber 1121, and in particular, an upper end of the battery pack 13 may extend into the receiving chamber 1121.

The shape of the cover 1112 may be designed according to the shape of the battery pack 13, so that the inner side surface of the cover 1112 may be adapted to match with the outer contour shape of the side wall of the battery pack 13, so that after at least a portion of the battery pack 13 extends into the accommodating cavity 1121, the side wall of the battery pack 13 may be connected with the inner side surface of the cover 1112 in a matching manner, so that the battery pack 13 and the cover 1112 form an assembly relationship, and then are connected with the cover body 1111, so that the assembly structure of the cover 111 is more stable.

In actual implementation, the battery pack 13 is firstly installed and fixed in the lower box 112, after the installation is completed, the cover 111 is covered on the lower box 112, so that the cover 1112 is correspondingly covered outside the corresponding battery pack 13, at least part of the battery pack 13 extends into the accommodating cavity 1121, the outer side wall of the upper end of the battery pack 13 is matched with the inner side wall of the cover 1112, the assembly integrity of the cover 111 of the battery 10, the battery pack 13 and the lower box 112 is stronger, when the battery pack is vibrated, vibration force is transmitted in each part to offset, the influence of vibration on the cover 111 and the integral structure is reduced, and the stability of the structure of the cover 111 and the installation structure of the cover 111 is improved.

According to the lid 111 of battery 10 that this application embodiment provided, promote the structural strength of lid 111 self through setting up cover 1112, through making group battery 13 stretch into hold chamber 1121 and with cover 1112 cooperation to promote the installation strength and the structural stability of lid 111, promote overall structural strength, and supplementary reduction battery 10 is because the abnormal sound that vibration produced of lid 111 in the use, promotes battery 10's stability, and security performance.

In some embodiments, the outer surface of the upper end of the battery pack 13 may be adhered to the inner surface of the cover 1112, and after the adhesive is solidified, the battery pack 13 is fixedly connected to the cover 1112, so as to improve the connection strength, and further improve the overall structural strength.

As shown in fig. 3 to 7, the cover 111 of the battery 10 may include a smoke exhaust passage 1113, the smoke exhaust passage 1113 may be provided in the accommodation chamber 1121, and the smoke exhaust passage 1113 may be provided at the lower surface of the cover body 1111, referring to fig. 7, the lower side of the smoke exhaust passage 1113 may be provided with an opening 11133 adapted to correspond to an explosion-proof valve (not shown) of the battery pack 13, the sidewall of the cover 1112 may be provided with an opening 11122, and the smoke exhaust passage 1113 may communicate with the outside of the cover 1112 through the opening 11122.

In this embodiment, the battery unit 12 is generally provided with an explosion-proof valve to improve safety performance, when the battery unit 12 is thermally out of control, the explosion-proof valve is opened to discharge high-temperature flue gas generated in the battery unit 12, the explosion-proof valve is generally provided at the upper end of the battery unit 12, so as to reduce potential safety hazard, and the discharged flue gas is not accumulated in the accommodating cavity 1121, and an opening 11122 may be provided on the side wall of the cover 1112 for discharging the generated flue gas.

The accommodating cavity 1121 may be correspondingly provided with a smoke exhaust channel 1113, the smoke exhaust channel 1113 may be disposed on the lower surface of the cover body 1111, and an opening 11133 adapted to correspond to an explosion-proof valve of the battery pack 13 may be disposed on the lower side of the smoke exhaust channel 1113, and after the explosion-proof valve is opened, smoke may enter the smoke exhaust channel 1113 through the opening 11133.

The opening 11133 may be provided in various manners, which are not limited herein. In an example, as shown in fig. 3 and 7, the openings 11133 may be one, and one opening 11133 extends along a length direction of the smoke exhaust channel 1113, so that a lower side of the smoke exhaust channel 1113 is in an open arrangement, so that smoke enters the smoke exhaust channel 1113. In another example, the openings 11133 may be provided in plurality, and the plurality of openings 11133 are respectively in one-to-one correspondence with the explosion-proof valves of the plurality of battery cells 12 of the battery pack 13; alternatively, each opening 11133 corresponds to two or more explosion-proof valves of the battery cells 12.

The smoke exhaust channel 1113 can be communicated with the outside of the cover body 1112 through the opening 11122, so that smoke in the smoke exhaust channel 1113 is exhausted to the outside of the cover body 1112, specifically, the end part of the smoke exhaust channel 1113 in the length direction is connected with the opening 11122, so that smoke exhausted by the battery unit 12 can be rapidly exhausted to the outside of the cover body 1112 through the smoke exhaust channel, the smoke retained between the battery pack 13 and the cover body 1111 is reduced, and the risk of breakdown of the cover body 1111 due to high-temperature and high-pressure smoke conduction is reduced.

In the present embodiment, the shape of the smoke evacuation channel 1113 is set according to the arrangement of the explosion-proof valves of the battery cells 12 in the battery pack 13. As shown in fig. 3, the smoke exhaust channel 1113 may be disposed in a linear manner, and the length direction of the smoke exhaust channel 1113 may extend along the arrangement direction of the plurality of battery cells 12, so that the smoke exhaust channel 1113 is just opposite to the explosion-proof valves of the plurality of battery cells 12. In other embodiments, the smoke evacuation channel 1113 may also be configured in a curved or zigzag configuration, which is not limited herein.

In the present embodiment, the number of the smoke evacuation passages 1113 in the single accommodation chamber 1121 is also not limited, and the smoke evacuation passages 1113 of the single accommodation chamber 1121 may be provided with one, two, three, or more than three. In general, the number of exhaust valves of the battery cells 12 is one, and meanwhile, a plurality of explosion-proof valves are provided for some battery cells 12 to promote the exhaust efficiency of exhaust smoke, and in the case of providing a plurality of explosion-proof valves, the width of the exhaust smoke channel 1113 may be widened, or a plurality of exhaust smoke channels 1113 may be provided to face the plurality of explosion-proof valves of each battery cell 12.

According to the lid 111 of battery 10 that this application embodiment provided, promote the structural strength of lid 111 self through setting up lid 1112, through making group battery 13 stretch into hold chamber 1121 and with the cooperation of lid 1112, with the installation strength and the structural stability of promoting lid 111, promote overall structural strength, and supplementary reduce battery 10 in the use lid 111 because the abnormal sound that the vibration produced, promote battery 10's stability, and security performance, and under the circumstances that battery monomer 12 takes place thermal runaway, exhaust gas can be through exhaust passage 1113 to one side of group battery 13, reduce the risk that lid 111 is broken down.

In some embodiments, at least one opening 11122 in the housing 1112 may be provided.

In an example, the openings 11122 may be provided with one, and one opening 11122 is connected to one end of the smoke exhaust passage 1113 in the length direction, so that the smoke in the smoke exhaust passage 1113 is exhausted to one side of the cover 1112.

In another example, two openings 11122 may be provided, and the two openings 11122 are respectively connected to two ends of the smoke exhaust channel 1113 in the length direction, so that the smoke in the smoke exhaust channel 1113 is exhausted to two sides of the cover 1112 to improve the smoke exhaust efficiency.

According to some embodiments of the present application, as shown in fig. 3-5 and 8, the cover 111 of the battery 10 may include a connecting channel 1114.

A connection passage 1114 may be provided between two adjacent cover bodies 1112 along the length direction of the smoke exhaust passage 1113, the connection passage 1114 may be provided at the lower surface of the cover body 1111, and both ends of the connection passage 1114 may be respectively communicated with the smoke exhaust passage 1113 through openings 11122.

In the present embodiment, the connection passage 1114 is provided between two cover bodies 1112 adjacent in the length direction of the smoke exhaust passage 1113, the connection passage 1114 may be provided at the lower surface of the cover body 1111, and both ends of the connection passage 1114 are respectively connected with the openings 11122 of the two cover bodies 1112 to communicate with the smoke exhaust passage 1113 in the two accommodation cavities 1121 through the openings 11122.

The inside of the connection channel 1114 is isolated from the outside, so that the smoke in the smoke exhaust channel 1113 does not flow out of the cover 1112 when passing through the connection channel 1114, and can only be discharged through the opening 11122 at the other end of the smoke exhaust channel 1113, so as to reduce the accumulation of the smoke in the middle of the battery 10, and the smoke is discharged to the edge of the battery 10 as much as possible, thereby reducing the potential safety hazard.

In the present embodiment, a plurality of cover bodies 1112 may be arranged along the longitudinal direction of the smoke evacuation channel 1113, and may be two, three, four or more, and is not particularly limited.

Taking the case of two cover bodies 1112 disposed along the length direction of the smoke discharging channel 1113 as an example, a connecting channel 1114 is disposed between the openings 11122 on opposite sides of the two cover bodies 1112, so that the smoke discharging channel 1113 in the two accommodating cavities 1121 is communicated through the connecting channel 1114, wherein at least one of the two cover bodies 1112 is provided with two openings 11122. In one example, one of the two covers 1112 is provided with two openings 11122, one of the two openings 11122 of the cover 1112 is communicated with the connecting channel 1114, and the other is arranged on the side opposite to the other cover 1112 for discharging the smoke in the two smoke discharging channels 1113, so that the smoke is intensively discharged to one side of the battery 10, the diffusion speed of the smoke is reduced, and the safety is improved. Alternatively, in another example, both the two covers 1112 may be provided with two openings 11122, so that two openings 11122 are respectively disposed on opposite sides of the two covers 1112, and the smoke in the two smoke exhaust passages 1113 may be exhausted from the two openings 11122 on opposite sides of the two covers 1112, so that the exhaust efficiency is higher.

According to the connecting channel 1114 provided in the embodiment of the application, the retention of smoke in the middle position of the battery 10 can be reduced, and the safety of the battery 10 is improved.

According to some embodiments of the present application, as shown in fig. 3, 6 and 7, the side wall 11131 of the smoke evacuation channel may extend downward from the lower surface of the cover body 1111, and the wall thickness of the cover body 1111 at the smoke evacuation channel 1113 may be greater than the wall thickness of the cover body 1111 at other positions outside the receiving chamber 1121.

In this embodiment, the sidewall 11131 of the smoke exhaust channel may extend downward from the lower surface of the cover body 1111, so that the sidewall 11131 of the smoke exhaust channel is disposed near the top end of the battery pack 13, specifically, the lower surface of the sidewall 11131 of the smoke exhaust channel may be connected to the upper end of the battery pack 13, so as to control the smoke exhausted by the exhaust valve within the range of the smoke exhaust channel 1113, reduce the smoke entering between the electrode of the battery pack 13 and the cover body 1111, reduce the potential safety hazard, and improve the safety performance.

Moreover, because the smoke exhaust channel 1113 is formed on the lower surface of the cover body 1111, the wall thickness of the cover body 1111 at the smoke exhaust channel 1113 is the wall thickness of the top wall 11132 of the smoke exhaust channel, the wall thickness of the top wall 11132 of the smoke exhaust channel can be larger than the wall thickness of the cover body 1111 at other positions outside the accommodating cavity 1121, and the wall thickness of the top wall 11132 of the smoke exhaust channel is larger, so that the effect of reinforcing the structural strength can be achieved, and the smoke exhaust channel 1113 is used for bearing high-temperature smoke, so that the high-temperature and breakdown resistance can be improved, and the safety performance can be further improved.

According to the embodiment of the application, the wall thickness of the top wall 11132 of the smoke exhaust channel is larger, so that the structural strength of the smoke exhaust channel 1113 is improved, the influence of high-temperature smoke on the cover body 111 is reduced, the breakdown risk is reduced, and the safety performance is improved.

According to some embodiments of the present application, the smoke evacuation channel 1113 may be integrally provided with the cover body 1111.

In the present embodiment, the lid body 1111 and the smoke exhaust duct 1113 may be made of plastic material such as CFRP (Carbon fiber reinforced plastic carbon fiber reinforced plastic) or metal material such as aluminum alloy, steel, etc., and the smoke exhaust duct 1113 and the lid body 1111 are integrally die-cast, so that the assembly is simple and the structural strength is high.

According to the smoke exhaust channel 1113 of the embodiment of the application, the smoke exhaust channel 1113 and the cover body 1111 are integrally arranged, so that the production difficulty is reduced, and the production efficiency and the overall structural strength are improved.

According to some embodiments of the present application, as shown in fig. 3-6, the cover body 1111 may include a cover plate 11111 and a bezel 11112.

The cover plate 11111 may be disposed in a flat plate shape, the plurality of cover bodies 1112 may be disposed on a lower surface of the cover plate 11111, the frame 11112 may be disposed on a lower surface of the cover plate 11111 and along a periphery of the cover plate 11111, and the plurality of cover bodies 1112 may be disposed on an inner side of the frame 11112 and spaced apart from the frame 11112.

In this embodiment, the frame 11112 is configured to be connected with the lower case 112 in a matching manner, and the plurality of covers 1112 are disposed on the inner side of the frame 11112 and spaced apart from the frame 11112, so as to leave a space for accommodating the flue gas, facilitate the discharge of the flue gas, and improve the safety performance and structural strength of the battery 10.

According to some embodiments of the present application, as shown in fig. 6, the height of the bezel 11112 may be greater than the height of the housing 1112.

In this embodiment, the height of the frame 11112 may be greater than the height of the cover 1112, so as to facilitate the assembly of the cover 111 and the lower case 112, reduce the interference probability between the cover 1112 and the upper component of the lower case 112, and improve the tightness of the battery case 11.

According to the embodiment of the application, the height of the frame 11112 is larger than that of the cover 1112, so that interference possibly generated in the assembly process is reduced, and the assembly efficiency is improved.

In some embodiments, the height of the cover 1112 may be greater than the height of the frame 11112, so as to increase the assembly height of the cover 1112 and the battery pack 13 by increasing the height of the cover 1112, thereby improving the overall structural strength.

According to some embodiments of the present application, the top surface of the receiving cavity 1121 is provided with a concave-convex structure adapted to match the shape of the upper surface of the battery pack 13.

Through set up concave-convex structure at the top surface that holds chamber 1121 to make concave-convex structure and the upper surface shape matching of group battery 13, with in the assembly process, after group battery 13 goes deep into holding chamber 1121, the upper surface of group battery 13 can cooperate with concave-convex structure, further promotes whole assembly strength, promotes the structural strength of battery 10.

According to some embodiments of the present application, the cover 1112 and the cover body 1111 may be integrally provided.

In the present embodiment, the cover 1112 and the smoke exhaust duct 1113 may be made of plastic material such as CFRP (Carbon fiber reinforced plastic carbon fiber reinforced plastic) or metal material such as aluminum alloy, steel, or the like, and the cover 1112 and the cover body 1111 may be integrally die-cast, so that the assembly is simple and the structural strength is high.

According to some embodiments of the present application, the present application further provides a battery case 11, including a lower case 112 and a cover 111 according to any of the above embodiments, the lower case 112 has a mounting cavity for accommodating the battery pack 13, and the cover body 1111 is covered on the lower case 112.

It can be understood that the cover 111 in this embodiment may be the cover 111 in any of the above embodiments, and the battery case 11 of the present application has the technical features and the corresponding technical effects of the cover 111 in any of the above embodiments, which are not described herein in detail.

According to the battery box 11 provided by the embodiment of the application, the structural strength of the cover 111 is improved by arranging the cover 1112, the battery pack 13 stretches into the accommodating cavity 1121 and is matched with the cover 1112, so that the mounting strength and the structural stability of the cover 111 are improved, the overall structural strength is improved, abnormal sound generated by vibration of the battery box 11 in the using process is reduced in an auxiliary mode, and the safety performance is improved.

According to some embodiments of the present application, a battery 10 may include a battery case 11 and a plurality of battery packs 13 according to any of the embodiments described above, the plurality of battery packs 13 being mounted in the mounting cavity, and at least a portion of the battery packs 13 extending into the receiving cavity 1121.

According to the battery 10 provided in the embodiment of the application, the battery 10 is matched with the cover 1112 by enabling the battery pack 13 to extend into the accommodating cavity 1121, so that the installation strength and the structural stability of the cover 111 are improved, the overall structural strength is improved, abnormal sound generated by vibration of the battery 10 in the use process is reduced in an auxiliary manner, and the safety performance of the battery 10 is improved.

According to some embodiments of the present application, as shown in fig. 6, the contact height H1 of the cover 1112 and the battery pack 13 and the height H2 of the battery pack 13 satisfy: H1/H2 is less than or equal to 1/10 and less than or equal to 1/4.

In this embodiment, by limiting the relationship between the contact height H1 of the cover 1112 and the battery pack 13 and the height H2 of the battery pack 13, the contact height of the cover 1112 and the battery pack 13 is minimized, so that assembly and machining tolerances can be overcome, sufficient assembly height is provided, assembly strength is met, the contact height of the cover 1112 and the battery pack 13 cannot be too large, assembly difficulty is increased, assembly is difficult, assembly difficulty is reduced, and assembly efficiency is improved.

Specifically, the range of H1/H2 is [1/10,1/4], wherein H1/H2 may be 1/10, 1/9, 1/8, 1/7, 1/6, 1/5, 1/4 or other values between 1/10-1/4, without limitation.

According to some embodiments of the present application, as shown in fig. 7, the top end of the battery pack 13 may be provided with an explosion-proof valve, and the dimension W1 of the explosion-proof valve in the width direction of the smoke exhaust passage 1113 and the width W2 of the smoke exhaust passage 1113 satisfy: W2/W1 is less than or equal to 1.1 and less than or equal to 3.

In the present embodiment, the relation between the width W1 of the explosion-proof valve and the width W2 of the smoke exhaust passage 1113 is defined to ensure that the gas exhausted from the explosion-proof valve can effectively enter the smoke exhaust passage 1113.

Specifically, the value range of W2/W1 is [1.1,3], where W2/W1 may be 1.1, 1.3, 1.5, 1.8, 2, 2.5, 3, or other values between 1.1 and 3, which are not limited herein.

According to some embodiments of the present application, there is also provided an electrical device comprising the battery 10 of any of the above aspects, and the battery 10 is used to provide electrical energy to the electrical device.

The powered device may be any of the devices or systems described above that employ the battery 10.

According to some embodiments of the present application, as shown in fig. 3 to 8, the present application provides a cover 111 of a battery 10, the cover 111 including a cover body 1111, a plurality of covers 1112, a plurality of smoke exhaust passages 1113, and a connection passage 1114.

The cover body 1111 includes a cover plate 11111 and a frame 11112, and the frame 11112 is disposed on a lower surface of the cover plate 11111 and along an edge of the cover plate 11111.

The cover body 1112 is annular setting, and a plurality of covers 1112 are located the lower surface of apron 11111 and are set up with frame 11112 spaced apart, and the height of cover body 1112 is less than the height of frame 11112, and cover body 1112 and the lower surface of apron 11111 limit jointly and hold chamber 1121, hold the top surface of chamber 1121 and be equipped with concave-convex structure, concave-convex structure is suitable for the upper surface shape matching with group battery 13, and the medial surface of cover body 1112 is suitable for the outline shape matching with group battery 13 lateral wall. The cover 1112 may be provided in plurality, and the number of the covers 1112 is adapted to correspond to the number of the battery packs 13.

Each accommodating cavity 1121 is internally provided with a smoke discharging channel 1113, the smoke discharging channels 1113 are arranged on the lower surface of the cover plate 11111, the side walls 11131 of the smoke discharging channels extend downwards from the lower surface of the cover plate 11111, the thickness of the cover plate 11111 at the smoke discharging channels 1113 is larger than that of other areas of the cover plate 11111 outside the accommodating cavities 1121, the lower side of each smoke discharging channel 1113 is provided with an opening 11133, the opening 11133 is suitable for corresponding to an explosion-proof valve of the battery pack 13, two openings 11122 are respectively arranged on two sides of the cover body 1112 in the length direction of the smoke discharging channels 1113, and two ends of the length direction of the smoke discharging channels 1113 are respectively connected with the openings 11122 and are communicated with the outer side of the cover body 1112 through the openings 11122.

The connecting passage 1114 is provided between two adjacent cover bodies 1112 along the length direction of the smoke discharging passage 1113, and both ends of the connecting passage 1114 communicate with the two smoke discharging passages 1113 through openings 11122 in the two cover bodies 1112, respectively.

It should be noted that, without conflict, the embodiments and features of the embodiments in the present application may be combined with each other.

The foregoing is merely a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and variations may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A cover for a battery, comprising:

a cover body;

2. The cover of a battery according to claim 1, comprising:

3. The battery cover of claim 1, wherein the side wall of the smoke evacuation channel extends downward from the lower surface of the cover body, the wall thickness of the cover body at the smoke evacuation channel being greater than the wall thickness of the cover body at other locations outside the receiving cavity.

4. The battery cover according to claim 1, wherein the smoke evacuation channel is integrally provided with the cover body.

5. The cover for a battery according to any one of claims 1 to 4, wherein the cover body includes:

6. The battery cover of claim 5, wherein the rim has a height greater than a height of the cover.

7. The cover of a battery according to any one of claims 1 to 4, wherein the top surface of the receiving chamber is provided with a concave-convex structure adapted to match the shape of the upper surface of the battery pack.

8. The cover of a battery according to any one of claims 1 to 4, wherein the cover is integrally provided with the cover body.

9. A battery box, comprising:

the battery cover according to any one of claims 1 to 8, wherein the cover body is provided to cover the lower case.

10. A battery, comprising:

the battery case according to claim 9;

11. The battery of claim 10, wherein a contact height H1 of the cover with the battery pack and a height H2 of the battery pack satisfy:

1/10≤H1/H2≤1/4。

12. the battery according to claim 10, wherein an explosion-proof valve is provided at a top end of the battery pack, and a dimension W1 of the explosion-proof valve in a width direction of the smoke discharge passage and a width W2 of the smoke discharge passage satisfy:

1.1≤W2/W1≤3。

13. an electrical device comprising a battery as claimed in any one of claims 10 to 12 for powering the electrical device.