CN220895676U - Battery box, battery pack and electric equipment - Google Patents

Abstract

The application discloses a battery box, a battery pack and electric equipment. The battery box body comprises a body and a patch plate, the body comprises a mounting plate, the mounting plate is a constant-thickness plate, and the patch plate is fixed on the mounting plate to increase the local thickness of the battery box body. According to the battery box body, the patch board is fixed on the mounting plate to increase the local thickness of the battery box body, so that the local strength of the battery box body can be increased, the battery box body can meet the mounting requirements of parts such as connectors of a battery pack when the plate thickness of the mounting plate is thinner, and the influence on the energy density of the battery pack is small.

Description

Battery box, battery pack and electric equipment

Technical Field

The application relates to the field of batteries, in particular to a battery box, a battery pack and electric equipment.

Background

The battery pack may include a battery case generally manufactured by cold stamping, and thus, the thickness of the battery case is generally set to be equal. In the related art, in order to increase the energy density of the battery pack, the thickness of the battery case tends to be thin, but when the thickness of the battery case is thin, it is difficult to satisfy the mounting requirements of the components such as the connectors of the battery pack.

Disclosure of utility model

In view of the above problems, the application provides a battery box, a battery pack and electric equipment, which can enable the battery box to meet the installation requirements of parts such as connectors of the battery pack.

In a first aspect, the application provides a battery box, the battery box comprises a body and a patch board, the body comprises a mounting plate, the mounting plate is a constant-thickness plate, and the patch board is fixed on the mounting plate to increase the local thickness of the battery box.

According to the technical scheme, the patch board is fixed on the mounting board to increase the local thickness of the battery box body, so that the local strength of the battery box body can be increased, the battery box body can meet the mounting requirements of parts such as connectors of a battery pack when the board thickness of the mounting board is thinner, and the influence on the energy density of the battery pack is smaller.

In some embodiments, the patch panel has a thickness that is greater than the thickness of the mounting plate. Therefore, the patch board with larger thickness can increase the local strength of the battery box body, so that the battery box body meets the installation requirement of the connector of the battery pack, and the influence on the energy density of the battery pack is smaller.

In some embodiments, the mounting plate is provided with a through hole and the patch panel covers the through hole. Thus, the through holes on the mounting plate enable the connectors of the battery pack to be mounted conveniently, so that the connectors can be connected with electrical components in the battery pack.

In some embodiments, the patch panel is fixedly attached to the inner surface of the mounting plate. Therefore, the patch board is connected with the inner surface of the mounting plate, so that the patch board has small influence on the outer surface of the mounting plate, and the probability of interference of the battery pack and other external parts is reduced.

In some embodiments, the patch panel is formed with a convex hull that is positioned within the through-hole, the surface of the convex hull facing outward of the battery case being flush with the outer surface of the mounting plate. Therefore, the convex hull not only can play a role in positioning and improve the overall position degree of the patch board, but also faces the outer surface of the battery box body to be flush with the outer surface of the mounting plate, so that impurities such as dust and liquid are difficult to accumulate at the edge of the through hole, and the connector installed on the patch board can be abutted against the outer surfaces of the patch board and the mounting plate at the same time, and the stability of connector installation is improved.

In some embodiments, the convex hull is a profiled structure of the patch panel. Therefore, the convex hull is simple to manufacture and easy to operate due to the forming mode of the convex hull, and the manufacturing cost of the patch board is reduced.

In some embodiments, the battery case includes a first weld connecting the mounting plate and the patch panel, the first weld disposed around the through hole. Therefore, the first welding seam can enable the patch board to be in sealing connection with the mounting plate, and the air tightness of the battery pack can be improved while the connection strength of the patch board and the mounting plate is improved.

In some embodiments, the battery case includes a second weld connecting the mounting plate and an edge of the patch panel. Therefore, the second welding seam can enable the patch board to be connected with the mounting plate in a fitting mode, and the risk of edge warping of the patch board is reduced.

In some embodiments, the number of second welds is a plurality, the plurality of second welds being spaced apart along the circumference of the patch panel. As such, the plurality of second welds may reduce the risk of the plurality of edges of the patch panel from lifting.

In some embodiments, the battery case includes a first seal that connects adjacent two second welds along the perimeter of the patch panel and seals the surface connecting the edge of the patch panel and the mounting plate. Therefore, the first sealing piece can further enable the patch board to be in sealing connection with the mounting plate, and the air tightness of the battery pack is improved.

In some embodiments, the first seal is coupled to an inner surface of the mounting plate. Therefore, the first sealing element is in sealing connection with the edge of the patch board and the inner surface of the mounting plate, so that the impact on the first sealing element is reduced, and the service life of the battery pack is prolonged.

In some embodiments, the battery compartment includes fasteners disposed on the patch panel, the fasteners extending through the patch panel. In this manner, the fastener may facilitate installation of the connector of the battery pack on the patch panel.

In some embodiments, the battery case includes a second seal disposed around the fastener and sealing a surface connecting the fastener and the patch panel. Therefore, the second sealing piece can enable the patch board to be in sealing connection with the fastening piece, and the probability that impurities such as dust and liquid enter the battery pack through a gap between the fastening piece and the patch board is reduced.

In some embodiments, the patch panel has a thickness greater than or equal to 1mm. Thus, the thickness of the patch board can meet the installation requirement of the connector.

In a second aspect, the present application provides a battery pack comprising the battery case of any one of the above embodiments. The patch board is fixed on the mounting board to increase the local thickness of the battery box body, so that the local strength of the battery box body can be increased, the battery box body can meet the mounting requirements of parts such as connectors of a battery pack when the board thickness of the mounting board is thinner, and the influence on the energy density of the battery pack is smaller.

In some embodiments, the battery pack includes a connector mounted on the patch panel. Thus, the connector can electrically connect the electrical components of the battery pack with an external device.

In a third aspect, the present application provides a powered device, including a battery pack according to any one of the embodiments, where the battery pack is configured to provide electrical energy.

The foregoing description is only an overview of the present application, and is intended to be implemented in accordance with the teachings of the present application in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present application more readily apparent.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the accompanying drawings. In the drawings:

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

fig. 2 is a schematic view illustrating a structure of a battery pack according to some embodiments of the present application;

FIG. 3 is a schematic view of an exploded structure of a battery pack according to some embodiments of the present application;

fig. 4 is a schematic view illustrating a structure of a battery pack according to some embodiments of the present application;

fig. 5 is a schematic view illustrating a structure of a battery pack according to some embodiments of the present application;

FIG. 6 is a schematic illustration of the construction of a patch panel according to some embodiments of the present application;

Fig. 7 is a schematic structural view of a patch board according to some embodiments of the present application.

Reference numerals illustrate:

A vehicle 1000;

battery pack 100, controller 200, motor 300;

The battery box 10, the first part 11, the second part 12, the body 13, the mounting plate 131, the through hole 132, the inner surface 133, the patch plate 14, the opening 141, the convex hull 142, the first welding seam 15, the second welding seam 16, the first sealing member 17, the fastening member 18 and the second sealing member 19;

battery cell 20, connector 30, bolt 40.

Detailed Description

Embodiments of the technical scheme of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present application, and thus are merely examples, and are not intended to limit 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 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 of the application and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion.

In the description of embodiments of the present application, the technical terms "first," "second," and the like are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.

Reference herein 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 appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In the description of the embodiments of the present application, the term "plurality" means two or more (including two), and similarly, "plural sets" means two or more (including two), and "plural sheets" means two or more (including two).

In the description of the embodiments of the present application, the orientation or positional relationship indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like should be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to specific circumstances.

Currently, the application of power batteries is more widespread from the development of market situation. The power battery is not only applied to energy storage power supply systems such as hydraulic power, firepower, wind power and solar power stations, but also widely applied to electric vehicles such as electric bicycles, electric motorcycles, electric automobiles, and the like, and a plurality of fields such as military equipment, aerospace, and the like. With the continuous expansion of the application field of the power battery, the market demand of the power battery is also continuously expanding.

Generally, the battery pack is generally required to be mounted with connectors such as water inlet and outlet, high/low pressure connectors, explosion-proof valves, etc. For the connector to be installed on the battery box, the sealing press-riveting nut is required to be installed on the body of the battery box, and the minimum plate thickness of the nut for the body of the battery box is required to be 1mm generally; however, in the case of a battery pack having a high energy density, it is necessary to reduce the thickness of the battery case to, for example, 0.7mm. However, a 0.7mm battery box cannot be provided with a press-rivet nut suitable for a plate thickness of 1mm or more, and the battery box is generally a cold-punched part, cannot be provided with a hot-formed patch plate structure, and cannot be locally thickened.

In order to solve the problem that the thickness of the battery box body does not meet the installation requirement of the connector, the application provides the battery box body, and the patch board is installed on the body of the battery box body, so that the local thickness of the battery box body is increased, and the battery box body meets the installation requirement of the connector.

The battery box body disclosed by the embodiment of the application can be used for a battery pack, and the battery pack can be used as electric equipment of a power supply or various energy storage systems using the battery pack as an energy storage element. The powered device may be, but is not limited to, a cell 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. 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 embodiments take a powered device according to an embodiment of the present application as an example of the vehicle 1000.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle 1000 according to some embodiments of the application. The vehicle 1000 may be a fuel oil vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or a range-extended vehicle. The battery pack 100 is provided in the interior of the vehicle 1000, and the battery pack 100 may be provided at the bottom or the head or the tail of the vehicle 1000. The battery pack 100 may be used for power supply of the vehicle 1000, for example, the battery pack 100 may serve as an operating power source of the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, the controller 200 being configured to control the battery pack 100 to power the motor 300, for example, for operating power requirements during start-up, navigation, and travel of the vehicle 1000.

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

Referring to fig. 2 and 3, fig. 2 is a schematic structural diagram of a battery pack 100 according to some embodiments of the present application, and fig. 3 is an exploded structural diagram of the battery pack 100 according to some embodiments of the present application. The battery pack 100 includes a battery case 10 and a battery cell 20, and the battery cell 20 is accommodated in the battery case 10. The battery case 10 is used to provide an accommodating space for the battery cell 20, and the battery case 10 may have various structures.

In some embodiments, the battery case 10 may include a first portion 11 and a second portion 12, the first portion 11 and the second portion 12 being overlapped with each other, the first portion 11 and the second portion 12 together defining an accommodating space for accommodating the battery cell 20. The second portion 12 may be a hollow structure with one end opened, the first portion 11 may be a plate-shaped structure, and the first portion 11 covers the opening side of the second portion 12, so that the first portion 11 and the second portion 12 together define a containing space; the first portion 11 and the second portion 12 may be hollow structures each having an opening at one side, and the opening side of the first portion 11 is engaged with the opening side of the second portion 12. Of course, the battery case 10 formed by the first and second portions 11 and 12 may be of various shapes, such as a cylinder, a rectangular parallelepiped, etc.

The first portion 11 and/or the second portion 12 may serve as a body 13 of the battery case 10, the body 13 being a main portion of the battery case 10.

In the battery pack 100, the plurality of battery cells 20 may be connected in series, parallel or a series-parallel connection, wherein the series-parallel connection refers to that the plurality of battery cells 20 are connected in series or parallel. The plurality of battery cells 20 can be directly connected in series or in parallel or in series-parallel, and then the whole formed by the plurality of battery cells 20 is accommodated in the battery box 10; of course, the battery pack 100 may also be a battery module formed by connecting a plurality of battery cells 20 in series or parallel or series-parallel connection, and a plurality of battery modules are then connected in series or parallel or series-parallel connection to form a whole and are accommodated in the battery case 10. The battery pack 100 may further include other structures, for example, the battery pack 100 may further include a bus bar member for making electrical connection between the plurality of battery cells 20.

Wherein each battery cell 20 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 cell 20 may be in the shape of a cylinder, a flat body, a rectangular parallelepiped, or other shapes, etc.

Referring to fig. 4 and 5, fig. 4 and 5 are schematic structural diagrams of a battery pack 100 according to some embodiments of the present application. The embodiment of the application provides a battery box 10. The battery case 10 includes a body 13 and a patch plate 14. The body 13 includes a mounting plate 131, the mounting plate 131 is a constant thickness plate, and the patch plate 14 is fixed on the mounting plate 131 to increase the local thickness of the battery case 10.

The battery case 10 is a case for housing the battery cells 20. The shape of the body 13 is not particularly limited and may be cylindrical, square, etc.; the specific matching setting can be carried out according to the setting form of the battery box. In addition, the material of the body 13 is not particularly limited, and may be any material that meets the requirements, and in particular, in order to facilitate processing, the body 13 may be particularly made of a metal material; of course, other materials meeting the requirements of strength and the like can be used, for example, a thinner plate material can be used for the body 13, and the weight of the battery box 10 can be reduced, so that the weight energy density of the battery pack 100 can be optimized, and the cost can be reduced.

In addition, the body 13 may be formed by stamping or welding the body 13. The mounting plate 131 may form a sidewall of the body 13, with the thickness of the mounting plate 131 being equal throughout.

Patch panel 14 may be in the shape of a rounded rectangle and patch panel 14 may be of any material that meets the requirements, such as a metallic material.

To sum up, the patch plate 14 is fixed on the mounting plate 131 to increase the local thickness of the battery box 10, so that the local strength of the battery box 10 can be increased, the battery box 10 can meet the mounting requirements of parts such as the connector 30 of the battery pack 100 when the plate thickness of the mounting plate 131 is thinner, and the influence on the energy density of the battery pack 100 is smaller.

With continued reference to FIG. 4, patch panel 14 has a thickness greater than the thickness of mounting plate 131, according to some embodiments of the present application.

When the thickness of patch panel 14 is greater than the thickness of mounting plate 131, the local thickness of mounting plate 131 increases, with the thickness of mounting plate 131 increasing, and in some embodiments, when the thickness of mounting plate 131 is less than 1mm, patch panel 14 ranges from 1mm to 2.5mm.

In this manner, the thicker patch panel 14 may increase the local strength of the battery case 10, allowing the battery case 10 to meet the installation requirements of the connector 30 of the battery pack 100, and have less impact on the energy density of the battery pack 100.

With continued reference to FIG. 4, mounting plate 131 is provided with a through-hole 132, and patch panel 14 covers through-hole 132, in accordance with some embodiments of the present application.

Specifically, the shape of the through hole 132 is not particularly limited, and may be circular, square, or the like; the specific matching arrangement may be made according to the shape of the connector 30 of the battery pack 100. The area of through-hole 132 is smaller than the area of patch panel 14 so that patch panel 14 can cover through-hole 132 and the edge of patch panel 14 can be attached to mounting plate 131.

Thus, the through holes 132 of the mounting plate 131 facilitate the mounting of the connector 30 of the battery pack 100, so that the connector 30 can be connected to electrical components in the battery pack 100, such as the above-mentioned battery cells 20.

With continued reference to fig. 4, patch panel 14 is fixedly coupled to inner surface 133 of mounting plate 131 in accordance with some embodiments of the present application.

For example, patch panel 14 may be fixedly connected to inner surface 133 of mounting plate 131 by welding, or may be fixedly connected to inner surface 133 of mounting plate 131 by threads, and when patch panel 14 is mounted on inner surface 133 of mounting plate 131, connector 30 occupies less space outside mounting plate 131, and connector 30 has less effect on the outer surface of mounting plate 131.

In this manner, the connection of patch panel 14 to inner surface 133 of mounting plate 131 may result in less impact of patch panel 14 on the outer surface of mounting plate 131, reducing the probability of battery pack 100 interfering with other external components.

In some embodiments, patch panel 14 may also be fixedly attached to an outer surface of mounting plate 131.

Referring to fig. 4 and 6, fig. 6 is a schematic structural diagram of a patch board 14 according to some embodiments of the present application. Patch panel 14 is formed with a convex hull 142, convex hull 142 is located in through hole 132, and the surface of convex hull 142 facing the outside of battery case 10 is flush with the outer surface of mounting plate 131.

Specifically, the convex hull 142 is a structure that is higher than the edge and the center of the patch board 14 and is convex, the shape of the convex hull 142 is not limited, the cross-sectional shape of the convex hull 142 can be triangle, circular arc, square, etc., the convex hull 142 forms a ring shape around the center of the patch board 14, the size of the ring shape is slightly smaller than the size of the through hole 132, so that the convex hull 142 can be fully placed in the through hole 132, the surface of the patch board 14 on one side of the convex hull 142 can be fully attached to the outer surface of the mounting board 131, and when the convex hull 142 is clamped in the through hole 132 of the mounting board 131, the patch board 14 and the mounting board 131 are positioned accurately.

In this way, the convex hull 142 not only has a positioning function and improves the overall position of the patch board 14, but also makes the convex hull 142 face the outer surface of the battery box 10 and the outer surface of the mounting plate 131 flush, so that the edge of the through hole 132 is difficult to accumulate dust, liquid and other impurities, and the connector 30 mounted on the patch board 14 can be simultaneously abutted against the outer surfaces of the patch board 14 and the mounting plate 131, thereby improving the mounting stability of the connector 30.

According to some embodiments of the present application, convex hull 142 is a profiled structure of patch panel 14. In some embodiments, the convex hull 142 may be formed on the patch panel 14 by stamping during the manufacturing process, which facilitates molding while improving the air tightness of the battery pack 100. Therefore, the convex hull 142 is formed in a manner that makes the convex hull 142 simple to manufacture, easy to operate, and reduces the manufacturing cost of the patch board 14.

Referring to fig. 5, according to some embodiments of the present application, the battery case 10 includes a first weld 15 connecting the mounting plate 131 and the patch plate 14, the first weld 15 being disposed around the through hole 132.

For example, the first welding seam 15 may be formed by welding such as arc welding or laser brazing, the first welding seam 15 is located at the outer side of the battery case 10 and is used for connecting the edges of the patch board 14 and the mounting board 131, and the width and thickness of the first welding seam 15 may be specifically set according to the mounting strength of the mounting board 131 and the patch board 14.

The first welding seam 15 is used for sealing and connecting the mounting plate 131 and the patch plate 14, so that the probability that dust, solution and other impurities on the outer surface of the mounting plate 131 enter the inner surface 133 of the mounting plate 131 can be reduced, the air tightness of the battery pack 100 is improved, and meanwhile, the service life of the battery pack 100 is prolonged.

In this way, the first weld 15 may enable the patch panel 14 to be hermetically connected with the mounting plate 131, and may improve the air tightness of the battery pack 100 while improving the connection strength of the patch panel 14 and the mounting plate 131.

With continued reference to fig. 5, according to some embodiments of the application, battery case 10 includes a second weld 16 connecting mounting plate 131 and an edge of patch panel 14.

For example, the second welding seam 16 may be formed by using welding modes such as arc welding and laser brazing, the second welding seam 16 is located at the inner side of the battery box body 10, the second welding seam 16 is a segment welding, the width, thickness and length of the second welding seam 16 can be specifically set according to the connection condition of the mounting plate 131 and the patch plate 14, and the risk of edge warping of the patch plate 14 is reduced by segment welding at the inner side of the battery box body 10.

In this manner, second weld 16 may enable patch panel 14 to be attached to mounting plate 131, reducing the risk of edge lifting of patch panel 14.

With continued reference to FIG. 5, according to some embodiments of the present application, the number of second welds 16 is a plurality, with the plurality of second welds 16 being spaced circumferentially along patch panel 14 as shown.

Specifically, the number of the second welding seams 16 may be specifically set according to the connection condition of the mounting plate 131 and the patch board 14, the number of the second welding seams 16 may be 3, and the second welding seams 16 may be distributed on three edges of the patch board 14, and the number of the second welding seams 16 may be 4, and the two adjacent second welding seams 16 are spaced from each other end to end around the patch board 14.

As such, the plurality of second welds 16 may reduce the risk of the plurality of edges of patch panel 14 from lifting.

With continued reference to fig. 5, according to some embodiments of the present application, battery case 10 includes a first seal 17, as shown in the figure, where first seal 17 connects two adjacent second welds 16 along the perimeter of patch panel 14 and sealingly connects the edge of patch panel 14 and the surface of mounting plate 131.

Specifically, the first sealing member 17 and the second welding seam 16 form a closed annular structure around the circumference of the patch board 14, the first sealing member 17 may be a sealant, and the sealant is located inside the battery box 10 to be beneficial to delay the aging of the welding seam sealant because the environmental corrosion condition inside the battery box 10 is better than the outside.

In this manner, first seal 17 may further seal patch panel 14 to mounting plate 131, improving the air tightness of battery pack 100.

Referring to fig. 4 and 5, according to some embodiments of the present application, the first seal 17 is coupled to the inner surface 133 of the mounting plate 131 as shown.

The edge of the patch board 14 is in sealing connection with the inner surface 133 of the mounting plate 131 by the first sealing member 17, so that the utilization of the space of the outer surface of the mounting plate 131 can be reduced, the probability that dust, solution and other impurities on the inner surface 133 of the mounting plate 131 enter the outer surface of the mounting plate 131 can be reduced, the air tightness of the battery pack 100 is improved, and meanwhile, the service life of the battery pack 100 is prolonged.

In this manner, first seal 17 sealingly connects the edge of patch panel 14 and inner surface 133 of mounting plate 131, reducing the impact first seal 17 receives, facilitating an increase in the service life of battery pack 100.

Referring to fig. 5 and 7, fig. 7 is a schematic diagram illustrating a structure of patch board 14 according to some embodiments of the present application. As shown, battery compartment 10 includes a fastener 18 disposed on patch panel 14, fastener 18 extending through patch panel 14.

Specifically, the patch board 14 may have a plurality of holes 141, the fastener 18 is fixed at the hole 141 of the patch board 14, the connector 30 is mounted on the patch board 14 by matching with the fastener 18, the fastener 18 may be a rivet pressing nut, and the rivet pressing nut uses a universal nut riveting machine, so that the operation is simple, and the overall appearance of the battery box 10 is not affected. The press-riveting nut can be pre-installed with the patch plate 14, and when the press-riveting failure occurs, the patch plate 14 is only required to be replaced, and the whole battery box body 10 is replaced, so that the operation is simple and the cost is lower.

In this manner, fastener 18 may facilitate installation of connector 30 of battery pack 100 on patch panel 14.

With continued reference to fig. 5, according to some embodiments of the present application, battery case 10 includes a second seal 19, as shown, where second seal 19 is disposed around fastener 18 and seals the surface connecting fastener 18 and patch panel 14.

The second sealing member 19 fixes the fastener 18 on the patch board 14, so that the connection strength between the connector 30 and the patch board 14 is increased, the second sealing member 19 can be sealant, the sealant is located inside the battery box 10, and the sealant is located inside the battery box 10 because the environmental corrosion condition inside the battery box 10 is better than the outside, so that the sealant is also beneficial to delaying the ageing of the sealant.

In this manner, second seal 19 may provide a sealed connection between patch panel 14 and fastener 18, reducing the likelihood of dirt, liquids, etc. from entering battery pack 100 through the gap between fastener 18 and patch panel 14.

According to some embodiments of the application, patch panel 14 has a thickness greater than or equal to 1mm. When fastener 18 is a clinch nut, the minimum thickness required for patch panel 14 by the clinch nut is 1mm, and in some embodiments, patch panel 14 is 1mm to 2.5mm thick. As such, patch panel 14 may be thick enough to meet the installation requirements of connector 30.

Referring to fig. 3, a battery pack 100 according to an embodiment of the present application includes the battery case 10 according to any of the above embodiments according to some embodiments of the present application.

The patch plate 14 is fixed on the mounting plate 131 to increase the local thickness of the battery box 10, so that the local strength of the battery box 10 can be increased, the battery box 10 can meet the mounting requirements of parts such as the connector 30 of the battery pack 100 when the plate thickness of the mounting plate 131 is thinner, and the influence on the energy density of the battery pack 100 is smaller.

Referring to fig. 2 and 4, battery pack 100 includes connector 30 mounted on patch panel 14, according to some embodiments of the present application.

Battery pack 100 may include bolts 40 that mate with nuts on patch panel 14 to secure battery pack 100 and patch panel 14, and connector 30 may be connected to an external device for electrical delivery.

In this manner, the connector 30 can electrically connect the electrical components of the battery pack 100 with an external device.

To sum up, according to some embodiments of the present application, the battery case 10 includes the body 13 and the patch panel 14, the body 13 includes the mounting plate 131, the patch panel 14 is sealed and connected to the mounting plate 131 by a welding seam and a sealant to increase the local thickness of the battery case 10, so that the local strength of the battery case 10 can be increased, and the battery pack 100 is mounted on the patch panel 14, so that the battery case 10 can meet the mounting requirements of the components such as the connector 30 of the battery pack 100 and has less influence on the energy density of the battery pack 100 when the plate thickness of the mounting plate 131 is thinner.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application, and are intended to be included within the scope of the appended claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (17)

1. A battery box, comprising:

the body comprises a mounting plate, wherein the mounting plate is a constant-thickness plate; and

And the patch board is fixed on the mounting plate so as to increase the local thickness of the battery box body.

2. The battery box of claim 1, wherein the patch panel has a thickness greater than a thickness of the mounting plate.

3. The battery box of claim 2, wherein the mounting plate is provided with a through hole, and the patch plate covers the through hole.

4. The battery compartment of claim 3, wherein the patch panel is fixedly attached to the inner surface of the mounting plate.

5. The battery box of claim 4, wherein the patch panel is formed with a convex hull located within the through hole, the convex hull facing the exterior surface of the battery box being flush with the exterior surface of the mounting plate.

6. The battery box of claim 5, wherein the convex hull is a profiled structure of the patch panel.

7. The battery box of any of claims 3-6, wherein the battery box includes a first weld connecting the mounting plate and the patch panel, the first weld disposed around the through hole.

8. The battery compartment of any of claims 3-6, wherein the battery compartment includes a second weld joining the mounting plate and an edge of the patch panel.

9. The battery box of claim 8, wherein the number of second welds is a plurality, the plurality of second welds being spaced apart along the circumference of the patch.

10. The battery compartment of claim 9, comprising a first seal that connects adjacent two of the second welds along a perimeter of the patch panel and sealingly connects an edge of the patch panel and a surface of the mounting plate.

11. The battery compartment of claim 10, wherein the first seal is coupled to an inner surface of the mounting plate.

12. The battery compartment of any of claims 1-6, wherein the battery compartment includes a fastener disposed on a patch panel, the fastener extending through the patch panel.

13. The battery compartment of claim 12, comprising a second seal disposed around the fastener and sealingly connecting the fastener and a surface of the patch panel.

14. The battery compartment of any of claims 1-6, wherein the patch panel has a thickness of greater than or equal to 1mm.

15. A battery pack comprising the battery case of any one of claims 1 to 14.

16. The battery pack of claim 15, wherein the battery pack includes a connector mounted on the patch panel.

17. A powered device comprising the battery pack of claim 15 or 16.