Battery and electric device

Abstract

The utility model discloses a battery and an electric device. The battery comprises a box body, the box body comprises a first plate, a second plate and at least one side plate, the first plate and the second plate are oppositely arranged along a first direction, the at least one side plate is connected between the first plate and the second plate, and the at least one side plate, the first plate and the second plate define a containing space; the mounting beam is arranged on the side, facing the second plate, of the first plate and protrudes in the direction away from the first plate in the first direction, and a positioning hole extending in the first direction is formed in the mounting beam; the battery module is arranged in the containing space, a positioning column is arranged on one side, facing the first plate, of the battery module, and the positioning column protrudes and extends in the direction deviating from the battery module in the first direction and is inserted into the positioning hole in the corresponding position. The battery module is positioned through the positioning columns and the positioning holes, the assembling efficiency of the battery is improved, the positioning columns cannot collide with the single batteries, the collision risk of the battery module is reduced, and the reliability of the battery is improved.

Description

Technical Field

[0001] The present application belongs to the field of battery technology, and in particular relates to a battery and an electrical device. Background Art

[0002] With the development of new energy technology, the application of batteries is becoming more and more extensive. For example, batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields.

[0003] As the application field of batteries continues to expand, the market demand is also constantly increasing, and the assembly efficiency of batteries is becoming more and more important. In the battery assembly process, the placement of battery modules into boxes is an important link. During the process of placing battery modules into boxes, it is difficult to accurately position them, and it is easy to bump into battery cells, causing damage to the battery cells, which seriously affects the assembly efficiency and reliability of the battery. Utility Model Content

[0004] The embodiments of the present application provide a battery and an electrical device, which can improve the assembly efficiency and reliability of the battery.

[0005] According to the first aspect of the present application, the present application provides a battery, which includes: a box body, the box body includes a first plate, a second plate and at least one side plate, the first plate and the second plate are arranged opposite to each other along a first direction, at least one side plate is connected between the first plate and the second plate, and is enclosed with the first plate and the second plate to form a accommodating space; a mounting beam, which is arranged on a side of the first plate facing the second plate, and protrudes along the first direction away from the first plate, and the mounting beam is provided with a positioning hole extending along the first direction; and a battery module, which is arranged in the accommodating space, and a positioning column is provided on a side of the battery module facing the first plate, and the positioning column protrudes and extends along the first direction away from the battery module, and is inserted into the positioning hole at the corresponding position.

[0006] Optionally, a recess is formed on one side of the mounting beam away from the first plate along the first direction, a dimension of the recess along the second direction matches a dimension of the battery module along the second direction, and the first direction and the second direction intersect; the battery module is at least partially mounted to the recess.

[0007] Optionally, the battery module is provided with a first connection hole extending along the first direction, and the mounting beam is provided with a second connection hole extending along the first direction; the battery further comprises a connection member, which is passed through and threadedly connected to the first connection hole and the second connection hole.

[0008] Optionally, the outer diameter of the positioning column matches the aperture of the positioning hole, and the aperture of the positioning hole is larger than the aperture of the second connecting hole.

[0009] Optionally, the positioning hole and the second connecting hole both extend from the bottom wall of the recess toward the first plate, and the positioning hole and the second connecting hole are arranged at intervals along the second direction.

[0010] Optionally, a step portion is provided on a side of the battery module facing the first plate, and the step portion overlaps the recessed portion.

[0011] Optionally, the battery module includes an end plate and a plurality of battery cells, the plurality of battery cells are stacked along a third direction, the first direction, the second direction and the third direction are perpendicular to each other, and the end plate is arranged on one side of the plurality of battery cells along the third direction; ends of the plurality of battery cells adjacent to the first plate along the first direction are closer to the first plate than ends of the end plate adjacent to the first plate along the first direction, so as to form a step portion between ends of the plurality of battery cells adjacent to the first plate along the first direction and ends of the end plate adjacent to the first plate along the first direction.

[0012] Optionally, there are two mounting beams, which are arranged at intervals along the third direction, and each mounting beam extends along the second direction, and each mounting beam has a recess; there are two end plates, which are respectively arranged on two opposite sides of the multiple battery cells along the third direction, and respectively form step portions with the multiple battery cells, and the two step portions are respectively overlapped with the recesses of the two mounting beams.

[0013] Optionally, the battery module includes an end plate and multiple battery cells, the multiple battery cells are stacked along a third direction, the first direction and the third direction intersect, the end plate is arranged on one side of the multiple battery cells along the third direction; the positioning column is arranged at the end of the end plate facing the first plate.

[0014] Optionally, there are two mounting beams, the two mounting beams are arranged at intervals along the third direction, each mounting beam extends along the second direction, and the first direction, the second direction and the third direction are perpendicular to each other; a plurality of positioning columns are provided on the side of the battery module facing the first plate, and the plurality of positioning columns are distributed at opposite ends of the battery module along the third direction, and are respectively inserted into the positioning holes of the two mounting beams.

[0015] According to the second aspect of the present application, the present application also provides an electrical device, which includes a battery provided by any of the above embodiments, and the battery is used to provide electrical energy.

[0016] The battery provided by the embodiment of the present application includes a box, a mounting beam and a battery module. The box includes a first plate, a second plate and at least one side plate enclosing a housing space, and the first plate and the second plate are arranged opposite to each other along a first direction. The mounting beam is arranged on a side of the first plate facing the second plate, and extends away from the first plate in a protruding manner in the first direction, so that the mounting beam has a certain height in the first direction, thereby allowing a positioning hole to be opened in the mounting beam. The mounting beam is provided with a positioning hole extending along the first direction, and the positioning hole is arranged on the mounting beam, rather than directly opened on the first plate, so that the positioning hole has a certain depth along the first direction under the premise that the first plate is not penetrated by the positioning hole. The positioning column on the battery module is plugged and matched with the positioning hole at the corresponding position on the mounting beam, which can limit the relative movement of the battery module and the mounting beam in a plane perpendicular to the plug-in direction, thereby positioning the battery module, without repeatedly moving the battery module to adjust its position, and improving the assembly efficiency of the battery. After the positioning column is plugged into the positioning hole at the corresponding position, the positioning column and the positioning hole have a certain matching length along the first direction, which can achieve a more reliable positioning effect. The positioning column is arranged on the battery module and the positioning hole is arranged on the mounting beam. During the assembly of the battery module, the positioning column will not bump against the battery cells of the battery module, thereby reducing the risk of bumping against the battery module and improving the reliability of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the exploded structure of a battery provided in one embodiment of the present application.

[0019] Figure 2 yes Figure 1 Schematic diagram of the structure of the battery mounting beam and battery module shown.

[0020] Figure 3 yes Figure 2 Schematic diagram of the decomposition structure.

[0021] Figure 4 yes Figure 1 Schematic diagram of the structure of the end plate of the battery shown.

[0022] Figure 5 yes Figure 1 Schematic diagram of the exploded structure of the battery module of the battery shown.

[0023] Figure 6 A schematic diagram of the structure of a vehicle provided for one embodiment of the present application. DETAILED DESCRIPTION

[0024] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present application and are not configured to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0026] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The embodiments will be described in detail below in conjunction with the accompanying drawings.

[0027] Figure 1 Schematic diagram of the exploded structure of a battery provided by an embodiment of the present application. Figure 1 The battery 100 provided in the embodiment of the present application includes a box body 10, a mounting beam 20 and a battery module 30. Figure 2 yes Figure 1 The schematic diagram of the structure of the battery mounting beam and the battery module shown, Figure 3 yes Figure 2 Schematic diagram of the decomposition structure. Figures 1 to 3The box body 10 includes a first plate 11, a second plate 12 and at least one side plate 13. The first plate 11 and the second plate 12 are arranged opposite to each other along the first direction X. The at least one side plate 13 is connected between the first plate 11 and the second plate 12, and is enclosed with the first plate 11 and the second plate 12 to form a receiving space 14. The mounting beam 20 is arranged on the side of the first plate 11 facing the second plate 12, and protrudes in the direction away from the first plate 11 along the first direction X. The mounting beam 20 is provided with a positioning hole 21 extending along the first direction X. The battery module 30 is arranged in the receiving space 14. The battery module 30 is provided with a positioning column 311 on the side facing the first plate 11. The positioning column 311 protrudes and extends in the direction away from the battery module 30 along the first direction X, and is inserted into the positioning hole 21 at the corresponding position.

[0028] Exemplarily, the first direction X may be a vertical direction, the first plate 11 forms the bottom plate of the box body 10 , the second plate 12 forms the cover plate of the box body, and the positioning column 311 is disposed at the bottom of the battery module 30 and protrudes and extends vertically downward.

[0029] The side panel 13 may be one or more. Exemplarily, the side panel 13 may be one, and the side panel 13 may be a cylindrical structure, and the side panel 13, the first panel 11, and the second panel 12 are connected to form a cylindrical box 10. Exemplarily, the side panel 13 may be multiple, and the multiple side panels 13 are sequentially connected to form a frame, and the frame, the first panel 11, and the second panel 12 are connected to form a prismatic box 10. Optionally, the side panel 13 may be four, and the box 10 surrounded by the four side panels 13, the first panel 11, and the second panel 12 may be rectangular.

[0030] The first plate 11 and at least one side plate 13 are connected to form a first box body with an opening, and the second plate 12 forms a second box body. The side plate 13 and the first plate 11 can be formed independently, and at least one side plate 13 can be connected to the edge of the first plate 11. The connection method between the side plate 13 and the first plate 11 includes but is not limited to welding, bonding, clamping, etc. At least one side plate 13 can also be integrally formed with the first plate 11.

[0031] The side of the first plate 11 facing the second plate 12 may be the inner side of the first plate 11, that is, the side of the first plate 11 facing the accommodating space 14. The mounting beam 20 is disposed on the inner side of the first plate 11, and the battery module 30 is at least partially supported on the mounting beam 20. The first plate 11 forms a support plate for the battery module 30, and is used to bear the gravity of the battery module 30. After the battery 100 is installed in the electric device, the battery module 30 may be located on the upper side, the lower side, or the side of the first plate 11.

[0032] The mounting beam 20 is provided on the first plate 11. Optionally, the mounting beam 20 may be integrally formed with the first plate 11. Optionally, the mounting beam 20 may also be fixedly connected to the first plate 11, and the connection method between the mounting beam 20 and the first plate 11 is but not limited to welding, riveting, screw connection, bonding, etc. Specifically, the mounting beam 20 extends as a whole along the second direction Y, and the mounting beam 20 may have a main body and two flanges, the two flanges are connected to the two opposite sides of the main body along the second direction Y, and are attached to the first plate 11, and the flanges may be welded, riveted, screwed and / or bonded to the first plate 11, and the third direction Z, the first direction X and the second direction Y are perpendicular to each other.

[0033] The mounting beam 20 protrudes away from the first plate 11 along the first direction X, thereby protruding from the inner surface of the first plate 11. The inner surface of the first plate 11 may be a plane, and the mounting beam 20 is higher than the inner surface of the first plate 11 along the first direction X.

[0034] The positioning hole 21 may extend from the top surface of the mounting beam 20 facing the second plate 12 to the inside of the mounting beam 20. The positioning hole 21 may be a through hole penetrating the mounting beam 20 along the first direction X, or may be a blind hole.

[0035] The number of the positioning holes 21 and the number of the positioning posts 311 are the same, and both can be one or more. The positioning holes 21 and the positioning posts 311 are arranged one-to-one. Specifically, each positioning post 311 and its corresponding positioning hole 21 are arranged opposite to each other along the first direction X.

[0036] The battery 100 provided in the embodiment of the present application includes a box body 10, a mounting beam 20 and a battery module 30. The box body 10 includes a first plate 11, a second plate 12 and at least one side plate 13 that enclose a containing space 14, and the first plate 11 and the second plate 12 are arranged opposite to each other along the first direction X. The mounting beam 20 is arranged on the side of the first plate 11 facing the second plate 12, and protrudes and extends away from the first plate 11 along the first direction X, so that the mounting beam 20 has a certain height in the first direction X, thereby allowing a positioning hole 21 to be opened in the mounting beam 20. The mounting beam 20 is provided with a positioning hole 21 extending along the first direction X. The positioning hole 21 is provided on the mounting beam 20, rather than being directly opened on the first plate 11, which can ensure that the first plate 11 is not penetrated by the positioning hole, so that the positioning hole 21 has a certain depth along the first direction X. The positioning column 311 on the battery module 30 is plugged into the positioning hole 21 at the corresponding position on the mounting beam 20, which can limit the relative movement of the battery module 30 and the mounting beam 20 in a plane perpendicular to the plug-in direction, thereby positioning the battery module 30. There is no need to repeatedly move the battery module 30 to adjust its position, thereby improving the assembly efficiency of the battery 100.

[0037] After the positioning post 311 is inserted into the positioning hole 21 at the corresponding position, the positioning post 311 and the positioning hole 21 have a certain matching length along the first direction X, so that a more reliable positioning effect can be achieved.

[0038] The positioning column 311 is provided on the battery module 30 and the positioning hole 21 is provided on the mounting beam 20 . During the assembly of the battery module 30 , the positioning column 311 will not collide with the battery cells of the battery module 30 , thereby reducing the risk of collision of the battery module 30 and improving the reliability of the battery 100 .

[0039] In some embodiments, a recess 22 is formed on one side of the mounting beam 20 away from the first plate 11 along the first direction X, and the size of the recess 22 along the second direction Y matches the size of the battery module 30 along the second direction Y. The first direction X intersects the second direction Y. The battery module 30 is at least partially mounted to the recess 22 .

[0040] The side of the mounting beam 20 away from the first plate 11 along the first direction X may be the top of the mounting beam 20 , and the recess 22 is recessed from the top surface of the mounting beam 20 along the first direction X toward the inside of the mounting beam 20 .

[0041] The size of the recess 22 along the second direction Y matches the size of the battery module 30 along the second direction Y, which means that the size of the recess 22 along the second direction Y can be exactly equal to the size of the battery module 30 along the second direction Y, or the size of the recess 22 along the second direction Y is slightly larger than the size of the battery module 30 along the second direction Y, so as to ensure that at least part of the battery module 30 can be installed in the recess 22 and initially positioned.

[0042] The battery module 30 is at least partially mounted to the recess 22, which means that at least a portion of the battery module 30 is accommodated in the recess 22. Optionally, the mounting beam 20 may be a strip-shaped member extending along the second direction Y, and the first direction X and the second direction Y intersect. The battery module 30 is a rectangular parallelepiped member, and the dimensions of the mounting beam 20 along the first direction X and the third direction Z are respectively smaller than the dimensions of the battery module 30 along the first direction X and the third direction Z. Only a portion of the battery module 30 along one side of the first direction X is accommodated in the recess 22, and the first direction, the second direction Y and the third direction Z are perpendicular to each other.

[0043] The inventors recognize that, during the assembly process of the battery 100, the battery module 30 is usually hoisted to the first box body portion after the first plate 11 and the side plate 13 of the box body 10 form a first box body portion with an opening on one side. The positioning column 311 and the positioning hole 21 are both located on the side of the battery module 30 away from the opening of the first box body portion. Therefore, during the process of hoisting the battery module 30, the positioning column 311 and the positioning hole 21 may be in a visual blind spot and are not easily directly observed.

[0044] To this end, the embodiment of the present application sets a recess 22 on the mounting beam 20. When the battery module 30 is installed in the box 10, the recess 22 can provide a reference for the assembly position of the battery module 30 to make up for the defect that the positioning column 311 is not easy to be inserted into the positioning hole 21 due to the visual blind spot. After the battery module 30 is installed in the recess 22, the battery module 30 can be roughly positioned in the second direction Y through the recess 22, which is convenient for quickly matching and aligning the positioning column 311 and the positioning hole 21, thereby improving the assembly efficiency of the battery module 30, and further improving the assembly efficiency of the battery 100.

[0045] In some embodiments, the positioning hole 21 extends from the bottom wall of the recess 22 toward the first plate 11 .

[0046] The bottom wall of the recess 22 refers to the wall surface at the end of the extension of the recess 22 along the recess direction. It can be understood that the bottom wall of the recess 22 is at a certain distance from the first plate 11, so that the positioning hole 21 extending from the bottom wall of the recess 22 toward the first plate 11 has a sufficient extension depth.

[0047] The positioning hole 21 can be a circular hole, a square hole, a diamond hole or a hole structure of other suitable shapes. The shape of the positioning post 311 can match the shape of the positioning hole 21, so that the positioning post 311 and the positioning hole 21 are plugged in a form-fitting manner.

[0048] In the embodiment of the present application, the positioning hole 21 is formed in the recess 22, so that when the battery module 30 is installed in the box 10, the relative position between the battery module 30 and the recess 22 is first determined, and then the positioning column 311 and the positioning hole 21 are inserted and matched after being positively opposed, which is conducive to the assembly process of first rough positioning and then precise positioning, thereby improving the assembly efficiency of the battery module 30. In addition, the positioning hole 21 is formed in the recess 22, and the positioning column 311 and the positioning hole 21 are hidden in the recess 22, which can save the space occupied by the battery module 30 in the accommodating space 14 and improve the energy density of the battery 100.

[0049] In some embodiments, the battery module 30 has a first connection hole 312 extending along the first direction X, and the mounting beam 20 has a second connection hole 23 extending along the first direction X. The battery 100 further includes a connector 40 that passes through and is threadedly connected to the first connection hole 312 and the second connection hole 23 .

[0050] The first connection hole 312 may be a through hole extending along the first direction X, and the second connection hole 23 may be a through hole penetrating the mounting beam 20 along the first direction X, or may be a blind hole.

[0051] Optionally, the connecting member 40 may be a screw.

[0052] In the embodiment of the present application, the battery module 30 and the mounting beam 20 are threadedly connected by providing a connector 40 , thereby enhancing the connection strength between the battery module 30 and the mounting beam 20 and improving the installation stability of the battery module 30 .

[0053] Optionally, the first connection hole 312 may include a first hole portion 3121 and a second hole portion 3122, the first hole portion 3121 and the second hole portion 3122 are arranged at intervals along the first direction X, and are respectively located at or adjacent to two opposite ends of the battery module 30 along the first direction X, and the first hole portion 3121 and the second hole portion 3122 are coaxially arranged along the first direction X. The connector 40 may sequentially pass through the first hole portion 3121, the second hole portion 3122, and the second connection hole 23, at least one of the first hole portion 3121 and the second hole portion 3122 is provided with an internal thread, the second connection hole 23 has an internal thread, the connector 40 has an external thread, the connector 40 is threadedly connected to at least one of the first hole portion 3121 and the second hole portion 3122, and is threadedly connected to the second connection hole 23.

[0054] The present application divides the first connection hole 312 into two segmented parts, which can simultaneously connect the two sides of the battery module 30 along the first direction X, save materials, reduce the weight of the battery module 30, and is conducive to the lightweight of the battery 100. At the same time, it also facilitates the installation operation of the connector 40.

[0055] In some embodiments, the outer diameter of the positioning column 311 matches the diameter of the positioning hole 21 , and the diameter of the positioning hole 21 is larger than the diameter of the second connecting hole 23 .

[0056] The outer diameter of the positioning column 311 matches the aperture of the positioning hole 21, which means that the outer diameter of the positioning column 311 can be exactly equal to the aperture of the positioning hole 21, and the aperture of the positioning column 311 can also be slightly smaller than the aperture of the positioning hole 21, so that the positioning column 311 can be inserted into the positioning hole 21, and the radial freedom in the positioning hole 21 is limited, and at the same time, it can avoid the positioning column being misaligned with the positioning hole and causing damage to the connecting hole thread.

[0057] The aperture of the positioning hole 21 is larger than the aperture of the second connection hole 23, and accordingly, the outer diameter of the positioning post 311 is also larger than the aperture of the second connection hole 23. When assembling the battery module 30, the positioning post 311 cannot be inserted into the second connection hole 23, which effectively avoids the positioning post 311 being inserted into the second connection hole 23, causing the battery module 30 to be misaligned or affecting the assembly speed.

[0058] In some embodiments, the positioning holes 21 and the second connection holes 23 are both extended from the bottom wall of the recess 22 toward the first plate 11 , and the positioning holes 21 and the second connection holes 23 are arranged along the second direction Y at intervals.

[0059] The positioning hole 21 and the second connecting hole 23 are both arranged in the recess 22, and the positioning column 311, the positioning hole 21, the second connecting hole 23 and the connecting member 40 are all hidden in the recess 22, which can further save the space occupied by the battery module 30 in the accommodating space 14 and improve the energy density of the battery 100.

[0060] The positioning holes 21 and the second connection holes 23 are arranged at intervals along the second direction Y, which fully utilizes the size space of the recessed portion 22 along the second direction Y and makes the layout more reasonable.

[0061] A plurality of positioning holes 21 may be formed in the recess 22. The plurality of positioning holes 21 may be respectively adjacent to the two ends of the recess 22 along the second direction Y. Accordingly, the battery module 30 is provided with a plurality of positioning posts 311 at positions corresponding to the respective recesses 22. The plurality of positioning posts 311 are respectively adjacent to the two ends of the battery module 30 along the second direction Y, so as to position the two ends of the battery module 30 along the second direction Y at the same time.

[0062] A plurality of second connection holes 23 may be formed in the recess 22. The plurality of second connection holes 23 may be respectively adjacent to both ends of the recess 22 along the second direction Y. Accordingly, the battery module 30 is provided with a plurality of first connection holes 312 at positions corresponding to the respective recesses 22. The plurality of first connection holes 312 are respectively adjacent to both ends of the battery module 30 along the second direction Y, so as to simultaneously connect the battery module 30 and the mounting beam 20 along both ends of the second direction Y, thereby improving the connection reliability and stability between the two.

[0063] In some embodiments, a step portion 313 is disposed on a side of the battery module 30 facing the first plate 11 , and the step portion 313 overlaps the recess 22 .

[0064] The cooperation between the step portion 313 and the recessed portion 22 can limit the relative movement of the battery module 30 and the mounting beam 20 in the third direction Z, thereby limiting the position of the battery module 30 in the third direction Z.

[0065] Optionally, the step portion 313 may be formed at an end portion of the battery module 30 along the third direction Z.

[0066] In some embodiments, the battery module 30 includes an end plate 31 and a plurality of battery cells 32, the plurality of battery cells 32 are stacked along a third direction Z, the first direction X, the second direction Y and the third direction Z are perpendicular to each other, and the end plate 31 is disposed on one side of the plurality of battery cells 32 along the third direction Z. Ends of the plurality of battery cells 32 adjacent to the first plate 11 along the first direction X are closer to the first plate 11 than ends of the end plate 31 adjacent to the first plate 11 along the first direction X, so that a step portion 313 is formed between ends of the plurality of battery cells 32 adjacent to the first plate 11 along the first direction X and ends of the end plate 31 adjacent to the first plate 11 along the first direction X.

[0067] Exemplarily, the first direction X may be a vertical direction. The first plate 11 is disposed below the second plate 12. The end of the battery cell 32 adjacent to the first plate 11 along the first direction X is the bottom of the battery cell 32, and the end of the end plate 31 adjacent to the first plate 11 along the first direction X is the bottom of the end plate 31. The bottom of the battery cell 32 is closer to the first plate 11 than the bottom of the end plate 31, that is, the bottom of the end plate 31 is higher than the bottom of the battery cell 32, thereby forming a step 313 between the bottom of the end plate 31 and the bottom of the battery cell 32.

[0068] The multiple battery cells 32 can be connected in series, in parallel, or in mixed connection. Mixed connection means that the multiple battery cells 32 are connected in series and in parallel.

[0069] In the embodiment of the present application, a step portion 313 is formed at one of the end portions of the end plate 31 and the plurality of battery cells 32 along the first direction X. The step portion 313 can be formed by adjusting the relative positions of the end plate 31 and the plurality of battery cells 32 along the first direction X when the end plate 31 and the plurality of battery cells 32 are assembled. The formation method is simple and convenient.

[0070] In the embodiment of the present application, the battery cell may be a secondary battery cell, which refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0071] The battery cells can be lithium-ion battery cells, sodium-ion battery cells, sodium-lithium-ion battery cells, lithium metal battery cells, sodium metal battery cells, lithium-sulfur battery cells, magnesium-ion battery cells, nickel-hydrogen battery cells, nickel-cadmium battery cells, lead-acid battery cells, etc., which are not limited in the embodiments of the present application.

[0072] A battery cell generally includes an electrode assembly and a casing. The electrode assembly includes a positive electrode, a negative electrode, and a separator. During the charge and discharge process of the battery cell, active ions (such as lithium ions) are embedded and removed back and forth between the positive electrode and the negative electrode. The separator is arranged between the positive electrode and the negative electrode, which can prevent the positive and negative electrodes from short-circuiting, and at the same time allow active ions to pass through. The casing is used to encapsulate components such as the electrode assembly and the electrolyte. The casing can be a steel shell, an aluminum shell, a plastic shell (such as polypropylene), a composite metal shell (such as a copper-aluminum composite shell) or an aluminum-plastic film, etc.

[0073] As an example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, a soft-pack battery cell or a battery cell of other shapes. The prismatic battery cell includes a square shell battery cell, a blade-shaped battery cell, a polygonal battery, such as a hexagonal battery, etc. There is no special limitation in this application.

[0074] In some embodiments, there are two mounting beams 20, which are arranged at intervals along the third direction Z, each mounting beam 20 extends along the second direction Y, and each mounting beam 20 has a recess 22. There are two end plates 31, which are respectively disposed on opposite sides of the plurality of battery cells 32 along the third direction Z, and respectively form step portions 313 with the plurality of battery cells 32, and the two step portions 313 are respectively overlapped with the recesses 22 of the two mounting beams 20.

[0075] The two mounting beams 20 can simultaneously support two opposite ends of the battery module 30 along the third direction Z, and position the two ends respectively through the recesses 22 of the two mounting beams 20, thereby preventing the battery module 30 from being installed skewed.

[0076] The distance between the two mounting beams 20 along the third direction Z may be comparable to the size of the battery module 30 along the third direction Z.

[0077] In some embodiments, the battery module 30 includes an end plate 31 and multiple battery cells 32, the multiple battery cells 32 are stacked along the third direction Z, the first direction X, the second direction Y and the third direction Z are perpendicular to each other, and the end plate 31 is arranged on one side of the multiple battery cells 32 along the third direction Z. Figure 4 yes Figure 1 The schematic diagram of the structure of the end plate of the battery shown. Figure 4 The positioning column 311 is disposed at the end of the end plate 31 facing the first plate 11. The positioning column 311 can be integrally formed with the end plate 31.

[0078] In the embodiment of the present application, the positioning column 311 is arranged on the end plate 31, which will not have any impact on the battery cell 32. The positioning column 311 and the end plate 31 are integrally formed, which simplifies the process.

[0079] In some embodiments, there are two mounting beams 20, and the two mounting beams 20 are arranged at intervals along the third direction Z. Each mounting beam 20 extends along the second direction Y, and the first direction X, the second direction Y, and the third direction Z are perpendicular to each other. A plurality of positioning posts 311 are provided on one side of the battery module 30 facing the first plate 11, and the plurality of positioning posts 311 are distributed at opposite ends of the battery module 30 along the third direction Z, and are respectively plugged into the positioning holes 21 of the two mounting beams 20.

[0080] The present application provides positioning columns 311 at two opposite ends of the battery module 30 along the third direction Z, so as to position the two ends of the battery module 30 and avoid the battery module 30 from being installed skewed.

[0081] Optionally, a plurality of positioning posts 311 may be provided at opposite ends of the battery module 30 along the third direction Z to improve the positioning effect. The plurality of positioning posts 311 are arranged at intervals along the length direction of the mounting beam 20, that is, arranged at intervals along the second direction Y. Accordingly, each mounting beam 20 is provided with a plurality of positioning holes 21, and the positioning holes 21 are arranged one-to-one with the positioning posts 311.

[0082] Optionally, each mounting beam 20 is provided with a plurality of second connection holes 23, which are arranged at intervals along the length direction of the mounting beam 20, that is, the second direction Y. The second connection holes 23 can be arranged adjacent to the positioning holes 21, and the second connection holes 23 are closer to the end of the mounting beam 20 than the adjacent positioning holes 21, so as to improve the connection strength and connection effect between the battery module 30 and the mounting beam 20.

[0083] Figure 5 yes Figure 1 Schematic diagram of the exploded structure of the battery module of the battery shown. In some embodiments, the battery module 30 further includes a band 33, which is wrapped around the end plate 31 and the outside of the plurality of battery cells 32 to bundle and fix the end plate 31 and the plurality of battery cells 32 together. The number of the bands 33 can be two, which are respectively wrapped around the end plate 31 and the plurality of battery cells 32 at opposite ends along the first direction X to improve the bundling effect.

[0084] In some embodiments, the battery module 30 further includes a heating film 34, in which a resistance wire is provided for heating the battery cell 32. There may be multiple heating films 34, and the multiple heating films 34 may be provided on both sides of the multiple battery cells 32 along the second direction Y and on one side of the multiple battery cells 32 along the first direction X. An integrated busbar 35 may be provided on the other side of the multiple battery cells 32 along the first direction X to realize the series-parallel connection of the multiple battery cells 32, as well as the temperature sampling of the battery and the voltage sampling of the battery cells.

[0085] In other embodiments, the battery module 30 may also include a heat exchange plate, and a heat exchange channel is formed in the heat exchange plate for the heat exchange medium to flow through. The heating medium or the cooling medium can flow in the heat exchange channel according to the actual heating demand or cooling demand. The heat exchange plate may also be arranged on both sides of the plurality of battery cells 32 along the second direction Y and on one side of the plurality of battery cells 32 along the first direction X.

[0086] The battery 100 provided in the embodiment of the present application can be used in, but not limited to, electrical devices such as vehicles, ships or aircraft. The power supply system of the electrical device can be composed of the battery disclosed in the present application, which is conducive to improving assembly efficiency.

[0087] According to the second aspect of the present application, an embodiment of the present application further provides an electrical device, which includes a battery 100 provided in any of the above embodiments, and the battery 100 is used to provide electrical energy.

[0088] The electrical device may be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, etc. Among them, the electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc., and the spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc.

[0089] For the convenience of description, the following embodiments are described by taking a vehicle 1000 as an example of an electrical device according to an embodiment of the present application.

[0090] Figure 6 A schematic diagram of the structure of a vehicle provided in one embodiment of the present application. Figure 6 The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 100 is provided inside the vehicle 1000. The battery 100 may be provided at the bottom, head or tail of the vehicle 1000. The battery 100 may be used to power the vehicle 1000. For example, the battery 100 may be used as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery 100 to power the motor 300, for example, to meet the power requirements for starting, navigating and driving the vehicle 1000.

[0091] In some embodiments of the present application, the battery 100 can not only serve as an operating power source for the vehicle 1000, but also serve as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0092] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0093] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0094] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that there may be three relationships. For example, m and / or n can represent: m exists alone, m and n exist at the same time, and n exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0095] In the description of the embodiments of the present application, the term "plurality" refers to more than two (including two).

[0096] In the description of the embodiments of the present application, the orientations or positional relationships indicated by technical terms such as "vertical", "horizontal", "top", "bottom", "inside", "outside", and "circumferential" are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the embodiments of the present application.

[0097] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0098] In the embodiments of the present application, "parallel" includes not only the absolutely parallel situation, but also the roughly parallel situation conventionally recognized in engineering; at the same time, "perpendicular" also includes not only the absolutely perpendicular situation, but also the roughly perpendicular situation conventionally recognized in engineering. For example, if the angle between two directions is 85°-90°, the two directions can be considered perpendicular; if the angle between two directions is 0°-5°, the two directions can be considered parallel.

[0099] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A battery, characterized in that: include: A box body, the box body comprising a first plate, a second plate and at least one side plate, the first plate and the second plate are arranged opposite to each other along a first direction, the at least one side plate is connected between the first plate and the second plate, and is enclosed with the first plate and the second plate to form a containing space; A mounting beam is provided on a side of the first plate facing the second plate and protrudes along the first direction away from the first plate, and the mounting beam is provided with a positioning hole extending along the first direction; as well as A battery module is arranged in the accommodating space. A positioning column is arranged on one side of the battery module facing the first plate. The positioning column protrudes and extends along the first direction away from the battery module and is inserted into the positioning hole at the corresponding position.

2. The battery according to claim 1, characterized in that A concave portion is formed on a side of the mounting beam away from the first plate along the first direction, a size of the concave portion along the second direction matches a size of the battery module along the second direction, and the first direction and the second direction intersect; The battery module is at least partially mounted to the recess.

3. The battery according to claim 2, characterized in that The battery module is provided with a first connection hole extending along the first direction, and the mounting beam is provided with a second connection hole extending along the first direction; The battery further includes a connector, which is passed through and threadedly connected to the first connecting hole and the second connecting hole.

4. The battery according to claim 3, characterized in that The outer diameter of the positioning column matches the aperture of the positioning hole, and the aperture of the positioning hole is larger than the aperture of the second connecting hole.

5. The battery according to claim 3, characterized in that The positioning holes and the second connecting holes both extend from the bottom wall of the recess toward the first plate, and the positioning holes and the second connecting holes are arranged at intervals along the second direction.

6. The battery according to claim 2, characterized in that A step portion is provided on a side of the battery module facing the first plate, and the step portion overlaps the recess.

7. The battery according to claim 6, characterized in that The battery module comprises an end plate and a plurality of battery cells, wherein the plurality of battery cells are stacked along a third direction, wherein the first direction, the second direction and the third direction are perpendicular to each other, and the end plate is disposed on one side of the plurality of battery cells along the third direction; Ends of the plurality of battery cells adjacent to the first plate along the first direction are closer to the first plate than ends of the end plate adjacent to the first plate along the first direction, so as to form the step portion between the ends of the plurality of battery cells adjacent to the first plate along the first direction and the ends of the end plate adjacent to the first plate along the first direction.

8. The battery according to claim 7, characterized in that The number of the mounting beams is two, the two mounting beams are arranged at intervals along the third direction, each mounting beam extends along the second direction, and each mounting beam has the recess; There are two end plates, which are respectively arranged on opposite sides of the battery cells along the third direction and form step portions with the battery cells respectively. The two step portions are respectively overlapped with the recesses of the two mounting beams.

9. The battery according to claim 1, characterized in that The battery module comprises an end plate and a plurality of battery cells, the plurality of battery cells are stacked along a third direction, the first direction and the third direction intersect, and the end plate is arranged on one side of the plurality of battery cells along the third direction; The positioning column is arranged at the end of the end plate facing the first plate.

10. The battery according to claim 1, characterized in that The number of the mounting beams is two, the two mounting beams are arranged at intervals along the third direction, each mounting beam extends along the second direction, and the first direction, the second direction and the third direction are perpendicular to each other; A plurality of positioning posts are provided on one side of the battery module facing the first plate. The plurality of positioning posts are distributed at two opposite ends of the battery module along the third direction and are respectively inserted into the positioning holes of the two mounting beams.

11. An electrical device, characterized in that: The invention comprises a battery according to any one of claims 1 to 10, wherein the battery is used to provide electrical energy.

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