A battery case and a battery device

Abstract

The application discloses a battery box and a battery device, wherein the middle beam and the at least one side beam are connected through the adapter, and the side beam corresponding to the reference end portion is provided with the first groove; after the adapter is accommodated in the first groove, the middle beam and the corresponding side beam can be fixed and connected, so that the effective connection of the middle beam and the side beam is realized, the damage of the middle beam and the side beam caused in the connection process is avoided, meanwhile, the influence of the connection on the single battery can be avoided, and thus the reliability of the battery device can be improved.

Description

Technical Field

[0001] This invention relates to the field of battery technology, and more particularly to a battery housing and battery device. Background Technology

[0002] A battery pack can include various beams and batteries. By connecting the beams, a battery housing can be formed, which facilitates the fixing of the batteries. Therefore, how to achieve the connection between the beams is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0003] This invention provides a battery box and battery device for connecting beams.

[0004] In a first aspect, embodiments of the present invention provide a battery housing, comprising: a frame and a middle beam, wherein the middle beam is located between two opposite side beams in the frame;

[0005] Wherein, at least one end of the intermediate beam is provided with a transition piece, the transition piece fixing the intermediate beam and at least one of the side beams, and the transition piece, the intermediate beam and the side beams are separately provided;

[0006] The end with the adapter is a reference end, and the side beam corresponding to the reference end is provided with a first groove, and at least a portion of the adapter is provided in the first groove.

[0007] Thus, the middle beam and at least one side beam are connected by an adapter, and the side beam corresponding to the reference end is provided with a first groove. After the adapter is accommodated in the first groove, the middle beam and the corresponding side beam can be fixed and connected, thereby realizing the effective connection between the middle beam and the side beam, avoiding damage to the middle beam and the side beam during the connection process, and thus improving the reliability of the battery box.

[0008] Secondly, embodiments of the present invention provide a battery device, including: a battery housing as described in the embodiments of the present invention, and a single battery cell located within the battery housing.

[0009] Thus, the intermediate beam and at least one side beam are connected by an adapter, and the side beam corresponding to the reference end is provided with a first groove. After the adapter is accommodated in the first groove, the intermediate beam and the corresponding side beam can be fixed and connected, thereby realizing the effective connection between the intermediate beam and the side beam, avoiding damage to the intermediate beam and the side beam during the connection process, and also avoiding the impact of the connection on other structures (such as individual batteries), thereby improving the reliability of the battery device. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of a battery box provided in an embodiment of the present invention;

[0011] Figure 2 for Figure 1 An enlarged schematic diagram of the area within the dashed coil a1;

[0012] Figure 3 for Figure 1 An enlarged schematic diagram of another angle within the middle dashed coil a1;

[0013] Figure 4 This is a schematic diagram illustrating the connection method between the adapter and the intermediate beam provided in an embodiment of the present invention;

[0014] Figure 5 This is a schematic diagram of a first groove provided in an embodiment of the present invention;

[0015] Figure 6 This is a schematic diagram of another first groove provided in an embodiment of the present invention;

[0016] Figure 7 This is a schematic diagram showing the arrangement positions of the body and the overlapping part provided in an embodiment of the present invention;

[0017] Figure 8 This is a schematic diagram of the notched structure and the non-notched structure provided in the embodiments of the present invention;

[0018] Figure 9 This is a schematic diagram of the notched structure and the non-notched structure provided in the embodiments of the present invention;

[0019] Figure 10 This is a schematic diagram showing the orthographic projection relationship of the first groove and non-notch structure provided in an embodiment of the present invention;

[0020] Figure 11 This is a schematic diagram of the structure of a battery device provided in an embodiment of the present invention;

[0021] Figure 12 This is a schematic diagram of another battery device provided in an embodiment of the present invention.

[0022] 11, 12 - Side beams, 13 - First side beam, 14 - Second side beam, 20 - Middle beam, 21 - Non-notched structure, 22 - Notched structure, 30 - Adapter, 31 - Base plate, 31a - Body, 31b - Overlapping part, 32 - Protrusion, 40 - Base plate, 50 - Fastener, 61 - Front end, 62 - Rear end, 100 - Battery housing, 200 - Single cell, 300 - Conductive busbar, 400 - Buckle, 501 - Battery management system, 502 - High voltage distribution box, c1 - First groove, c2 - Second groove, c3 - Third groove, t1 - Step, B2 - Second surface. Detailed Implementation

[0023] The specific embodiments of a battery housing and battery device provided by the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0024] This invention provides a battery housing, such as... Figure 1 As shown, it may include: a frame and a middle beam 20, the middle beam 20 being located between two opposite side beams (such as the structures indicated by 11 and 12) in the frame;

[0025] Among them, such as Figure 2 As shown, at least one end of the intermediate beam 20 is provided with a transition member 30, which fixes the intermediate beam 20 and at least one side beam (to... Figure 2 (Taking 12 as an example), the adapter 30, the intermediate beam 20 and the side beam 12 are set separately;

[0026] The end with the adapter 30 is designated as the reference end (e.g., Figure 2 The end shown in the middle dotted coil a2) has a first groove c1 on the side beam 12 corresponding to the reference end, and at least a portion of the adapter 30 is provided in the first groove c1.

[0027] Among them, such as Figure 1 As shown, the intermediate beam 20 has a left end and a right end, and in some embodiments, it can be configured as follows:

[0028] The left end of the intermediate beam 20 is fixed to the left side beam (represented by 11) by a connector 30, while the right end of the intermediate beam 20 is fixed to the right side beam (represented by 12) by other means (such as, but not limited to, direct screwing or gluing).

[0029] Alternatively, the right end of the intermediate beam 20 can be fixed to the right side beam 12 by an adapter 30, while the left end of the intermediate beam 20 can be fixed to the left side beam 11 by other means (such as, but not limited to, direct screwing or gluing).

[0030] Alternatively, the left end of the middle beam 20 is fixed to the left side beam 11 by a connector 30, and the right end of the middle beam 20 is fixed to the right side beam 12 by a connector 30.

[0031] The choice of which end of the intermediate beam 20 is fixed to the side beam using the adapter 30 can be determined according to actual needs and is not limited here.

[0032] Thus, the intermediate beam and at least one side beam are connected by an adapter, and the side beam corresponding to the reference end is provided with a first groove. After the adapter is accommodated in the first groove, the intermediate beam and the corresponding side beam can be fixed and connected (e.g., Figure 3 The diagram shown shows the connection after the connection is made. The intermediate beam 20 and the side beam 12 are connected by the adapter 30, which realizes the effective connection between the intermediate beam and the side beam and avoids damage to the intermediate beam and the side beam during the connection process.

[0033] Furthermore, since the adapter, intermediate beam, and side beam are set separately, they are three independent components, which facilitates the assembly and disassembly of the intermediate beam and side beam, making the assembly method more flexible and easier for later maintenance and improvement.

[0034] In addition, the specific assembly process may include, but is not limited to: first assembling the adapter at the end of the intermediate beam to form component A, and then inserting the adapter in component A into the first groove of the side beam to realize the assembly of component A and the side beam, and finally realizing the assembly of the intermediate beam and the side beam.

[0035] During this assembly process, the adapter not only serves to connect and fix the components, but also to position them relative to the side beams during assembly. It also acts as a limit device to a certain extent, thereby improving the accuracy and efficiency of the assembly.

[0036] In some embodiments, such as Figure 1 As shown, in addition to the two side beams (such as 11 and 12), the frame may also include a first side beam 13 and a second side beam 14. The two side beams (such as 11 and 12), the first side beam 13 and the second side beam 14 can form a frame, so as to set some structures for realizing the functions of the battery device (such as, but not limited to, single cells, conductive busbars, wire harnesses or other devices) in the frame. The frame can protect these structures from external impacts and damage, thereby ensuring that these structures can work normally.

[0037] In some embodiments, such as Figure 4 As shown, the adapter 30 includes: a substrate 31 and a protrusion 32 protruding from the surface of the substrate 31;

[0038] Reference end ( Figure 4 The intermediate beam 20 shown in the figure (which can be regarded as the reference end) has a second groove c2, and the protrusion 32 is provided in the second groove c2;

[0039] At least a portion of the substrate 31 is disposed within the first groove c1.

[0040] In other words, the adapter and the intermediate beam are not made as a single piece, but are made separately. After they are made separately, the adapter and the intermediate beam are then spliced ​​together.

[0041] During assembly, the protrusion in the adapter can be inserted into the second groove of the intermediate beam to connect the adapter to the intermediate beam; then at least a portion of the base plate in the adapter is placed in the first groove to connect the adapter to the side beam, thereby connecting the intermediate beam and the side beam through the adapter.

[0042] Since the protrusions in the adapter can be hidden in the middle beam and at least part of the substrate can be hidden in the side beam, this arrangement can help reduce the impact on other surrounding structures (such as, but not limited to, individual cells) when the middle beam and side beam are connected. This can help improve the energy density of the battery device while ensuring the normal assembly of other structures.

[0043] In some embodiments, such as Figure 4 As shown, the entire substrate 31 is disposed within the first groove c1.

[0044] In this way, the entire substrate can be hidden inside the side beams, and the adapter can be completely hidden in the middle beams and side beams, avoiding any impact on the assembly of other structures and ensuring the normal assembly of other structures.

[0045] Of course, in some embodiments, the substrate may also be partially disposed within the first groove (not shown), to meet the needs of different application scenarios and improve design flexibility.

[0046] In some embodiments, such as Figure 4 As shown, the intermediate beam 20 and the protrusion 32 are fixed by fasteners 50.

[0047] Thus, on the one hand, fixing the intermediate beam and the protrusion with fasteners can facilitate the assembly of the intermediate beam and the protrusion, improve the operability of the assembly, and also improve the connection strength of the intermediate beam and the protrusion, increasing the stability of the connection.

[0048] On the other hand, by fixing the intermediate beam and the protrusion with fasteners, damage to the intermediate beam caused by welding can be avoided, and thus, damage to the intermediate beam can be avoided from causing adverse effects on the surrounding structure.

[0049] In some embodiments, it further includes: a base plate for supporting the frame;

[0050] The outer contour of the first groove c1 projected onto the base plate is T-shaped (as shown in the image). Figure 5 As shown), polygons (such as) Figure 6 (as shown), semi-elliptical (not shown) or semi-circular (not shown).

[0051] In this way, by setting the outer contour shape of the first groove projected onto the base plate, the assembly method of the middle beam and the side beam can be adjusted, thereby meeting the needs of different application scenarios and improving the flexibility of the design.

[0052] Specific assembly methods may include:

[0053] First, combining Figure 5 As shown, the outer contour shape of the first groove c1 projected onto the base plate is T-shaped, for example.

[0054] The assembly method of component A (i.e., the component consisting of the intermediate beam and the adapter when the protrusion in the adapter mentioned above is inserted into the second groove) and the side beam can be as follows:

[0055] The substrate in component A can be along a direction perpendicular to the surface of the base plate (i.e. Figure 5 The direction perpendicular to the paper, and this direction can also be understood as... Figure 2 Insert the component A into the first groove c1 in the F3 direction, so that component A is fixed to the side beam 12.

[0056] Since the outer contour of the first groove c1 is T-shaped, the part shown in the dotted circle a3 can form a locking position, so the substrate can be fixed in the first groove c1, thereby enabling the middle beam and the corresponding side beam 12 to be fixed by the adapter.

[0057] In this way, the substrate can be fixed by simply inserting it into the first groove, thereby fixing the middle beam and the corresponding side beam, simplifying the operation process, improving assembly efficiency, and also simplifying the assembly process.

[0058] Second, combining Figure 6 As shown, the outer contour shape of the orthographic projection of the first groove c1 is a polygon, for example.

[0059] The assembly method of component A and the side beam can be as follows:

[0060] The substrate in component A can be arranged parallel to the surface of the base plate and perpendicular to the arrangement direction of the two side beams (i.e. Figure 6 (As shown in the F1 direction), push it into the first groove c1 so that component A is fixed to the side beam 12.

[0061] In this way, by simply pushing the substrate into the first groove, the substrate can be fixed by the first groove accommodating the substrate, thereby fixing the middle beam and the corresponding side beam, simplifying the operation process and improving assembly efficiency.

[0062] In some embodiments, such as Figure 2 As shown, the substrate 31 includes: a connected body (i.e., Figure 2 The portion of the substrate 31 not circled by the dashed coil a4 shown) and the overlapping portion (such as...) Figure 2 (As shown within the dashed coil a4), the protrusion 32 protrudes from the surface of the body;

[0063] like Figure 3 As shown, a step t1 is provided in the first groove c1, and the overlapping part (such as...) Figure 3 (As shown in the middle dotted coil a5) overlaps on step t1 and is fixed by fastener 50.

[0064] The fasteners may include, but are not limited to, bolts, screws, or studs, as long as they can fasten the two structures, they are all within the protection scope of this invention.

[0065] Furthermore, the number and location of steps t1 are not limited to... Figure 3 As shown, the specific settings can be adjusted according to actual needs and are not limited here; this is just an example. Figure 3 The example shown is merely for illustration.

[0066] Meanwhile, the relative positions of the overlapping part and the main body are not limited to... Figure 2 As shown, the specific settings can be adjusted according to actual needs and are not limited here; this is just an example. Figure 2 The example shown is merely for illustration.

[0067] In addition, it should be noted that the number and location of fasteners should be determined based on factors such as the location and method of the steps, and are not limited here.

[0068] In this way, by setting the steps and fasteners, the overlapping part can be stably fixed on the steps in the first groove, which increases the connection area between the adapter and the side beam, prevents the adapter from shifting, and thus effectively improves the fixing strength and fixing effect of the middle beam and the side beam.

[0069] Furthermore, fastening with fasteners can prevent damage to the side beams caused by welding, better maintain the original structure of the side beams, and thus avoid adverse effects on the function of the side beams themselves, thereby improving the reliability of the battery box.

[0070] In some embodiments, such as Figure 2 As shown, there are two overlapping sections;

[0071] The body has an extension direction along the side beam 12 (e.g.) Figure 2 As shown in the F2 direction, the two overlapping parts are located on opposite sides.

[0072] One point to note is that the two overlapping parts are along... Figure 2The F2 direction is set on opposite sides of the main body (that is...) Figure 2 When shown on the left and right sides:

[0073] Symmetrical settings are possible (e.g.) Figure 2 (as shown), or it can be set asymmetrically (not shown);

[0074] Furthermore, the two overlapping parts are along... Figure 2 There is a certain misalignment in the F1 direction, such as Figure 7 As shown, 31a represents the overlapping part, and 31a represents the main body.

[0075] In other words, the specific location of the two overlapping parts is not limited to... Figure 2 and Figure 7 As shown, the specific settings can be customized according to actual needs to meet the requirements of different application scenarios and improve design flexibility.

[0076] In this way, on the one hand, the two overlapping parts allow the substrate to be stably attached to the step in the first groove, which facilitates the installation and fixation of the substrate and even the adapter. At the same time, it also makes the connection between the substrate and the side beam more reliable. On the other hand, when the middle beam and the protrusion are fixed by fasteners, stress is concentrated. The two overlapping parts can make the force more evenly distributed, avoiding stress concentration that could damage the substrate (or even the adapter) and the side beam.

[0077] In some embodiments, such as Figures 2 to 4 As shown, it also includes: a base plate 40 for supporting the frame, and the first groove c1 is located on the side of the side beam 12 away from the base plate 40;

[0078] A third groove c3 is provided on the side beam 12 corresponding to the reference end. The third groove c3 is located on the side of the side beam 12 facing the bottom plate 40.

[0079] The third groove c3 is provided with fasteners 50 for fixing the side beam 12 and the adapter 30.

[0080] To clarify, Figure 2 and Figure 3 The base plate is not shown in the figure, but the upper part of the side beam 12 can be regarded as the side away from the base plate, and the lower part of the side beam 12 can be regarded as the side facing the base plate.

[0081] Combination Figure 4 As shown, a fastener 50 can be installed in the third groove c3, and the bottom of the adapter 30 (i.e. the side of the adapter 30 facing the base plate 40) and the side beam 12 are connected by the fastener 50.

[0082] The number of fasteners set in the third groove can be one, two, three or more, and can be set according to actual needs. There is no limitation here.

[0083] Thus, the third groove allows the adapter to be fixed to the side beam from the bottom, while also concealing the fasteners within it, preventing them from affecting the assembly of other surrounding structures. Furthermore, when fasteners are also provided on the top of the adapter, dual fixation from both the top and bottom is achieved, further enhancing the stability of the connection between the adapter and the side beam, thereby further improving the stability of the connection between the intermediate beam and the side beam.

[0084] In some embodiments, such as Figure 8 and Figure 9 As shown, the reference end ( Figure 8 and Figure 9 The intermediate beam 20 shown in the figure can be regarded as the reference end) has a first surface (the right side surface of the reference end shown in the figure) facing the side beam 12, which has a notched structure 22 and a non-notched structure 21 composed of the part other than the notched structure 22.

[0085] like Figure 10 As shown, and Figure 10 and Figure 8 Corresponding to the structure shown, on the plane perpendicular to the arrangement direction of the middle beam and the side beam (i.e., plane p0 shown in the figure), the orthographic projection of the non-notch structure 21 is located within the orthographic projection of the first groove c1.

[0086] like Figure 8 and Figure 9 As shown, the adapter includes a substrate 31, which is entirely disposed within the first groove c1; at least a portion of the non-notch structure 21 is located within the first groove c1.

[0087] Among them, Figure 8 In the middle, a portion of the non-notch structure 21 is located within the first groove c1; in Figure 9 In the middle, all non-notch structures 21 are located within the first groove c1.

[0088] Thus, when at least a portion of the non-notch structure is located within the first groove, at least a portion of the non-notch structure can be inserted into the first groove. This not only achieves an effective connection between the intermediate beam and the side beam, but also absorbs assembly errors caused by the connection between the intermediate beam and the side beam, thereby improving the operability of the assembly.

[0089] In some embodiments, such as Figure 8 and Figure 9 As shown, it also includes: a base plate 40 for supporting the frame;

[0090] There is a notched structure 22 between the non-notched structure 21 and the base plate 40;

[0091] The first groove c1 is located on the second surface B2 of the side beam 12 facing the middle beam 20, and there is a gap h0 between the notch structure 22 and the second surface B2.

[0092] Among them, such as Figure 8 and Figure 9 As shown, the first groove c1 is located on the second surface B2, and the second surface B2 is located on... Figure 8 and Figure 9 When considering the left side of the middle beam 12, the portion of the left side of the beam 12 excluding the first groove c1 can be considered as the second surface B2. Furthermore, due to the viewing angle, the second surface B2 appears... Figure 8 and Figure 9 The middle line segment is represented by h1.

[0093] Furthermore, combined Figure 8 and Figure 9 As shown, when there is a notched structure 22 between the non-notched structure 21 and the base plate 40, the notched structure 22 can be set close to the bottom of the intermediate beam 20, which can help to make a gap h0 between the notched structure 22 and the second surface B2.

[0094] This setup has the following advantages:

[0095] When the middle beam is used to fix the individual cells, adhesive can be applied between the middle beam and the individual cells to achieve bonding between the middle beam and the individual cells. During this process, adhesive overflow may occur, and the overflowing adhesive can flow into the notch structure. In this way, the adhesive at the notch structure can improve the connection strength between the middle beam and the side beam and increase the stability of the connection between the middle beam and the side beam.

[0096] During assembly, the intermediate beam can be glued to the individual battery cells first, and then the bottom of the intermediate beam (such as...) can be... Figure 8 and Figure 9 After the lower surface of the intermediate beam 20 (shown) and the bottom of the individual battery are coated with adhesive, the base plate is bonded to achieve bonding of the intermediate beam, individual battery and base plate. In this process, the notch structure can guide the adhesive overflowing between the intermediate beam and individual battery, between the intermediate beam and base plate and between the individual battery and base plate to other spaces, avoiding the accumulation of overflowing adhesive between the base plate and intermediate beam and / or between the base plate and individual battery, thereby avoiding adverse effects on the overall bonding effect and improving the overall bonding strength.

[0097] Specifically, the notch structure can be configured in the following ways: Figure 8 The simple gap shown, or Figure 9The notches with steps shown are not limited here. Any arrangement that can achieve the above-mentioned function is within the protection scope of the embodiments of the present invention.

[0098] Based on the same inventive concept, embodiments of the present invention provide a battery device, such as... Figure 11 As shown, it includes: the battery housing 100 as described in the embodiments of the present invention, and the individual battery cells 200 located within the battery housing 100.

[0099] Each individual battery cell 200 can be fixed to the side of the central beam 20 of the battery housing 100 (e.g., Figure 11 (The left and right sides of the intermediate beam 20 shown).

[0100] exist Figure 11 In this diagram, the number of individual battery cells 200 is not limited to that shown in the figure. The number of individual battery cells 200 can be set according to actual needs and is not limited here.

[0101] Furthermore, multiple individual cells 200 can be combined to form a battery module (such as...). Figure 11 Each individual battery cell 200 located on the same side of the intermediate beam 20 forms a battery module, and the number of battery modules in the battery device is not limited to... Figure 11 The two shown can be multiple, and the specific number can be set according to actual needs; there is no limitation here.

[0102] In addition, combined Figure 11 As shown, during the assembly process, the individual battery 200 can be inserted into the battery box 100 along the direction F2 shown in the figure, and the side of the individual battery 200 can be glued to the side of the intermediate beam 20, thereby realizing the insertion of the individual battery 200 into the battery box 100 from the side.

[0103] This avoids the individual cells being squeezed excessively when inserted into the battery box from the top, thus ensuring the performance of the individual cells and preventing any adverse effects on their performance.

[0104] In some embodiments, the individual cells are bonded to the side beams in the battery case.

[0105] In this way, individual cells can be fixed by the side beams, and when individual cells can also be fixed by the middle beams, individual cells can be fixed from multiple angles, so that individual cells can be stably placed in the battery box, avoiding displacement of individual cells during the use of the battery device and thus preventing abnormal situations from occurring, thereby improving the reliability and safety of the battery device.

[0106] In some embodiments, the battery device may further include a liquid cooling pipe, which may be located on the side of the side beam away from the middle beam, and the liquid cooling pipe may not be located inside the side beam.

[0107] In this way, liquid cooling pipes can be set according to the space inside the battery box to meet the needs of different application scenarios and improve design flexibility; at the same time, it can also avoid the side beam structure becoming too complex when the liquid cooling pipes are located inside the side beam, thereby avoiding the increase in the manufacturing difficulty and cost of the battery box.

[0108] In some embodiments, such as Figure 12 As shown, a conductive bar 300 and a clip 400 are provided on the side of the intermediate beam 20 away from the base plate 40. The clip 400 is used to fix the conductive bar 300 to the top of the intermediate beam 20.

[0109] Among them, Figure 12 Individual cells are not shown in the diagram; for example... Figure 12 As shown, the conductive bus 300 can be a conductive structure extending along the direction F1, and the conductive bus 300 can cross the top of the side beams (such as 11 and 12) (i.e. the side of the side beam away from the base plate 40).

[0110] Furthermore, the number of 400 clips is not limited to... Figure 12 The two shown can also be set to one, three, or more, depending on actual needs, and are not limited here; at the same time, the specific setting of the buckle 400 is not limited to... Figure 12 As shown, as long as the conductive busbar 300 can be fixed to the top of the intermediate beam 20, the specific configuration of the buckle 400 is not limited here.

[0111] And, as Figure 12 As shown, the battery device includes a battery management system 501 and a high-voltage distribution box 502. The battery housing 100 also includes a front end 61 located on the left side beam 11 away from the right side beam 12, and a rear end 62 located on the right side beam 12 away from the left side beam 11. The battery management system 501 can be located at the front end 61, and the high-voltage distribution box 502 can be located at the rear end 62. The conductive busbar 300 can be used to connect the battery management system 501 and the high-voltage distribution box 502.

[0112] Of course, the structure connected at both ends of the busbar is not limited to battery management systems and high-voltage distribution boxes; it can also be used to connect other structures or devices, and is not limited here.

[0113] Furthermore, the battery management system and high-voltage distribution box are not limited to, for example... Figure 12As shown, they can be located on opposite sides of the battery housing (i.e., the front and rear ends), or they can be located on the same side of the battery housing. The specific arrangement can be determined according to actual needs and is not limited here.

[0114] In some embodiments, the battery device may be, but is not limited to, a battery pack.

[0115] In some embodiments, the battery device may include, in addition to the structures described above, other structures for realizing the functions of the battery device (e.g., but not limited to, charge / discharge ports, busbars, flexible circuit boards, etc.), which are not limited herein.

[0116] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A battery housing, characterized in that, The battery box comprises: a frame and an intermediate beam located between two opposite side beams of the frame; wherein at least one end of the intermediate beam is provided with an adapter which fixes the intermediate beam and at least one of the side beams, the adapter, the intermediate beam and the side beam being provided separately; the end provided with the adapter is a reference end, the side beam corresponding to the reference end is provided with a first groove, and at least part of the adapter is arranged in the first groove; the first surface of the reference end towards the side beam has a notch structure and a non-notch structure formed by a part other than the notch structure; the orthogonal projection of the non-notch structure on a plane perpendicular to the arrangement direction of the intermediate beam and the side beam is located in the orthogonal projection of the first groove; the adapter comprises a substrate, and the substrate is entirely arranged in the first groove; at least part of the non-notch structure is arranged in the first groove; the battery box further comprises a bottom plate for bearing the frame; the non-notch structure and the bottom plate have the notch structure therebetween; the first groove is located on the second surface of the side beam towards the intermediate beam, and there is a gap between the notch structure and the second surface; the adapter comprises a substrate and a protruding portion protruding from the surface of the substrate; the reference end has a second groove, and the protruding portion is arranged in the second groove; at least part of the substrate is arranged in the first groove; the substrate comprises a body and a lap portion connected to the body, and the protruding portion protrudes from the surface of the body; the first groove is provided with a step, and the lap portion is lapped on the step and fixed by a fastener; the lap portion has two; the body has opposite two sides arranged along the extension direction of the side beam, and the two lap portions are respectively located on the opposite two sides.

2. The battery pack of claim 1, wherein, The intermediate beam and the protruding portion are fixed by a fastener.

3. The battery pack of claim 1, wherein, Further comprising: a bottom plate for bearing the frame; the outer contour shape of the orthogonal projection of the first groove on the bottom plate is T-shaped, polygonal, semi-elliptical or semi-circular.

4. The battery pack of claim 1, wherein Further comprising: a bottom plate for bearing the frame, and the first groove is located on the side of the side beam away from the bottom plate; the side beam corresponding to the reference end is provided with a third groove, and the third groove is located on the side of the side beam towards the bottom plate; the third groove is provided with a fastener for fixing the side beam and the adapter.

5. A battery device characterized by comprising: Further comprising: the battery box according to any one of claims 1-4, and a single battery located in the battery box.

6. The battery device of claim 5, wherein The single battery is glued to the side beam in the battery box.

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