Battery box and battery pack

Abstract

The utility model provides a battery box and a battery pack, relates to the technical field of batteries, and aims to solve the technical problem that the middle part of a box cover in the prior art is easy to fatigue and fracture. The battery box comprises a box body, a top cover, a pressing strip and a first connecting piece, the box body comprises a frame and a first structural beam, a containing space is defined by the frame, and the first structural beam is located in the containing space and connected with the frame; the top cover is arranged above the accommodating space in a covering manner, and the top cover is provided with a first mounting hole; the pressing strip is arranged on the side, away from the box body, of the top cover, and the pressing strip is provided with a first matching hole; and the first connecting piece penetrates through the first mounting hole and the first matching hole and is connected with the first structural beam.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery box and a battery pack. Background Art

[0002] In the related art, a battery box usually includes a box body and a top cover fixed on the box body, and the middle part of the box cover is often in a free state, so it is easily affected by vibration and moves up and down, which in turn causes fatigue fracture of the middle part of the box cover. Utility Model Content

[0003] The embodiments of the utility model provide a battery box and a battery pack, which can improve the technical problem in the related art that the middle part of the box cover is prone to fatigue fracture.

[0004] In a first aspect, a battery box is provided, the battery box comprising a box body, a top cover, a pressure strip, and a first connecting member. The box body comprises a frame and a first structural beam, the frame encloses a storage space, the first structural beam is located in the storage space and connected to the frame; the top cover is arranged above the storage space, the top cover has a first mounting hole; the pressure strip is arranged on the side of the top cover away from the box body, the pressure strip has a first matching hole; the first connecting member passes through the first mounting hole and the first matching hole and is connected to the first structural beam.

[0005] In one embodiment, the top cover includes a mounting groove, and the pressure strip is disposed in the mounting groove.

[0006] In one embodiment, the frame is connected to the top cover, the length of the pressure strip is greater than the length of the mounting groove, and the bottom surface of the mounting groove is higher than or flush with the surface of the top cover facing away from the frame.

[0007] In one embodiment, the top cover further includes a top cover body adjacent to the mounting groove, and a thickness of the top cover body is equal to a thickness of a bottom of the mounting groove.

[0008] In one embodiment, the top cover further includes a top cover body and a protrusion adjacent to the top cover body, and a thickness of the top cover body is equal to a thickness of a top of the protrusion.

[0009] In one embodiment, the pressure strip includes a bottom plate and side plates located on both sides of the bottom plate, the first matching hole is opened on the bottom plate, and the side plates are arranged to fit the sides of the installation groove.

[0010] In one embodiment, the angle between the side plate and the bottom plate is greater than or equal to 90°.

[0011] In one embodiment, the top cover further has a second mounting hole, the pressure strip further has a second matching hole, and the battery box further includes a second connecting member, which passes through the second mounting hole and the second matching hole and is connected to the frame.

[0012] In one embodiment, the top cover further has a second mounting hole, the pressure strip further has a second matching hole, and the battery box further includes a second connecting member, which passes through the second mounting hole and the second matching hole and is connected to the frame.

[0013] In one embodiment, the battery box further includes a sealing member, wherein the sealing member is located between the top cover and the first structural beam, and a through hole is provided on the sealing member, and the first connecting member also passes through the through hole.

[0014] In one embodiment, the box body also includes two second structural beams parallel to each other, both ends of the second structural beams are connected to the frame, and both ends of the first structural beam are respectively connected to the two second structural beams; the first structural beam and the two second structural beams define two battery cell installation areas.

[0015] In one embodiment, at least one of the second structural beam and the first structural beam is provided with a first adhesive on a side facing the battery cell installation area, and the first adhesive is configured to be bonded to the battery cell adjacent thereto.

[0016] In one embodiment, the battery box further includes at least one first fixing plate, one end of the first fixing plate is connected to the second structural beam, and the other end of the first fixing plate is connected to the first structural beam.

[0017] In one embodiment, the first fixing plate includes a first fixing portion and a second fixing portion connected to each other, the first fixing portion is parallel to the first structural beam and connected to the first structural beam, the second fixing portion is parallel to the second structural beam and connected to the second structural beam, and the first fixing portion is connected to the middle position of the second fixing portion.

[0018] In one embodiment, the box body further includes two middle beams, one end of each of the middle beams is connected to the first structural beam, and the other end is connected to the frame; the two middle beams are arranged opposite to each other and are respectively parallel to the second structural beam.

[0019] In one embodiment, the battery box further includes a second fixing plate, one end of the second fixing plate is connected to the middle beam, and the other end of the second fixing plate is connected to the first structural beam.

[0020] In one embodiment, the first structural beam includes a first platform portion and a second platform portion connected to each other, a first platform surface of the first platform portion close to the top cover side and a second platform surface of the second platform portion close to the top cover side have a height difference, a notch is opened in the middle position of the first platform portion, one end of the second fixing plate passes through the notch and is connected to the middle beam.

[0021] In one embodiment, the second fixing plate includes a first connecting portion, a transition portion, and a second connecting portion which are connected in sequence, the first connecting portion and the transition portion are located on the same straight line, and the transition portion is connected to the middle position of the second connecting portion, and the first connecting portion passes through the notch and is connected to the middle beam.

[0022] In a second aspect, an embodiment of the present invention provides a battery pack, which includes the battery box described in any embodiment of the first aspect.

[0023] Beneficial effects of the embodiments of the utility model:

[0024] For the battery box provided in the embodiment of the utility model, the top cover and the first structural beam are connected by the first connecting member, so that the top cover and the first structural beam can be fixed, thereby limiting the up and down movement of the top cover, which can effectively avoid the problem that the middle part of the top cover is not connected to the box body, causing the top cover to be easily affected by vibration at this position and cause fatigue fracture. In addition, by setting the pressure strip, the force of the first connecting member on the top cover during the installation process can be balanced, thereby enhancing the connection stability between the top cover and the box body. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 It is a schematic diagram of the structure of a battery box or a battery pack according to some embodiments of the utility model;

[0027] Figure 2 yes Figure 1 A top view of

[0028] Figure 3 is a schematic diagram of a partial structure inside a battery pack according to some embodiments of the utility model;

[0029] Figure 4 is a schematic diagram of the structure of the top cover according to some embodiments of the utility model;

[0030] Figure 5 It is a schematic diagram of the structure of the layering strip according to some embodiments of the utility model;

[0031] Figure 6 is a schematic structural diagram of a first fixing plate according to some embodiments of the utility model;

[0032] Figure 7 is a schematic structural diagram of a first structural beam according to some embodiments of the utility model;

[0033] Figure 8 It is a schematic structural diagram of a second fixing plate according to some embodiments of the utility model. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise stated, the directional words such as "upper" and "lower" used generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; while "inside" and "outside" refer to the outline of the device.

[0035] In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "examples", or "some examples" are intended to indicate that a specific feature, structure, material, or characteristic associated with the embodiment or example is included in at least one embodiment or example of the present application. The schematic representation of the above terms does not necessarily refer to the same embodiment or example. In addition, the specific features, structures, materials, or characteristics may be included in any one or more embodiments or examples in any appropriate manner.

[0036] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, unless otherwise specified, "plurality" means two or more.

[0037] When describing some embodiments, the term "connected" and its derivative expressions may be used. For example, when describing some embodiments, the term "connected" may be used to indicate that two or more components are in direct physical or electrical contact with each other. The embodiments disclosed herein are not necessarily limited to the contents of this document.

[0038] At present, many components are usually set in the battery box, and the connection stability between the components is poor, which often leads to a low mode of the battery box. During the use of the battery box (for example, the battery box is used in a car and during the driving of the car), the low-mode battery box is easily affected by vibration, causing fatigue fracture of some components in the battery box, which can easily cause safety accidents.

[0039] In the related art, the battery box includes a box body and a top cover. The box body and the top cover are usually fixed circumferentially, while the middle part of the box cover is in a free state and is easily affected by vibration and moves up and down, which may lead to fatigue fracture of the middle part of the box cover.

[0040] Based on this, the embodiment of the present application provides a battery box, such as Figure 1 and Figure 2 As shown, the battery box 100 includes a box body 10 , a top cover 20 , a pressure strip 30 and a first connecting member 40 .

[0041] like Figure 3 As shown, the box body 10 includes a frame 11 and a first structural beam 12. The frame 11 encloses a receiving space 101. The first structural beam 12 is located in the receiving space 101 and connected to the frame 11. The first structural beam 12 is arranged in the receiving space 101 and connected to the frame 11, so that the structural strength of the box body 10 can be improved.

[0042] like Figure 4 As shown, the top cover 20 is disposed above the accommodating space 101, and the top cover 20 has a first mounting hole 201. The top cover 20 can be used to cover the upper part of the accommodating space 101, and the bottom cover of the box body 10 can cover the lower part of the accommodating space 101, so that the objects (such as battery cells) located in the accommodating space 101 are better protected.

[0043] like Figure 1 , Figure 2 as well as Figure 5 As shown, the pressure strip 30 is arranged on the side of the top cover 20 away from the box body 10, and the pressure strip 30 has a first matching hole 301. The first connecting member 40 passes through the first mounting hole 201 and the first matching hole 301 and is connected to the first structural beam 12 to fix the top cover 20, the pressure strip 30 and the first structural beam 12.

[0044] In this way, the top cover 20 and the first structural beam 12 can be fixed by connecting the first connecting member 40 with the first structural beam 12, thereby limiting the up and down movement of the top cover 20, which can effectively avoid the problem that the middle part of the top cover 20 is not connected to the box body 10, which causes the top cover 20 to be easily affected by vibration and fatigue fracture at this position. In addition, by setting the pressure strip 30, the force of the first connecting member 40 on the top cover 20 during the installation process can be balanced, thereby strengthening the connection stability between the top cover 20 and the box body 10.

[0045] In some examples, the spacing between the first structural beam 12 and the frame bodies on both sides of the first structural beam 12 in the frame 11 is equal, and the frame bodies on both sides of the first structural beam 12 are arranged parallel to the first structural beam 12. In this way, the first structural beam 12 is located in the middle of the accommodating space 101, so that it can face the middle part of the top cover 20, thereby forming a more effective connection with the middle part of the top cover 20, and preventing it from being affected by vibration and fatigue fracture.

[0046] In some examples, the first connecting member 40 may be a screw, and the first structural beam 12 is provided with a threaded hole corresponding to the screw, and the first connecting member 40 and the first structural beam 12 are tightly connected by threaded connection. In other examples, the first connecting member 40 may also be an expansion bolt. The embodiment of the present application does not limit the setting of the first connecting member 40. Of course, in order to smoothly achieve the connection between the first connecting member 40 and the first structural beam 12, an opening or groove matching the first connecting member 40 may be provided on the first structural beam 12, as long as the first connecting member 40 can be used to achieve the fixation between the top cover 20, the pressure strip 30 and the first structural beam 12.

[0047] In some embodiments, Figure 2 and Figure 4 As shown, a mounting groove 22 is formed on the top cover 20 , and the pressure strip 30 is disposed in the mounting groove 22 .

[0048] By providing the mounting groove 22 on the top cover 20 , the holding strip 30 can be well limited, thereby facilitating the fixing and installation of the holding strip 30 .

[0049] In some examples, the first mounting hole 201 is disposed at the bottom of the mounting groove 22 , so that after the pressure strip 30 is placed in the mounting groove 22 , the first mounting hole 201 and the first matching hole 301 can be quickly aligned.

[0050] In some examples, a plurality of first mounting holes 201 may be provided, and the number of first matching holes 301 and the number of first connecting members 40 are consistent with the number of first mounting holes 201 , so that the first connecting members 40 can pass through the first mounting holes 201 one by one and then be connected to the first structural beam 12 .

[0051] For example, the plurality of first mounting holes 201 may be evenly arranged along the length direction of the mounting groove 22 , so as to cooperate with the first connecting member 40 to improve the connection stability between the top cover 20 and the first structural beam 12 .

[0052] In some embodiments, Figure 4 As shown, the top cover 20 also includes a top cover body 21 adjacent to the mounting groove 22, and the thickness of the top cover body 21 is equal to the thickness of the bottom of the mounting groove 22. The upper surface of the top cover body 21 can be located on a first plane, and the upper surface of the bottom of the mounting groove 22 is located on a second plane, and the first plane and the second plane are parallel to each other and not coplanar.

[0053] In this way, the mounting groove 22 can be used to concentrate stress on the edge of the mounting groove, thereby dispersing stress, reducing the degree of stress concentration, and further improving the overall structural strength of the top cover 20. In addition, since the thickness of the bottom of the mounting groove 22 is the same as the thickness of the top cover body 21, it can avoid problems such as easy cracking due to thinning of the bottom of the mounting groove 22 or increased weight of the top cover 20 due to thickening of the bottom of the mounting groove 22.

[0054] In some examples, a side portion of the mounting groove 22 is connected to the top cover body 21 , thereby forming the mounting groove 22 for mounting the pressure strip 30 .

[0055] Exemplarily, the thickness of the side of the mounting groove 22 may be the same as the thickness of the bottom, so that the structural strength of the mounting groove 22 can be ensured.

[0056] In some embodiments, Figure 4 As shown, the top cover 20 includes a top cover body 21 and a protrusion 23 adjacent to the top cover body 21 , and the thickness of the top cover body 21 is equal to the thickness of the top of the protrusion 23 .

[0057] The upper surface of the top cover body 21 may be located on a first plane, and the upper surface of the top of the protrusion 23 may be located on a third plane, the first plane and the third plane are parallel to each other and not coplanar. For example, the first plane may be located between the second plane and the third plane.

[0058] In this way, the protrusion 23 can be used to concentrate stress on the edge of the protrusion 23, thereby dispersing stress, reducing the degree of stress concentration, and further improving the overall structural strength of the top cover 20. In addition, since the thickness of the top of the protrusion 23 is the same as the thickness of the top cover body 21, it can avoid problems such as easy cracking due to thinning of the top of the protrusion 23 or increased weight of the top cover 20 due to thickening of the top of the protrusion 23.

[0059] In some examples, a side portion of the protrusion 23 is connected to the top cover body 21 , thereby forming the protrusion 23 .

[0060] Exemplarily, the thickness of the side of the protrusion 23 may be the same as the thickness of the top, so that the structural strength of the protrusion 23 can be ensured.

[0061] In some examples, a plurality of protrusions 23 are arranged at intervals along the length direction of the mounting groove 22. This is beneficial to further improve the overall structural strength of the top cover 20.

[0062] In some embodiments, Figure 4 As shown, the top cover 20 further includes a recess 24, and the thickness of the bottom of the recess 24 is equal to the thickness of the top cover body 21. The recess 24 can be used to concentrate stress on the edge of the recess 24, thereby dispersing stress, reducing the degree of stress concentration, and thus improving the overall structural strength of the top cover 20. In addition, since the thickness of the bottom of the recess 24 is the same as the thickness of the top cover body 21, it can avoid problems such as easy rupture due to thinning of the bottom of the recess 24 or increased weight of the top cover 20 due to thickening of the bottom of the recess 24.

[0063] In some examples, the bottom of the recess 24 may be located on the same plane as the bottom of the mounting groove 22 .

[0064] In some examples, the side of the recess 24 is connected to the top cover body 21 , and the thickness of the side of the recess 24 can be the same as the thickness of the bottom, so that the structural strength of the recess 24 can be guaranteed.

[0065] In some examples, a plurality of recesses 24 may be provided. For example, some recesses 24 may be spaced apart on one side of the top cover 20 along a length direction perpendicular to the mounting slot 22; another portion of recesses 24 may be spaced apart on the other side of the top cover 20 along a length direction perpendicular to the mounting slot 22.

[0066] In some embodiments, Figure 5As shown, the pressure strip 30 includes a bottom plate 31 and side plates 32 located on both sides of the bottom plate 31, and the first matching hole 301 is opened on the bottom plate 31, and the bottom plate 31 is parallel to the bottom of the installation groove 22. In this way, when the pressure strip 30 is placed in the installation groove 22, the first matching hole 301 and the first installation hole 201 can be smoothly aligned, so that the first connecting member 40 can be inserted into the first matching hole 301 and the first installation hole 201 in sequence and connected to the first structural beam 12. In addition, since the pressure strip 30 includes the bottom plate 31 and the side plates 32, it is conducive to improving the structural stability of the pressure strip 30, and avoiding the pressure strip 30 only including the sheet-like bottom plate 31 and being prone to bending and deformation during use.

[0067] In some examples, the side plate 32 is arranged to fit the side of the mounting groove 22. This allows for relatively large friction between the side plate 32 and the mounting groove 22, thereby helping to improve the limiting effect of the mounting groove 22 on the pressure strip 30, preventing it from sliding during the installation process of the first connector 40, thereby improving the installation efficiency of the battery box 100.

[0068] In some examples, a first angle is defined between the side plate 32 and the bottom plate 31 , and the first angle is greater than or equal to 90°, which can provide a larger space for the installation of the first connecting member 40 , thereby facilitating the installation of the first connecting member 40 .

[0069] In some examples, a second angle is formed between the side wall (the side surface of the side portion close to the groove body) and the bottom wall (the upper surface of the bottom) of the mounting groove 22, and the second angle is greater than or equal to 90°.

[0070] In some examples, the second angle is smaller than the first angle, and the difference between the second angle and the first angle is less than or equal to 2°. For example, the second angle is 120°, and the first angle is 121° or 122°.

[0071] This arrangement can smoothly insert the bead 30 into the mounting groove 22, and can prevent the bead 30 from being unable to move in the mounting groove 22 and affecting the installation of the first connector 40. In a specific implementation, after the bead 30 is inserted into the mounting groove 22, the end of the bead 30 can be lightly tapped to adjust the bead 30. In addition, the above arrangement is also conducive to improving the tightness of the connection between the bead 30 and the top cover 20, thereby improving the modality of the battery box.

[0072] In some embodiments, the frame 11 is connected to the top cover 20, the length of the pressure strip 30 is greater than the length of the mounting groove 22, and the bottom surface of the mounting groove 22 (i.e., the plane of the bottom of the mounting groove 22 facing away from the box body 10) is higher than or flush with the surface of the top cover 20 facing away from the frame 11. This helps to adjust the relative position of the pressure strip 30 in the mounting groove 22, and because the bottom surface of the mounting groove 22 is higher than or flush with the surface of the top cover 20 facing away from the frame 11, it can avoid the pressure strip 30 from colliding with the position where the top cover 20 connects to the frame 11 during the adjustment (i.e., movement) process, which is conducive to the smooth alignment between the first matching hole 301 and the first mounting hole 201.

[0073] In some examples, the material of the pressure strip 30 can be steel, such as DP590 steel, so that the pressure strip 30 can have good structural strength, thereby effectively bearing pressure on the first connecting member 40 and ensuring the connection stability of the first connecting member 40.

[0074] In some embodiments, Figure 4 and Figure 5 Combined with Figure 2 As shown, the top cover 20 further has a second mounting hole 202, and the pressure strip 30 further has a second matching hole 302. The battery box 100 further includes a second connecting member 50, which passes through the second mounting hole 202 and the second matching hole 302 and is connected to the frame 11.

[0075] In this case, at least one end of the pressure strip 30 extends to the position of the frame 11 .

[0076] By using the second connecting member 50 , the pressure strip 30 , the top cover 20 and the frame 11 can also be fixed, thereby ensuring better connection stability between the top cover 20 and the box body 10 .

[0077] In some examples, the second matching hole 302 and the first matching hole 301 are both disposed on the bottom plate of the pressure strip 30 , and the second mounting hole 202 and the first mounting hole 201 are located on the same horizontal plane, which is beneficial to the installation of the first connecting member 40 and the second connecting member 50 .

[0078] In some examples, the second connector 50 may be identical to the first connector 40 , which may improve their interchangeability and facilitate assembly of the battery box.

[0079] In some examples, multiple second mounting holes 202 can be provided, and the number of second matching holes 302 and the number of second connecting members 50 are consistent with the number of second mounting holes 202, so that the second connecting members 50 can pass through the second mounting holes 202 one by one and then be connected to the frame 11.

[0080] For example, the plurality of second mounting holes 202 can be distributed at both ends of the pressure strip 30. In this way, both ends of the pressure strip 30 extend to the corresponding positions of the frame 11, so that both ends of the pressure strip 30 are fixed on the frame 11, which is conducive to improving the connection stability between the top cover 20 and the box body 10.

[0081] In some examples, all the second mounting holes 202 may be disposed on the top cover body 21 .

[0082] In some embodiments, Figure 2 and Figure 4 As shown, the top cover 20 also has a plurality of third mounting holes 203 , and the plurality of third mounting holes 203 surround the middle area of ​​the top cover 20 . The battery box 100 also includes a plurality of third connecting members 60 , and each third connecting member 60 passes through a third mounting hole 203 and is connected to the frame 11 .

[0083] By using the third connecting member 60 , the top cover 20 and the frame 11 can be fixed, thereby ensuring a more stable connection between the top cover 20 and the box body 10 .

[0084] In some examples, all third mounting holes 203 may be disposed on the top cover body 21. Some mounting holes 203 are evenly arranged along a length direction parallel to the mounting slot 22, and another portion of mounting holes 203 are evenly arranged along a length direction perpendicular to the mounting slot 22.

[0085] In some examples, the second mounting hole 202 and part of the third mounting hole 203 are arranged side by side, that is, the second mounting hole 202 is located on a straight line where part of the third mounting hole 203 is located. This is conducive to improving the connection stability between the top cover 20 and the box body 10.

[0086] In some examples, all the third mounting holes 203 and the second mounting holes 202 are located in the same horizontal plane, which is convenient for installing the third connecting member 60 and the second connecting member 50 .

[0087] In some examples, the third connecting member 60 may be identical to the first connecting member 40 , which can improve the interchangeability of the two and facilitate the assembly of the battery box 100 .

[0088] In some embodiments, Figure 2 and Figure 3 As shown, the battery box 100 further includes a sealing member 70, which is located between the top cover 20 and the first structural beam 12. The sealing member 70 is provided with a through hole 701, and the first connecting member 40 also passes through the through hole 701. In this case, the first connecting member 40 passes through the first matching hole 301, the first mounting hole 201 and the through hole 701 in sequence, and is connected to the first structural beam 12.

[0089] This helps to ensure the airtightness between the top cover 20 and the first structural beam 12, and prevents the first mounting hole 201 on the top cover 20 from causing water to easily enter the battery box 100, thereby preventing the battery pack in the battery box 100 from being damaged by the water.

[0090] Exemplarily, the sealing member 70 may be waterproof foam.

[0091] In some examples, the seal 70 may include a plurality of sealing portions that are disconnected from each other and arranged side by side, each sealing portion being provided with one or more through holes 701, each through hole 701 corresponding to a first matching hole 301 and a first mounting hole 201. For example, Figure 3 As shown, seal 70 may include two sealing portions.

[0092] In some embodiments, Figure 3 As shown, the box body 10 also includes two second structural beams 13 parallel to each other, both ends of each second structural beam 13 are connected to the frame 11, and both ends of the first structural beam 12 are respectively connected to the two second structural beams 13; the first structural beam 12 and the two second structural beams 13 define two battery cell installation areas 102, and each battery cell installation area 102 is used to install a battery cell 91. Exemplarily, the second structural beam 13 and the first structural beam 12 are perpendicular to each other.

[0093] The second structural beam 13 can improve the structural stability of the box 10. In addition, since the first structural beam 12 and the second structural beam 13 jointly define the battery cell installation area 102, the area where the battery cells 91 are installed can be well divided, thereby improving the installation efficiency of the battery cells 91.

[0094] In some embodiments, Figure 3 As shown, at least one of the second structural beam 13 and the first structural beam 12 is provided with a first adhesive on a side facing the battery cell installation area 102 , and the first adhesive is configured to adhere to the battery cell adjacent thereto.

[0095] With this arrangement, the battery cell 91 and the adjacent structural beam (the second structural beam 13 or the first structural beam 12 ) can be bonded together using the first adhesive, thereby facilitating the stability of the battery cell 91 and improving the product mode.

[0096] For example, the second structural beam 13 is provided with a first adhesive on the side facing the battery cell installation area 102; or, the first structural beam 12 is provided with a first adhesive on the side facing the battery cell installation area 102; or, both the second structural beam 13 and the first structural beam 12 are provided with a first adhesive on the side facing the battery cell installation area 102.

[0097] In some examples, the first adhesive may be structural glue, or any other adhesive that has viscosity and can fix the battery cell 91 to the structural beam.

[0098] In some embodiments, Figure 3 As shown, the battery box 100 further includes at least one first fixing plate 81 , one end of the first fixing plate 81 is connected to the second structural beam 13 , and the other end of the first fixing plate 81 is connected to the first structural beam 12 .

[0099] Such a configuration can help improve the connection stability between the second structural beam 13 and the first structural beam 12 through the first fixing plate 81, thereby improving the structural strength of the box body 10 and further improving the strength of the battery box 100.

[0100] In some examples, the battery box 100 includes two first fixing plates 81. One end of the two first fixing plates 81 is respectively connected to the two second structural beams 13. In this way, the structural strength of the box body 10 can be further improved.

[0101] In some embodiments, Figure 6 As shown, the first fixing plate 81 includes a first fixing portion 811 and a second fixing portion 812 connected to each other, the first fixing portion 811 is parallel to the first structural beam 12 and connected to the first structural beam 12, and the second fixing portion 812 is parallel to the second structural beam 13 and connected to the second structural beam 13. In this way, there is a large overlapping area between the first fixing portion 811 and the first structural beam 12, and between the second fixing portion 812 and the second structural beam 13, which is conducive to improving the connection stability between the second structural beam 13 and the first structural beam 12.

[0102] In some examples, the first fixing portion 811 is connected to the middle position of the second fixing portion 812 . In this case, the first fixing plate 81 is in a “T” shape, which helps to further improve the connection stability between the second structural beam 13 and the first structural beam 12 .

[0103] In some examples, the first fixing portion 811 and the second fixing portion 812 may be integrally formed, thereby ensuring the structural stability of the first fixing plate 81 .

[0104] In some embodiments, Figure 3 As shown, the box body 10 also includes two middle beams 14, one end of each middle beam 14 is connected to the first structural beam 12, and the other end is connected to the frame 11, the two middle beams 14 are located on both sides of the first structural beam 12 and are arranged opposite to each other, and the two middle beams 14 are respectively parallel to the second structural beam 13.

[0105] With this arrangement, the structural stability of the box body 10 can be improved through the middle beam 14. In addition, the middle beam 14 can further divide the two battery cell installation areas into four battery cell installation areas, which is beneficial to the heat dissipation of the battery cells 91 in different battery cell installation areas.

[0106] In some embodiments, Figure 3 As shown, the battery box 100 further includes a second fixing plate 82, one end of the second fixing plate 82 is connected to the middle beam 14, and the other end of the second fixing plate 82 is connected to the first structural beam 12. In this way, the connection stability between the first structural beam 12 and the middle beam 14 can be enhanced by the second fixing plate 82, thereby improving the structural strength of the box body 10.

[0107] In some embodiments, Figure 7 As shown, the first structural beam 12 includes a first platform portion 121 and a second platform portion 122 connected to each other, and there is a height difference between a first platform surface 1211 of the first platform portion 121 close to the top cover 20 and a second platform surface 1221 of the second platform portion 122 close to the top cover 20. The first platform surface 1211 can be provided with a threaded hole for the first connecting member 40 to connect, so as to achieve the connection between the first connecting member 40 and the first structural beam 12. The second platform surface 1221 can be used to connect with the second fixing plate 82 and / or the first fixing plate 81. In this way, by layering and partitioning the platform surface of the first structural beam 12, it is helpful to avoid mutual interference between the fixing plates (the first fixing plate 81 or the second fixing plate 82) and the first connecting member 40 during the installation process.

[0108] In some examples, such as Figure 7 As shown, a notch 1210 is provided in the middle of the first platform portion 121, one end of the second fixing plate 82 is fixed to the second platform surface 1221 of the first structural beam 12, and the other end of the second fixing plate 82 can pass through the notch 1210 and be connected to the middle beam 14. The notch 1210 can be used to reduce the height of the middle of the first platform portion 121, so as to facilitate the installation of the second fixing plate 82 to strengthen the connection between the first structural beam 12 and the middle beam 14.

[0109] In some embodiments, Figure 8 As shown, the second fixing plate 82 includes a first connecting portion 821, a transition portion 822 and a second connecting portion 823 connected in sequence, and the first connecting portion 821 and the second connecting portion 823 are located in different planes. The first connecting portion 821 passes through the notch 1210 and is connected to the middle beam 14, and the second connecting portion 823 is connected to the second platform surface 1221.

[0110] In some examples, such as Figure 3 and Figure 8As shown, the first connection part 821 is parallel to the middle beam 14, and the second connection part 823 is parallel to the first structural beam 12. With this arrangement, there are respectively large overlapping areas between the first connection part 821 and the middle beam 14 and between the second connection part 823 and the first structural beam 12, which is beneficial to improving the connection stability between the middle beam 14 and the first structural beam 12.

[0111] Exemplarily, the first connection portion 821 and the transition portion 822 are located on the same straight line, and the transition portion 822 is connected to the middle position of the second connection portion 823. In this way, the second fixed plate 82 is in a "T" shape as a whole when viewed from above, which is beneficial to further improve the connection stability between the middle beam 14 and the first structural beam 12.

[0112] Exemplarily, the first connection portion 821 , the transition portion 822 , and the second connection portion 823 may be integrally formed.

[0113] In some examples, such as Figure 3 and Figure 8 As shown, the first fixing portion 811 of the first fixing plate 81 is connected to the second platform surface 1221 of the first structural beam 12 .

[0114] Some embodiments of the present application also provide a battery pack, such as Figure 1 As shown, the battery pack 200 includes the battery box 100 described in any of the above embodiments and the battery cells located in the battery box 100 .

[0115] Since the battery pack includes the battery box 100 , the battery pack has the technical effects possessed by the above-mentioned battery box 100 , which will not be described in detail here.

[0116] In some examples, such as Figure 3 As shown, the battery box 100 has multiple battery cell installation areas, multiple battery cells 91 located in the same battery cell installation area constitute a battery pack 90, and multiple battery packs 90 are distributed in different battery cell installation areas.

[0117] In some examples, the battery pack 200 further includes a second adhesive, and the multiple battery cells 91 in each battery pack 90 are bonded by the second adhesive. This can ensure the connection stability between the battery cells 91 in the battery pack 91, thereby improving the product mode. Exemplarily, the second adhesive can be a structural adhesive.

[0118] The above is a detailed introduction to the embodiments of the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for technicians in this field, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A battery box, characterized in that: include: The box body comprises a frame and a first structural beam, wherein the frame encloses a receiving space, and the first structural beam is located in the receiving space and connected to the frame; A top cover, which is arranged above the accommodation space and has a first mounting hole; A pressure strip, disposed on a side of the top cover away from the box body, the pressure strip having a first matching hole; and A first connecting member passes through the first mounting hole and the first matching hole and is connected to the first structural beam.

2. The battery box according to claim 1, characterized in that: The top cover comprises a mounting groove, and the pressure strip is arranged in the mounting groove.

3. The battery box according to claim 2, characterized in that: The frame is connected to the top cover, the length of the pressure strip is greater than the length of the mounting groove, and the bottom surface of the mounting groove is higher than or flush with the surface of the top cover on a side away from the frame.

4. The battery box according to claim 2, characterized in that: The top cover further comprises a top cover body adjacent to the mounting groove, and a thickness of the top cover body is equal to a thickness of a bottom of the mounting groove; and / or The top cover further comprises a top cover body and a protrusion adjacent to the top cover body, wherein the thickness of the top cover body is equal to the thickness of the top of the protrusion.

5. The battery box according to claim 2, characterized in that: The pressure strip includes a bottom plate and side plates located on both sides of the bottom plate, the first matching hole is opened on the bottom plate, and the side plates are arranged to fit the side portions of the installation groove.

6. The battery box according to claim 5, characterized in that: The included angle between the side plate and the bottom plate is greater than or equal to 90°.

7. The battery box according to any one of claims 1 to 6, characterized in that: The top cover also has a second mounting hole, the pressure strip also has a second matching hole, and the battery box also includes a second connecting member, which passes through the second mounting hole and the second matching hole and is connected to the frame.

8. The battery box according to any one of claims 1 to 6, characterized in that: It also includes a sealing member, which is located between the top cover and the first structural beam. The sealing member is provided with a through hole, and the first connecting member also passes through the through hole.

9. The battery box according to any one of claims 1 to 6, characterized in that: The box body also includes two second structural beams parallel to each other, both ends of the second structural beams are connected to the frame, and both ends of the first structural beam are respectively connected to the two second structural beams; the first structural beam and the two second structural beams define two battery cell installation areas.

10. The battery box according to claim 9, characterized in that: At least one of the second structural beam and the first structural beam is provided with a first adhesive on a side facing the battery cell installation area, and the first adhesive is configured to be bonded to the battery cell adjacent thereto.

11. The battery box according to claim 9, characterized in that: It also includes at least one first fixing plate, one end of the first fixing plate is connected to the second structural beam, and the other end of the first fixing plate is connected to the first structural beam.

12. The battery box according to claim 11, characterized in that: The first fixing plate includes a first fixing portion and a second fixing portion connected to each other, the first fixing portion is parallel to the first structural beam and connected to the first structural beam, the second fixing portion is parallel to the second structural beam and connected to the second structural beam, and the first fixing portion is connected to the middle position of the second fixing portion.

13. The battery box according to claim 9, characterized in that: The box body further includes two middle beams, one end of each of the middle beams is connected to the first structural beam, and the other end is connected to the frame; the two middle beams are arranged opposite to each other and are respectively parallel to the second structural beam.

14. The battery box according to claim 13, characterized in that: It also includes a second fixing plate, one end of which is connected to the middle beam, and the other end of which is connected to the first structural beam.

15. The battery box according to claim 14, characterized in that: The first structural beam includes a first platform portion and a second platform portion that are connected to each other, a first platform surface of the first platform portion close to the top cover side and a second platform surface of the second platform portion close to the top cover side have a height difference, a notch is opened in the middle position of the first platform portion, one end of the second fixing plate passes through the notch and is connected to the middle beam.

16. The battery box according to claim 15, characterized in that: The second fixing plate includes a first connecting portion, a transition portion, and a second connecting portion which are connected in sequence, the first connecting portion and the transition portion are located on the same straight line, and the transition portion is connected to the middle position of the second connecting portion, and the first connecting portion passes through the notch and is connected to the middle beam.

17. A battery pack, characterized in that: include: A battery box as claimed in any one of claims 1 to 16.

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