Battery box body, battery pack and vehicle

Abstract

The utility model relates to a battery box body, a battery pack and a vehicle, a bottom plate and a frame body of a tray define an accommodating groove for mounting a battery cell, a protection assembly comprises a first reinforcing plate, a second reinforcing plate and a buffer plate which are arranged at the bottom of the accommodating groove, and the first reinforcing plate and the second reinforcing plate are arranged at an interval; the buffer plate is located between the first reinforcing plate and the second reinforcing plate. Wherein the first reinforcing plate and the second reinforcing plate can enhance the impact resistance of the bottom plate of the battery box body, and the buffer plate can buffer the impact on the bottom plate of the battery box body, so that the influence of the impact on electric parts in the battery box body is reduced. The first reinforcing plate, the second reinforcing plate and the buffer plate act together, so that the impact resistance of the bottom of the battery box can be improved, and the battery box body can better protect electric devices in the accommodating groove of the battery box body.

Description

Technical Field

[0001] The present disclosure relates to the field of battery technology, and in particular, to a battery box, a battery pack and a vehicle. Background Art

[0002] Electric vehicles use battery packs to provide power. The battery packs of electric vehicles are usually installed on the chassis of the vehicle, and the bottom of the battery box of the battery pack is usually exposed under the vehicle. During the driving of the vehicle, the bottom of the battery box is easily hit by foreign objects. When the impact resistance of the bottom of the battery box is weak, the impact of foreign objects may damage the electrical components in the battery box, affecting the normal use of the battery pack. Utility Model Content

[0003] The purpose of the present disclosure is to provide a battery case, a battery pack and a vehicle, wherein the bottom of the battery case has a strong impact resistance and can improve the protection of electrical components in the battery case.

[0004] In order to achieve the above-mentioned object, the present disclosure provides a battery box in a first aspect, comprising:

[0005] A tray, comprising a frame and a bottom plate connected to the bottom of the frame, wherein the bottom plate and the frame form a receiving groove for installing a battery cell; and

[0006] The protection component includes a first reinforcing plate, a second reinforcing plate and a buffer plate arranged at the bottom of the accommodating groove, the first reinforcing plate and the second reinforcing plate are arranged at intervals, and the buffer plate is located between the first reinforcing plate and the second reinforcing plate.

[0007] Optionally, the first reinforcing plate and the second reinforcing plate are arranged at intervals along a first direction and extend along a second direction perpendicular to the first direction;

[0008] There are two first reinforcing plates, and the two first reinforcing plates are respectively arranged at positions where the receiving slot is close to the frame in the first direction;

[0009] The second reinforcing plate is located between the two first reinforcing plates.

[0010] Optionally, the second reinforcing plate is arranged corresponding to the axis of symmetry of the accommodating groove in the first direction.

[0011] Optionally, there is a gap between the first reinforcing plate and / or the second reinforcing plate and the bottom plate.

[0012] Optionally, the first reinforcing plate and / or the second reinforcing plate are fixedly connected to the frame.

[0013] Optionally, the battery box further comprises a cold plate for cooling the battery cell, the cold plate is arranged at the bottom of the receiving tank, and the protective assembly is located between the bottom plate and the cold plate;

[0014] The first reinforcing plate includes a first connecting portion for connecting to the flat plate portion of the cold plate and a second connecting portion connected to the flow channel portion of the cold plate, wherein the plane where the second connecting portion is located is closer to the bottom plate;

[0015] A rounded transition is adopted at the junction between the first connection portion and the second connection portion.

[0016] Optionally, the first reinforcing plate and / or the second reinforcing plate is configured as a hollow structure.

[0017] Optionally, there is a gap between the buffer plate and the first reinforcing plate and between the buffer plate and the second reinforcing plate in the first direction.

[0018] Optionally, the buffer plate is constructed as a microporous foamed polypropylene plate; and / or

[0019] The first reinforcement plate and / or the second reinforcement plate are configured as aluminum alloy plates.

[0020] Optionally, the base plate includes a main body and an edge portion, the edge portion is connected to the bottom of the frame through a first connecting member, and the main body is recessed in a direction away from the accommodating groove, so that the distance from the bottom surface of the main body away from the accommodating groove to the bottom of the frame is greater than the distance from one end of the first connecting member away from the frame to the bottom of the frame.

[0021] Optionally, the battery case includes a second connecting member, the frame includes a frame for enclosing the receiving slot with the bottom plate, the battery case includes an intermediate beam arranged in the receiving slot and connected to the frame, the main body is provided with a groove recessed toward the receiving slot, a mounting hole is provided in the groove, the second connecting member is connected to the intermediate beam through the mounting hole, and the second connecting member located on the side of the main body away from the receiving slot is in the groove.

[0022] Optionally, a positioning hole is provided on the buffer plate, and a positioning boss protruding toward the accommodating groove is formed at the groove of the main body, and the positioning hole is sleeved on the positioning boss for installation and positioning of the buffer plate.

[0023] Optionally, the main body of the bottom plate is provided with reinforcing ribs, and / or

[0024] The main body of the bottom plate is provided with a reinforcing boss; and / or

[0025] The joints of two adjacent edge portions of the bottom plate are configured as rounded corners.

[0026] A second aspect of the present disclosure provides a battery pack, comprising a battery cell and the battery case provided by the first aspect of the present disclosure, wherein the battery cell is disposed in the receiving groove.

[0027] Optionally, the orthographic projections of two ends of the battery cell at the bottom of the receiving groove are located in an area covered by the first reinforcing plate and / or the second reinforcing plate.

[0028] A third aspect of the present disclosure provides a vehicle, comprising the battery pack provided by the second aspect of the present disclosure.

[0029] Through the above technical solution, the bottom plate and the frame of the tray form a receiving groove for installing the battery cell, and the protective component includes a first reinforcing plate, a second reinforcing plate and a buffer plate arranged at the bottom of the receiving groove, the first reinforcing plate and the second reinforcing plate are arranged at intervals, and the buffer plate is located between the first reinforcing plate and the second reinforcing plate. Among them, the first reinforcing plate and the second reinforcing plate can enhance the impact resistance of the bottom plate of the battery box, and the setting of the buffer plate can buffer the impact on the bottom plate of the battery box, reducing the impact of the impact on the electrical components in the battery box. The first reinforcing plate, the second reinforcing plate and the buffer plate work together to improve the impact resistance of the bottom of the battery box, so that the battery box can better protect the electrical components in the receiving groove of the battery box.

[0030] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0032] Figure 1 is a schematic structural diagram of a tray and a protective assembly in a battery box disclosed in an exemplary embodiment of the present disclosure;

[0033] Figure 2 is an exploded view of an electrical box body and a protective assembly provided in an exemplary embodiment of the present disclosure;

[0034] Figure 3 is a structural diagram of a tray and a protective assembly provided in an exemplary embodiment of the present disclosure from another perspective; wherein the bottom plate is not shown;

[0035] Figure 4 is a structural diagram of a tray and a protection assembly provided in an exemplary embodiment of the present disclosure from another perspective;

[0036] Figure 5is provided in an exemplary embodiment of the present disclosure Figure 4 Middle AA section view;

[0037] Figure 6 is provided in an exemplary embodiment of the present disclosure Figure 5 A magnified detail of middle B;

[0038] Figure 7 is provided in an exemplary embodiment of the present disclosure Figure 6 A magnified detail of middle C;

[0039] Figure 8 is a schematic structural diagram of a base plate provided in an exemplary embodiment of the present disclosure;

[0040] Fig. 9 The bottom plate provided in the exemplary embodiment of the present disclosure is different from Figure 8 Structural steel schematic from perspective;

[0041] Fig.10 is a schematic structural diagram of a first reinforcing plate provided in an exemplary embodiment of the present disclosure.

[0042] Description of Reference Numerals

[0043] 10-tray; 11-frame; 111-frame; 112-middle beam; 12-bottom plate; 121-main body; 122-edge; 12a-groove; 12b-positioning boss; 12c-reinforcement rib; 20-accommodation groove; 30-protection assembly; 31-first reinforcement plate; 311-first connecting portion; 312-second connecting portion; 32-second reinforcement plate; 33-buffer plate; 40-first bolt; 50-cold plate; 60-mounting hole; 70-positioning hole; 80-second connecting piece; 81-lifting screw sleeve; 82-second bolt. DETAILED DESCRIPTION

[0044] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0045] In the present disclosure, an XYZ coordinate system is established for the tray and protective assembly of the battery box, wherein the X direction is the first direction, the Y direction is the second direction, and the Z direction is the third direction. The first direction, the second direction, and the third direction are perpendicular to each other. Unless otherwise specified, the orientation words used, such as "upper and lower", usually indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present disclosure. "Inside and outside" refers to the inside and outside of the outline of the component or structure itself. "First, second" and the like are used to distinguish one element from another, and do not have sequentiality or importance.

[0046] The first aspect of the present disclosure provides a battery box, such as Figures 1 to 10 As shown, it includes a tray 10 and a protective assembly 30. The tray 10 includes a frame 11 and a bottom plate 12 connected to the bottom of the frame 11, and the bottom plate 12 and the frame 11 form a receiving groove 20 for installing the battery cell. The protective assembly 30 is arranged in the receiving groove 20, and the protective assembly 30 includes a first reinforcing plate 31, a second reinforcing plate 32 and a buffer plate 33 arranged at the bottom of the receiving groove 20, the first reinforcing plate 31 and the second reinforcing plate 32 are arranged at intervals, and the buffer plate 33 is located between the first reinforcing plate 31 and the second reinforcing plate 32.

[0047] In the above-mentioned embodiment, the first reinforcing plate 31, the second reinforcing plate 32 and the buffer plate 33 are all arranged at the bottom of the receiving groove 20. In particular, when the bottom of the battery box body or the bottom plate 12 of the tray 10 is hit during the driving of the vehicle, the first reinforcing plate 31 and the second reinforcing plate 32 are arranged in the receiving groove 20 of the tray 10 to improve the impact resistance of the bottom plate 12, so as to prevent the bottom plate 12 from being damaged and affecting the electrical components in the battery box. The setting of the buffer plate 33 can transfer the impact buffer of the bottom plate 12 to the receiving groove 20, so as to prevent the electrical components in the receiving groove 20 of the battery box from being strongly impacted. By setting the first reinforcing plate 31, the second reinforcing plate 32 and the buffer plate 33, the protection ability of the battery box body to the electrical components in the receiving groove 20 can be improved when the bottom plate 12 is hit, so as to ensure the normal operation of the battery pack.

[0048] It should be noted that the electrical components may include battery cells, connecting wires, circuit boards and various other electronic components arranged in the receiving slots 20 of the battery box. The battery box may also include an upper cover that is buckled on the tray, which will not be described in detail here.

[0049] In some embodiments, Figure 2 and Figure 3As shown, the first reinforcing plate 31 and the second reinforcing plate 32 are arranged at intervals along the first direction and extend along the second direction perpendicular to the first direction. There are two first reinforcing plates 31, and the two first reinforcing plates 31 are respectively arranged at positions of the receiving slot 20 close to the frame 11 in the first direction, and the second reinforcing plate 32 is located between the two first reinforcing plates 31. Further, the second reinforcing plate 32 can be arranged corresponding to the symmetric axis of the receiving slot 20 in the first direction.

[0050] In the above-mentioned embodiment, the first direction may be the width direction of the tray 10, and the second direction may be the length direction of the tray 10. The two ends of the battery cells arranged in the tray 10 generally correspond to the area of ​​the receiving slot 20 close to the frame in the first direction and / or the area of ​​the receiving slot 20 close to the symmetry axis of the receiving slot 20 in the first direction. Therefore, by arranging the above-mentioned first reinforcing plate 31 and the second reinforcing plate 32, the first reinforcing plate 31 and the second reinforcing plate 32 can at least protect the areas of the two ends of the battery cells arranged in the tray 10.

[0051] In addition, in other possible embodiments, a plurality of second reinforcing plates 32 located in the receiving groove 20 are arranged between the two first reinforcing plates 31 along the first direction to further improve the impact resistance of the battery box bottom plate 12. It should be understood that the first reinforcing plates 31 can also be arranged at other positions according to actual needs, and the number of the first reinforcing plates 31 can also be adjusted according to actual needs, which will not be described in detail here.

[0052] In some embodiments, Figure 2 and Figure 3 As shown, the first reinforcing plate 31 and / or the second reinforcing plate 32 are fixedly connected to the frame 11 .

[0053] It should be understood that the bottom plate 12 of the tray 10 is generally a plate-like structure. The first reinforcing plate 31 and the second reinforcing plate 32 are extended along the second direction and fixedly connected to the frame 11, which can further support the bottom plate 12 when the bottom plate 12 is collided, thereby further improving the impact resistance of the bottom plate 12.

[0054] In some embodiments, the battery case further includes a cold plate 50 for cooling the battery cell, the cold plate 50 is disposed at the bottom of the receiving tank 20, and the protective assembly 30 is located between the bottom plate 12 and the cold plate 50. In this way, the cold plate 50 is also protected by the protective assembly 30, and the functions of the buffer plate 33, the first reinforcing plate 31, and the second reinforcing plate 32 in the protective assembly 30 have been described in the above content and will not be repeated here.

[0055] In the above-mentioned embodiment, the buffer plate 33 of the protection component 30 can be adhered to the bottom plate 12. When the bottom plate 12 is assembled to the frame 11, the buffer plate 33 can be assembled together, which is convenient and quick to operate.

[0056] The buffer plate 33 and the bottom plate 12 may be bonded together in any appropriate manner, such as by double-sided adhesive tape.

[0057] In addition, the thickness of the buffer plate 33 between the cold plate 50 and the bottom plate 12 may be greater than the thickness of the first reinforcing plate 31 itself, and the thickness of the buffer plate 33 may be greater than the thickness of the second reinforcing plate 32. There may be a gap between the bottom plate 12 and the first reinforcing plate 31 and the second reinforcing plate 32, so that when the bottom plate 12 is hit, the buffer plate 33 first provides partial buffering, and then the reinforcing plate provides support and reinforcement, so as to improve the protection ability of the battery box to the electrical devices in the receiving slot 20 of the battery box.

[0058] In some embodiments, Figures 5 to 7 As shown, the first reinforcing plate 31 includes a first connection portion 311 for connecting to the flat plate portion of the cold plate 50 and a second connection portion 312 connected to the flow channel portion of the cold plate 50, wherein the plane where the second connection portion 312 is located is closer to the bottom plate 12. The joint between the first connection portion 311 and the second connection portion 312 adopts a rounded transition.

[0059] In the above-mentioned embodiment, the flat plate portion of the cold plate 50 is an area on the cold plate 50 where no flow channel is provided, and is usually located in an area near the edge of the cold plate 50. The flow channel portion of the cold plate 50 is an area on the cold plate 50 where the flow channel is provided, and the flow channel wall of the flow channel portion is usually protruding compared to the flat plate portion. The area where the flow channel portion is located is usually closer to the middle part of the cold plate 50 than the area where the flat plate portion is located. The first connection portion 311 of the first reinforcing plate 31 provided on both sides of the accommodating groove 20 in the first direction connects the flat plate portion of the cold plate 50, and the second connection portion 312 connects the flow channel portion of the cold plate 50. The cold plate 50 and the first reinforcing plate 31 are usually bonded by glue, and a glue layer needs to be laid between the first reinforcing plate 31 and the cold plate 50 for bonding the cold plate 50 and the first reinforcing plate 31. In order to ensure the bonding quality between the first reinforcing plate 31 and the cold plate 50, the thickness of the glue layer in the bonding area between the cold plate 50 and the first reinforcing plate 31 is usually required to be uniform. However, the flow channel of the flow channel portion of the cold plate 50 protrudes outward relative to the flat plate portion of the cold plate 50. Therefore, the plane where the second connection portion 312 connected to the flow channel portion is located is closer to the bottom plate 12, which can make the thickness of the glue layer between the second connection portion 312 of the first reinforcing plate 31 and the flow channel portion of the cold plate 50 and the thickness of the glue layer between the first connection portion 311 and the flat plate portion of the cold plate 50 more uniform, so as to ensure the bonding quality between the cold plate 50 and the first reinforcing plate 31, so as to prevent the bonding between the first reinforcing plate 31 and the cold plate 50 from being damaged when the first reinforcing plate 31 is impacted due to the weak bonding between the first reinforcing plate 31 and the cold plate 50. So as to avoid the first reinforcing plate 31 from slapping the cold plate 50 when the vibration of the first reinforcing plate 31 causes damage to the cold plate 50 after the bonding between the first reinforcing plate 31 and the cold plate 50 is damaged.

[0060] In addition, if Figures 5 to 7 as well as Fig.10 As shown, the joint of the first connection part 311 and the second connection part 312 adopts a rounded transition, which can avoid stress concentration at the joint between the first connection part 311 and the second connection part 312 and improve the structural strength of the first reinforcing plate 31. The specific angle of the rounded corner can be set according to actual needs and will not be repeated here.

[0061] In some embodiments, in order to reduce the weight of the battery box, the first reinforcing plate 31 and / or the second reinforcing plate 32 may be configured as a hollow structure.

[0062] In some embodiments, Figure 3 As shown, there is a gap in the first direction between the buffer plate 33 and the first reinforcing plate 31 and between the buffer plate 33 and the second reinforcing plate 32. On the one hand, it is convenient to install the buffer plate 33. On the other hand, when the bottom plate 12 is impacted, the buffer plate 33 is clamped by the bottom plate 12 and the device (such as the cold plate 50) disposed in the receiving groove 20, and the buffer plate 33 will deform. The gap between the buffer plate 33 and the first reinforcing plate 31 in the first direction and the gap between the buffer plate 33 and the second reinforcing plate 32 in the first direction can provide an escape space for the deformation of the buffer plate 33.

[0063] In addition, a gap may be reserved between the buffer plate 33 and the frame 111 of the battery tray 10 to serve as an escape space, which will not be described in detail here.

[0064] The buffer plate 33 can be constructed as a microporous foamed polypropylene plate (MPP plate) or rubber; or a honeycomb plate, etc. The first reinforcing plate 31 and the second reinforcing plate 32 can be made of aluminum alloy, and of course can also be made of other materials that meet the requirements, which will not be repeated here.

[0065] In some embodiments, Figure 2 , Figure 8 as well as Fig. 9 As shown, the bottom plate 12 includes a main body 121 and an edge portion 122, the edge portion 122 is connected to the bottom of the frame 11 through a first connecting member, and the main body 121 is recessed in a direction away from the receiving groove 20, so that the distance from the bottom surface of the main body 121 away from the receiving groove 20 to the bottom of the frame 11 is greater than the distance from the end of the first connecting member away from the frame 11 to the bottom of the frame 11. So that the main body 121 recessed in a direction away from the receiving groove 20 can protect the first connecting member arranged at the edge portion 122, so as to prevent the first connecting member from being scratched when the bottom plate 12 of the battery box is hit, so as to avoid the first connecting member from being scratched and damaged, thereby destroying the stability of the connection between the bottom plate 12 and the frame 11. It should be noted that the bottom of the frame 11 mentioned above refers to the bottom surface where the frame 111 is connected to the edge portion 122 of the bottom plate 12. The first connecting member can be configured as a first bolt 40.

[0066] In some embodiments, the battery case also includes a second connecting member 80, the frame 11 includes a frame 111 which is enclosed with the bottom plate 12 to form a receiving groove 20, the battery case also includes a middle beam 112 arranged in the receiving groove 20 and connected to the frame 111, the main body 121 is provided with a groove 12a which is recessed toward the receiving groove 20, and a mounting hole 60 is opened in the groove 12a. The second connecting member 80 is connected to the middle beam 112 through the mounting hole 60, and the second connecting member 80 located on the side of the main body 121 away from the receiving groove 20 is in the groove 12a to protect the second connecting member 80 to prevent the second connecting member 80 from being scratched when the bottom plate 12 is collided, causing the second connecting member 80 to loosen, thereby affecting the connection quality of the second connecting member 80.

[0067] In some embodiments, the second connecting member 80 can be configured as a lifting screw sleeve 81 and a second bolt 82. The lifting screw sleeve 81 passes through the mounting hole 60 to connect the bottom plate 12 to the middle beam 112 of the frame 11. The second bolt 82 passes through the lifting screw sleeve 81 to connect the lifting screw sleeve 81 to the bottom plate of the frame or the vehicle. The setting of the groove 12a can protect the lifting screw sleeve 81 and the vehicle-end mounting bolt to avoid the lifting screw sleeve 81 from being scratched when the bottom plate 12 of the tray 10 is hit, causing the lifting screw sleeve 81 to loosen. For example, in one of the solutions of the CTC (Cell To Pack) battery chassis, the lifting screw sleeve 81 passes through the mounting hole 60 of the bottom plate 12 to connect the bottom plate 12 to the middle beam 112 of the battery box, the second bolt 82 is arranged in the lifting screw sleeve 81 and connected to the lifting screw sleeve 81, and the second bolt 82 also passes through the middle beam 112 to be connected to the bottom plate of the vehicle. The connection strength of the second bolt 82 fixed to the vehicle floor is very important. If the bolt head is exposed outside the groove 12a of the floor 12, it is easy to cause the connection between the second bolt 82 and the floor of the vehicle to fail and fall off due to impact. Therefore, the provision of the groove 12a can protect the second bolt 82 and the lifting screw sleeve 81, and prevent the second bolt 82 and the lifting screw sleeve 81 from falling off due to impact.

[0068] In addition, in other embodiments, the second connecting member 80 may be configured as a lifting screw 81. The lifting screw 81 passes through the mounting hole 60 and is used to connect the bottom plate 12 to the middle beam 112 of the frame 11. The provision of the groove 12a can protect the lifting screw 81 to prevent the lifting screw 81 from being scratched when the bottom plate 12 of the pallet 10 is hit, thereby preventing the lifting screw 81 from loosening.

[0069] In some embodiments, Figure 2 , Figure 3 as well as Figure 8As shown, a positioning hole 70 is provided on the buffer plate 33, and a positioning boss 12b protruding toward the accommodating groove 20 is formed at the groove 12a of the main body 121. The positioning hole 70 is sleeved on the positioning boss 12b for positioning the buffer plate 33 during installation.

[0070] In the above-mentioned embodiment, the positioning hole 70 of the buffer plate 33 cooperates with the positioning boss 12b on the main body 121 of the bottom plate 12, and also has a certain limiting effect, which can limit the movement of the buffer plate 33 on the main body 121 relative to the main body 121, and the above-mentioned buffer plate 33 is bonded to the bottom plate 12 to fix and limit the buffer plate 33 together, which can prevent the buffer plate 33 from sliding when it is impacted by the bottom plate 12, so as to improve the buffering effect of the buffer plate 33 and better protect the electrical components in the accommodating groove 20.

[0071] In some embodiments, in order to make the bottom plate 12 itself have a higher structural strength, a reinforcing rib 12c may be provided on the main body 121 of the bottom plate 12; and / or a reinforcing boss may be provided on the main body 121 of the bottom plate 12; and / or the junction of two adjacent edge portions 122 of the bottom plate 12 may be configured as a rounded corner. Among them, the provision of reinforcing ribs 12c and / or reinforcing bosses on the main body 121 can improve the structural strength of the bottom plate 12; the configuration of the junction of two adjacent edge portions 122 of the bottom plate 12 as a rounded corner can prevent stress concentration, which also means that the structural strength of the bottom plate 12 is improved, which will not be repeated here. Figure 2 , Figure 8 as well as Fig. 9 As shown, a reinforcing rib 12c may be provided on the main body 121 of the bottom plate 12, and the joint between two adjacent edge portions 122 of the bottom plate 12 is configured as a rounded corner.

[0072] The second aspect of the present disclosure provides a battery pack, including a battery cell and the battery box provided by the first aspect of the present disclosure, wherein the battery cell is disposed in a receiving groove 20, and the orthographic projections of the two ends of the battery cell at the bottom of the receiving groove 20 are located in the area covered by the first reinforcing plate 31 and / or the second reinforcing plate 32. Usually, the two ends of the battery cell are electrodes of the battery cell, and various electronic components such as connecting pieces, wiring harnesses or bus bars are usually arranged at the electrodes of the battery cell. The orthographic projections of the two ends of the battery cell at the bottom of the receiving groove 20 are located in the area covered by the first reinforcing plate 31 or the second reinforcing plate 32, which can enhance the protection of the two ends of the battery cell, so as to have a better protection effect on the two ends of the battery cell.

[0073] In the third aspect of the present disclosure, a vehicle is provided, comprising the battery box provided in the first aspect of the present disclosure; or comprising the battery pack provided in the second aspect of the present disclosure. The vehicle may be a new energy electric vehicle, or other vehicles suitable for the battery box mentioned in the first aspect of the present disclosure or the battery pack provided in the second aspect of the present disclosure.

[0074] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0075] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0076] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A battery box, characterized in that: include: A tray, comprising a frame and a bottom plate connected to the bottom of the frame, wherein the bottom plate and the frame form a receiving groove for installing a battery cell; as well as The protection component includes a first reinforcing plate, a second reinforcing plate and a buffer plate arranged at the bottom of the accommodating groove; the first reinforcing plate and the second reinforcing plate are arranged at intervals, and the buffer plate is located between the first reinforcing plate and the second reinforcing plate.

2. The battery box according to claim 1, characterized in that: The first reinforcing plate and the second reinforcing plate are arranged at intervals along a first direction and extend along a second direction perpendicular to the first direction; There are two first reinforcing plates, and the two first reinforcing plates are respectively arranged at positions where the receiving slot is close to the frame in the first direction; The second reinforcing plate is located between the two first reinforcing plates.

3. The battery box according to claim 2, characterized in that: The second reinforcing plate is arranged corresponding to the symmetry axis of the receiving groove in the first direction.

4. The battery box according to claim 1, characterized in that: There is a gap between the first reinforcing plate and / or the second reinforcing plate and the bottom plate.

5. The battery box according to claim 1, characterized in that: The first reinforcing plate and / or the second reinforcing plate are fixedly connected to the frame.

6. The battery case according to any one of claims 1 to 5, characterized in that: The battery box also includes a cold plate for cooling the battery cell, the cold plate is arranged at the bottom of the receiving tank, and the protective component is located between the bottom plate and the cold plate; The first reinforcing plate includes a first connecting portion for connecting to the flat plate portion of the cold plate and a second connecting portion connected to the flow channel portion of the cold plate, wherein the plane where the second connecting portion is located is closer to the bottom plate; A rounded transition is adopted at the junction between the first connection portion and the second connection portion.

7. The battery case according to any one of claims 1 to 5, characterized in that: The first reinforcing plate and / or the second reinforcing plate are configured as a hollow structure.

8. The battery box according to claim 2, characterized in that: There is a gap between the buffer plate and the first reinforcing plate and between the buffer plate and the second reinforcing plate in the first direction.

9. The battery box according to claim 1, characterized in that: The buffer plate is constructed of a microporous foamed polypropylene plate; and / or The first reinforcement plate and / or the second reinforcement plate are configured as aluminum alloy plates.

10. The battery box according to claim 1, characterized in that: The bottom plate includes a main body and an edge portion, the edge portion is connected to the bottom of the frame through a first connecting member, and the main body is recessed in a direction away from the receiving groove, so that the distance from the bottom surface of the main body away from the receiving groove to the bottom of the frame is greater than the distance from the end of the first connecting member away from the frame to the bottom of the frame.

11. The battery case according to claim 10, characterized in that: The battery case includes a second connecting member, the frame includes a frame for enclosing the receiving slot with the bottom plate, the battery case also includes an intermediate beam arranged in the receiving slot and connected to the frame, the main body is provided with a groove recessed toward the receiving slot, a mounting hole is provided in the groove, the second connecting member is connected to the intermediate beam through the mounting hole, and the second connecting member located on the side of the main body away from the receiving slot is in the groove.

12. The battery case according to claim 11, characterized in that: The buffer plate is provided with a positioning hole, the groove of the main body forms a positioning boss protruding toward the accommodating groove, and the positioning hole is sleeved on the positioning boss for installation and positioning of the buffer plate.

13. The battery case according to claim 10, characterized in that: The main body of the bottom plate is provided with reinforcing ribs, and / or The main body of the bottom plate is provided with a reinforcing boss; and / or The joints of two adjacent edge portions of the bottom plate are configured as rounded corners.

14. A battery pack, characterized in that: It comprises a battery cell and a battery case as described in any one of claims 1 to 13, wherein the battery cell is arranged in the receiving groove.

15. The battery pack according to claim 14, characterized in that: The orthographic projections of the two ends of the battery cell on the bottom of the receiving groove are located in the area covered by the first reinforcing plate and / or the second reinforcing plate.

16. A vehicle, characterized in that: Comprising the battery pack according to claim 14 or 15.

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