Battery box and electric vehicle

Abstract

The present application discloses a battery box and an electric vehicle, wherein the battery box comprises: a box shell, a longitudinal support beam, a plurality of support plates, a plurality of battery modules, a condensation duct assembly and a cover. The box shell has a cavity and an opening connected to the cavity. The longitudinal support beam is arranged in the cavity, and the longitudinal support beam is located on one side of the opening, and the two ends of the longitudinal support beam are respectively connected to the inner wall of the box shell. Each support plate is arranged in the cavity. The condensation duct assembly is arranged in the cavity, and the condensation duct assembly connects the battery modules in series. The cover is connected to the box shell, and the cover is used to close or open the opening. The cables and the condensation duct assembly are both limited to the support plate at multiple different locations. The battery box of the present application is provided with a longitudinal support beam on the inner wall of the box shell on one side of the opening, and the two ends of the longitudinal support beam are respectively supported on the inner wall of the box shell, which supports the box shell, prevents the box shell from bending and deforming due to the excessive weight of the battery module, and improves the structural stability of the battery box.

Description

Technical Field

[0001] The present invention relates to the field of energy storage technology, and in particular to a battery box. Background Art

[0002] Existing battery boxes include a box shell, multiple horizontal support plates, battery modules, and a cover. The box shell has a top plate, a bottom plate, and side plates connecting the top and bottom plates. A cavity and an opening connecting the cavity are formed between the top, bottom, and side plates. Each horizontal support plate is positioned within the cavity and is spaced longitudinally. Each battery module is supported on a corresponding horizontal support plate, and the cover is connected to the box shell and closes the opening. Due to the heavy mass of the battery module, the horizontal support plates and the box shell can bend and deform, making the battery module support unstable and posing a potential safety hazard.

[0003] In view of this, the present invention is proposed. Summary of the Invention

[0004] The invention provides a battery box and an electric vehicle.

[0005] The present invention adopts the following technical solutions:

[0006] The first object of the present application is to provide a battery box, comprising:

[0007] A box shell, wherein the box shell has a cavity and an opening communicating with the cavity;

[0008] A longitudinal support beam, the longitudinal support beam being arranged in the cavity and located on one side of the opening, with both ends of the longitudinal support beam being respectively connected to the inner wall of the box shell;

[0009] A plurality of support plates, each of the support plates is disposed in the cavity, and each of the support plates is sequentially spaced apart in the longitudinal direction;

[0010] A plurality of battery modules, each of the battery modules is disposed in the cavity, each of the battery modules is supported on a corresponding support plate, and each of the battery modules is connected to a cable;

[0011] a condensing duct assembly, the condensing duct assembly being disposed in the cavity and connecting the battery modules in series;

[0012] a cover body, the cover body being connected to the box shell and being used to close or open the opening;

[0013] Wherein, the cable and the condensation pipe assembly are both limited to the support plate at multiple different locations.

[0014] Optionally, the battery box includes a plurality of connectors, each of which is respectively mounted on a different portion of the cable and / or condensation duct assembly, and the connector is detachably connected to the support plate.

[0015] Optionally, a plurality of connection holes are provided at one end of the support plate facing the opening;

[0016] Each of the connecting pieces is respectively plugged and fixed in the corresponding connecting hole.

[0017] Optionally, the battery box includes: a first condensation protection device and an inclined beam;

[0018] One end of the inclined beam is connected to the support plate, and the other end is connected to the box shell;

[0019] A BMS slave board is provided on one end of the battery module close to the opening;

[0020] The first condensation protection device is connected to the inclined beam, and the first condensation protection device is located between the BMS slave plate and the inclined beam located on the top thereof.

[0021] Optionally, the oblique beam includes an oblique beam rod and an adapter seat;

[0022] The adapter is connected to the support plate by fasteners, and the adapter is located just above the BMS of the battery module at the bottom;

[0023] One end of the inclined beam is connected to the adapter, and the other end of the inclined beam is connected to the box shell;

[0024] The first condensation protection device covers at least one side of the adapter facing the BMS slave plate.

[0025] Optionally, the box shell has a top plate, a bottom plate, and side plates connecting the top plate and the bottom plate, and the cavity and the opening are formed between the top plate, the bottom plate, and the side plates;

[0026] The two ends of the longitudinal support beam are respectively connected to the top plate and the bottom plate.

[0027] Optionally, a plurality of first notches and a plurality of second notches are provided on the longitudinal support beam;

[0028] The first notch and the second notch are both located on a side of the longitudinal support beam facing away from the opening;

[0029] Each of the support plates is arranged to pass through the corresponding first notch.

[0030] The second notch is used for connecting the condensation pipe assembly of the battery module and for the cables to pass through.

[0031] Optionally, the support plate includes:

[0032] two side beams, the side beams being connected to the inner wall of the box shell;

[0033] A plurality of plates, each of which is disposed between two side beams, and each of which is spaced apart in sequence along the length direction of the side beams, and each of which has two ends along the length direction connected to the two side beams respectively;

[0034] a plurality of longitudinal beams, each of which is disposed between two side beams, and each of which is spaced apart in sequence along the width direction of the side beams, the longitudinal beams being parallel to the side beams, the longitudinal beams having both ends along the length direction respectively connected to the two plates at the end portions, and the longitudinal beams penetrating the plate at the middle portion;

[0035] The battery module is supported on the plate and the longitudinal beam.

[0036] Optionally, the battery box includes a box-penetrating connector;

[0037] The box shell comprises a bottom plate, a top plate and side plates connecting the bottom plate and the top, wherein the bottom plate, the top plate and the side plates enclose a cavity, and a first communicating hole is provided on the bottom plate;

[0038] The box-penetrating joint includes an inner section, an outer section, and a sealing seat. The inner section and the outer section are respectively arranged on both sides of the sealing seat. The inner section and the outer section are connected, and the length of the inner section is greater than the length of the outer section. The inner section passes through the first communicating hole. The sealing seat is attached to the outer surface of the bottom plate. The condensation duct assembly is connected to the inner section.

[0039] The first fastener passes through the bottom plate from the inside of the cavity and is connected to the sealing seat.

[0040] A second object of the present application is to provide an electric vehicle, comprising:

[0041] Electric body;

[0042] An assembly box, the assembly box being connected to the electric vehicle body and having a cavity;

[0043] Several battery boxes as described above are installed in the cavity and are electrically connected to the power system of the electric vehicle body.

[0044] By adopting the above technical solution, the present invention has the following beneficial effects:

[0045] The battery box of the present application is provided with a longitudinal support beam on the inner wall of the box shell on the opening side. The two ends of the longitudinal support beam are respectively supported on the inner wall of the box shell, which supports the box shell and prevents the box shell from bending and deforming due to the excessive weight of the battery module, thereby improving the structural stability of the battery box.

[0046] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The accompanying drawings are part of this application and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an undue limitation of the present invention. Obviously, the drawings described below are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without inventive effort. In the accompanying drawings:

[0048] Figure 1 A schematic diagram of the appearance and structure of the battery box provided in an embodiment of the present application;

[0049] Figure 2 A schematic diagram of the internal structure of a battery box provided in an embodiment of the present application without the cover (the first condensation protection device is in the deployed state in the figure);

[0050] Figure 3 for Figure 2 An enlarged view of point A in the middle (the first condensation protection device is in the deployed state);

[0051] Figure 4 This is a schematic structural diagram of the first condensation protection device of the battery box provided in an embodiment of the present application in an unfolded state;

[0052] Figure 5 This is a schematic structural diagram of the first condensation protection device of the battery box provided in an embodiment of the present application, attached to the inclined beam and in a bent state;

[0053] Figure 6 A schematic structural diagram of a second condensation protection device for a battery box according to an embodiment of the present application;

[0054] Figure 7 A schematic diagram of the internal structure of the rear opening of the battery box provided in an embodiment of the present application;

[0055] Figure 8 A schematic structural diagram of the longitudinal support beam of the battery box provided in an embodiment of the present application;

[0056] Figure 9 for Figure 2 Enlarged view of point B in the middle;

[0057] Figure 10A schematic diagram of the structure of the connection assembly located on the rear opening side of the battery box provided in an embodiment of the present application;

[0058] Figure 11 A schematic diagram of the structure of the connection assembly located on one side of the opening of the battery box provided in an embodiment of the present application;

[0059] Figure 12 A schematic diagram of the structure of a battery box provided in an embodiment of the present application without the internal structure;

[0060] Figure 13 A schematic structural diagram of a support plate of a battery box provided in an embodiment of the present application;

[0061] Figure 14 A schematic structural diagram of a plate body located at an end portion of a support plate of a battery box provided in an embodiment of the present application;

[0062] Figure 15 A schematic structural diagram of a central support plate of a battery box according to an embodiment of the present application;

[0063] Figure 16 Another perspective view of the internal structure of the battery box provided by an embodiment of the present application without the cover (the first condensation protection device is in the deployed state in the figure);

[0064] Figure 17 for Figure 16 Enlarged view of point C in the middle;

[0065] Figure 18 for Figure 2 Enlarged view of point D in the middle;

[0066] Figure 19 A partial top view of the interior of the cavity of the battery box provided in an embodiment of the present application;

[0067] Figure 20 A schematic diagram of the structure of the battery box through-box connector provided in an embodiment of the present application;

[0068] Figure 21 A schematic structural diagram of a terminal block of a battery box provided in an embodiment of the present application;

[0069] Figure 22 A schematic diagram of the structure of the battery box provided in an embodiment of the present application, wherein the terminal block is installed on the bottom plate;

[0070] Figure 23 A schematic structural diagram of the side bottom beam of the battery box provided in an embodiment of the present application;

[0071] Figure 24 A schematic diagram of the structure of an electric vehicle provided in an embodiment of the present application;

[0072] Figure 25The buffer device of the electric vehicle provided in the embodiment of the present application is a structural schematic diagram of a positioning pin.

[0073] In the figure, the box shell 1, the cover body 11, the top plate 12, the bottom plate 13, the first connecting hole 131, the second connecting hole 132, the third connecting hole 133, the fourth connecting hole 134, the side plate 14, the support plate 2, the side beam 21, the plate body 22, the inner plate 221, the outer plate 222, the fixing hole 2221, the groove 223, the outer extension section 224, the connecting hole 2241, the longitudinal beam 23, the oblique beam 3, the oblique beam rod 31, the adapter seat 32, the battery module 4, the BMS slave plate 41, the first condensation protection device 5, the oblique beam connecting portion 51, the first bottom wall 511, the side wall 512, the seat connecting portion 52, the second bottom wall 521, the outer wall 522, the inner extension wall 523, the second condensation protection device 6, the notch portion 61, the longitudinal support beam 7, the first notch 71, the second notch 72, the recessed portion 73, and the connecting assembly 8 , connector 81, avoidance groove 811, first connector 81a, second connector 81b, first connecting hole 812, fastener 82, buffer 83, electric body 9, front end 91, body 92, bottom bracket 93, support frame 10, assembly box 100, connecting ear 1001, buffer device 101, positioning pin 1011, box joint 102, inner section 1021, outer section 1022, sealing seat 1023, hot melt nut 1024, first connecting groove 1024a, wiring seat 103, wiring body 1031, mating seat 1032, second connecting groove 1032a, side bottom beam 104, through groove 1041, metal body 105, wire connection hole 1051, condensation duct assembly 106, first fastener 107, second fastener 108, connector 109, cable 110.

[0074] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0075] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0076] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0077] In the description of the present invention, it should be noted that, unless otherwise specified or limited, the terms "mounted" and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0078] Example 1

[0079] See also Figures 1 to 25 As shown, a first embodiment of the present application provides a battery box, comprising: a box shell 1, a longitudinal support beam 7, a plurality of support plates 2, a plurality of battery modules 4, a condensation duct assembly 106, and a cover 11. The box shell 1 has a cavity and an opening connected to the cavity. The longitudinal support beam 7 is disposed in the cavity and is located on one side of the opening. The two ends of the longitudinal support beam 7 are respectively connected to the inner wall of the box shell 1. Each of the support plates 2 is disposed in the cavity, and each of the support plates 2 is disposed in sequence along the longitudinal direction. Each of the battery modules 4 is disposed in the cavity, and each of the battery modules 4 is supported by a corresponding support plate 2, and each of the battery modules 4 is connected to a cable. The condensation duct assembly 106 is disposed in the cavity and connects the battery modules 4 in series. The condensation duct assembly 106 has a water flow channel inside, and cooling water flows through the water flow channel to cool each of the battery modules 4, so that each of the battery modules 4 can maintain a normal temperature and operate safely. The connection relationship and working principle of the condensing duct assembly 106 and the battery module 4 are both mature existing technologies. The existing data discloses more of its principles, which do not belong to the invention point of this application, and this application will not repeat them. The cover 11 is connected to the box shell 1, and the cover 11 is used to close or open the opening. Among them, the cable 110 and the condensing duct assembly 106 are both limited to the support plate 2 at multiple different locations. The battery box of the present application is provided with the longitudinal support beam 7 on the inner wall of the box shell 1 on the side of the opening, and the two ends of the longitudinal support beam 7 are respectively supported on the inner wall of the box shell 1, which supports the box shell 1, prevents the weight of the battery module 4 from being too heavy to cause the box shell 1 to bend and deform, and improves the structural stability of the battery box.

[0080] like Figure 9 As shown, the battery box includes a plurality of connectors 109, each of which is respectively mounted on a different portion of the cable 110 and / or the condensation duct assembly 106. The connectors 109 are detachably connected to the support plate 2, making it convenient to lay out and secure the cable 110 and / or the condensation duct assembly 106 in the box housing 1.

[0081] like Figure 2 and Figure 9 As shown, the support plate 2 is provided with a plurality of connection holes 2241 at one end facing the opening, and each of the connection members 109 is respectively inserted and fixed in a corresponding connection hole 2241. When used to fix the cable 110, the connection member 109 can be a cable tie.

[0082] like Figure 2 and Figure 3 As shown, the battery box includes a first condensation protection device 5 and an inclined beam 3. One end of the inclined beam 3 is connected to the support plate 2, and the other end is connected to the box shell 1. A BMS slave board 41 is installed on the battery module 4 near the opening. BMS stands for battery management system, and the BMS slave board 41 is primarily used to collect voltage and temperature information within the battery module 4. The BMS slave board 41 is located at the bottom of the inclined beam 3. The first condensation protection device 5 is connected to the inclined beam 3, located between the BMS slave board 41 and the inclined beam 3 located at the top. The first condensation protection device 5 is connected to at least the inclined beam 3, with the projection of the BMS slave board 41 onto the plane of the corresponding support plate 2 at the top falling into the first condensation protection device 5. The first condensation protection device 5 can be made of a rigid material, fitted over the outer surface of the inclined beam 3, or a flexible material, such as rubber or foam. A flexible material with a certain degree of water absorption, such as foam, is preferred. The first condensation protection device 5 can absorb a certain amount of condensed liquid and play a role in heat preservation for the inclined beam 3, so that the condensed liquid is not easy to condense on the inclined beam 3, and can effectively prevent the condensed liquid on the inclined beam 3 from dripping onto the BMS plate 41, eliminating safety hazards and improving the safety of the battery box.

[0083] like Figure 2 As shown, the diagonal beam 3 includes a diagonal beam rod 31 and an adapter 32. The adapter 32 is connected to the support plate 2 via fasteners and is located directly above the BMS slave plate 41 of the bottom battery module 4. One end of the diagonal beam rod 31 is connected to the adapter 32, and the other end is connected to the housing 1. The first condensation protection device 5 covers at least the side of the adapter 32 facing the BMS slave plate 41.

[0084] like Figure 2 and Figure 5 As shown, the first condensation protection device 5 includes an inclined beam connection portion 51 and a seat connection portion 52. The inclined beam connection portion 51 is connected to the inclined beam rod 31, and the seat connection portion 52 is connected to at least the adapter seat 32. The inclined beam connection portion 51 is connected to the lower surface of the inclined beam rod 31 to cover the position of the inclined beam rod 31 above the BMS slave plate 41.

[0085] The inclined beam connecting portion 51 covers at least the side of the inclined beam rod 31 facing the BMS slave plate 41, and the base connecting portion 52 covers at least the side of the base facing the BMS slave plate 41. This allows the first condensation protection device 5 to cover the entire side of the inclined beam 3 above the BMS slave plate 41. The first condensation protection device 5 can absorb a certain amount of condensed liquid and provide insulation for the inclined beam 3, preventing condensed liquid from condensing on the inclined beam 3. It can also effectively prevent condensed liquid from flowing down the inclined beam 3, thereby avoiding safety hazards to the BMS slave plate 41 below the inclined beam 3.

[0086] like Figure 5 As shown, the diagonal beam connecting portion 51 includes a first bottom wall 511 and side walls 512 located on both sides of the first bottom wall 511 along the width direction, and the first bottom wall 511 and the side walls 512 are both attached to the diagonal beam rod 31. The first bottom wall 511 is attached to the lower surface of the diagonal beam rod 31, and the side walls 512 are both attached to the two side surfaces of the diagonal beam rod 31.

[0087] like Figure 5 As shown, the seat body connecting portion 52 includes a second bottom wall 521 and an outer wall 522 and an inner extension wall 523 located on both sides of the second bottom wall 521 along the width direction, the inner extension wall 523 is located on the side of the outer wall 522 away from the cover body 11, and the inner extension wall 523 and the outer wall 522 have an angle, the second bottom wall 521 and the outer wall 522 are both attached to the adapter seat 32, and the inner extension wall 523 is attached to the support plate 2.

[0088] like Figures 2 to 4 As shown, the first condensation protection device 5 can be a hard structure or a flexible structure. Taking the flexible structure as an example, the first condensation protection device 5 is a flexible sheet that is cut and bent and then attached to the inclined beam 3. The flexible sheet is soft and easy to cut, and is easy to be bent and attached to the lower surface of the inclined beam 3, and has good adaptability.

[0089] like Figure 2 and Figure 6 As shown, the battery box further includes a second condensation protection device 6, which is connected to the lower surface of the support plate 2. The second condensation protection device 6 can be made of the same material as the first condensation protection device 5.

[0090] like Figure 3 and Figure 6 As shown, the second condensation protection device 6 is in the form of a sheet and is attached to the lower surface of the support plate 2 near one end of the opening. The second condensation protection device 6 covers the BMS slave plate 41 on the support plate 2 to prevent condensed liquid on the support plate 2 from dripping onto the BMS slave plate.

[0091] like Figure 6 As shown, the second condensation protection device 6 is provided with a notch 61 at a location corresponding to the end of the oblique beam 3 for connecting to the adapter 32 of the support plate 2. The notch 61 avoids the adapter 32, and the shape of the notch 61 matches the shape of the inner extension wall 523. The inner extension wall 523 can extend exactly to the notch 61, thereby completely covering the BMS from the lower surface of the support plate 2 above the plate 41 near the opening, further improving safety.

[0092] In one possible embodiment, Figure 1 and Figure 2 As shown, the housing 1 comprises a top plate 12, a bottom plate 13, and side plates 14 connecting the top plate 12 and the bottom plate 13. The cavity and the opening are formed between the top plate 12, the bottom plate 13, and the side plates 14. The ends of the longitudinal support beam 7 are respectively connected to the top plate 12 and the bottom plate 13. The ends of the longitudinal support beam 7 can be respectively connected to the top plate 12 and the bottom plate 13 by fasteners or welding.

[0093] like Figure 2 As shown, the battery box includes at least two columns of battery modules 4. The battery modules 4 in each column are arranged in sequence in a direction perpendicular to the bottom plate 13. A gap cavity is formed between two adjacent columns of battery modules 4, and the longitudinal support beam 7 is arranged directly opposite the gap cavity. The gap cavity is located in the middle of the top plate 12 and the bottom plate 13 in the width direction. The two ends of the longitudinal support beam 7 are supported at the middle of the top plate 12 and the bottom plate 13, respectively, making the support structure more stable. In addition, there are some pipeline connection structures at the ends of the battery modules 4. The support position of the longitudinal support beam 7 avoids the end face of the battery module 4 and does not interfere with the connection of the pipelines on the end face of the battery module 4, which facilitates the wiring and maintenance of the battery module 4.

[0094] like Figure 2 and Figure 8As shown, the longitudinal support beam 7 is provided with a plurality of first notches 71 and a plurality of second notches 72. The first notches 71 and the second notches 72 are both located on the side of the longitudinal support beam 7 facing away from the opening. Each support plate 2 is provided through a corresponding first notch 71. The first notches 71 avoid the support plate 2, without affecting its installation position. The support plate 2 is supported on the first notches 71, and the first notches 71 also limit the position of the support plate 2. The support plate 2 and the first notches 71 cooperate with each other to provide greater structural stability for the support plate 2 and the longitudinal support beam 7. The second notches 72 are used to pass through the condensation duct assembly 106 and the cable 110 connecting the battery module 4. The second notches 72 avoid the condensation duct assembly 106 and the cable 110, without affecting their layout, and the second notches 72 limit the position of the condensation duct assembly 106 and the cable 110.

[0095] like Figure 2 and Figure 8 As shown, the longitudinal support beam 7 is plate-shaped, and the plane in which the longitudinal support beam 7 lies is parallel to the side plate 14. Recesses 73 are provided on both sides of the longitudinal support beam 7 along its thickness, and the battery module 4 extends into the recesses 73. The recesses 73 avoid the battery module 4, and the bottom of the battery module 4 extends into the recesses 73, without affecting the installation position of the battery module 4. Furthermore, the recesses 73 merely reduce the thickness of the longitudinal support beam 7 and do not seriously affect the structural strength of the support plate 2.

[0096] like Figure 2 and Figure 9 As shown, the battery box includes a connecting assembly 8, which is respectively connected to two adjacent battery modules 4 on the same support plate 2. The connecting assembly 8 is respectively connected to both ends of the two adjacent battery modules 4 on the same support plate 2, so that the two adjacent battery modules 4 on the same support plate 2 are connected to form a whole. The connection has better structural stability. During the movement of the battery box, the two battery modules 4 will not move or shake relative to each other, thereby improving safety.

[0097] like Figure 7As shown, the battery box includes a support frame 10, and the support frame 10 is arranged between the top plate 12, the bottom plate 13 and the two adjacent support plates 2. The battery box also has a rear opening, and the rear opening is located on the side opposite to the opening (which can be understood as the front opening). The support frame 10 is located on one side of the rear opening. There are multiple support frames 10, and each support frame 10 is supported between the top plate 12, the bottom plate 13 and the two adjacent support plates 2. The longitudinal support beams 7 and the support frames 10 are respectively supported on both sides of the box shell 1 along the length direction, and play a role of stabilizing support for the support plates 2 and the box shell 1, preventing the support plates 2 and the box shell 1 from bending and deforming under the action of gravity of the battery module 4. As shown Figures 7 to 11 As shown, the connection assembly 8 includes a connector 81 and a fastener 82. The connector 81 has a central portion with an escape groove 811 for circumventing the support frame 10. The connector 81 is located at both ends of the escape groove 811 and is connected to the battery module 4 via fasteners 82. The connector 81 has first connection holes 812 at both ends. The fasteners 82 can be screws, the rods of which pass through the first connection holes 812 and connect to two adjacent battery modules 4 on the same support plate 2 to connect and secure the two adjacent battery modules 4 on the same support plate 2. The connector 81 includes a first connector 81a and a second connector 81b. The first connector 81a is located on one side of the opening, and the second connector 81b is located on the other side of the rear opening. The second connector 81b has the escape groove 811. The support frame 10 passes through the escape groove 811. The escape groove 811 also serves to limit and secure the support frame 10.

[0098] like Figure 10 As shown, the inner wall of the avoidance groove 811 is provided with a buffer 83, and the buffer 83 is attached to the support frame 10. The support frame 10 and the connector 81 are both made of metal. When the two are in direct contact, it is a rigid contact. During the movement of the battery box, there will be friction between the support frame 10 and the connector 81, and they will wear each other. The buffer 83 is provided on the inner wall of the avoidance groove 811, so that the support frame 10 and the connector 81 are in indirect contact, which can effectively reduce the wear between the two. The buffer 83 can be made of a flexible material, such as a rubber sheet. The rubber sheet can be bonded to the inner wall of the avoidance groove 811 by a colloid, which will have a better effect.

[0099] like Figure 12 and Figure 13As shown, the support plate 2 includes: two side beams 21, multiple plate bodies 22 and multiple longitudinal beams 23. The side beams 21 are connected to the inner wall of the box shell 1. Each plate body 22 is arranged between the two side beams 21, and each plate body 22 is arranged in sequence along the length direction of the side beam 21, and each plate body 22 is connected to the two side beams 21 at both ends along the length direction. Each longitudinal beam 23 is arranged between the two side beams 21, and each longitudinal beam 23 is arranged in sequence along the width direction of the side beam 21. The longitudinal beam 23 is parallel to the side beam 21, and the two ends of the longitudinal beam 23 are connected to the two plate bodies 22 at the end, and the longitudinal beam 23 passes through the plate body 22 at the middle. The battery module 4 is supported on the plate body 22 and the longitudinal beam 23. The plate structure makes the contact surface between the support plate 2 and the bottom surface of the battery module larger, and the structural strength is higher, the stability is better, and it is not easy to deform.

[0100] like Figure 13 and Figure 14 As shown, the two plates 22 at the end are provided with fixing holes 2221 for connecting and fixing the battery module, and the fixing holes 2221 extend along the thickness direction of the plate 22. The battery module can be fixed to the plate 22 using bolts, and the rods of the screws pass through the fixing holes 2221 and are connected to the battery module.

[0101] like Figure 13 and Figure 14 As shown, the two plates 22 at the ends each have an inner plate portion 221 and an outer plate portion 222. The longitudinal beam 23 is connected to the inner plate portion 221, and the outer plate portion 222 is connected to the side of the inner plate portion 221 facing away from the longitudinal beam 23. The outer plate portion 222 is a solid plate 22, and the fixing holes 2221 are provided on the outer plate portion 222. A cavity is provided within the inner plate portion 221. The outer plate portion 222 is a solid structure with high structural strength, conveniently providing the fixing holes 2221, and conveniently fastening the battery module 4 with bolts.

[0102] like Figure 14 As shown, a plurality of cavities are provided in the inner plate portion 221, and each of the cavities is sequentially spaced along the length direction of the longitudinal beam 23, and the cavities pass through the inner plate portion 221 along the length direction of the inner plate portion 221. Figure 5 As shown, a cavity is provided in each of the central plates 22. The cavity makes the plate 22 structure lighter.

[0103] like Figure 15As shown, multiple cavities are provided in each of the central plates 22. The cavities in the central plates 22 are sequentially spaced apart along the width of the plates 22, and the cavities in the central plates 22 extend through the plates 22 along the length of the plates 22. The cavities in the inner plates 221 can reduce the weight of the plates 22, making the support plates 2 lighter and using fewer consumables without affecting the structural strength of the support plates 2, thereby saving costs.

[0104] like Figure 15 As shown, a plurality of inner grooves 223 are provided on the surface of the plate body 22 located in the middle. Each inner groove 223 is sequentially spaced along the length direction of the plate body 22 and extends along the width direction of the plate body 22. Each longitudinal beam 23 is respectively provided through a corresponding inner groove 223, and the two ends of the longitudinal beam 23 are respectively connected to the thickness end surfaces of the two plate bodies 22 located at the end. The grooves 223 have the function of limiting and fixing the longitudinal beams 23, and the depth of the grooves 223 is consistent with the thickness of the longitudinal beams 23, so that the intersection of the longitudinal beams 23 and the plate body 22 can be precisely embedded in the grooves 223, making the surface of the support plate 2 a flat structure, which is convenient for installing the battery module 4.

[0105] like Figure 13 and Figure 14 As shown, at least one end surface of the plate 22 at the end portion is provided with a connection hole 2241 for connection and fixation. The end of the plate 22 at the end portion, facing away from the longitudinal beam 23, is provided with an outer extension section 224, and the connection hole 2241 is provided on the thickness end surface of the outer extension section 224. The outer extension section 224 is positioned further outward to facilitate connection operations.

[0106] In one possible embodiment, Figure 16 and Figure 19 As shown, the battery box includes a box connector 102. The box shell 1 has a bottom plate 13, a top plate 12 and a side plate 14 connecting the bottom plate 13 and the top plate 12. The bottom plate 13, the top plate 12 and the side plate 14 enclose a cavity. The bottom plate 13 is provided with a first connecting hole 131. Figure 20As shown, the box-penetrating joint 102 includes an inner section 1021, an outer section 1022, and a sealing seat 1023. The inner section 1021 and the outer section 1022 are respectively arranged on either side of the sealing seat 1023. The inner section 1021 and the outer section 1022 are connected, and the length of the inner section 1021 is greater than the length of the outer section 1022. The inner section 1021 passes through the first communicating hole 131. The sealing seat 1023 is attached to the outer surface of the bottom plate 13, which is the lower surface of the bottom plate 13. The condensation duct assembly 106 is connected to the inner section 1021. The box-penetrating joint 102 is generally provided with two: one is a water inlet box-penetrating joint 102, the outer section 1022 of which is connected to the water inlet pipe, and the other is a water outlet box-penetrating joint 102, the outer section 1022 of which is connected to the water outlet pipe. The first fastener 107 passes through the bottom plate 13 from the inside of the cavity and is connected to the sealing seat 1023. The first fastener 107 can be a screw, and the rod of the screw passes through the first connecting hole on the bottom plate 13 from the inside of the cavity and is connected to the sealing seat 1023. When installing the box-penetrating joint 102, the inner section 1021 of the box-penetrating joint 102 is first passed through the first connecting hole 131 from the outside of the bottom plate 13, so that the sealing seat 1023 is attached to the outer surface of the bottom plate 13. Then, a tool is used to pass the first fastener 107 from the inside of the box shell 1 through the bottom plate 13 and connect it to the sealing seat 1023. Since there is sufficient space inside the box shell 1, it is convenient for the operator to use tools to perform installation operations from the inside of the box shell 1 to the bottom plate 13, making the installation operation of the box-penetrating joint 102 very convenient.

[0107] like Figure 17 and Figure 20 As shown, a first connecting groove 1024a is provided on the side of the sealing seat 1023 facing the outer surface of the base plate 13. One end of a first fastener 107 passes through the base plate 13 from within the cavity and connects to the first connecting groove 1024a. The base plate 13 has a third connecting hole 133, and one end of the first fastener 107 passes through the third connecting hole 133 and connects to the first connecting groove 1024a, thereby connecting the box-through joint 102 to the base plate 13.

[0108] The first connecting groove 1024a has an internal thread, and the first fastener 107 includes a first cap and a first screw connected to the first cap. The first screw passes through the bottom plate 13 and is connected to the first connecting groove 1024a. The cap is located on the inner side of the bottom plate 13. The first screw passes through a third connecting hole 133 on the bottom plate 13 and is connected to the internal thread of the first connecting groove 1024a. The cap is located on the inner side of the bottom plate 13.

[0109] like Figure 20As shown, a groove is provided on one side of the outer surface of the sealing seat 1023 facing the base plate 13, and a hot melt nut 1024 is embedded in the groove, and the hot melt nut 1024 has the first connecting groove 1024a. The hot melt nut 1024 is a fixing part commonly used in plastic materials. Its working principle is to firmly fix the nut in the plastic through hot melt technology. The working principle of the hot melt nut 1024 is to preheat, melt and solidify first. After the plastic is completely cooled and solidified, the hot melt nut 1024 is firmly fixed in the plastic. Due to the melting and solidification between the plastic and the nut, the nut has a good fixing effect in the plastic. Compared with mechanical fixation, the hot melt nut 1024 is more firmly fixed and can adapt to more types of plastic materials. The hot melt nut 1024 and the first fastener 107 are used to connect the box-penetrating joint 102 to the base plate 13, so that the connection stability of the box-penetrating joint 102 is better. The working principle of the hot melt nut 1024 is a mature existing technology and does not belong to the invention point of this application, so this application will not elaborate on it.

[0110] like Figure 17 and Figure 22 As shown, the battery box includes a terminal block 103, which is provided on the bottom plate 13 and electrically connected to each of the battery modules 4. The terminal block 103 is provided on the bottom plate 13, which is located lower, making wiring operations more convenient and taking up less space.

[0111] like Figure 17 and Figure 21 As shown, the wiring seat 103 includes a wiring body 1031 and a matching seat 1032. A plurality of wiring conductors are provided on the wiring body 1031. The matching seat 1032 is provided on the wiring body 1031. The bottom plate 13 is provided with a second connecting hole 132. The wiring body 1031 is provided through the second connecting hole 132. The wiring body 1031 is electrically connected to each of the battery modules 4. The matching seat 1032 is attached to the outer surface of the bottom plate 13.

[0112] like Figure 21 and Figure 22As shown, the mating seat 1032 is provided with a second connecting groove 1032a, and one end of the second fastener 108 passes through the bottom plate 13 from the interior of the cavity and is connected to the second connecting groove 1032a. The bottom plate 13 has a fourth connecting hole 134. When installing the wiring seat 103, the wiring body 1031 is first passed through the second connecting hole 132 from the outside of the bottom plate 13, so that the mating seat 1032 is attached to the outer surface of the bottom plate 13. Then, a tool is used to pass the second fastener 108 from the inside of the box shell 1 through the fourth connecting hole 134 of the bottom plate 13 and connect it to the second connecting groove 1032a of the mating seat 1032. There is sufficient space inside the box shell 1, which facilitates the operator to use tools to install the wiring seat 103 from the inside of the box shell 1 to the bottom plate 13, making the installation operation of the wiring seat 103 very convenient.

[0113] like Figure 16 and Figure 19 As shown, the battery box includes two parallel and spaced side bottom beams 104, two side panels 14 are respectively connected to the two side bottom beams 104, and the bottom plate 13 is respectively connected to the two side bottom beams 104. The side bottom beams 104 are supported on a supporting surface, and the distance between the bottom plate 13 and the supporting surface is greater than the length of the box-penetrating joint 102. For convenience, the box-penetrating joint 102 extends into the space between the bottom plate 13 and the supporting surface and passes through the first connecting hole 131 from the outside of the bottom plate 13.

[0114] like Figure 18 and Figure 23 As shown, the battery box includes a metal body 105, a through slot 1041 is provided in the side bottom beam 104, and the through slot 1041 runs through the side bottom beam 104 along the length direction of the side bottom beam 104, and the metal body 105 is inserted into one side of the notch of the through slot 1041. The interior of the through slot 1041 is hollow, which can reduce the weight of the side bottom beam 104. Without affecting the structural strength of the side bottom beam 104, the weight of the side bottom beam 104 is made lighter, less consumables are used, and costs are saved. The notch side of the through slot 1041 is located at the bottom of the box shell 1, which has a large weighing force. The metal body 105 forms a solid structure there, which enhances the structural strength and makes the box shell 1 more stable.

[0115] like Figure 18 As shown, a grounding wire connection hole 1051 is provided on the metal body 105. The grounding wire connection hole 1051 is used to pass through the grounding wire, making it convenient for the grounding wire to pass through.

[0116] Example 2

[0117] See also Figure 24 and Figure 25As shown, the present application also provides an electric vehicle, comprising: an electric body 9, an assembly box 100, and a plurality of battery boxes as described above. The assembly box 100 is connected to the electric body 9 and has a cavity. The battery boxes are installed in the cavity and are electrically connected to the power system of the electric body 9.

[0118] The electric vehicle body 9 has a front 91 and a body 92 connected to the front 91. The bottom of the assembly box 100 is connected to the body 92. A base 93 is connected to the body 92 of the electric vehicle (including battery-swapping vehicles and charging vehicles). The base 93 connected to the body 92 can lock the bottom of the assembly box 100 through a locking mechanism. However, the battery box of an electric vehicle is generally taller, resulting in a higher center of gravity and a lower natural frequency. During driving, the electric vehicle is excited by random loads from the road surface. The natural frequency of the battery box is close to the excitation frequency of the road surface, which is prone to resonance. Long-term resonance will damage the battery box, especially the bottom of the battery box and the base 93, thereby reducing the reliability of the battery box.

[0119] In order to solve the above problems, Figure 24 and Figure 25 As shown, the assembly box 100 is connected to the vehicle head 91, and a buffer device 101 is connected between the assembly box 100 and the vehicle head 91. The buffer device 101 may include two positioning pins 1011 provided on the vehicle head. Two connecting ears 1001 are provided on a side of the assembly box 100 corresponding to the vehicle head. The two positioning pins 1011 can be respectively connected to the corresponding connecting ears 1001 to connect the assembly box 100 to the vehicle head 91. The positioning pins 1011 can be covered with rubber sleeves. During the driving process of the electric vehicle, the rubber sleeves can effectively reduce the resonance between the battery box and the road surface and buffer the direct friction between the positioning pins 1011 and the connecting ears. The buffer device 101 can be a shock-absorbing rubber, which is connected between the assembly box 100 and the vehicle head 91, and is connected to at least one of the assembly box 100 and the vehicle head 91, and can be connected by adhesive connection or fasteners 82, etc.; the buffer device 101 can also be a suspension system, and the assembly box 100 can also be other shock-absorbing devices.

[0120] The electric vehicle of the present application has the battery box installed in the assembly box 100. The bottom of the assembly box 100 is connected to the vehicle body 92, and the assembly box 100 is connected to the vehicle head 91. A buffer device 101 is connected between the assembly box 100 and the vehicle head 91. The buffer device 101 effectively increases the natural frequency of the battery box, preventing resonance with road excitation, reducing the vibration amplitude of the battery box, and thus preventing the battery box's lower frame or bottom bracket 93 from breaking and failing, thereby improving the reliability and durability of the battery box.

[0121] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with this patent can make slight changes or modifications to equivalent embodiments using the above-mentioned technical contents without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. A battery box comprising: A box shell, a longitudinal support beam, a plurality of support plates, a plurality of battery modules, a condensation duct assembly and a cover body, wherein the box shell has a cavity and an opening communicating with the cavity, the longitudinal support beam, the support plate, the battery module and the condensation duct assembly are all arranged in the cavity, the longitudinal support beam is located on one side of the opening, and the two ends of the longitudinal support beam are respectively connected to the inner wall of the box shell, the support plates are arranged in sequence along the longitudinal direction, the battery modules are respectively supported on the corresponding support plates, and the battery modules are connected to the cables, a BMS slave board is provided on one end of the battery module close to the opening, the condensation duct assembly connects the battery modules in series, the cover body is connected to the box shell, and the cover body is used to close or open the opening, wherein the cables and the condensation duct assembly are limited to the support plates at multiple different positions; It also includes: an inclined beam and a first condensation protection device connecting the inclined beam; An oblique beam, comprising an oblique beam rod and a transfer seat, wherein the transfer seat is connected to the support plate via a fastener, one end of the oblique beam rod is connected to the transfer seat, and the other end of the oblique beam rod is connected to the box shell; A first condensation protection device is located between the BMS slave plate and the inclined beam located at the top of the BMS slave plate. The first condensation protection device includes an inclined beam connecting portion and a seat connecting portion. The inclined beam connecting portion at least covers the side of the inclined beam rod facing the BMS slave plate, and the seat connecting portion at least covers the side of the adapter facing the BMS slave plate. The projection of the BMS slave plate onto the plane where the corresponding support plate on the top is located falls into the first condensation protection device, so that the first condensation protection device covers the side of the inclined beam above the BMS slave plate.

2. The battery box according to claim 1, characterized in that: It comprises a plurality of connectors, each of which is respectively sleeved on a different part of the cable and / or condensation pipe assembly, and the connector is detachably connected to the support plate.

3. The battery box according to claim 2, characterized in that: The support plate is provided with a plurality of connection holes at one end facing the opening; Each of the connecting pieces is respectively plugged and fixed in the corresponding connecting hole.

4. The battery box according to claim 1, characterized in that: The adapter is located just above the BMS slave board of the bottom battery module; The first condensation protection device covers at least one side of the adapter facing the BMS slave plate.

5. The battery box according to claim 1, characterized in that: The box shell comprises a top plate, a bottom plate and side plates connecting the top plate and the bottom plate, wherein the cavity and the opening are formed between the top plate, the bottom plate and the side plates; The two ends of the longitudinal support beam are respectively connected to the top plate and the bottom plate.

6. The battery box according to claim 1, characterized in that: A plurality of first notches and a plurality of second notches are provided on the longitudinal support beam; The first notch and the second notch are both located on a side of the longitudinal support beam facing away from the opening; Each of the support plates is disposed through the corresponding first notch; The second notch is used for connecting the condensation pipe assembly of the battery module and for the cables to pass through.

7. The battery box according to claim 1, characterized in that: The support plate comprises: two side beams, the side beams being connected to the inner wall of the box shell; A plurality of plates, each of which is disposed between two side beams, and each of which is spaced apart in sequence along the length direction of the side beams, and each of which has two ends along the length direction connected to the two side beams respectively; a plurality of longitudinal beams, each of which is disposed between two side beams, and each of which is spaced apart in sequence along the width direction of the side beams, the longitudinal beams being parallel to the side beams, the longitudinal beams having both ends along the length direction respectively connected to the two plates at the end portions, and the longitudinal beams penetrating the plate at the middle portion; The battery module is supported on the plate and the longitudinal beam.

8. The battery box according to claim 1, characterized in that: Including box-through joints; The box shell comprises a bottom plate, a top plate and side plates connecting the bottom plate and the top, wherein the bottom plate, the top plate and the side plates enclose a cavity, and a first communicating hole is provided on the bottom plate; The box-penetrating joint includes an inner section, an outer section, and a sealing seat. The inner section and the outer section are respectively arranged on both sides of the sealing seat. The inner section and the outer section are connected, and the length of the inner section is greater than the length of the outer section. The inner section passes through the first communicating hole. The sealing seat is attached to the outer surface of the bottom plate. The condensation duct assembly is connected to the inner section. The first fastener passes through the bottom plate from the inside of the cavity and is connected to the sealing seat.

9. An electric vehicle, characterized in that: include: Electric body; An assembly box, the assembly box being connected to the electric vehicle body and having a cavity; A battery box according to any one of claims 1-8, wherein the battery box is installed in the cavity and is electrically connected to the power system of the electric vehicle body.

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