Battery pack tray, battery pack and electric equipment

Abstract

The invention relates to the technical field of batteries, in particular to a battery pack tray, a battery pack and electric equipment. The battery pack tray is provided with a containing cavity, a mounting beam is arranged in the containing cavity, a mounting part is arranged on the mounting beam, and the mounting part is suitable for mounting a seat. A mounting part is arranged on a mounting beam in the battery pack tray, a seat in a vehicle is connected with the mounting part of the mounting beam, a traditional seat mounting beam is omitted, a whole vehicle body and a battery pack are integrated, the mounting height of the seat in the vehicle occupied by the seat mounting beam is reduced, the thickness of a vehicle chassis is reduced, and the vehicle is more compact. Therefore, the riding height of passengers is reduced.

Description

Technical Field

[0001] This application relates to the technical field of batteries, and particularly to a battery pack tray, a battery pack, and an electrical device. Background Art

[0002] Currently, with the rapid development of new energy vehicles, more and more people choose new energy vehicles, and their market share has increased significantly. Therefore, the performance indicators such as lightweight, cost reduction, and optimized space layout of new energy vehicles are required to be higher and higher.

[0003] Since the power source of new energy vehicles is the battery pack, they are characterized by large weight and large volume. In order to ensure the stability of the vehicle body, the battery pack needs to be added to the bottom of the vehicle. When connecting to the vehicle body chassis, there is a characteristic that the chassis is thick, resulting in a high sitting position for the driver. Moreover, the thick chassis and the high sitting position of the driver also cause problems such as limited interior space and inconvenient getting on and off for passengers. Summary of the Invention

[0004] Based on this, this application provides a battery pack tray, a battery pack, and an electrical device to reduce the chassis thickness and lower the sitting height, thereby solving problems such as low interior space and inconvenient getting on and off for passengers.

[0005] On the one hand, this application provides a battery pack tray. The battery pack tray is provided with a receiving cavity, an installation beam is arranged in the receiving cavity, and an installation part is arranged on the installation beam. The installation part is suitable for installing a seat.

[0006] In a possible implementation manner, the seat is connected to the installation part through an installation member, so that the seat is connected to the installation beam.

[0007] In a possible implementation manner, the seat is directly connected to the installation part through an installation member, so that the seat is adhesively connected to the installation beam.

[0008] In a possible implementation manner, both the receiving cavity and the installation beam are suitable for being sealed by a battery pack cover plate, and the installation member passes through the battery pack cover plate to connect the seat and the installation part.

[0009] In a possible implementation manner, the installation part is at least one of an installation hole and an installation groove;

[0010] And / or, the installation member is at least one of an installation bolt and an installation screw.

[0011] In a possible implementation manner, the battery pack tray is further provided with a wire arrangement beam, and the wire arrangement beam is arranged in the receiving cavity and connected to the installation beam.

[0012] In a possible implementation manner, a connection row is arranged in the wire arrangement beam, and the connection row is suitable for connecting to a battery module.

[0013] In a possible implementation, the flexible cable beam is provided with wire routing holes, which are arranged at one end facing the mounting beam. The wire routing holes are used for the connection wires to pass through, so as to enable the connection between the connection row and the battery module.

[0014] In a possible implementation, the flexible cable beam is provided with a seal, which is used to seal the wire routing holes.

[0015] In a possible implementation, the battery pack tray is provided with a plurality of accommodation cavities, and the plurality of accommodation cavities are adapted to respectively accommodate a plurality of battery modules.

[0016] In a possible implementation, the mounting beam is provided with exhaust holes, and the exhaust holes are adapted to be arranged corresponding to the explosion-proof valves of the battery cells in the battery module.

[0017] In a possible implementation, along the extension direction of the mounting beam, an exhaust groove is provided inside the mounting beam, and the exhaust groove penetrates through the inside of the mounting beam, and the exhaust holes are communicated with the exhaust groove.

[0018] In a possible implementation, a partition is provided inside the mounting beam, and the partition is arranged in the exhaust groove and is used to separate the battery modules on both sides of the mounting beam.

[0019] On the other hand, the present application provides a battery pack, including:

[0020] The above-mentioned battery pack tray;

[0021] A battery module, which is arranged in the accommodation cavity;

[0022] A battery pack cover plate, which covers the accommodation cavity.

[0023] In a possible implementation, the battery module includes a first battery module, and the first battery module includes a plurality of first battery cells. Along the extension direction of the mounting beam, the plurality of first battery cells are arranged in sequence.

[0024] In a possible implementation, adjacent two first battery cells are connected by a connecting piece, and the connecting piece is arranged in the mounting beam.

[0025] In a possible implementation, the battery module further includes a second battery module. The battery pack tray is provided with a plurality of accommodation cavities, and the first battery module and the second battery module are respectively arranged in different accommodation cavities.

[0026] In a possible implementation, the second battery module includes a plurality of second battery cells. Along the extension direction of the mounting beam, the plurality of second battery cells are arranged in sequence.

[0027] In a possible implementation, adjacent two second battery cells are connected by a connecting piece, and the connecting piece is arranged in the mounting beam.

[0028] In a possible implementation, the battery module further includes a sampling circuit board, which is disposed in the mounting beam.

[0029] In a possible implementation, the battery pack cover plate includes a plurality of plate bodies. The mounting beam divides the accommodation cavity into a plurality of parts, and the plate bodies correspond to the accommodation cavities. The plurality of plate bodies are respectively disposed to cover the corresponding accommodation cavities.

[0030] In a possible implementation, the battery pack is adapted to be connected to the vehicle body chassis. The battery pack further includes a chassis frame, which is disposed outside the battery pack tray and is used to connect the battery pack tray to the vehicle body chassis.

[0031] On the other hand, the present application provides an electrical device, including the above-mentioned battery pack.

[0032] For the battery pack tray, battery pack and electrical device provided by the present application, an installation part is provided on the mounting beam in the battery pack tray. Connecting the seat in the vehicle to the installation part of the mounting beam cancels the traditional seat mounting beam, integrates the whole vehicle body with the battery pack, reduces the installation height of the seat mounting beam occupying the seat in the vehicle, reduces the thickness of the vehicle chassis, provides a greater height for the interior space of the vehicle, thereby reducing the sitting height of the occupants and enhancing the space of the interior occupant compartment of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0034] Figure 1 It is a schematic structural diagram of the battery pack provided by the embodiment of the present application;

[0035] Figure 2 For Figure 1 It is an internal layout schematic diagram of the battery pack of the battery pack shown;

[0036] Figure 3 For Figure 2 It is an internal layout schematic diagram of the mounting beam of the battery pack shown;

[0037] Figure 4 For Figure 2 It is an internal layout schematic diagram of the wiring beam of the battery pack shown;

[0038] Figure 5 For Figure 2 It is a schematic structural diagram of the mounting beam and wiring beam of the battery pack shown;

[0039] Figure 6 It is Figure 2 a schematic structural diagram of the installation beam of the battery pack shown

[0040] Description of the reference numerals in the drawings:

[0041] 100 - Battery pack; 10 - Chassis frame; 11 - Side beam; 20 - Battery module; 21 - First battery module; 211 - First battery cell; 212 - Explosion-proof valve; 24 - Connecting piece; 25 - Second battery module; 251 - Second battery cell; 30 - Battery pack tray; 31 - Installation beam; 311 - Exhaust groove; 312 - Partition; 313 - Mounting part; 32 - Accommodating cavity; 33 - Cable arranging beam; 331 - Cable arranging groove; 332 - Connecting row; 333 - Wiring hole; 40 - Battery pack cover plate; 41 - Plate body Specific embodiments

[0042] To make the objectives, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the accompanying drawings in the preferred embodiments of the present application. In the drawings, the same or similar reference numerals denote the same or similar components or components with the same or similar functions throughout. The described embodiments are some, but not all, of the embodiments of the present application. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and should not be construed as limiting the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts fall within the scope of protection of the present application. The embodiments of the present application will be described in detail below with reference to the drawings

[0043] In the description of the present application, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it may be a fixed connection or an indirect connection through an intermediate medium, and may be the internal connection of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances

[0044] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is the orientation or positional relationship based on the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present application

[0045] In the description and claims of this application and the above-mentioned drawings, the terms "first", "second", "third" (if any) are used to distinguish similar objects and do not necessarily describe a specific order or sequence.

[0046] In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or display comprising a series of steps or units need not be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or displays.

[0047] Currently, with the rapid development of new energy vehicles, more and more people choose new energy vehicles, and their market share has increased significantly. Therefore, the performance indicators such as lightweight, cost reduction, and optimized space layout of new energy vehicles are required to be higher and higher.

[0048] Since the power source of new energy vehicles is a battery pack, they are characterized by large weight and large volume. In order to ensure the stability of the vehicle body, the battery pack needs to be added to the bottom of the vehicle. When connecting to the vehicle body chassis, there is a characteristic that the chassis is thick, resulting in a high sitting position for the driver. The thick chassis and the high sitting position of the driver also cause problems such as limited interior space and inconvenient getting on and off for passengers.

[0049] After repeated thinking and verification, the inventor found that if the battery pack is arranged in the accommodation space of the vehicle body chassis, the vehicle body chassis and the battery pack are integrated, and the structure and functional components of the vehicle body chassis are integrated into the battery pack, and the structural components inside the battery pack act as the structural components of the vehicle body chassis, the high anti-torsion rigidity of the CTB structure can be fully utilized, the thickness dimension of the vehicle chassis can be effectively reduced, a greater height can be provided for the interior space of the vehicle, thereby reducing the sitting height of the occupants, increasing the space of the interior occupant compartment of the vehicle, and facilitating the getting on and off of passengers.

[0050] In view of this, the present application provides a battery pack tray. The battery pack tray is provided with an accommodation cavity, an installation beam is arranged in the accommodation cavity, and an installation part is arranged on the installation beam, and the installation part is suitable for installing a seat.

[0051] An installation part is arranged on the installation beam in the battery pack tray, and the seat in the vehicle is connected to the installation part of the installation beam, canceling the traditional seat installation beam, integrating the whole vehicle body and the battery pack, reducing the installation height of the seat installation beam in the vehicle, reducing the thickness of the vehicle chassis, providing a greater height for the interior space of the vehicle, thereby reducing the sitting height of the occupants and increasing the space of the interior occupant compartment of the vehicle.

[0052] The content of the present application will be described in detail below with reference to the drawings, so that those skilled in the art can understand the content of the present application more clearly and in detail.

[0053] Figure 1 It is a schematic structural diagram of the battery pack provided by the embodiment of the present application. Figure 2 is Figure 1 a schematic internal layout diagram of the battery pack of the battery pack shown. Figure 3 is Figure 2 a schematic internal layout diagram of the mounting beam of the battery pack shown. Figure 4 is Figure 2 a schematic internal layout diagram of the wiring beam of the battery pack shown. Figure 5 is Figure 2 a schematic structural diagram of the mounting beam and the wiring beam of the battery pack shown. Figure 6 is Figure 2 a schematic structural diagram of the mounting beam of the battery pack shown.

[0054] As Figure 1 shown, a battery pack tray 30 provided by an embodiment of the present application is used in the battery pack 100. The battery pack 100 includes a battery module 20, a battery pack tray 30, and a battery pack cover plate 40. The battery pack tray 30 is adapted to be connected to the vehicle body chassis. The battery module 20 is disposed in the battery pack tray 30. The battery pack cover plate 40 covers the battery pack tray 30.

[0055] In a possible implementation manner, the battery pack 100 is adapted to be connected to the vehicle body chassis. The battery pack 100 further includes a chassis frame 10, and the chassis frame 10 is disposed between the battery pack tray 30 and the vehicle body chassis to connect the battery pack tray 30 and the vehicle body chassis.

[0056] The chassis frame 10 is a structural member for improving the torsional stiffness of the battery pack 100 or applying pressure (to a solid-state or semi-solid-state battery pack).

[0057] The chassis frame 10 is locked and connected to the vehicle body chassis and the battery pack tray 30 respectively. On the one hand, it improves the torsional stiffness of the battery pack 100 and the vehicle body. On the other hand, for a solid-state or semi-solid-state battery, it can also apply pressure to the battery to ensure the performance of the battery.

[0058] The chassis frame 10 includes a plurality of side beams 11. The side beams 11 are respectively connected to the battery pack tray 30, thereby connecting the battery pack tray 30 and the vehicle body chassis.

[0059] In a possible implementation manner, the side beam 11 includes a front side beam, a rear side beam, and two side side beams. The two side side beams are arranged in parallel. The front side beam is respectively connected to one end of the two side side beams, and the rear side beam is respectively connected to the other end of the two side side beams.

[0060] In a possible implementation, the front beam and the rear beam are parallel to each other and perpendicular to the side beam. That is, the front beam and the rear beam extend along the first direction x respectively, and the side beam extends along the second direction y. Among them, the first direction x and the second direction y are perpendicular to each other.

[0061] The battery pack tray 30 is provided with a receiving cavity 32, and an installation beam 31 and a battery module 20 are arranged in the receiving cavity 32. The installation beam 31 is arranged in the receiving cavity 32 and is suitable for installing a seat. The battery module 20 is arranged in the receiving cavity 32. The battery pack cover plate 40 covers the receiving cavity 32.

[0062] In a possible implementation, the battery pack cover plate 40 can directly serve as the floor of the cockpit, thereby improving the utilization rate of the interior space of the vehicle.

[0063] The battery module 20 includes a first battery module 21. The installation beam 31 divides the receiving cavity 32 into multiple receiving cavities 32. The first battery module 21 is arranged in one of the receiving cavities 32.

[0064] By arranging the installation beam 31 in the receiving cavity 32, the thickness along the third direction z can be effectively reduced, at least reduced by 3 cm - 5 cm, providing a greater longitudinal height for the interior space of the vehicle.

[0065] Among them, the third direction z is perpendicular to the first direction x and the second direction y respectively.

[0066] In a possible implementation, the installation beam 31 is connected to the frame of the battery pack tray 30.

[0067] In a possible implementation, the installation beam 31 is perpendicular to the side beam and parallel to the front beam and the rear beam. That is, the installation beam 31 extends along the first direction x.

[0068] By arranging the installation beam 31 perpendicular to the side beam, it is convenient to install the seat on the installation beam 31.

[0069] In a possible implementation, there are two installation beams 31. The two installation beams 31 are arranged in parallel in the receiving cavity 32, thereby dividing the receiving cavity 32 into three. The two installation beams 31 are respectively used to install the front and rear row seats.

[0070] In a possible implementation, the battery pack tray 30 is further provided with a wiring beam 33. The wiring beam 33 is arranged in the receiving cavity 32 and is connected to the installation beam 31.

[0071] In a possible implementation, a connection row 332 is arranged in the wiring beam 33. The wiring beam 33 is provided with a wiring groove 331. The connection row 332 is arranged in the wiring groove 331 and is connected to the first battery module 21.

[0072] In a possible implementation, the flexible cable beam 33 is connected to the frame of the battery pack tray 30 and is also connected to the mounting beam 31.

[0073] In a possible implementation, the mounting beam 31 and the flexible cable beam 33 are fixedly connected by welding.

[0074] The design of the mounting beam 31 and the flexible cable beam 33 provides space for accessories on one hand, facilitating the arrangement of cables in the battery module 20. On the other hand, the flexible cable beam 33 is connected to the chassis frame 10 and the mounting beam 31, which can also improve the structural strength of the battery pack 100 and prevent deformation.

[0075] In a possible implementation, the flexible cable beam 33 is respectively connected to the front beam and the rear beam.

[0076] In a possible implementation, the flexible cable beam 33 is parallel to the side beam, and is perpendicular to the mounting beam 31, the front beam and the rear beam. That is, the flexible cable beam 33 extends along the second direction y.

[0077] In a possible implementation, the cable slot 331 is opened along the extension direction of the flexible cable beam 33.

[0078] By arranging the flexible cable beam 33 parallel to the side beam, it is convenient to arrange the connection rows 332 in the cable slot 331 of the flexible cable beam 33, so as to connect with components in the electrical equipment.

[0079] Such as Figure 2 and Figure 3 As shown, in a possible implementation, the first battery module 21 includes a plurality of first battery cells 211. Along the extension direction of the mounting beam 31, the plurality of first battery cells 211 are arranged in sequence. That is, the plurality of first battery cells 211 are sequentially arranged along the first direction x.

[0080] The battery module 20 further includes a connecting piece 24. The connecting piece 24 is used to connect two adjacent first battery cells 211, and the connecting piece 24 is arranged in the mounting beam 31.

[0081] In a possible implementation, along the first direction x, the connecting piece 24 sequentially connects the plurality of first battery cells 211, that is, connects the plurality of first battery cells 211 in series.

[0082] The connecting piece 24 is also used to connect with the connection row 332, so as to conduct the first battery module 21 to the outside.

[0083] In a possible implementation, the battery pack tray 30 is provided with a plurality of accommodation cavities 32 for respectively arranging a plurality of battery modules 20. Among them, the battery modules 20 can be battery modules 20 with different size specifications or battery modules 20 with the same size specification. The specific setting method and quantity are determined according to the design requirements.

[0084] In a possible implementation, the battery module 20 further includes a second battery module 25. The first battery module 21 and the second battery module 25 are respectively arranged in different accommodation cavities 32.

[0085] In a possible implementation, along the second direction y, the first battery module 21, the second battery module 25 and the first battery module 21 are sequentially arranged in three accommodation cavities 32. That is, the first battery module 21 and the second battery module 25 are respectively arranged on both sides of the mounting beam 31.

[0086] Since the specific size of the batteries in the battery module 20 is determined according to the size of the electrical equipment carried, and the mounting beam 31 for setting the seat also needs to be set separately according to different electrical equipment, the sizes of the batteries arranged in different accommodation cavities 32 are adjusted according to the actual vehicle model.

[0087] In a possible implementation, the first battery module 21 and the second battery module 25 can be battery cells with the same system but only different in size length, or battery cells with different systems and sizes.

[0088] In a possible implementation, the second battery module 25 includes a plurality of second battery cells 251. Along the extension direction of the mounting beam 31, the plurality of second battery cells 251 are sequentially arranged. That is, the plurality of second battery cells 251 are sequentially arranged along the first direction x.

[0089] Adjacent two second battery cells 251 are also connected by a connecting piece 24.

[0090] Please also refer to Figure 4 As shown, in a possible implementation, the mounting beam 31 is provided with exhaust holes, and the first battery cell 211 is provided with an explosion-proof valve 212. The explosion-proof valve 212 is correspondingly arranged with the exhaust holes.

[0091] In a possible implementation, an exhaust groove 311 is arranged inside the mounting beam 31, and the exhaust holes are communicated with the exhaust groove 311.

[0092] In a possible implementation, the second battery cell 251 is also provided with an explosion-proof valve 212, and the explosion-proof valve 212 is correspondingly arranged with the exhaust holes.

[0093] By arranging the explosion-proof valve 212 on the battery cell in the battery module 20 opposite to the exhaust hole and connecting the exhaust hole to the exhaust groove 311, when the battery gets out of control, the gas inside the battery cell rushes out of the explosion-proof valve 212, and the exhaust groove 311 can play a role in guiding the exhaust.

[0094] In a possible implementation manner, along the extending direction of the mounting beam 31, the exhaust groove 311 penetrates through the inside of the mounting beam 31.

[0095] The exhaust groove 311 that penetrates through the mounting beam 31 along the extending direction of the mounting beam 31 can act as a gas guiding function when the battery gets out of control, discharging the hot gas flow from both sides of the mounting beam 31 to prevent the hot gas flow from impacting the occupant compartment.

[0096] An exhaust port is provided at one end of the exhaust groove 311 of the mounting beam 31 away from the wiring beam 33, and there is a corresponding channel on the battery pack tray 30 for connecting the exhaust port to the outside of the tray for exhaust.

[0097] In a possible implementation manner, a partition 312 is provided inside the mounting beam 31, and the partition 312 is arranged in the exhaust groove 311. The partition 312 is used to divide the exhaust groove 311 into two parts to separate the batteries on both sides of the mounting beam 31.

[0098] The partition 312 can prevent the hot gas flow ejected from one side of the battery cell from directly impacting the battery cell on the opposite side when the battery gets out of control.

[0099] As Figure 6 shown, in a possible implementation manner, the mounting beam 31 adopts an inverted "mountain" - shaped structure design, with a partition 312 arranged in the middle, and the opening is convenient for the setting of the connecting piece 24.

[0100] Please refer to Figure 5 simultaneously. In a possible implementation manner, the mounting beam 31 is provided with a mounting part, and the mounting part is suitable for mounting a seat.

[0101] In a possible implementation manner, the seat is connected to the mounting part through a mounting member 313 so that the seat is connected to the mounting beam 31.

[0102] In a possible implementation manner, the seat is directly connected to the mounting part through the mounting member 313 so that the seat is adhesively connected to the mounting beam 31.

[0103] Among them, the seat and the mounting beam 31 can be directly adhesively connected by means of bolt connection, snap connection, plug - in connection, rivet connection, slide rail connection, etc.

[0104] In a possible implementation manner, a battery pack cover plate 40 is provided on the battery pack tray 30. The battery pack cover plate 40 covers the accommodation cavity 32 and the mounting beam 31. The mounting member 313 passes through the battery pack cover plate 40 to connect the seat to the mounting part.

[0105] That is, a battery pack cover plate 40 is provided at an intermediate interval between the seat and the mounting beam 31, and the seat and the mounting beam 31 are connected by the mounting member 313 passing through the battery pack cover plate 40.

[0106] In a possible implementation manner, the mounting portion is at least one of a mounting hole and a mounting groove. The mounting member 313 is at least one of a mounting bolt and a mounting screw.

[0107] The mounting member 313 can be a connecting bolt, a screw, a clamping structure, etc. The mounting portion can be structures such as a mounting hole, a mounting groove, a threaded hole, a clamping groove, etc. opened on the mounting beam 31.

[0108] The mounting member 313 is used to pass through the mounting portion to fix the seat to the mounting beam 31.

[0109] Fixing the seat through the mounting member 313 improves the connection stability between the seat and the mounting beam 31.

[0110] In a possible implementation manner, the mounting member 313 can also connect the seat and the mounting beam 31 by welding or bonding, etc.

[0111] In a possible implementation manner, along the second direction y, the first battery module 21, the mounting beam 31, the wiring beam 33 and the second battery module 25 are symmetric left and right, and the mounting members 313 are symmetrically arranged on the mounting beam 31, so as to facilitate the layout design of components in the electrical equipment.

[0112] In a possible implementation manner, the wiring beam 33 is provided with a wiring hole 333, and one end of the wiring hole 333 facing the mounting beam 31 is provided and communicated with the wiring groove 331. The wiring hole 333 is used to communicate the wiring groove 331 with the exhaust groove 311, so as to facilitate the threading of the connecting piece 24. The connecting piece 24 passes through the wiring hole 333 and is connected to the connecting row 332 arranged in the wiring groove 331.

[0113] In a possible implementation manner, a sealing member is provided on the wiring beam 33, and the sealing member is arranged on the wiring hole 333, and the sealing member is used to seal the wiring hole 333.

[0114] The wiring hole 333 is sealed by the sealing member, so as to prevent the wiring groove 331 of the wiring beam 33 from communicating with the exhaust groove 311 in the mounting beam 31, and prevent the hot flow gas discharged into the exhaust groove 311 from flushing into the wiring groove 331 when the battery gets out of control, causing electrical interference and corrosion to the wiring structures such as the connecting row 332 in the wiring groove 331, so that when a thermal runaway occurs, the hot flow gas exhausts along the exhaust groove 311 to the outside away from the wiring beam 33. And, it can prevent the hot flow from impacting other parts of the electrical equipment along the wiring groove 331.

[0115] In a possible implementation, the battery module 20 further includes a sampling circuit board. The sampling circuit board is disposed in the mounting beam 31. The sampling circuit board may include a BIC (Battery Information Collector), which may be an fpc (flexible printed circuit board) or the like, for collecting information such as battery voltage and current, and may also monitor temperature and pressure inside the battery.

[0116] Among them, the BIC may include temperature, voltage, UART / SPI communication, Hall sensors, etc.

[0117] In a possible implementation, the battery module 20 further includes a BMS (Battery Management System). The BMS is disposed in the mounting beam 31.

[0118] Specifically, the BMS and the sampling circuit board are respectively disposed in the exhaust groove 22.

[0119] The opening of the exhaust groove 22 facilitates the installation of the BMS and the sampling circuit board.

[0120] In a possible implementation, along the opening direction of the accommodation cavity 32, the height of the first battery module 21 is the same as the height of the mounting beam 31. That is, along the third direction z, the first battery module 21 is flush with the surface of the mounting beam 31.

[0121] In a possible implementation, the battery pack tray 30 is provided with a cooling flow channel. The cooling flow channel is used to cool the battery module 20, thereby improving the working efficiency of the battery module 20.

[0122] In a possible implementation, the battery pack cover 40 includes a plurality of plate bodies 41. The plate bodies 41 correspond to the accommodation cavities 32, and the plurality of plate bodies 41 respectively cover the corresponding accommodation cavities 32.

[0123] Specifically, by covering the corresponding accommodation cavities 32 with the plate bodies 41 respectively, the battery modules in different accommodation cavities 32 are sealed. When it is necessary to replace or repair the battery, only the corresponding plate body 41 needs to be disassembled, which improves the working efficiency.

[0124] The plate body 41 does not cover the mounting beam 31. At this time, the setting of the plate body 41 can also enable the mounting member 313 to be directly connected to the mounting beam 31, thereby improving the stability of the seat installation.

[0125] In a possible implementation, the battery pack cover plate 40 includes a plate body 41, and the plate body 41 covers the openings of a plurality of accommodating cavities 32. By using a plate body 41 to seal the openings of the entire accommodating cavities 32 of the battery pack tray 30, at this time, the plate body 41 covers the mounting beam 31, mounting holes are provided in the corresponding areas of the plate body 41 and the mounting beam 31, and the mounting member 313 passes through the mounting holes in the plate body 41 and is arranged on the mounting beam 31, then the installation of the seat can be realized. At the same time, in this implementation, the height of the corresponding mounting beam 31 can also be the same as the height of the battery module 20.

[0126] In a possible implementation, when the plate body 41 covers the accommodating cavity 32, sealing between the plate body 41 and the accommodating cavity 32 can be achieved by means of adhesives, welding, or adding sealing strips, etc.

[0127] In a possible implementation, along the first direction x, the width dimension range of the wiring beam 33 is 2 cm - 5 cm.

[0128] Since the wiring beam 33 is mainly used for the layout of connecting rows 332, therefore, it requires a certain space for the installation of the connecting rows 332. If the width of the wiring beam 33 is less than 2 cm, it is not convenient for the installation of the connecting rows 332; if the width of the wiring beam 33 is greater than 5 cm, it will occupy too much accommodating space 12, thereby causing a reduction in the battery volume, which is not conducive to improving the battery life of the electrical equipment.

[0129] In a possible implementation, along the second direction y, the width dimension range of the mounting beam 31 is 4 cm - 6 cm.

[0130] Since the mounting beam 31 is used to connect both the connecting piece 24 and the battery cells, and also to install the BMS and BIC, therefore, the size of the mounting beam 31 is larger than that of the wiring beam 33. If the width of the mounting beam 31 is less than 4 cm, it is not convenient for the installation of the BMS and BIC; if the width of the mounting beam 31 is greater than 6 cm, it will occupy too much accommodating space 12, thereby causing a reduction in the battery volume, which is not conducive to improving the battery life of the electrical equipment.

[0131] The vehicle interior chassis of the passenger compartment is integrally fused with the battery pack. The battery pack cover plate 40 serves as the floor of the passenger compartment, and at the same time, the mounting beam 31 of the battery pack 100 serves as the beam of the vehicle body chassis. Directly installing the passenger compartment seat on the mounting beam 31 of the battery pack 100 not only improves the longitudinal space inside the vehicle, but also improves the connection strength of the battery pack 100, enhancing the comprehensive performance of the electric vehicle.

[0132] The battery pack 100 provided by the embodiment of the present application includes a battery module 20, a battery pack tray 30, and a battery pack cover plate 40; the battery pack tray 30 is adapted to be connected to the vehicle body chassis, and an installation beam 31 and a receiving cavity 32 are provided in the battery pack tray 30. The installation beam 31 is disposed in the receiving cavity 32 and is adapted to install a seat; the battery module 20 is disposed in the receiving cavity 32 and includes a first battery module 21; the battery pack cover plate 40 covers the receiving cavity 32.

[0133] By disposing the battery pack 100 in the receiving space of the vehicle body chassis, that is, performing a complete integrated design of the vehicle body chassis and the battery pack 100, combining the beam body of the vehicle body chassis with the battery pack 100, and using the installation beam 31 inside the battery pack 100 as a structural member of the vehicle body chassis, the structural functional members of the vehicle body chassis are integrated with the battery pack 100, giving full play to the high anti-torsion rigidity of the CTB structure, integrating the whole vehicle body and the battery pack, reducing the thickness of the vehicle chassis, providing a greater height for the interior space of the vehicle, thereby reducing the sitting height of the occupants and enhancing the space of the interior occupant compartment of the vehicle.

[0134] In addition, the embodiment of the present application also provides an electrical device, including an electrical device and the above-mentioned battery pack 100, and the battery pack 100 is used to provide electrical energy for the electrical device.

[0135] Among them, the specific structure, working principle, and function of the battery pack 100 have been described in detail in the foregoing embodiments, and will not be elaborated herein.

[0136] By adopting the battery pack 100, its strength can replace the off-road beam, and even the beam of the off-road vehicle can be cancelled. It can not only provide sufficient strength for the vehicle in off-road conditions, but also provide sufficient comfort for the vehicle in urban conditions, breaking through the incompatibility between off-road and urban, integrating off-road and SUV, improving the strength and safety of the SUV, and enhancing the handling and comfort of the off-road vehicle.

[0137] The electrical device in the embodiment of the present application can be a vehicle. For example, the vehicle can be a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle, etc. Correspondingly, the electrical device can be a driving mechanism of the vehicle or a control system of the vehicle.

[0138] In addition, the electrical device can also be other devices, such as flying cars, electric ships, new energy engineering vehicles, etc.

[0139] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery pack tray, characterized in that: The battery pack tray (30) is provided with a receiving cavity (32), a mounting beam (31) is provided in the receiving cavity (32), and a mounting portion is provided on the mounting beam (31), wherein the mounting portion is suitable for mounting a seat.

2. The battery pack tray according to claim 1, characterized in that: The seat is connected to the mounting portion via a mounting member (313), so that the seat is connected to the mounting beam (31).

3. The battery pack tray according to claim 2, characterized in that: The seat is directly connected to the mounting portion via the mounting member (313), so that the seat is fitted and connected to the mounting beam.

4. The battery pack tray according to claim 2, characterized in that: The accommodating cavity (32) and the mounting beam (31) are both suitable for being covered by a battery pack cover plate (40), and the mounting member (313) passes through the battery pack cover plate (40) to connect the seat to the mounting portion.

5. The battery pack tray according to any one of claims 2 to 4, characterized in that: The mounting portion is at least one of a mounting hole and a mounting groove; And / or, the mounting member (313) is at least one of a mounting bolt and a mounting screw.

6. The battery pack tray according to claim 1, characterized in that: The battery pack tray (30) is further provided with a wiring beam (33), wherein the wiring beam (33) is arranged in the accommodating cavity (32) and connected to the mounting beam (31).

7. The battery pack tray according to claim 6, characterized in that: The wiring beam (33) is provided with a connection row (332), and the connection row (332) is suitable for connecting to a battery module (20).

8. The battery pack tray according to claim 7, characterized in that: The wiring beam (33) is provided with a wiring hole (333), the wiring hole (333) is arranged towards one end of the mounting beam (31), and the wiring hole (333) is used for connecting wires to pass through, so as to connect the connecting row (332) to the battery module (20).

9. The battery pack tray according to claim 8, characterized in that: The cable routing beam (33) is provided with a sealing member, and the sealing member is used to seal the cable routing hole (333).

10. The battery pack tray according to claim 1, characterized in that: A plurality of accommodating cavities (32) are provided in the battery pack tray (30), and the plurality of accommodating cavities (32) are suitable for arranging a plurality of battery modules (20) respectively.

11. The battery pack tray according to claim 1, characterized in that: The mounting beam (31) is provided with an exhaust hole, and the exhaust hole is suitable for being arranged corresponding to the explosion-proof valve of the battery cell in the battery module (20).

12. The battery pack tray according to claim 11, characterized in that: An exhaust groove (311) is provided in the mounting beam (31) along the extension direction of the mounting beam (31), the exhaust groove (311) runs through the mounting beam (31), and the exhaust hole is in communication with the exhaust groove (311).

13. The battery pack tray according to claim 12, characterized in that: A partition plate (312) is provided in the mounting beam (31), and the partition plate (312) is provided in the exhaust groove (311) and is used to separate the battery modules (20) on both sides of the mounting beam (31).

14. A battery pack, characterized in that: include: The battery pack tray according to any one of claims 1 to 13; A battery module (20), the battery module (20) being arranged in the accommodating cavity (32); A battery pack cover plate (40), wherein the battery pack cover plate (40) covers the accommodating cavity (32).

15. The battery pack according to claim 14, characterized in that: The battery module (20) comprises a first battery module (21), wherein the first battery module (21) comprises a plurality of first battery cells (211), and the plurality of first battery cells (211) are arranged in sequence along an extension direction of the mounting beam (31).

16. The battery pack according to claim 15, characterized in that: Two adjacent first battery cells (211) are connected via a connecting piece (24), and the connecting piece (24) is arranged in the mounting beam (31).

17. The battery pack according to claim 15, characterized in that: The battery module (20) further comprises a second battery module (25); a plurality of accommodating cavities (32) are provided in the battery pack tray (30); the first battery module (21) and the second battery module (25) are respectively arranged in different accommodating cavities (32).

18. The battery pack according to claim 17, characterized in that: The second battery module (25) comprises a plurality of second battery cells (251), and the plurality of second battery cells (251) are arranged in sequence along the extension direction of the mounting beam (31).

19. The battery pack according to claim 18, characterized in that: Two adjacent second battery cells (251) are connected via a connecting sheet (24), and the connecting sheet (24) is arranged in the mounting beam (31).

20. The battery pack according to any one of claims 14 to 19, characterized in that: The battery module (20) further comprises a sampling circuit board, wherein the sampling circuit board is arranged in the mounting beam (31).

21. The battery pack according to any one of claims 14 to 19, characterized in that: The battery pack cover plate (40) comprises a plurality of plate bodies (41); the mounting beam (31) divides the accommodating cavity (32) into a plurality of plate bodies (41); the plate bodies (41) correspond to the accommodating cavities (32); and the plurality of plate bodies (41) are respectively covered in the corresponding accommodating cavities (32).

22. The battery pack according to any one of claims 14 to 19, characterized in that: The battery pack is suitable for being connected to a vehicle chassis, and the battery pack further comprises a chassis frame (10), wherein the chassis frame (10) is arranged outside the battery pack tray (30), and the chassis frame (10) is used to connect the battery pack tray (30) and the vehicle chassis.

23. An electrical equipment, characterized in that: Comprising a battery pack (100) as claimed in any one of claims 14 to 22.

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