Battery tray, battery pack and vehicle

Abstract

The utility model relates to a battery tray, a battery pack and a vehicle, the battery tray comprises a tray body, the tray body comprises a frame and a bottom plate, the frame and the bottom plate enclose an accommodating cavity for accommodating a battery pack, the frame comprises a corner cut part, the corner cut part is provided with an exhaust hole, and an exhaust channel communicated with the exhaust hole and the accommodating cavity is formed in at least part of the frame. When a battery pack in the accommodating cavity is subjected to thermal runaway, the battery tray enables gas in the accommodating cavity to be directly exhausted to the outside through the exhaust channel and the exhaust holes of the corner cutting part without entering a cavity body of the battery tray, so that the overall safety performance is improved.

Description

Technical Field

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

[0002] As an energy storage device, the power battery pack is a core component of hybrid vehicles and electric vehicles. The power battery pack is mainly composed of multiple battery packs and battery trays. The battery tray is installed at the bottom of the car, and the cover plate is sealed and connected to the battery tray to form a closed space for accommodating the battery packs. In order to prevent explosion accidents, an explosion-proof valve is usually provided on the battery tray. When the air pressure in the closed space increases to a certain level, the explosion-proof valve opens and the internal airflow is discharged through the explosion-proof valve.

[0003] In the related art, a partition beam is used to separate the functional cavity inside the frame into a first cavity for setting up a distribution box and a second cavity for communicating with the airflow channel, and an explosion-proof valve for discharging the airflow of the second cavity is provided on the side beam to achieve exhaust. The gas generated by thermal runaway in the battery cavity cannot be exhausted directly (it needs to pass through the functional cavity), and it is easy to affect other external electrical components during exhaust, so the safety is not high. Utility Model Content

[0004] The purpose of the present disclosure is to provide a battery tray, a battery pack and a vehicle, which battery tray allows the gas in the accommodating cavity to be discharged directly to the outside through the exhaust channel and the exhaust holes in the cut corners without entering the cavity (distribution cavity) of the battery tray, thereby improving the overall safety performance and at least partially solving related technical problems.

[0005] In order to achieve the above objectives, the present disclosure provides a battery tray in a first aspect, comprising:

[0006] The tray body includes a frame and a bottom plate, the frame and the bottom plate enclose a storage cavity for accommodating a battery pack, the frame includes a corner cut portion, the corner cut portion is provided with an exhaust hole, and at least a portion of the frame is formed with an exhaust channel connecting the exhaust hole and the storage cavity.

[0007] Optionally, the frame and the bottom plate further enclose a power distribution cavity for accommodating electrical components, the power distribution cavity and the accommodating cavity are separated by a crossbeam, and the power distribution cavity is located on one side of the accommodating cavity in the first direction;

[0008] The corner cut portion is located on at least one side of the power distribution cavity in the second direction;

[0009] The first direction is perpendicular to the second direction.

[0010] Optionally, the frame includes two side beams extending along the first direction and spaced apart in the second direction, and a front beam and a rear beam extending along the second direction and spaced apart in the first direction;

[0011] The front beam and at least one of the side beams are connected via the cut corner portion.

[0012] Optionally, the front beam, the cross beam and the two side beams enclose the power distribution cavity;

[0013] From the cross beam toward the front beam, the cut corner portion is arranged to be inclined inwards.

[0014] Optionally, the battery tray further comprises at least one crossbeam disposed in the accommodating cavity and extending along the second direction, wherein the crossbeam divides the accommodating cavity into a plurality of sub-cavities that are independently arranged from each other;

[0015] The multiple sub-cavities are respectively connected to the exhaust holes through the multiple exhaust channels arranged in the side beams, and each side beam is formed with a first exhaust port connecting the sub-cavity and the exhaust channel on the side wall close to the sub-cavity in the second direction.

[0016] Optionally, each of the sub-cavities corresponds to and is in communication with at least one of the exhaust passages of the side beam.

[0017] Optionally, the battery tray further includes an explosion-proof valve assembly, which is disposed at the corner cut portion and communicated with the exhaust hole for exhausting the airflow in the exhaust channel.

[0018] Optionally, the explosion-proof valve assembly includes an explosion-proof valve and a cover body disposed outside the explosion-proof valve;

[0019] The cover body is formed with a second exhaust port, and the second exhaust port allows the exhausted gas to avoid external electrical components.

[0020] Optionally, the exhaust hole includes a collecting channel and a transition channel;

[0021] One end of the collecting channel is connected to the exhaust channel, and the other end is connected to the valve body channel of the explosion-proof valve through the transition channel, so that the gas in the exhaust channel can enter the cover body through the valve body channel of the explosion-proof valve and can be discharged from the second exhaust port.

[0022] According to a second aspect of the present disclosure, a battery pack is provided, comprising the above-mentioned battery tray.

[0023] Optionally, the battery pack further includes a cover plate assembly, and the cover plate assembly is used to seal an end of the frame away from the bottom plate.

[0024] Optionally, the cover plate assembly includes a sealing cover and an upper cover connected to the frame, and the upper cover is used to seal the accommodating cavity and the power distribution cavity of the battery tray;

[0025] The upper cover is provided with an opening communicating with the power distribution cavity, and the sealing cover is sealed and connected to the opening.

[0026] Optionally, the cover plate assembly includes a sealing cover and an upper cover connected to the frame, the upper cover seals the accommodating cavity of the battery tray, and the sealing cover seals the power distribution cavity of the battery tray.

[0027] Optionally, the accommodating cavity includes a plurality of sub-cavities;

[0028] The battery pack further comprises a plurality of battery packs, and each of the sub-cavities is provided with one of the battery packs.

[0029] Optionally, a filling piece is provided between the battery pack and the side beam of the frame, and the length of the filling piece is smaller than the length of the battery pack.

[0030] According to a third aspect of the present disclosure, a vehicle is also provided, comprising the above-mentioned battery pack.

[0031] Optionally, the second exhaust port of the cover body of the explosion-proof valve assembly is arranged toward the ground.

[0032] Through the above technical solution, that is, the battery tray disclosed in the present invention, a corner portion is provided on the frame of the tray body, and an exhaust hole is provided on the corner portion, and the accommodating cavity is connected to the exhaust hole through an exhaust channel in at least part of the frame. The corner portion provides an installation space for the explosion-proof valve assembly. In addition, when thermal runaway occurs in the battery pack in the accommodating cavity, the gas in the accommodating cavity can be directly discharged to the outside through the exhaust channel and the exhaust hole in the corner portion without entering the cavity of the battery tray, thereby improving the overall safety performance.

[0033] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0035] Figure 1 is a structural diagram of a battery pack provided in some embodiments of the present disclosure.

[0036] Figure 2 is a structural diagram of a battery pack provided in some embodiments of the present disclosure, in which the cover plate assembly is hidden.

[0037] Figure 3is a top view of a battery pack provided in some embodiments of the present disclosure, in which the cover plate assembly is hidden.

[0038] Figure 4 is a structural diagram of a battery tray provided in some embodiments of the present disclosure.

[0039] Figure 5 This is a top view from another perspective of the battery pack provided in some embodiments of the present disclosure, in which the cover assembly is hidden.

[0040] Figure 6 is based on Figure 5 Enlarged view of part I in .

[0041] Figure 7 is based on Figure 5 AA section view in.

[0042] Figure 8 is based on Figure 7 Enlarged view of Part II in .

[0043] Fig. 9 is based on Figure 6 BB section view in.

[0044] Fig.10 is based on Figure 6 CC section view in.

[0045] Fig.11 is a cross-sectional view of a corner cut portion of a battery tray provided in some embodiments of the present disclosure.

[0046] Description of Reference Numerals

[0047] 10-battery tray; 100-tray body; 101-accommodation cavity; 1011-sub-cavity; 102-distribution cavity; 110-frame; 111-side beam; 1111-exhaust channel; 1112-first exhaust port; 112-front beam; 113-rear beam; 114-cross beam; 115-corner cutting portion; 1151-collecting channel; 1152-transition channel; 120-bottom plate; 130-explosion-proof valve assembly; 131-explosion-proof valve; 132-cover body; 1321-second exhaust port; 1322-cover body channel; 140-cover plate assembly; 141-upper cover; 142-sealing cover; 150-filler;

[0048] 20-battery pack;

[0049] X-first direction; Y-second direction; Z-third direction. DETAILED DESCRIPTION

[0050] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0051] In the present disclosure, unless otherwise stated, directional words such as "up, down, left, right" generally refer to up, down, left, and right relative to the accompanying drawings; "inside and outside" refer to the inside and outside of the outline of the corresponding component; "far and near" refer to the corresponding structure or the corresponding component being far away from or close to another structure or component. Among them, X represents the first direction, Y represents the second direction, and Z represents the third direction. In addition, the terms "first", "second", etc. used in the present disclosure are to distinguish one element from another, and do not have order and importance. In addition, in the following description, when referring to the drawings, unless otherwise explained, the same figure numbers in different drawings represent the same or similar elements. The above definitions are only used to explain and illustrate the present disclosure and should not be construed as limitations on the present disclosure.

[0052] In order to be able to discharge the gas in the battery tray in time when thermal runaway occurs in the battery pack, in the related art, the battery tray includes a functional cavity defined by a bottom plate, a side beam and a cross beam, and a plurality of receiving cavities for receiving battery cells. The functional cavity is arranged on one side of the plurality of receiving cavities, that is, the plurality of receiving cavities and the functional cavity are arranged side by side in sequence along the length direction of the tray battery. The functional cavity and the plurality of receiving cavities are independent of each other. A partition beam is arranged in the functional cavity to separate the functional cavity into a first cavity for setting up a distribution box and a second cavity for communicating with the airflow channel, and an explosion-proof valve for discharging the airflow of the second cavity is arranged on the side beam to achieve exhaust. The gas generated by thermal runaway in the battery cavity cannot be exhausted directly (it needs to pass through the functional cavity), and it is easy to affect other external electrical components during exhaust, and the safety is not high.

[0053] The purpose of the present disclosure is to provide a battery tray 10, a battery pack and a vehicle, wherein the battery tray 10 allows the gas in the accommodating cavity 101 to be discharged directly to the outside through the exhaust channel 1111 and the exhaust holes of the corner cut portion 115 without entering the cavity (functional cavity) of the battery tray 10, thereby improving the overall safety performance.

[0054] In order to achieve the above purpose, Figures 1 to 11 As shown, an embodiment of the present disclosure provides a battery tray 10, which includes a tray body 100, and the tray body 100 includes a frame 110 and a bottom plate 120, the frame 110 and the bottom plate 120 enclose a receiving cavity 101 for receiving a battery pack, the frame 110 includes a corner cut portion 115, and the corner cut portion 115 is provided with an exhaust hole (not shown in the figure), and at least a portion of the frame 110 is formed with an exhaust channel connecting the exhaust hole and the receiving cavity 101.

[0055] The above technical solution is achieved by providing a corner cut portion 115 on the frame 110 of the tray body 100, and providing an exhaust hole on the corner cut portion 115, and connecting the accommodating cavity 101 with the exhaust hole through an exhaust channel 1111 in at least part of the frame 110. The corner cut portion 115 provides an installation space for the explosion-proof valve assembly 130. In addition, when the battery pack 20 in the accommodating cavity 101 has thermal runaway, the gas in the accommodating cavity 101 can be directly discharged to the outside through the exhaust channel 1111 and the exhaust hole of the corner cut portion 115 without entering the cavity (distribution cavity 102) of the battery tray 10, thereby improving the overall safety performance.

[0056] It should be noted that the corner cutter 115 may be a recessed portion formed on the frame 110 and facing the inner direction of the frame 110. For example, when the frame 110 is configured as a rectangular structure, it may be arranged at least one of the four corners of the rectangular structure. It is understandable that, in order to adapt to the frame 110 having the corner cutter 115, the bottom plate 120 may be configured to correspond to the edge shape of the frame 110, that is, the projections of the frame 110 and the bottom plate 120 in the horizontal plane are corresponding. For example, with respect to the rectangular bottom plate, in order to adapt to the corner cutter, a corresponding corner cutter structure may also be provided on the bottom plate.

[0057] In some embodiments, the frame 110 and the bottom plate 120 also enclose a distribution cavity 102 for accommodating electrical devices. The distribution cavity 102 and the accommodating cavity 101 are separated by a crossbeam 114, and the distribution cavity 102 is located on one side of the first direction X of the accommodating cavity 101; the corner cut portion 115 is located on at least one side of the distribution cavity 102 in the second direction Y; wherein the first direction X is perpendicular to the second direction Y.

[0058] Among them, the first direction X can be the front and rear direction of the vehicle, and the second direction Y can be the width direction of the vehicle. Therefore, the distribution chamber 102 can be located on the front side of the accommodating chamber 101, and the cut corner portion 115 can be arranged on at least one side of the outside of the distribution chamber 102 corresponding to the second direction Y. Therefore, compared with the solution in the related art that the explosion-proof valve 131 is arranged inside the distribution chamber 102, the exhaust airflow of the explosion-proof valve 131 can be directly discharged to the outside to avoid affecting the electrical components inside the distribution chamber 102.

[0059] The frame 110 can be constructed using any suitable structure, such as Figure 4As shown, in some embodiments of the present disclosure, the frame 110 may include two side beams 111 extending along the first direction X and spaced apart in the second direction Y, and a front beam 112 and a rear beam 113 extending along the second direction Y and spaced apart in the first direction X; the front beam 112 and at least one side beam 111 are connected through a cut corner portion 115. The two side beams 111 extend along the first direction X and are spaced apart in the second direction Y, and the front beam 112 and the rear beam 113 are located at the front and rear ends of the two side beams 111 in the first direction X, and the front beam 112 and the side beam 111 are connected through a cut corner portion 115 provided therebetween, and the explosion-proof valve assembly 130 is provided at the cut corner portion 115. It is worth noting that the exhaust channel 1111 can be set inside the side beam 111, and can also be set inside the front beam 112 and the rear beam 113. It needs to be able to communicate with the accommodating cavity 101 and transfer the gas in the accommodating cavity 101 to the explosion-proof valve assembly 130 through the exhaust channel 1111. Because the exhaust channel 1111 is arranged inside the frame 110, it does not need to pass through the inside of the battery pack (such as the cross beam 114), and therefore, the safety performance of the battery pack can be improved.

[0060] Considering that multiple battery packs 20 will be arranged in the battery pack, in order to further improve the safety of the battery pack. In some embodiments, the battery tray 10 also includes at least one crossbeam 114 arranged in the accommodating cavity 101 and extending along the second direction Y, the crossbeam 114 divides the accommodating cavity 101 into multiple sub-cavities 1011 arranged independently of each other, and multiple battery packs 20 are respectively arranged inside the sub-cavities 1011, and each sub-cavity 1011 is relatively independent, and multiple sub-cavities 1011 are respectively connected to the protective valve assembly through multiple exhaust channels 1111 arranged on the side beam 111, and the sub-cavity 1011 can correspond to and communicate with at least one exhaust channel 1111 of the side beam 111, wherein the number of sub-cavities 1011 can correspond one-to-one with the number of exhaust channels 1111 of a side beam 111, that is, each sub-cavity 1011 can be connected to the exhaust hole through an exhaust channel 1111 of a side beam 111. The accommodating cavity 101 is divided into a plurality of independent sub-cavities 1011 by the cross beam 114. When a fire occurs in the battery pack 20 in each sub-cavity 1011, the expanding gas therein can be transferred to the explosion-proof valve assembly 130 through the corresponding exhaust channel 1111 and discharged without affecting other sub-cavities 1011, thereby improving the overall safety of the battery pack.

[0061] It should be noted that each sub-cavity 1011 can also be connected to the exhaust hole through a plurality of exhaust channels 1111 on a side beam 111, so as to achieve the purpose of exhausting the gas (ie, transporting the gas to the explosion-proof valve 131 and then exhausting the gas).

[0062] like Figure 2 and Figure 4As shown, in some embodiments, there may be two cross beams 114 arranged in the accommodating cavity 101, and they are arranged at intervals in the first direction X. The two cross beams 114 divide the accommodating cavity 101 into three independent sub-cavities 1011. In order to improve the safety of the battery pack, the exhaust channel 1111 is not arranged inside the cross beam 114, and the exhaust channel 1111 is only arranged on the side beam 111. The side beam 111 is provided with a first exhaust port 1112 on the inner wall corresponding to each sub-cavity 1011, which is connected to the corresponding exhaust channel 1111. Therefore, when the battery pack 20 in a sub-cavity 1011 is out of control, the generated gas is only inside the sub-cavity 1011, and is discharged to the explosion-proof valve assembly 130 through the exhaust channel 1111 connected thereto, so as to avoid the gas from flowing into other sub-cavities 1011.

[0063] It should be noted that the battery packs 20 in two adjacent sub-cavities 1011 need to be connected through an electrical connector (for example, a bridging aluminum bar). Here, a corresponding incision needs to be set on the beam 114 for the power supply connector to pass through. At the same time, a seal can be set at the incision, and the electrical connector and the seal, or the seal and the edge of the notch can be sealed by glue injection to achieve a sealing effect between each sub-cavity 1011 to avoid gas cross-cavity.

[0064] It is understandable that the two cross beams 114 are merely exemplary, and three cross beams 114 or more cross beams 114 may be provided to separate the accommodating cavity 101 into more independent sub-cavities 1011. Of course, a longitudinal beam extending along the first direction X may be provided between the two side beams 111, so as to separate the accommodating cavity 101 into two cavity groups along the second direction Y, each cavity group including a plurality of sub-cavities 1011, and the sub-cavities 1011 may be provided with a first exhaust port 1112 and an exhaust channel 1111 on the side wall corresponding to the side beam 111, so as to achieve exhaust.

[0065] In some embodiments, the front beam 112, the cross beam 114 and the two side beams 111 form a power distribution chamber 102; the corner cutout 115 is arranged in an inwardly inclined manner from the cross beam 114 to the front beam 112. The power distribution chamber 102 is arranged at the front end of the entire battery tray 10, and can be surrounded by the front beam 112, the two side beams 111 and a cross beam 114 closest to the front beam 112, and the corner cutout 115 is arranged in an inclined manner, that is, it is inclined inwardly from the side beam 111 to the front beam 112.

[0066] Optionally, a first exhaust port 1112 communicating with the exhaust channel 1111 is formed on the side wall of the side beam in the second direction Y of each sub-cavity 1011 (i.e., the side wall close to the sub-cavity 1011), and the plurality of first exhaust ports 1112 are respectively communicated with the exhaust holes of the corner cut portion 115. In some embodiments, a corner cut portion 115 is respectively provided at both ends of the front beam 112 and the two side beams 111, and each corner cut portion 115 is installed with an explosion-proof valve assembly 130, wherein one explosion-proof valve assembly 130 is used for exhausting the exhaust channel 1111 provided on one side beam 111, and the other explosion-proof valve assembly 130 is used for exhausting the exhaust channel 1111 provided on the other side beam 111.

[0067] In some embodiments, the battery tray 10 includes a tray body 100 and an explosion-proof valve assembly 130. The tray body 100 includes a frame 110 and a bottom plate 120, the frame 110 and the bottom plate 120 enclose a receiving cavity 101 for receiving the battery pack 20, the frame 110 includes a corner cut 115, at least part of the frame 110 is formed with an exhaust passage 1111 connected to the receiving cavity 101; the explosion-proof valve assembly 130 is arranged at the corner cut 115, and is connected to an end of the exhaust passage 1111 away from the receiving cavity 101, and is used to discharge the airflow in the exhaust passage 1111. Through the above technical solution, that is, the battery tray 10 disclosed in the present invention, the explosion-proof valve assembly 130 is arranged outside the corner cut 115 of the frame 110 of the tray body 100, and the corner cut 115 provides an installation space for the explosion-proof valve assembly 130. In addition, the gas in the receiving cavity 101 can be directly discharged to the outside without entering the interior of the battery tray 10, thereby improving the overall safety performance.

[0068] The explosion-proof valve assembly 130 can be constructed using any suitable structure. For example, it can be automatically opened when the pressure in the exhaust channel 1111 reaches a preset pressure, or when the battery management system opens the explosion-proof valve assembly 130 through a switch assembly based on detection of the battery pack.

[0069] Optionally, the explosion-proof valve assembly 130 may include an explosion-proof valve 131 and a cover body 132 disposed outside the explosion-proof valve 131; the cover body 132 is formed with a second exhaust port 1321, and the second exhaust port 1321 allows the exhausted gas to avoid external electrical devices, that is, the second exhaust port 1321 is configured to control the direction of the exhausted gas, so that the gas can avoid external electrical devices and avoid damage to the external electrical devices. Among them, the explosion-proof valve 131 can be constructed using a structure known in the relevant technology. In addition, the cover body 132 is disposed on the periphery of the explosion-proof valve 131, a cover body 132 channel is formed between the cover body 132 and the explosion-proof valve 131, and a second exhaust port 1321 is disposed on the cover body 132 to communicate with the outside world, so as to avoid the airflow exhausted by the explosion-proof valve 131 facing the external electrical devices and causing damage to the external electrical devices.

[0070] Since there can be multiple exhaust channels 1111, in order to guide the airflow of multiple exhaust channels 1111 to the explosion-proof valve 131, as shown in FIG. Fig.11 As shown, in some embodiments, the corner cutter 115 includes a collecting channel 1151 and a transition channel 1152; one end of the collecting channel 1151 is connected to the exhaust channel 1111, and the other end is connected to the valve body channel of the explosion-proof valve 131 through the transition channel 1152, so that the gas in the exhaust channel 1111 can enter the cover body 132 through the valve body channel of the explosion-proof valve 131, and can be discharged from the second exhaust port 1321. The arrows indicate the exhaust flow direction.

[0071] The plurality of exhaust passages 1111 may be arranged at intervals inside the side beam 111, such as when the side beam 111 is made of aluminum alloy, it may be directly formed by extrusion. The collecting passage 1151 may be perpendicular to the extension direction of the plurality of exhaust passages 1111 and communicate with the plurality of exhaust passages respectively, and the transition passage 1152 may be in the same extension direction as the exhaust passage 1111 to connect the explosion-proof valve 131 and the collecting passage 1151.

[0072] It should be noted that the battery tray 10 disclosed in the present invention is not limited to the number of battery cell strings and modules inside the battery pack. The structure of the battery tray 10 is not limited to aluminum trays, but can also be applied to die-cast trays, machined trays or other composite material trays.

[0073] refer to Figures 1 to 11 The embodiment of the present disclosure provides a battery pack, which includes a battery group 20 and the above-mentioned battery tray 10. Therefore, the battery pack also has the advantages of the above-mentioned battery tray 10, which will not be repeated here.

[0074] The battery tray 10 may include a receiving cavity 101 and a power distribution cavity 102, and the receiving cavity 101 includes a plurality of mutually independent sub-cavities 1011. There are multiple battery packs 20, each battery pack 20 may be formed by assembling a plurality of battery cells, and each sub-cavity 1011 includes a battery pack 20. The exhaust passage 1111 is arranged inside the two side beams 111, and each sub-cavity 1011 is connected to its corresponding exhaust passage 1111 through a first exhaust port 1112 arranged on the side beam 111.

[0075] In order to improve the stability of the battery, in some embodiments, a filler 150 is provided between the battery pack 20 and the side beam 111. The length of the filler 150 is less than the length of the battery pack 20. While supporting the battery pack 20, the first exhaust port 1112 can also be provided at both ends of the side beam 111 corresponding to the filler 150. It should be noted that the filler 150 includes but is not limited to a plastic bracket, and can also be made of other elastic materials with insulation properties that can meet certain buffering properties.

[0076] In order to seal the battery pack 20 in the accommodating cavity 101, in some embodiments, the battery pack further includes a cover plate assembly 140, which is used to seal the end of the frame 110 away from the bottom plate 120. Thus, the accommodating cavity 101 and the matching cavity can form a closed chamber to prevent the external environment (such as dust, moisture, etc.) from affecting the battery pack 20 and the electrical components.

[0077] The cover assembly 140 can be constructed using any suitable structure, and can also be connected to the tray body 100 in a suitable manner. In some embodiments, the cover assembly 140 includes a sealing cover 142 connected to the frame 110 and an upper cover 141. The upper cover 141 is used to seal the accommodating cavity 101 and the power distribution cavity 102; the upper cover 141 is provided with an opening communicating with the power distribution cavity 102, and the sealing cover 142 is sealed and connected to the opening. The size of the upper cover 141 corresponds to the plane size of the frame, and can be connected to the frame 110 by bolts. In order to realize that the electrical components inside the power distribution cavity 102 can be repaired separately, an opening is set in the upper cover 141 corresponding to the position of the power distribution cavity 102, and the sealing cover 142 can be sealed and connected to the opening in any suitable manner. It should be noted that, since the corner cuts 115 are provided on both sides of the distribution cavity 102 , the shape of the sealing cover 142 can correspond to the outer contour of the frame, that is, the size of the sealing cover 142 corresponding to the front beam 112 is smaller than the size of the sealing cover 142 corresponding to the cross beam 114 .

[0078] In other embodiments, the cover assembly 140 can also be connected to the frame 110 including a sealing cover 142 and an upper cover 141. The upper cover 141 and the sealing cover 142 can be installed separately. For example, the upper cover 141 can be used only to seal the accommodating cavity 101, and the sealing cover 142 can also be used only to seal the distribution cavity 102. Both can be sealed and connected to the frame 110 by bolts or screws.

[0079] It should be noted that the bottom plate 120 is disposed at the bottom of the frame 110 in the third direction Z, and the upper cover 141 and the sealing cover 142 are disposed at the top in the third direction Z. The first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0080] An embodiment of the present disclosure further provides a vehicle, which includes the above-mentioned battery pack. Therefore, the vehicle also has all the advantages of the above-mentioned battery pack, which will not be described one by one here.

[0081] It should be noted that, in some embodiments, the second exhaust port 1321 of the cover body 132 of the explosion-proof valve assembly 130 is arranged toward the ground.

[0082] The cover body 132 can be integrally formed by stamping and fixed to the side of the corner cut portion 115 by bolts, so that the exhausted gas is not directly sprayed on external components but is guided toward the ground, thereby further improving safety.

[0083] The battery tray 10, battery pack and vehicle disclosed in the present invention are provided with a corner cut portion 115 on the frame 110 and an exhaust hole on the corner cut portion 115, and the explosion-proof valve assembly 130 is arranged outside the corner cut portion 115 of the frame 110 of the tray body 100. The corner cut portion 115 provides an installation space for the explosion-proof valve assembly 130. In addition, the gas in the accommodating cavity 101 can be directly discharged to the outside through the exhaust channel 1111 and the exhaust hole of the corner cut portion 115 without entering the distribution cavity 102 of the battery tray 10, thereby improving the overall safety performance.

[0084] Furthermore, the exhaust chamber is separated after the battery pack thermal runaway: Figure 2 , Figure 3 and Figure 4 As shown, the three sub-cavities 1011 correspond to three battery pack 20 modules respectively. The gas generated when one of the three modules of the battery pack 20 is out of control only exists in the corresponding sub-cavity 1011. Since the upper cover 141 and the tray body 100 are fixed by bolts, the three cavities exist independently and the generated gases will not flow into each other.

[0085] The exhaust is carried out through the exhaust channel 1111 of the side beam 111 of the tray body 100; when the battery pack 20 in a sub-cavity 1011 generates gas due to thermal runaway, the gas flows to the first exhaust ports 1112 on both sides, enters the exhaust channel 1111 of the side beam 111, and is exhausted to the outside through the exhaust channel 1111. Similarly, each sub-cavity 1011 corresponds to an exhaust channel 1111, and different exhaust channels 1111 are isolated from each other. The exhaust channels 1111 can be extruded from the aluminum tray as a whole, and the exhaust channels 1111 are independent of each other.

[0086] The external exhaust passes through the side beam 111 of the pallet body 100, and is discharged directly to the outside without passing through the internal enclosure, which is safer.

[0087] When the gas in the exhaust channel 1111 gathers at the corners of the tray body 100, it does not need to pass through other areas of the package body, but all is inside the tray side beam 111. When the pressure in the cavity reaches a certain value, the valve body channel of the explosion-proof valve 131 opens and the gas is discharged. Compared with other package exhaust schemes, the exhaust method of this embodiment is to open a first exhaust port 1112 through the side beam 111, and gather the gas at the corners and exhaust the gas uniformly through the explosion-proof valve 131. The entire exhaust channel 1111 does not pass through the high-voltage distribution box or other locations, reducing other failure modes.

[0088] The exhaust guide device, i.e., the cover body 132, is installed on the interface to the outside to guide the exhaust gas flow. The cover body 132 is formed by integral stamping; in order to prevent the exhausted gas from directly spraying the flammable parts of the vehicle outside the package body. The cover body 132 is installed outside the package body so that the gas does not directly spray the flammable parts. In addition, the gas sprays to the ground without causing damage to other parts of the whole.

[0089] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0090] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0091] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A battery tray, characterized in that: include: The tray body includes a frame and a bottom plate, the frame and the bottom plate enclose a storage cavity for accommodating a battery pack, the frame includes a corner cut portion, the corner cut portion is provided with an exhaust hole, and at least a portion of the frame is formed with an exhaust channel connecting the exhaust hole and the storage cavity.

2. The battery tray according to claim 1, characterized in that: The frame and the bottom plate also enclose a power distribution cavity for accommodating electrical components, the power distribution cavity and the accommodating cavity are separated by a crossbeam, and the power distribution cavity is located on one side of the accommodating cavity in the first direction; The corner cut portion is located on at least one side of the power distribution cavity in the second direction; The first direction is perpendicular to the second direction.

3. The battery tray according to claim 2, characterized in that: The frame includes two side beams extending along a first direction and spaced apart in a second direction, and a front beam and a rear beam extending along the second direction and spaced apart in the first direction; The front beam and at least one of the side beams are connected via the cut corner portion.

4. The battery tray according to claim 3, characterized in that: The front beam, the cross beam and the two side beams enclose the power distribution cavity; From the cross beam toward the front beam, the cut corner portion is arranged to be inclined inwards.

5. The battery tray according to claim 3, characterized in that: The battery tray further comprises at least one crossbeam disposed in the accommodating cavity and extending along the second direction, wherein the crossbeam divides the accommodating cavity into a plurality of sub-cavities that are independently arranged from each other; The multiple sub-cavities are respectively connected to the exhaust holes through the multiple exhaust channels arranged in the side beams, and each side beam is formed with a first exhaust port connecting the sub-cavity and the exhaust channel on the side wall close to the sub-cavity in the second direction.

6. The battery tray according to claim 5, characterized in that: Each of the sub-cavities corresponds to and is in communication with at least one of the exhaust passages of the side beam.

7. The battery tray according to any one of claims 1 to 6, characterized in that: The battery tray further includes an explosion-proof valve assembly, which is disposed at the corner cut portion and communicated with the exhaust hole for exhausting the airflow in the exhaust channel.

8. The battery tray according to claim 7, characterized in that: The explosion-proof valve assembly comprises an explosion-proof valve and a cover body arranged outside the explosion-proof valve; The cover body is formed with a second exhaust port, and the second exhaust port allows the exhausted gas to avoid external electrical components.

9. The battery tray according to claim 8, characterized in that: The exhaust hole includes a collecting channel and a transition channel; One end of the collecting channel is connected to the exhaust channel, and the other end is connected to the valve body channel of the explosion-proof valve through the transition channel, so that the gas in the exhaust channel can enter the cover body through the valve body channel of the explosion-proof valve and can be discharged from the second exhaust port.

10. A battery pack, characterized in that: The battery pack comprises the battery tray described in any one of claims 1-9.

11. The battery pack according to claim 10, characterized in that: The battery pack further comprises a cover plate assembly, and the cover plate assembly is used for sealing an end of the frame away from the bottom plate.

12. The battery pack according to claim 11, characterized in that: The cover plate assembly comprises a sealing cover and an upper cover connected to the frame, wherein the upper cover seals the accommodating cavity and the power distribution cavity of the battery tray; The upper cover is provided with an opening communicating with the power distribution cavity, and the sealing cover is sealed and connected to the opening.

13. The battery pack according to claim 11, characterized in that: The cover plate assembly includes a sealing cover and an upper cover connected to the frame, the upper cover seals the accommodating cavity of the battery tray, and the sealing cover seals the power distribution cavity of the battery tray.

14. The battery pack according to claim 11, characterized in that: The accommodating cavity includes a plurality of sub-cavities; The battery pack further comprises a plurality of battery packs, and each of the sub-cavities is provided with one of the battery packs.

15. The battery pack according to claim 14, characterized in that: A filling piece is provided between the battery pack and the side beam of the frame, and the length of the filling piece is smaller than the length of the battery pack.

16. A vehicle, characterized in that: The vehicle comprises the battery pack according to any one of claims 10-15.

17. The vehicle according to claim 16, characterized in that The second exhaust port of the cover body of the explosion-proof valve assembly is arranged toward the ground.

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